Afternoon Outlook

DAY ONE...TONIGHT.

LIGHT SNOW WILL CONTINUE TO OVERSPREAD NORTHERN ILLINOIS AND
NORTHWEST INDIANA. LIGHT SNOW WILL CONTINUE THROUGH TONIGHT WITH
ACCUMULATIONS BETWEEN 1 AND 3 INCHES. NORTHEAST WINDS BETWEEN
10 AND 20 MPH ARE LIKELY...WHICH MAY REDUCE VISIBILITIES FOR A
PERIOD OF TIME TONIGHT.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY.

LIGHT SNOW WILL CONTINUE THROUGH EARLY TUESDAY MORNING...GRADUALLY
DIMINISHING TO FLURRIES BY LATE MORNING.

HEAVY SNOW WILL BEGIN TUESDAY AFTERNOON AND CONTINUE THROUGH
TUESDAY NIGHT INTO WEDNESDAY. SNOW ACCUMULATIONS BY WEDNESDAY
AFTERNOON MAY BE GREATER THAN A FOOT. STRONG WINDS AT TIMES MAY
PRODUCE WHITE OUT CONDITIONS TUESDAY NIGHT AND EARLY WEDNESDAY
MORNING. BLIZZARD CONDITIONS ARE LIKELY TO OCCUR IN NORTHERN
ILLINOIS AND NORTHWEST INDIANA. LOCAL FLOODING MAY OCCUR ALONG THE
ILLINOIS LAKE MICHIGAN SHORELINE TUESDAY NIGHT AND WEDNESDAY
MORNING.

.

...BLIZZARD WARNING IN EFFECT FROM 3 PM CST /4 PM EST/ TUESDAY TO
3 PM CST /4 PM EST/ WEDNESDAY...

THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A BLIZZARD
WARNING...WHICH IS IN EFFECT FROM 3 PM CST /4 PM EST/ TUESDAY TO
3 PM CST /4 PM EST/ WEDNESDAY. THE BLIZZARD WARNING REPLACES THE
BLIZZARD WATCH.

* TIMING...SNOW WILL INCREASE IN INTENSITY AND BECOME HEAVY AT
TIMES SOUTH OF INTERSTATE 80 TUESDAY AFTERNOON...GRADUALLY
SPREADING NORTH INTO NORTHERN ILLINOIS BY TUESDAY EVENING.
SNOW...WHICH WILL BE HEAVY AT TIMES...WILL CONTINUE TUESDAY
NIGHT INTO WEDNESDAY MORNING. LAKE ENHANCED SNOW SHOWERS WILL
CONTINUE NEAR LAKE MICHIGAN IN NORTHEAST ILLINOIS WEDNESDAY
MORNING...SHIFTING INTO NORTHWEST INDIANA DURING THE AFTERNOON.
NORTHEAST WINDS OF 25 TO 40 MPH WITH STRONGER GUSTS WILL RESULT
IN BLIZZARD CONDITIONS DEVELOPING LATE TUESDAY AFTERNOON AND
CONTINUING THROUGH THE OVERNIGHT HOURS.

* ACCUMULATIONS...SNOW ACCUMULATIONS IN EXCESS OF A FOOT ARE
EXPECTED OVER MUCH OF THE AREA FROM TUESDAY AFTERNOON THROUGH
WEDNESDAY AFTERNOON. LOCALIZED TOTALS IN EXCESS OF 18 INCHES
REMAIN POSSIBLE...ESPECIALLY NEAR THE LAKE.

* HAZARDS...WHITE-OUT CONDITIONS ARE EXPECTED AT TIMES TUESDAY
NIGHT AS VERY HEAVY SNOW AND STRONG WINDS RESULT IN BLIZZARD
CONDITIONS. SNOWFALL RATES OF AT LEAST 2 TO 3 INCHES PER HOUR
ARE POSSIBLE...ESPECIALLY WHERE THUNDER SNOW MAY BE PRESENT.

* IMPACTS...CONDITIONS WILL RAPIDLY DETERIORATE FROM SOUTH TO
NORTH ACROSS THE REGION TUESDAY AFTERNOON...WITH TRAVEL LIKELY
BECOMING VIRTUALLY IMPOSSIBLE AT TIMES TUESDAY NIGHT AND INTO
EARLY WEDNESDAY MORNING. SNOW IS EXPECTED TO FALL SO HEAVILY AT
TIMES TUESDAY NIGHT THAT PLOWS MAY BE UNABLE TO KEEP UP WITH THE
SNOW...WITH MANY SIDE STREETS AND UNTREATED ROADS BECOMING
IMPASSABLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A BLIZZARD WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE
EXPECTED OR OCCURRING. FALLING AND BLOWING SNOW WITH STRONG WINDS
AND POOR VISIBILITIES ARE LIKELY. THIS WILL LEAD TO WHITEOUT
CONDITIONS...MAKING TRAVEL EXTREMELY DANGEROUS. DO NOT TRAVEL. IF
YOU MUST TRAVEL...HAVE A WINTER SURVIVAL KIT WITH YOU. IF YOU GET
STRANDED...STAY WITH YOUR VEHICLE.

...DANGEROUS MULTIFACETED AND POTENTIALLY LIFE THREATENING WINTER
STORM TUESDAY NIGHT INTO WEDNESDAY...

...BLIZZARD WATCH REMAINS IN EFFECT FROM TUESDAY AFTERNOON
THROUGH WEDNESDAY AFTERNOON...

A BLIZZARD WATCH REMAINS IN EFFECT FROM TUESDAY AFTERNOON THROUGH
WEDNESDAY AFTERNOON.

* TIMING...SNOW WILL INCREASE IN INTENSITY AND BECOME HEAVY AT
TIMES SOUTH OF INTERSTATE 80 TUESDAY AFTERNOON...GRADUALLY
SPREADING NORTH INTO NORTHERN ILLINOIS BY TUESDAY EVENING.
SNOW...HEAVY AT TIMES...WILL CONTINUE TUESDAY NIGHT INTO
WEDNESDAY MORNING. SNOW SHOWERS WILL CONTINUE NEAR LAKE MICHIGAN
IN NORTHEAST ILLINOIS WEDNESDAY MORNING...SHIFTING INTO
NORTHWEST INDIANA DURING THE AFTERNOON. NORTHEAST WINDS OF 25 TO
40 MPH WITH STRONGER GUSTS WILL RESULT IN BLIZZARD CONDITIONS
DEVELOPING TUESDAY EVENING AND CONTINUING THROUGH THE OVERNIGHT
HOURS.

* ACCUMULATIONS...SNOW ACCUMULATIONS IN EXCESS OF A FOOT ARE
EXPECTED OVER MUCH OF THE WATCH AREA FROM TUESDAY AFTERNOON
THROUGH WEDNESDAY AFTERNOON. LOCALIZED TOTALS IN EXCESS OF 18
INCHES ARE POSSIBLE...ESPECIALLY NEAR THE LAKE.

* HAZARDS...WHITE-OUT CONDITIONS ARE EXPECTED AT TIMES TUESDAY
NIGHT AS VERY HEAVY SNOW AND STRONG WINDS RESULT IN BLIZZARD
CONDITIONS. SNOWFALL RATES OF AT LEAST 2 TO 3 INCHES PER HOUR
ARE POSSIBLE...ESPECIALLY WITH ANY THUNDERSTORMS THAT OCCUR.

* IMPACTS...CONDITIONS WILL RAPIDLY DETERIORATE FROM NORTH TO
SOUTH ACROSS THE REGION TUESDAY AFTERNOON...WITH TRAVEL LIKELY
BECOMING VIRTUALLY IMPOSSIBLE AT TIMES TUESDAY NIGHT INTO
EARLY WEDNESDAY MORNING. SNOW IS EXPECTED TO FALL SO HEAVILY
AT TIMES TUESDAY NIGHT THAT PLOWS WILL BE UNABLE TO KEEP UP
WITH THE SNOW...WITH MANY SIDE STREETS AND UNTREATED ROADS
BECOMING IMPASSABLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A BLIZZARD WATCH MEANS THERE IS A POTENTIAL FOR FALLING AND
BLOWING SNOW WITH STRONG WINDS AND EXTREMELY POOR VISIBILITIES.
THIS CAN LEAD TO WHITEOUT CONDITIONS AND MAKE TRAVEL VERY
DANGEROUS AND POTENTIALLY LIFE THREATENING.

LISTEN TO NOAA WEATHER RADIO OR YOUR LOCAL MEDIA FOR THE LATEST
UPDATES ON THIS SITUATION.

Biggest Snowstorms in Chicago and Rockford

The following are the 10 ten greatest snowfall events in the Chicago and Rockford area.
Chicago
Since snow records began in 1886 in Chicago, there have been 41 winter storms that produced 10 inches or more of snow. A 10 inch snow occurs about once every 3 years. A 15 inch snow occurs only once about every 19 years. The closest back to back 10 inch snows were March 25-26 and April 1-2, 1970 (6 days apart). The longest period of time without a 10 inch snow or greater was February 12, 1981 to January 1, 1999 (almost 18 years). The earliest 10 inch snow was November 25-26, 1895 and the latest 10 inch snow was April 1-2, 1970. The most recent 10 inch snow was January 21-23, 2005. These snowfall statistics are through the 2004-2005 winter season.
Chicago's 10 biggest Snowstorms:

1. 23.0 inches Jan 26-27, 1967
2. 21.6 inches Jan 1-3, 1999
3. 19.2 inches Mar 25-26, 1930
4. 18.8 inches Jan 13-14, 1979
5. 16.2 inches Mar 7-8, 1931
6. 15.0 inches Dec 17-20, 1929
7. 14.9 inches Jan 30, 1939
8. 14.9 inches Jan 6-7, 1918
9. 14.3 inches Mar 25-26, 1970
10. 14.0 inches Jan 18-20, 1886

Rockford
There have been 21 10-inch snows in Rockford’s history. The closest back-to-back 10-inch snows were January 14 – 15 and January 17 – 19 1943  (2 days). Therefore, it’s no wonder than the 1942 – 1943 season is ranked second for the most snowfall, right after the blizzard season of 1978 – 1979 with an amazing 74.5 inches of snow recorded!
Rockford’s Ten Biggest Snowstorms

1. 16.3 inches on January 6 - 7, 1918
2. 16.0 inches on March 30 – 31, 1926
3. 15.0 inches on March 21 – 22, 1932
4. 13.8 inches on March 1 – 2, 1948
5. 12.9 inches on December 11 – 13, 1909
6. 12.5 inches on February 10 – 11, 1944
7. 12.3 inches on January 11 – 14, 1979
8. 12.0 inches on January 17 – 19, 1943
9. 11.5 inches on January 14 – 15, 1943
10. 11.4 inches on December 14 – 16, 1987 and 11.4 inches on February 9 – 10, 1960

Gino Izzi from the Chicago National Weather Service does an excellent job explaining this up-coming storm in this Multi-Media Briefing!  Check it out!

http://www.crh.noaa.gov/lot/?n=webbriefing

Morning Outlook

DAY ONE...TODAY AND TONIGHT.

SNOW WILL MOVE INTO NORTH CENTRAL ILLINOIS THIS AFTERNOON AND
NORTHEAST ILLINOIS AND NORTHWEST INDIANA TONIGHT.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY.

HEAVY SNOW WILL BEGIN TUESDAY AFTERNOON AND WILL CONTINUE THROUGH
THE NIGHT. HEAVY SNOW WILL OCCUR WEDNESDAY MORNING. SNOW
ACCUMULATIONS BY WEDNESDAY AFTERNOON MAY BE GREATER THAN A FOOT.
STRONG WINDS MAY PRODUCE WHITE OUT CONDITIONS TUESDAY NIGHT AND
EARLY WEDNESDAY MORNING. BLIZZARD CONDITIONS MAY OCCUR IN NORTHERN
ILLINOIS AND NORTHWEST INDIANA. LOCAL FLOODING MAY OCCUR ALONG
THE LAKE MICHIGAN SHORES TUESDAY NIGHT AND WEDNESDAY MORNING.

...DANGEROUS MULTIFACETED AND POTENTIALLY LIFE THREATENING WINTER
STORM TAKING AIM ON REGION...

...BLIZZARD WATCH REMAINS IN EFFECT FROM TUESDAY AFTERNOON
THROUGH WEDNESDAY AFTERNOON...

A BLIZZARD WATCH REMAINS IN EFFECT FROM TUESDAY AFTERNOON THROUGH
WEDNESDAY AFTERNOON.

* TIMING...SNOW WILL INCREASE IN INTENSITY AND BECOME HEAVY AT
TIMES SOUTH OF INTERSTATE 80 TUESDAY AFTERNOON...GRADUALLY
SPREADING NORTH INTO NORTHERN ILLINOIS BY TUESDAY EVENING.
SNOW...HEAVY AT TIMES...WILL CONTINUE TUESDAY NIGHT INTO
WEDNESDAY MORNING. SNOW SHOWERS WILL CONTINUE NEAR LAKE MICHIGAN
IN NORTHEAST LLINOIS WEDNESDAY MORNING...SHIFTING INTO NORTHWEST
INDIANA DURING THE AFTERNOON. NORTHEAST WINDS OF 25 TO 40 MPH
WITH STRONGER GUSTS WILL RESULT IN BLIZZARD CONDITIONS
DEVELOPING TUESDAY EVENING AND CONTINUING THROUGH THE OVERNIGHT
HOURS.

* ACCUMULATIONS...SNOW ACCUMULATIONS IN EXCESS OF A FOOT ARE
EXPECTED OVER MUCH OF THE WATCH AREA FROM TUESDAY AFTERNOON
THROUGH WEDNESDAY AFTERNOON. LOCALIZED TOTALS IN EXCESS OF 18
INCHES ARE POSSIBLE...ESPECIALLY NEAR THE LAKE.

* HAZARDS...WHITE-OUT CONDITIONS ARE EXPECTED AT TIMES TUESDAY
NIGHT AS VERY HEAVY SNOW AND STRONG WINDS RESULT IN BLIZZARD
CONDITIONS. SNOWFALL RATES OF AT LEAST 2 TO 3 INCHES PER HOUR
ARE POSSIBLE...ESPECIALLY WITH ANY THUNDERSTORMS THAT OCCUR.

* IMPACTS...CONDITIONS WILL RAPIDLY DETERIORATE FROM NORTH TO
SOUTH ACROSS THE REGION TUESDAY AFTERNOON...WITH TRAVEL LIKELY
BECOMING VIRTUALLY IMPOSSIBLE AT TIMES TUESDAY NIGHT INTO EARLY
WEDNESDAY MORNING. SNOW IS EXPECTED TO FALL SO HEAVILY AT TIMES
TUESDAY NIGHT THAT PLOWS WILL BE UNABLE TO KEEP UP WITH THE
SNOW...WITH MANY SIDE STREETS AND UNTREATED ROADS BECOMING
IMPASSABLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A BLIZZARD WATCH MEANS THERE IS A POTENTIAL FOR FALLING AND
BLOWING SNOW WITH STRONG WINDS AND EXTREMELY POOR VISIBILITIES.
THIS CAN LEAD TO WHITEOUT CONDITIONS AND MAKE TRAVEL VERY
DANGEROUS AND POTENTIALLY LIFE THREATENING.

LISTEN TO NOAA WEATHER RADIO OR YOUR LOCAL MEDIA FOR THE LATEST
UPDATES ON THIS SITUATION.

Web-Briefing Regarding the up-coming storm!  These will be updated frequently, keep checking!

http://www.crh.noaa.gov/lot/?n=webbriefing

...BLIZZARD WATCH REMAINS IN EFFECT FROM TUESDAY AFTERNOON
THROUGH WEDNESDAY AFTERNOON...

A BLIZZARD WATCH REMAINS IN EFFECT FROM TUESDAY AFTERNOON THROUGH
WEDNESDAY AFTERNOON.

* TIMING...HEAVY SNOWFALL WILL SPREAD NORTHEASTWARD ACROSS THE
AREA MIDDAY TUESDAY AND CONTINUE THROUGH TUESDAY NIGHT. AS THE
SNOWFALL FROM THE STORM SYSTEM STARTS TO WIND DOWN DURING
WEDNESDAY MORNING AND EARLY AFTERNOON...LAKE EFFECT SNOW WILL
HAVE DEVELOPED ON THE ILLINOIS SIDE OF THE LAKE. INCREASINGLY
HEAVY AND MORE CONCENTRATED LAKE EFFECT SNOW WILL SHIFT INTO
FAR NORTHWEST INDIANA DURING WEDNESDAY AFTERNOON AND PERSIST
INTO WEDNESDAY EVENING BEFORE SHIFTING FURTHER OFF TO THE EAST
INTO SOUTHWEST LOWER MICHIGAN AND NORTH CENTRAL INDIANA.

* ACCUMULATIONS...TOTAL ACCUMULATIONS FROM MONDAY MORNING THROUGH
WEDNESDAY EVENING ARE EXPECTED TO BE IN EXCESS OF 12 INCHES IN
NORTH CENTRAL ILLINOIS...AND IN EXCESS OF 18 INCHES OVER
NORTHEAST AND EAST CENTRAL ILLINOIS...AS WELL AS NORTHWEST
INDIANA. LOCAL AMOUNTS IN EXCESS OF 24 INCHES ARE POSSIBLE IN
FAR NORTHWEST INDIANA...DEPENDING ON EXACTLY WHERE THE LAKE
EFFECT SNOW BAND SETS UP AND HOW PERSISTENT IT IS OVER ANY ONE
LOCATION.

* HAZARDS...BLIZZARD CONDITIONS WITH CONSIDERABLE BLOWING AND
DRIFTING SNOW AND FREQUENT WHITE OUT CONDITIONS.

* IMPACTS...NEARLY IMPOSSIBLE TRAVEL CONDITIONS AS SNOW WILL BE
ACCUMULATING AT A RAPID RATE DURING THE PEAK OF THE SNOW STORM
TUESDAY AFTERNOON AND NIGHT. HEAVY LAKE EFFECT SNOW IN
NORTHWEST INDIANA LATER WEDNESDAY AND WEDNESDAY EVENING WILL
CONTINUE TO SNARL TRAVEL THERE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A BLIZZARD WATCH MEANS THERE IS A POTENTIAL FOR FALLING AND/OR
BLOWING SNOW WITH STRONG WINDS AND EXTREMELY POOR VISIBILITIES.
THIS CAN LEAD TO WHITEOUT CONDITIONS AND MAKE TRAVEL VERY
DANGEROUS.

MAJOR WINTER STORM TO IMPACT THE REGION TUESDAY INTO WEDNESDAY...

.THE FIRST PHASE OF THE UPCOMING WINTER STORM WILL BEGIN MONDAY
AFTERNOON THROUGH EARLY TUESDAY MORNING FOR NORTHERN ILLINOIS AND
NORTHWEST INDIANA. SNOWFALL TOTALS FROM THE FIRST PHASE APPEARS TO
BE BETWEEN 2 AND 4 INCHES ACROSS NORTHERN ILLINOIS AND NORTHWEST
INDIANA. THE FOCUS TURNS TOWARDS THE LARGER EVENT THAT PUSHES INTO
THE REGION TUESDAY AFTERNOON AND WILL PERSIST THROUGH WEDNESDAY.

A DEVELOPING AREA OF LOW PRESSURE IS EXPECTED TO SLIDE EAST OF THE
ROCKIES INTO EASTERN TEXAS MONDAY NIGHT AND RAPIDLY STRENGTHEN AS
IT SLIDES NORTH TUESDAY. THE PRECISE TRACK OF THE LOW CONTINUES TO
WOBBLE WITH EACH NEW MODEL RUN...HOWEVER RELATIVE CONSISTENCY OF A
TRACK FROM CENTRAL ARKANSAS NORTH TO CENTRAL INDIANA BY WEDNESDAY
MORNING LOOKS TO BE THE MOST PROBABLE TRACK. THIS WOULD PLACE THE
AXIS OF THE HEAVIEST SNOWFALL TO THE NORTHWEST OF THE TRACK OF THE
LOW PRESSURE...OR ACROSS MUCH OF NORTHERN ILLINOIS AND NORTHWEST
INDIANA.

AS THE LOW PRESSURE CONTINUES TO SLIDE NORTH AND STRENGTHEN...NORTHEAST
WINDS OF 20 TO 30 MPH ARE EXPECTED TO DEVELOP AND BRING A FLOW OF
COLD AIR ACROSS LAKE MICHIGAN AIDING IN THE GENERATION OF LAKE
EFFECT SNOW TUESDAY EVENING. WINDS WILL CONTINUE TO RAMP UP WITH
SUSTAINED WINDS TUESDAY EVENING BETWEEN 25 AND 35 MPH WITH GUSTS
UP TO 40 MPH POSSIBLE. NORTHEAST WINDS THEN CONTINUE TO STRENGTHEN
TUESDAY NIGHT INTO EARLY MORNING WEDNESDAY WITH GUSTS UP TO 45 MPH
POSSIBLE. THIS IN COMBINATION WITH THE FALLING SNOWFALL MAY CREATE
BLIZZARD CONDITIONS AND WHITE OUT CONDITIONS. AS THE LOW PRESSURE
CONTINUES TO LIFT NORTH INTO CENTRAL INDIANA WEDNESDAY
MORNING...WINDS WILL BEGIN TO TURN NORTHERLY AND BRING THE LAKE
ENHANCED SNOWFALL TO NORTHWEST INDIANA.

BY LATER WEDNESDAY THE SNOW FROM THE DEPARTING WINTER STORM WILL
BE WINDING DOWN ACROSS THE AREA BUT A BAND OF SIGNIFICANT LAKE
EFFECT SNOW IS EXPECTED IN NORTHWEST INDIANA WHERE SEVERAL
ADDITIONAL INCHES OF SNOW ARE POSSIBLE BEFORE THE LAKE EFFECT
SHIFTS FURTHER OFF TO THE EAST INTO SOUTHWESTERN LOWER MICHIGAN
AND NORTH CENTRAL INDIANA.

BETWEEN THE INITIAL LIGHTER SNOW MONDAY INTO TUESDAY MORNING...
THE HEAVY SNOWFALL FROM THE MAJOR WINTER STORM DURING TUESDAY
AFTERNOON THROUGH WEDNESDAY MORNING...AND THE INCREASINGLY INTENSE
LAKE EFFECT SNOW DEVELOPING DURING WEDNESDAY...IN EXCESS OF A FOOT
AND A HALF OR MORE OF SNOW WILL NOT BE UNCOMMON OVER MUCH OF
NORTHERN ILLINOIS AND FAR NORTHWEST INDIANA. SNOWFALL RATES UP TO
3 INCHES PER HOUR WILL BE PROBABLE AT THE HEIGHT OF THE STORM
TUESDAY NIGHT.

THE STORM SYSTEM WILL BE AFFECTING A LARGE PORTION OF THE
SOUTHERN GREAT LAKES...MIDWEST AND OHIO VALLEY REGIONS. ANYONE
WITH TRAVEL PLANS TUESDAY AND WEDNESDAY...INCLUDING THOSE
TRAVELING THROUGH CHICAGO OHARE AND MIDWAY AIRPORTS...SHOULD
CONTINUE TO MONITOR LATER FORECASTS REGARDING THE DEVELOPMENT OF
THIS WINTER STORM..

COUNTY SPECIFIC MESSAGE:

/O.CAN.KLOT.WS.A.0001.110201T1800Z-110203T0000Z/
/O.NEW.KLOT.BZ.A.0001.110201T1800Z-110203T0000Z/
WINNEBAGO-BOONE-MCHENRY-LAKE IL-OGLE-LEE-DE KALB-KANE-DUPAGE-COOK-
LA SALLE-KENDALL-GRUNDY-WILL-KANKAKEE-LIVINGSTON-IROQUOIS-FORD-
LAKE IN-PORTER-NEWTON-JASPER-BENTON-
INCLUDING THE CITIES OF...ROCKFORD...BELVIDERE...WOODSTOCK...
WAUKEGAN...OREGON...DIXON...DEKALB...AURORA...WHEATON...CHICAGO...
OTTAWA...OSWEGO...MORRIS...JOLIET...KANKAKEE...PONTIAC...
WATSEKA...PAXTON...GARY...VALPARAISO...MOROCCO...RENSSELAER...
FOWLER
1134 AM CST SUN JAN 30 2011 /1234 PM EST SUN JAN 30 2011/

...BLIZZARD WATCH IN EFFECT FROM TUESDAY AFTERNOON THROUGH
WEDNESDAY AFTERNOON...
...WINTER STORM WATCH IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A BLIZZARD
WATCH...WHICH IS IN EFFECT FROM TUESDAY AFTERNOON THROUGH
WEDNESDAY AFTERNOON. THE WINTER STORM WATCH HAS BEEN CANCELLED.


* TIMING...HEAVY SNOWFALL WILL SPREAD NORTHEASTWARD ACROSS THE
AREA MIDDAY TUESDAY AND CONTINUE THROUGH TUESDAY NIGHT. AS THE
SNOWFALL FROM THE STORM SYSTEM STARTS TO WIND DOWN DURING
WEDNESDAY MORNING AND EARLY AFTERNOON...LAKE EFFECT SNOW WILL
HAVE DEVELOPED ON THE ILLINOIS SIDE OF THE LAKE. INCREASINGLY
HEAVY AND MORE CONCENTRATED LAKE EFFECT SNOW WILL SHIFT INTO
FAR NORTHWEST INDIANA DURING WEDNESDAY AFTERNOON AND PERSIST
INTO WEDNESDAY EVENING BEFORE SHIFTING FURTHER OFF TO THE EAST
INTO SOUTHWEST LOWER MICHIGAN AND NORTH CENTRAL INDIANA.

* ACCUMULATIONS...TOTAL ACCUMULATIONS FROM MONDAY MORNING THROUGH
WEDNESDAY EVENING ARE EXPECTED TO BE IN EXCESS OF 8 INCHES IN
NORTH CENTRAL ILLINOIS...AND IN EXCESS OF 18 INCHES OVER
NORTHEAST AND EAST CENTRAL ILLINOIS...AS WELL AS NORTHWEST
INDIANA. LOCAL AMOUNTS IN EXCESS OF 24 INCHES ARE POSSIBLE IN
FAR NORTHWEST INDIANA...DEPENDING ON EXACTLY WHERE THE LAKE
EFFECT SNOW BAND SETS UP AND HOW PERSISTENT IT IS OVER ANY ONE
LOCATION.

* HAZARDS...BLIZZARD CONDITIONS WITH CONSIDERABLE BLOWING AND
DRIFTING SNOW AND FREQUENT WHITE OUT CONDITIONS.

* IMPACTS...NEARLY IMPOSSIBLE TRAVEL CONDITIONS AS SNOW WILL BE
ACCUMULATING AT A RAPID RATE DURING THE PEAK OF THE SNOW STORM
TUESDAY AFTERNOON AND NIGHT. HEAVY LAKE EFFECT SNOW IN NORTHWEST
INDIANA LATER WEDNESDAY AND WEDNESDAY EVENING WILL CONTINUE TO
SNARL TRAVEL THERE.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

A BLIZZARD WATCH MEANS THERE IS A POTENTIAL FOR FALLING AND/OR
BLOWING SNOW WITH STRONG WINDS AND EXTREMELY POOR VISIBILITIES.
THIS CAN LEAD TO WHITEOUT CONDITIONS AND MAKE TRAVEL VERY
DANGEROUS.

...BLIZZARD WATCH IN EFFECT FROM TUESDAY AFTERNOON THROUGH
WEDNESDAY AFTERNOON...
...WINTER STORM WATCH IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A BLIZZARD
WATCH...WHICH IS IN EFFECT FROM TUESDAY AFTERNOON THROUGH
WEDNESDAY AFTERNOON. THE WINTER STORM WATCH HAS BEEN CANCELLED.


* TIMING...HEAVY SNOWFALL WILL SPREAD NORTHEASTWARD ACROSS THE
AREA MIDDAY TUESDAY AND CONTINUE THROUGH TUESDAY NIGHT. AS THE
SNOWFALL FROM THE STORM SYSTEM STARTS TO WIND DOWN DURING
WEDNESDAY MORNING AND EARLY AFTERNOON...LAKE EFFECT SNOW WILL
HAVE DEVELOPED ON THE ILLINOIS SIDE OF THE LAKE. INCREASINGLY
HEAVY AND MORE CONCENTRATED LAKE EFFECT SNOW WILL SHIFT INTO
FAR NORTHWEST INDIANA DURING WEDNESDAY AFTERNOON AND PERSIST
INTO WEDNESDAY EVENING BEFORE SHIFTING FURTHER OFF TO THE EAST
INTO SOUTHWEST LOWER MICHIGAN AND NORTH CENTRAL INDIANA.

* ACCUMULATIONS...TOTAL ACCUMULATIONS FROM MONDAY MORNING THROUGH
WEDNESDAY EVENING ARE EXPECTED TO BE IN EXCESS OF 8 INCHES IN
NORTH CENTRAL ILLINOIS...AND IN EXCESS OF 18 INCHES OVER
NORTHEAST AND EAST CENTRAL ILLINOIS...AS WELL AS NORTHWEST
INDIANA. LOCAL AMOUNTS IN EXCESS OF 24 INCHES ARE POSSIBLE IN
FAR NORTHWEST INDIANA...DEPENDING ON EXACTLY WHERE THE LAKE
EFFECT SNOW BAND SETS UP AND HOW PERSISTENT IT IS OVER ANY ONE
LOCATION.

* HAZARDS...BLIZZARD CONDITIONS WITH CONSIDERABLE BLOWING AND
DRIFTING SNOW AND FREQUENT WHITE OUT CONDITIONS.

* IMPACTS...NEARLY IMPOSSIBLE TRAVEL CONDITIONS AS SNOW WILL BE
ACCUMULATING AT A RAPID RATE DURING THE PEAK OF THE SNOW STORM
TUESDAY AFTERNOON AND NIGHT. HEAVY LAKE EFFECT SNOW IN NORTHWEST
INDIANA LATER WEDNESDAY AND WEDNESDAY EVENING WILL CONTINUE TO
SNARL TRAVEL THERE.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

A BLIZZARD WATCH MEANS THERE IS A POTENTIAL FOR FALLING AND/OR
BLOWING SNOW WITH STRONG WINDS AND EXTREMELY POOR VISIBILITIES.
THIS CAN LEAD TO WHITEOUT CONDITIONS AND MAKE TRAVEL VERY
DANGEROUS.

Map of Estimated Snow Amounts around the Chicagoland area (Ending Weds Evening).  Chicagoland area estimated at 14 inches of snow starting Tuesday Afternoon.  See link below

http://www.crh.noaa.gov/news/display_cmsstory.php?wfo=lot&storyid=60828&source=0

Morning Outlook

.DAY ONE...TODAY AND TONIGHT.

SNOW WILL BECOME LIKELY ACROSS FAR NORTHERN ILLINOIS OVERNIGHT
WITH A CHANCE OF SNOW OVERNIGHT WEST OF I-55.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY.

SIGNIFICANT SNOW WILL SPREAD ACROSS THE ENTIRE AREA BY MONDAY
AFTERNOON AND CONTINUING THROUGH MONDAY NIGHT. THE SNOW WILL
LIGHTEN UP BY TUESDAY MORNING BUT INTENSIFY AGAIN TUESDAY
AFTERNOON WITH SEVERAL INCHES POSSIBLE ALONG AND SOUTH OF THE I-80
CORRIDOR BY EVENING. SIGNIFICANT SNOW WILL PERSIST THROUGH TUESDAY
NIGHT INTO WEDNESDAY MORNING WITH BLOWING AND DRIFTING SNOW
DEVELOPING AS NORTHEAST TO NORTH WINDS INCREASE TO 20 TO 30 MPH.
THE WIDESPREAD SNOW WILL START TO DIMINISH MIDDAY WEDNESDAY BUT AT
THE SAME TIME LAKE EFFECT SNOW WILL BE INCREASING ON THE ILLINOIS
SIDE OF THE LAKE. LAKE EFFECT SNOW WILL CONCENTRATE INTO AN
INTENSE BAND AS IT SHIFTS INTO FAR NORTHWEST INDIANA LATER
WEDNESDAY AND WEDNESDAY EVENING.

WIND CHILLS WILL BE IN THE 15 BELOW TO 25 BELOW RANGE ACROSS MUCH
OF THE AREA LATE WEDNESDAY NIGHT AND THURSDAY MORNING.

.

...WINTER STORM WATCH IN EFFECT FROM TUESDAY AFTERNOON THROUGH
WEDNESDAY AFTERNOON...

THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A WINTER STORM
WATCH...WHICH IS IN EFFECT FROM TUESDAY AFTERNOON THROUGH
WEDNESDAY AFTERNOON.

* TIMING...HEAVY SNOWFALL WILL SPREAD NORTHEASTWARD ACROSS THE
AREA MIDDAY WEDNESDAY AND CONTINUE THROUGH TUESDAY NIGHT. AS THE
SNOWFALL FROM THE STORM SYSTEM STARTS TO WIND DOWN DURING
WEDNESDAY MORNING AND EARLY AFTERNOON...LAKE EFFECT SNOW WILL
HAVE DEVELOPED ON THE ILLINOIS SIDE OF THE LAKE. INCREASINGLY
HEAVY AND MORE CONCENTRATED LAKE EFFECT SNOW WILL SHIFT INTO FAR
NORTHWEST INDIANA DURING WEDNESDAY AFTERNOON AND PERSIST INTO
WEDNESDAY EVENING BEFORE SHIFTING FURTHER OFF TO THE EAST INTO
SOUTHWEST LOWER MICHIGAN AND NORTH CENTRAL INDIANA.

* ACCUMULATIONS...TOTAL ACCUMULATIONS FROM MONDAY MORNING THROUGH
WEDNESDAY EVENING ARE EXPECTED TO BE IN EXCESS OF 8 INCHES IN
NORTH CENTRAL ILLINOIS...AND IN EXCESS OF 12 INCHES OVER
NORTHEAST AND EAST CENTRAL ILLINOIS...AS WELL AS NORTHWEST
INDIANA. LOCAL AMOUNTS IN EXCESS OF 18 INCHES ARE POSSIBLE IN
FAR NORTHWEST INDIANA...DEPENDING ON EXACTLY WHERE THE LAKE
EFFECT SNOW BAND SETS UP AND HOW PERSISTENT IT IS OVER ANY ONE
LOCATION.

* HAZARDS...HEAVY SNOWFALL AS WELL AS BLOWING AND DRIFTING SNOW.

* IMPACTS...VERY DIFFICULT TO NEAR IMPOSSIBLE TRAVEL CONDITIONS AS
SNOW WILL BE ACCUMULATING AT A RAPID RATE DURING THE PEAK OF THE
SNOW STORM TUESDAY AFTERNOON AND NIGHT. HEAVY LAKE EFFECT SNOW
IN NORTHWEST INDIANA LATER WEDNESDAY AND WEDNESDAY EVENING WILL
CONTINUE TO HAMPER TRAVEL THERE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT
SNOW...SLEET...OR ICE ACCUMULATIONS THAT MAY IMPACT TRAVEL.
CONTINUE TO MONITOR THE LATEST FORECASTS.

...SIGNIFICANT WINTER STORM TO AFFECT THE SOUTHERN GREAT LAKES
REGION TUESDAY INTO WEDNESDAY...

A PROLONGED PERIOD OF WINTRY WEATHER IS EXPECTED TO AFFECT
NORTHERN ILLINOIS AND NORTHWEST INDIANA NEXT WEEK.

LIGHT SNOW IS EXPECTED TO DEVELOP OVER THE AREA ON MONDAY AND
CONTINUE INTO TUESDAY MORNING...WITH A FEW INCHES OF ACCUMULATION
POSSIBLE.

A POWERFUL STORM SYSTEM IS THEN EXPECTED TO DEVELOP OVER THE
SOUTHERN PLAINS TUESDAY AND MOVE NORTHEAST ACROSS THE OHIO VALLEY
TUESDAY NIGHT INTO WEDNESDAY. IT IS TOO EARLY TO DETERMINE THE
EXACT TRACK OF THIS STORM. SMALL CHANGES IN THE TRACK CAN CAUSE
MAJOR CHANGES TO THE EXPECTED SNOWFALL AMOUNTS AND LOCATIONS.

HOWEVER...IF CURRENT TRENDS CONTINUE...SEVERAL INCHES OF SNOW
WILL BE POSSIBLE ACROSS NORTHERN ILLINOIS AND NORTHWEST INDIANA.
THE SNOW MAY BECOME HEAVY AT TIMES EARLY WEDNESDAY MORNING WITH
MUCH OF THE SNOW FALLING OVER A SHORT PERIOD OF TIME. WINDY
CONDITIONS WILL ALSO DEVELOP TUESDAY NIGHT CAUSING SIGNIFICANT
BLOWING AND DRIFTING SNOW.

THIS STORM SYSTEM WILL AFFECT A LARGE PORTION OF THE SOUTHERN
GREAT LAKES...MIDWEST AND OHIO VALLEY REGIONS. ANYONE WITH TRAVEL
PLANS TUESDAY AND WEDNESDAY...INCLUDING THOSE TRAVELING THROUGH
CHICAGO OHARE AND MIDWAY AIRPORTS...SHOULD CONTINUE TO MONITOR
LATER FORECASTS REGARDING THIS WINTER STORM.

Afternoon Outlook

.DAY ONE...TONIGHT.

LIGHT SNOW IS LIKELY OVER NORTH CENTRAL ILLINOIS THIS EVENING.
ACCUMULATIONS UP TO 1 INCH ARE POSSIBLE IN THE VICINITY OF A LINE
FROM ROCKFORD ILLINOIS TO REMINGTON INDIANA. LIGHTER ACCUMULATIONS
ARE POSSIBLE TO THE NORTH AND SOUTH OF THIS AREA...INCLUDING THE
CHICAGO AREA TO THE NORTH AND THE PONTIAC AREA TO THE SOUTH.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY.

NUMEROUS CHANCES FOR LIGHT SNOW SUNDAY THROUGH FRIDAY LIKELY
ACROSS PORTIONS OF NORTHERN ILLINOIS AND NORTHWEST INDIANA.

A POWERFUL STORM SYSTEM IS EXPECTED TO DEVELOP OVER THE SOUTHERN
PLAINS TUESDAY AND MOVE NORTHEAST ACROSS THE OHIO VALLEY TUESDAY
NIGHT INTO WEDNESDAY. THIS SYSTEM HAS THE POTENTIAL TO BRING
SIGNIFICANT SNOWFALL TO THE REGION TUESDAY AND WEDNESDAY. WHILE
THERE IS STILL SOME UNCERTAINTY AS TO THE EXACT TRACK OF THE
SYSTEM...CURRENT INDICATORS SUGGEST THAT LARGE PORTIONS OF THE
SOUTHERN GREAT LAKES...MIDWEST AND OHIO VALLEY REGIONS MAY RECEIVE
SEVERAL INCHES OF SNOW. AS THE LOW PRESSURE CENTER ASSOCIATED WITH
THIS SYSTEM PASSES THROUGH THE LOWER OHIO VALLEY...THERE WILL BE
AN INCREASED CHANCE FOR LAKE ENHANCED SNOWFALL. LOCALIZED HIGHER
ACCUMULATIONS ARE POSSIBLE FROM THE LAKE ENHANCED SNOW.

DAYTIME TEMPERATURES WILL ONLY TOP OUT IN THE UPPER SINGLE DIGITS
TO MIDDLE TEENS BY THURSDAY AND FRIDAY...WITH OVERNIGHT LOWS
RANGING FROM THE LOWER SINGLE DIGITS ABOVE ZERO TO AROUND 5 BELOW
ZERO. EARLY MORNING WIND CHILLS MAY APPROACH 20 BELOW ZERO FOR
LOCATIONS AWAY FROM LAKE MICHIGAN.

..SIGNIFICANT WINTER STORM TO AFFECT THE SOUTHERN GREAT LAKES
REGION TUESDAY INTO WEDNESDAY...

A PROLONGED PERIOD OF WINTRY WEATHER IS EXPECTED TO AFFECT
NORTHERN ILLINOIS AND NORTHWEST INDIANA NEXT WEEK.

LIGHT SNOW IS EXPECTED TO DEVELOP OVER THE AREA ON MONDAY AND
CONTINUE INTO TUESDAY MORNING...WITH A FEW INCHES OF ACCUMULATION
POSSIBLE.

A POWERFUL STORM SYSTEM IS THEN EXPECTED TO DEVELOP OVER THE
SOUTHERN PLAINS TUESDAY AND MOVE NORTHEAST ACROSS THE OHIO VALLEY
TUESDAY NIGHT INTO WEDNESDAY. IT IS TOO EARLY TO DETERMINE THE
EXACT TRACK OF THIS STORM. SMALL CHANGES IN THE TRACK CAN CAUSE
MAJOR CHANGES TO THE EXPECTED SNOWFALL AMOUNTS AND LOCATIONS.

HOWEVER...IF CURRENT TRENDS CONTINUE...SEVERAL INCHES OF SNOW
WILL BE POSSIBLE ACROSS NORTHERN ILLINOIS AND NORTHWEST INDIANA.
THE SNOW MAY BECOME HEAVY AT TIMES EARLY WEDNESDAY MORNING WITH
MUCH OF THE SNOW FALLING OVER A SHORT PERIOD OF TIME. WINDY
CONDITIONS WILL ALSO DEVELOP TUESDAY NIGHT CAUSING SIGNIFICANT
BLOWING AND DRIFTING SNOW.

THIS STORM SYSTEM WILL AFFECT A LARGE PORTION OF THE SOUTHERN
GREAT LAKES...MIDWEST AND OHIO VALLEY REGIONS. ANYONE WITH TRAVEL
PLANS TUESDAY AND WEDNESDAY...INCLUDING THOSE TRAVELING THROUGH
CHICAGO OHARE AND MIDWAY AIRPORTS...SHOULD CONTINUE TO MONITOR
LATER FORECASTS REGARDING THIS WINTER STORM.

Morning Outlook

DAY ONE...TODAY AND TONIGHT.

THERE IS A CHANCE OF LIGHT SNOW IN NORTH CENTRAL ILLINOIS THIS
AFTERNOON WITH A SLIGHT CHANCE OF LIGHT SNOW AND SNOW SHOWERS
ACROSS THE AREA TONIGHT.
 
.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY.

THERE WILL BE SEVERAL CHANCES FOR LIGHT SNOW AND SNOW SHOWERS
THROUGH THE PERIOD. THE MOST SIGNIFICANT SNOW APPEARS WILL OCCUR
TUESDAY INTO WEDNESDAY...ESPECIALLY ACROSS THE SOUTHERN AND
 EASTERN PORTIONS OF THE AREA WHERE SEVERAL INCHES OF SNOW MAY
ACCUMULATE. ALSO...THERE WILL BE CHANCES OF SNOW SHOWERS ON THE
ILLINOIS SIDE OF LAKE MICHIGAN MONDAY THROUGH WEDNESDAY. LOCALIZED
SIGNIFICANT ACCUMULATIONS ARE POSSIBLE FROM THE LAKE EFFECT SNOWS.
 
DAYTIME TEMPERATURES WILL ONLY TOP OUT IN THE TEENS BY LATER IN
THE WORK WEEK...WITH OVERNIGHT LOWS FROM 2 BELOW TO 8 ABOVE.
PREDAWN AND EARLY MORNING WIND CHILLS WILL BE 10 BELOW TO 15
BELOW THURSDAY AND FRIDAY.
 

--
Gregg Dubin
wxfan1978@gmail.com

Plot continues evolving in next week's storm development. All models now on board with a winter storm and the Weather Service's Hydrological Prediction Center, which issues extended forecast guidance to NWS forecast offices across the country now headlining a "major winter storm setting up next week from the Rockies to... the Northeast". Track uncertainties real--they always are at this early stage.

Outlook/ Another Potential Winter Storm

.DAY ONE...TONIGHT.

THERE IS A CHANCE OF LIGHT SNOW ACROSS NORTHEAST ILLINOIS AND
NORTHWEST INDIANA. THERE IS ALSO A CHANCE OF LIGHT FREEZING
DRIZZLE ACROSS THE ENTIRE AREA...MAINLY FROM LATE EVENING THROUGH
THE PREDAWN HOURS.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY.

LIGHT SNOW IS POSSIBLE LATE SUNDAY NIGHT INTO MONDAY EVENING AS
EASTERLY FLOW DEVELOPS OFF LAKE MICHIGAN. SOME ACCUMULATION IS
POSSIBLE.

A WINTER STORM IS EXPECTED TO MOVE NORTHEAST ACROSS THE OHIO
RIVER VALLEY TUESDAY INTO WEDNESDAY. THERE IS STILL A HIGH DEGREE
OF UNCERTAINTY WITH THIS STORM...MAKING SPECIFIC SNOWFALL AMOUNTS
AND LOCATIONS DIFFICULT TO PREDICT AT THIS TIME. HOWEVER...IF
CURRENT TRENDS CONTINUE...A PERIOD OF HEAVY SNOW IS POSSIBLE OVER
THE SOUTHERN GREAT LAKES REGION WITH SEVERAL INCHES OF SNOW
POSSIBLE. ANYONE WITH TRAVEL PLANS NEXT TUESDAY AND WEDNESDAY
SHOULD MONITOR LATER FORECASTS REGARDING THIS POTENTIAL WINTER
STORM.

...MORNING SNOWFALL ROUNDUP...

THE FOLLOWING ARE SNOW AMOUNTS FOR THE PREVIOUS 24-HOURS.
OBSERVATIONS ARE USUALLY TAKEN AT 7 AM.

24-HOUR SNOWFALL AMOUNTS FOR FRIDAY(01/28/11)...

NORTHERN ILLINOIS                              SNOW
LOCATION (COUNTY):                           FALL(INCHES)

ROCHELLE (OGLE)...............................3.0
PERU (LA SALLE)...............................2.8
NEWARK (KENDALL)..............................2.5
MARENGO (MCHENRY).............................2.3
ELBURN 3NNE (KANE)............................2.2
SHABBONA (DE KALB)............................2.2
COAL CITY 4NNW (GRUNDY).......................2.1
GENOA (DE KALB)...............................2.1
JOLIET 2N (WILL)..............................2.1
DRESDEN LOCK/DAM (GRUNDY).....................2.0
POPLAR GROVE 5NNE (BOONE).....................2.0
ASHTON (LEE)..................................2.0
SENECA 1NE (LA SALLE).........................2.0
MANHATTAN 5ENE (WILL).........................2.0
MARSEILLES (LA SALLE).........................2.0
MORRIS (GRUNDY)...............................2.0
OTTAWA (LA SALLE).............................2.0
WOODSTOCK 5NW (MCHENRY).......................2.0
YORKVILLE 2SE (KENDALL).......................2.0
OTTAWA 2N (LA SALLE)..........................1.9
SPRING GROVE 2N (MCHENRY).....................1.9
OTTAWA 1NW (LA SALLE).........................1.8
SHERIDAN (LA SALLE)...........................1.8
PERU 1SW (LA SALLE)...........................1.8
LA SALLE (LA SALLE)...........................1.8
BULL VALLEY 2WNW (MCHENRY)....................1.8
WONDER LAKE 1WNW (MCHENRY)....................1.8
PEOTONE (WILL)................................1.8
ROMEOVILLE (WILL).............................1.8
PAW PAW (LEE).................................1.8
PEOTONE (WILL)................................1.8
YORKVILLE 1NE (KENDALL).......................1.7
BEACH PARK 1W (LAKE)..........................1.7
PEOTONE (WILL)................................1.7
MCHENRY (MCHENRY).............................1.7
STEWARD (LEE).................................1.7
DIXON 3NNW (LEE)..............................1.6
HAWTHORN WOODS 1N (LAKE)......................1.6
MONTGOMERY 1SSE (KENDALL).....................1.5
LAKE VILLA 1SSW (LAKE)........................1.5
MENDOTA (LA SALLE)............................1.5
HOFFMAN ESTATES 5W (COOK).....................1.4
YORKVILLE 1W (KENDALL)........................1.4
CRETE 3E (WILL)...............................1.4
BATAVIA (KANE)................................1.3
CHICAGO RIDGE (COOK)..........................1.3
WESTMONT 1SSE (DU PAGE).......................1.3
MONTGOMERY 2SSE (KENDALL).....................1.3
CARY 2NE (MCHENRY)............................1.3
HUNTLEY 4W (MCHENRY)..........................1.3
HOMER GLEN 1ENE (WILL)........................1.3
ROSCOE 2ESE (WINNEBAGO).......................1.3
OREGON (OGLE).................................1.3
ROSCOE 2SE (WINNEBAGO)........................1.3
ST CHARLES 7NW (KANE).........................1.3
WAUCONDA (LAKE)...............................1.3
BOURBONNAIS (KANKAKEE)........................1.2
INVERNESS 2S (COOK)...........................1.2
ORLAND HILLS 1S (COOK)........................1.2
DOWNERS GROVE 2SE (DU PAGE)...................1.2
LINCOLNSHIRE 1.3WSW (LAKE)....................1.2
JOLIET LOCK/DAM (WILL)........................1.2
ROCKFORD (WINNEBAGO)..........................1.2
ST ANNE (KANKAKEE)............................1.2
EARLVILLE 3S (LA SALLE).......................1.1
PARK FOREST 1NNE (COOK).......................1.1
BATAVIA 1WNW (KANE)...........................1.1
BYRON 3N (OGLE)...............................1.1
ROCKTON 1ESE (WINNEBAGO)......................1.1
MUNDELEIN (LAKE)..............................1.1
DE KALB (DE KALB).............................1.0
ELBURN (KANE).................................1.0
ELGIN (KANE)..................................1.0
HARVARD (MCHENRY).............................1.0
WORTH (COOK)..................................1.0
LA GRANGE PARK 1SSW (COOK)....................1.0
LISLE (DU PAGE)...............................1.0
LISLE 1SE (DU PAGE)...........................1.0
NAPERVILLE 2ENE (DU PAGE).....................1.0
WATSEKA 5W (IROQUOIS).........................1.0
BATAVIA 2WNW (KANE)...........................1.0
WAUKEGAN 2N (LAKE)............................1.0
ALGONQUIN 1N (MCHENRY)........................1.0
ROCKFORD 1NW (WINNEBAGO)......................1.0
ROCKFORD 3NE (WINNEBAGO)......................1.0
PARK FOREST (COOK)............................1.0
ROCKFORD 4NW (WINNEBAGO)......................1.0
STREATOR (LIVINGSTON).........................1.0
WINFIELD (DU PAGE)............................1.0
SUGAR GROVE 1NE (KANE)........................0.9
ST. CHARLES 6NW (KANE)........................0.9
LAKE ZURICH (LAKE)............................0.9
MIDWAY 3SW (COOK).............................0.9
OAK BROOK (DU PAGE)...........................0.9
WILLOW SPRINGS (COOK).........................0.9
HERSCHER (KANKAKEE)...........................0.8
CHICAGO 6ESE (COOK)...........................0.8
GENEVA 2WSW (KANE)............................0.8
LINCOLNSHIRE 1N (LAKE)........................0.8
RIVERWOODS (LAKE).............................0.8
ELGIN (KANE)..................................0.7
COUNTRYSIDE 1ENE (COOK).......................0.7
LOMBARD 1NNW (DU PAGE)........................0.7
ELGIN 1S (KANE)...............................0.7
LA GRANGE (COOK)..............................0.7
OAK PARK 2S (COOK)............................0.6
OAK PARK 1NNE (COOK)..........................0.6
ELK GROVE VILLAGE 2WSW (COOK).................0.6
MILFORD (IROQUOIS)............................0.6
OHARE (COOK)..................................0.6
STREAMWOOD (COOK).............................0.6
CHATSWORTH (LIVINGSTON).......................0.5
PALATINE 1E (COOK)............................0.5
EVERGREEN PARK (COOK).........................0.5
STICKNEY 1W (COOK)............................0.5
LINCOLNWOOD 2E (COOK).........................0.5
CHATSWORTH (LIVINGSTON).......................0.5
BOTANIC GARDENS (COOK)........................0.4
WATSEKA (IROQUOIS)............................0.4
DWIGHT (LIVINGSTON)...........................0.3
FAIRBURY (LIVINGSTON).........................0.3
PONTIAC (LIVINGSTON)..........................0.3
PAXTON (FORD).................................0.2
BARRINGTON (LAKE).............................0.1
PAXTON (FORD)...............................TRACE

NORTHWEST INDIANA                              SNOW
LOCATION (COUNTY):                           FALL(INCHES)

DE MOTTE 1NNW (JASPER)........................2.5
HOBART 2E (LAKE)..............................2.2
WHEATFIELD 3S (JASPER)........................1.9
LAKE VILLAGE (NEWTON).........................1.9
LAKES OF THE FOUR SEASONS 2NNE (PORTER).......1.8
VALPARAISO 5NNE (PORTER)......................1.8
REMINGTON (JASPER)............................1.8
VALPARAISO 5NNE (PORTER)......................1.8
HEBRON 4NE (PORTER)...........................1.7
DYER 1WNW (LAKE)..............................1.6
RENSSELAER (JASPER)...........................1.6
PORTAGE 1ESE (PORTER).........................1.5
PORTER 1S (PORTER)............................1.5
DE MOTTE 4SW (JASPER).........................1.4
VALPARAISO 6WSW (PORTER)......................1.4
CROWN POINT 2WSW (LAKE).......................1.2
CROWN POINT 1N (LAKE).........................1.2
VALPARAISO 1ENE (PORTER)......................1.2
VALPARAISO 1NNW (PORTER)......................1.2
VALPARAISO 2N (PORTER)........................1.1
VALPARAISO 1SE (PORTER).......................1.0
REMINGTON (JASPER)............................0.9
HAMMOND 3SW (LAKE)............................0.9
SCHERERVILLE 2WSW (LAKE)......................0.8
VALPARAISO 4SW (PORTER).......................0.6
MOROCCO (NEWTON)..............................0.5
LOWELL (LAKE).................................0.1

 

Morning Outlook

DAY ONE...TODAY AND TONIGHT.

THERE IS A CHANCE OF LIGHT SNOW ACROSS FAR NORTHER ILLINOIS THIS
AFTERNOON. THERE IS A SLIGHT CHANCE OF LIGHT SNOW AND LIGHT
FREEZING DRIZZLE TONIGHT OVER FAR NORTH CENTRAL AND FAR NORTHEAST
ILLINOIS AS WELL AS NORTHWEST INDIANA.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY.

THERE IS A CHANCE OF PERIODIC LIGHT SNOW AND SNOW SHOWERS ACROSS
THE AREA LATE SUNDAY NIGHT THROUGH WEDNESDAY.

Afternoon Outlook

.DAY ONE...TONIGHT.

LIGHT SNOW WILL CONTINUE EARLY THIS EVENING SOUTH OF A LINE
FROM PONTIAC TO VALPARAISO. NEW SNOW ACCUMULATIONS WILL BE LESS
THAN ONE INCH.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY.

PATCHY LIGHT FREEZING DRIZZLE IS POSSIBLE ACROSS THE ENTIRE
AREA FRIDAY NIGHT...ALONG WITH A CHANCE OF LIGHT SNOW ACROSS
FAR NORTHEAST ILLINOIS AND NORTHWEST INDIANA.

Snow totals Thursday: 3.1" Kenosha; 2" Joliet; 1.4 DeKalb; 1.1" Rockford; Island Lake 1.1" St. Charles 1.3"; Downers Grove 1". Steadiest snows settling southeastward out of Chicago south suburbs. City snowfalls Thursday: 0.9" Midway and 0.6" O'Hare

Morning Outlook

.DAY ONE...TODAY AND TONIGHT.

A PERIOD OF SNOW IS EXPECTED TO DEPOSIT AN INCH OR SO OF
ACCUMULATION TODAY...ESPECIALLY NORTHEAST OF A ROCKFORD TO
RENSSELAER INDIANA LINE.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

Afternoon Outlook

.DAY ONE...TONIGHT.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.

SNOW IS EXPECTED TO DEVELOP THURSDAY MORNING...WITH SOME
ACCUMULATION LIKELY ESPECIALLY NORTHEAST OF A LINE FROM ROCKFORD
ILLINOIS TO RENSSELAER INDIANA. SNOW ACCUMULATIONS OF AN INCH OR
TWO ARE POSSIBLE.

The latest model run out of the European Center remains aggressive in developing an early week winter storm which could impact the Midwest Monday night and Tuesday--with a strong arctic outbreak to follow. The operational run of the model leans toward snow with this system. The Wx Svc's GFS is indicating snow Monday for the first time. Much can happen between now and then--but this is one to watch!

Winter Storm to Impact East Coast Today

Winter storm expected through much of the Tennessee Valley northeastward into the central Appalachians and southeastern New England.

Morning Outlook

.DAY ONE...TODAY AND TONIGHT.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.

SNOW IS LIKELY THURSDAY...ESPECIALLY NORTHEAST OF A DIXON ILLINOIS
TO RENSSELAER LINE. SNOW ACCUMULATIONS OF AN INCH OR TWO ARE
POSSIBLE.

Afternoon Outlook

DAY ONE...TONIGHT.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY.

LIGHT SNOW IS POSSIBLE WEDNESDAY AND WEDNESDAY NIGHT. THERE WILL
BE A CHANCE OF SNOW FRIDAY AND MONDAY. VERY COLD TEMPERATURES
ARE EXPECTED SUNDAY THROUGH MONDAY NIGHT.

Afternoon Outlook

.DAY ONE...TONIGHT.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY.

THERE WILL BE A CHANCE OF LIGHT SNOW OR FREEZING DRIZZLE MONDAY.
THERE WILL BE A CHANCE OF LAKE EFFECT SNOW THURSDAY AND THEN
AGAIN FRIDAY NIGHT THROUGH SUNDAY. THIS CHANCE OF SNOW WILL
BE FOR NORTHWEST INDIANA.

Morning Outlook

.DAY ONE...TODAY AND TONIGHT.

LAKE EFFECT SNOW SHOWERS WILL MOVE SOUTHWEST ACROSS AREAS
IMMEDIATELY ALONG THE ILLINOIS AND INDIANA SHORE OF LAKE MICHIGAN
EARLY THIS MORNING...AND THEN CONTINUE TO SHIFT BACK NORTH OUT OF
THE AREA BY MID MORNING. SNOW FALL RATES WILL VARY FROM MODERATE
TO HEAVY SNOWFALL AT TIMES WITH SNOWFALL RATES OF AN INCH AN HOUR
POSSIBLE AT TIMES. IN THE HEAVIEST SNOW...VISIBILITY WILL BE
REDUCED TO A MILE OR LESS WITH SNOW QUICKLY ACCUMULATING ON AREA
ROADS AND HIGHWAYS.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY.

LIGHT SNOW IS POSSIBLE FOR THE ENTIRE OUTLOOK AREA EARLY MONDAY
MORNING THROUGH MONDAY NIGHT.

Afternoon Outlook

.DAY ONE...TONIGHT.

LAKE EFFECT SNOW SHOWERS ARE POSSIBLE OVER PORTER COUNTY.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY.

SCATTERED LAKE EFFECT SNOW SHOWERS ARE POSSIBLE IN THE VISCINITY
OF THE ILLINOIS SHORE OF LAKE MICHIGAN FROM LATE MORNING TO EARLY
AFTERNOON SUNDAY.

LIGHT SNOW IS POSSIBLE FOR THE ENTIRE OUTLOOK AREA EARLY MONDAY
MORNING THROUGH TUESDAY MORNING.

Outlook

.DAY ONE...TODAY AND TONIGHT.

LIGHT SNOW WILL CONTINUE THIS MORNING...ALTHOUGH ANY ADDITIONAL
ACCUMULATION SHOULD BE LESS THAN AN INCH.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY.

SCATTERED LAKE EFFECT SNOW SHOWERS WILL BE POSSIBLE ACROSS
NORTHWEST INDIANA EARLY SUNDAY MORNING...AND THEN POSSIBLY AFFECT
THE ILLINOIS SHORE BY MID DAY SUNDAY.

LIGHT SNOW IS POSSIBLE FOR THE ENTIRE OUTLOOK AREA MONDAY THROUGH
TUESDAY MORNING.

Outlook

.DAY ONE...TONIGHT.

LIGHT SNOW WILL LIKELY DEVELOP OVERNIGHT...THOUGH ANY
ACCUMULATIONS SHOULD BE LESS THAN AN INCH.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY.

SCATTERED LAKE EFFECT SNOW SHOWERS ARE POSSIBLE SUNDAY FOR
NORTHERN COOK AND LAKE COUNTIES IN ILLINOIS.

PERIODS OF LIGHT SNOW ARE POSSIBLE FOR THE ENTIRE OUTLOOK AREA
SUNDAY NIGHT THROUGH TUESDAY MORNING. THE BEST CHANCE FOR
ACCUMULATING SNOW SHOULD BE CONFINED TO LOCATIONS SOUTH OF
INTERSTATE 80.

..WIND CHILL ADVISORY HAS EXPIRED...

THE WIND CHILL ADVISORY IS NO LONGER IN EFFECT.

WINDS WILL CONTINUE TO DIMINISH TO LESS THAN 10 MPH DURING THE
AFTERNOON AS HIGH PRESSURE MOVES ACROSS THE AREA. TEMPERATURES
WILL SLOWLY RISE THROUGH THE SINGLE DIGITS.

Morning temps have hit 3-below at O'Hare (wind chill -20)--coldest in 2 years! Other area lows & 7am temps: -12 Rochelle, -8 Aurora & Rockford, -7 DeKalb (chill there -26 at 7am); -6 West Chicago; -5 Waukegan; -2 Joliet; +3 Northerly Island, +1 Lansing & Kankakee.

A WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 11 AM CST /NOON
EST/ THIS MORNING.

* WIND CHILL VALUE...WINDS CHILLS OF 15 TO 30 BELOW ZERO EARLY
THIS MORNING WILL SLOWLY MODERATE BY MID TO LATE MORNING AS
WINDS CONTINUE TO SUBSIDE AND TEMPERATURES BEGIN TO SLOWLY RISE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WIND CHILL ADVISORY MEANS THAT VERY COLD AIR WILL COMBINE WITH
THE WIND TO GENERATE LOW WIND CHILLS. THIS WILL RESULT IN FROST
BITE AND LEAD TO HYPOTHERMIA IF PRECAUTIONS ARE NOT TAKEN. IF YOU
MUST VENTURE OUTDOORS...MAKE SURE YOU WEAR A HAT AND GLOVES.

BRING PETS INDOORS. PETS CAN SUFFER FROM FROST AND HYPOTHERMIA
SIMILAR TO THEIR HUMAN CAREGIVERS.

Outlook

.DAY ONE...TODAY AND TONIGHT.

WINDS CHILLS OF 15 TO 30 BELOW ARE LIKELY THIS MORNING.

LIGHT SNOW WILL LIKELY DEVELOP OVERNIGHT...THOUGH ANY
ACCUMULATIONS SHOULD BE LESS THAN AN INCH.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

Outlook

.DAY ONE...TONIGHT.

A COLD FRONT WILL PUSH INTO THE AREA LATE THIS AFTERNOON...AND
WILL USHER IN VERY COLD ARCTIC AIR TO THE REGION OVERNIGHT.
TEMPERATURES WILL FALL BELOW ZERO OVER MUCH OF THE AREA
TONIGHT...WITH THE LOWEST TEMPERATURES OF 10 TO 12 BELOW ZERO
OVER NORTH CENTRAL ILLINOIS. THESE TEMPERATURES WILL COMBINE WITH
GUSTY NORTHWEST WINDS TO PRODUCE DANGEROUSLY LOW WIND CHILLS AS
LOW AS 25 BELOW ZERO BY EARLY FRIDAY MORNING.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY.

TEMPERATURES WILL BE BELOW ZERO IN MANY AREAS FRIDAY MORNING...
WITH DANGEROUS WIND CHILL READINGS AS LOW AS 25 BELOW POSSIBLE.
DIMINISHING WINDS WILL ALLOW WIND CHILLS TO RISE INTO THE 5 BELOW
TO 10 BELOW RANGE BY MIDDAY.

THERE WILL BE ANOTHER CHANCE OF ACCUMULATING SNOW FRIDAY NIGHT
INTO EARLY SATURDAY. SNOWFALL AMOUNTS OF LESS THAN 1 INCH ARE
POSSIBLE ACROSS ILLINOIS PORTIONS OF THE OUTLOOK AREA...MAINLY
WEST OF A ROCKFORD TO WATSEKA LINE.

...ARCTIC AIR MASS ARRIVES THIS EVENING...

.ARCTIC AIR WILL SPREAD INTO THE MIDWEST BY EARLY THIS EVENING.
AS THE ARCTIC AIR OVERSPREADS THE REGION...TEMPERATURES WILL
QUICKLY DROP INTO THE SINGLE DIGITS SHORTLY AFTER SUNSET...AND
WILL CONTINUE TO FALL OVERNIGHT. MUCH OF THE AREA WILL SEE LOW
TEMPERATURES NEAR OR BELOW ZERO. WITH WINDS OF 15 TO 25 MPH
EXPECTED TO PERSIST THROUGH THE NIGHT...WIND CHILL READINGS OF
20 TO 29 BELOW ZERO ARE EXPECTED. THE ADVISORY INCLUDES THE
URBANIZED AREAS OF THE CHICAGO AND ROCKFORD METRO AREAS...AS WELL
AS...THE MORE RURAL PORTIONS OF THE REGION.

A WIND CHILL ADVISORY REMAINS IN EFFECT FROM 9 PM CST /10 PM EST/
THIS EVENING TO 11 AM CST /NOON EST/ FRIDAY.

* TIMING...AN ARCTIC COLD FRONT WILL MOVE INTO THE AREA DURING
THE LATE AFTERNOON AND EARLY EVENING HOURS. GUSTY NORTHWEST
WINDS OF 15 TO 25 MPH WILL WILL ACCOMPANY THE FRONTAL
PASSAGE... AND WILL PERSIST THROUGH DAYBREAK FRIDAY.
TEMPERATURES WILL FALL QUICKLY DURING THE EVENING...AND WILL
BE NEAR OR BELOW ZERO BY THE PREDAWN HOURS OF FRIDAY MORNING.

* WIND CHILL VALUES...BETWEEN 20 AND 29 DEGREES BELOW ZERO LATE
TONIGHT AND EARLY FRIDAY.

* IMPACTS...WIND CHILL VALUES AT THIS LEVEL WILL CAUSE FROSTBITE
TO EXPOSED SKIN WITHIN 30 MINUTES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WIND CHILL ADVISORY MEANS THAT VERY COLD AIR AND STRONG WINDS
WILL COMBINE TO GENERATE LOW WIND CHILLS. THIS WILL RESULT IN
FROST BITE AND LEAD TO HYPOTHERMIA IF PRECAUTIONS ARE NOT TAKEN.
IF YOU MUST VENTURE OUTDOORS...MAKE SURE YOU WEAR A HAT AND
GLOVES.

BRING PETS INDOORS. PETS CAN SUFFER FROM FROST AND HYPOTHERMIA
SIMILAR TO THEIR HUMAN CAREGIVERS.

A WIND CHILL ADVISORY REMAINS IN EFFECT FROM 9 PM CST /10 PM EST/
THIS EVENING TO 11 AM CST /NOON EST/ FRIDAY.

* TIMING...AN ARCTIC COLD FRONT WILL MOVE INTO THE AREA DURING THE
LATE AFTERNOON AND EARLY EVENING HOURS. GUSTY NORTHWEST WINDS
OF 15 TO 25 MPH WILL WILL ACCOMPANY THE FRONTAL PASSAGE...AND
WILL PERSIST THROUGH DAYBREAK FRIDAY. TEMPERATURES WILL FALL
QUICKLY DURING THE EVENING...AND WILL BE NEAR OR BELOW ZERO BY
THE PREDAWN HOURS OF FRIDAY MORNING.

* WIND CHILL VALUES...BETWEEN 20 AND 29 DEGREES BELOW ZERO LATE
TONIGHT AND EARLY FRIDAY.

* IMPACTS...WIND CHILL VALUES AT THIS LEVEL WILL CAUSE FROSTBITE
TO EXPOSED SKIN WITHIN 30 MINUTES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WIND CHILL ADVISORY MEANS THAT VERY COLD AIR AND STRONG WINDS
WILL COMBINE TO GENERATE LOW WIND CHILLS. THIS WILL RESULT IN
FROST BITE AND LEAD TO HYPOTHERMIA IF PRECAUTIONS ARE NOT TAKEN.
IF YOU MUST VENTURE OUTDOORS...MAKE SURE YOU WEAR A HAT AND
GLOVES.

BRING PETS INDOORS. PETS CAN SUFFER FROM FROST AND HYPOTHERMIA
SIMILAR TO THEIR HUMAN CAREGIVERS.

Outlook

.DAY ONE...TODAY AND TONIGHT.

ACCUMULATING SNOW IS POSSIBLE THIS MORNING AND EARLY THIS
AFTERNOON ACROSS PORTIONS OF THE OUTLOOK AREA GENERALLY SOUTH OF
THE PONTIAC...KANKAKEE AND DE MOTTE AREAS. SNOWFALL AMOUNTS OF
AROUND AN INCH ARE POSSIBLE...WITH GREATER ACCUMULATION FARTHER
SOUTH INTO CENTRAL ILLINOIS AND CENTRAL INDIANA.

A COLD FRONT WILL PUSH INTO THE AREA LATE THIS AFTERNOON...AND
WILL BRING VERY COLD ARCTIC AIR TO THE REGION TONIGHT AND FRIDAY.
TEMPERATURES WILL FALL INTO THE SINGLE DIGITS BELOW ZERO IN MANY
AREAS TONIGHT...AND THESE TEMPERATURES WILL COMBINE WITH GUSTY
NORTHWEST WINDS TO PRODUCE DANGEROUSLY LOW WIND CHILLS AS LOW AS
25 BELOW ZERO BY EARLY FRIDAY MORNING.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY.

TEMPERATURES WILL BE BELOW ZERO IN MANY AREAS FRIDAY MORNING...
WITH DANGEROUS WIND CHILL READINGS AS LOW AS 25 BELOW POSSIBLE.
DIMINISHING WINDS WILL ALLOW WIND CHILLS TO RISE INTO THE 5 BELOW
TO 10 BELOW RANGE BY MIDDAY.

THERE WILL BE ANOTHER CHANCE OF ACCUMULATING SNOW FRIDAY NIGHT
INTO EARLY SATURDAY. SNOWFALL AMOUNTS OF 1 TO 2 INCHES ARE
POSSIBLE ACROSS ILLINOIS PORTIONS OF THE OUTLOOK AREA...MAINLY
WEST OF A ROCKFORD TO KANKAKEE LINE.

..WIND CHILL ADVISORY REMAINS IN EFFECT FROM 9 PM CST /10 PM
EST/ THURSDAY TO 11 AM CST /NOON EST/ FRIDAY...

A WIND CHILL ADVISORY REMAINS IN EFFECT FROM 9 PM CST /10 PM EST/
THURSDAY TO 11 AM CST /NOON EST/ FRIDAY.

* TIMING...GUSTY NORTHWEST WINDS OF 15 TO 25 MPH WILL DEVELOP
THURSDAY AFTERNOON AND PERSIST THROUGH DAYBREAK FRIDAY.
OCCASIONAL WIND GUSTS TO 30 MPH ARE ALSO POSSIBLE THURSDAY
EVENING.

* WIND CHILL VALUES...BETWEEN 20 AND 29 DEGREES BELOW ZERO
THURSDAY EVENING THROUGH DAYBREAK FRIDAY.

* IMPACTS...WIND CHILL VALUES AT THIS LEVEL WILL CAUSE FROSTBITE
TO EXPOSED SKIN WITHIN 30 MINUTES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WIND CHILL ADVISORY MEANS THAT VERY COLD AIR AND STRONG WINDS
WILL COMBINE TO GENERATE LOW WIND CHILLS. THIS WILL RESULT IN
FROST BITE AND LEAD TO HYPOTHERMIA IF PRECAUTIONS ARE NOT TAKEN.
IF YOU MUST VENTURE OUTDOORS...MAKE SURE YOU WEAR A HAT AND
GLOVES.

BRING PETS INDOORS. PETS CAN SUFFER FROM FROST AND HYPOTHERMIA
SIMILAR TO THEIR HUMAN CAREGIVERS.

Outlook

.DAY ONE...TONIGHT.

ACCUMULATING SNOW IS POSSIBLE TONIGHT AND EARLY THURSDAY...
GENERALLY SOUTH OF THE ILLINOIS AND KANKAKEE RIVERS. PRESENT
INDICATORS SUGGEST THAT 1 TO 2 INCHES OF SNOW ARE POSSIBLE SOUTH
OF A PONTIAC TO RENSSELAER LINE. LIGHTER SNOW IS EXPECTED TO THE
NORTH OF THIS AREA.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.

VERY COLD AIR IS EXPECTED TO SETTLE ACROSS THE MIDWEST AND GREAT
LAKES REGIONS THURSDAY NIGHT AND FRIDAY. TEMPERATURES WILL LIKELY
FALL BELOW ZERO OVER MUCH OF NORTHERN ILLINOIS BY EARLY FRIDAY
MORNING. TEMPERATURES OVER CENTRAL ILLINOIS AND NORTHWESTERN
INDIANA WILL DROP INTO THE LOW SINGLE DIGITS. HIGHS ON FRIDAY ARE
EXPECTED TO BE ONLY IN THE SINGLE DIGITS IN SOME AREAS. BLUSTERY
NORTHWEST WINDS WILL PRODUCE WIND CHILLS OF 20 TO 29 BELOW ZERO BY
EARLY FRIDAY...WITH THE LOWEST WIND CHILLS OVER NORTH CENTRAL
ILLINOIS. HOWEVER...EVEN THE HIGHLY URBANIZED AREAS OF THE CHICAGO
METRO AREA SHOULD SEE WIND CHILLS APPROACHING 20 BELOW ZERO.

Wind Chill Advisory

..WIND CHILL ADVISORY IN EFFECT FROM 9 PM CST /10 PM EST/
THURSDAY TO 11 AM CST /NOON EST/ FRIDAY...

THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A WIND CHILL
ADVISORY...WHICH IS IN EFFECT FROM 9 PM CST /10 PM EST/ THURSDAY
TO 11 AM CST /NOON EST/ FRIDAY.

* WIND CHILL VALUES...20 TO 29 BELOW ZERO.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WIND CHILL ADVISORY MEANS THAT VERY COLD AIR AND STRONG WINDS
WILL COMBINE TO GENERATE LOW WIND CHILLS. THIS WILL RESULT IN
FROST BITE AND LEAD TO HYPOTHERMIA IF PRECAUTIONS ARE NOT TAKEN.
IF YOU MUST VENTURE OUTDOORS...MAKE SURE YOU WEAR A HAT AND
GLOVES.

BRING PETS INDOORS. DOGS AND CATS CAN SUFFER FROM FROST AND
HYPOTHERMIA JUST LIKE THEIR HUMAN CAREGIVERS.

Outlook

.DAY ONE...TODAY AND TONIGHT.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.

ACCUMULATING SNOW IS POSSIBLE TONIGHT AND THURSDAY...GENERALLY
SOUTH OF STATE ROUTE 17 IN ILLINOIS...AND SOUTH OF THE KANKAKEE
RIVER IN NORTHWEST INDIANA. PRESENT INDICATIONS SUGGEST THAT 1 TO
2 INCHES OF SNOW ARE POSSIBLE ACROSS THESE AREAS.

VERY COLD AIR IS EXPECTED TO SETTLE ACROSS THE MIDWEST THURSDAY
NIGHT AND FRIDAY. TEMPERATURES WILL LIKELY FALL BELOW ZERO ACROSS
SNOW COVERED AREAS OF NORTHERN ILLINOIS BY EARLY FRIDAY MORNING...
WITH HIGHS ON FRIDAY EXPECTED TO BE ONLY IN THE SINGLE DIGITS IN
SOME AREAS. BLUSTERY NORTHWEST WINDS MAY PRODUCE WIND CHILLS AS
LOW AS 25 BELOW BY EARLY FRIDAY...MAINLY OVER NORTH CENTRAL
ILLINOIS.

Special Weather Statement

..FREEZING DRIZZLE THIS EVENING FOR NORTHERN ILLINOIS...

PATCHY FREEZING DRIZZLE CONTINUES TO SLOWLY SLIDE EAST SOUTHEAST
ACROSS NORTHERN ILLINOIS THIS EVENING. THIS WILL RESULT IN SOME
SLICK SPOTS ON UNTREATED ROADS...BRIDGES...AND OVERPASSES.
FREEZING DRIZZLE IS EXPECTED TO END BY MIDNIGHT AS DRIER AIR
SLOWLY SLIDES INTO THE REGION. IF TRAVELING THIS
EVENING...ALLOW EXTRA TIME IN REACHING YOUR DESTINATION.

.NOW...
PATCHY FREEZING DRIZZLE AND LIGHT SNOW CONTINUES TO SLIDE EAST
SOUTHEAST ACROSS NORTHEAST ILLINOIS. AT 520 PM THE BACK EDGE OF
PATCHY FREEZING DRIZZLE WAS LOCATED FROM
WINTHROP HARBOR TO MENDOTA...MOVING EAST AT 25 MPH.

LOCATIONS THAT MAY BE AFFECTED INCLUDE...
AURORA...BOLINGBROOK...CHANNAHON...CHICAGO...DE KALB...DUPAGE
AIRPORT...EVANSTON...HOFFMAN ESTATES...JOLIET...KANKAKEE...MCHENRY...
NAPERVILLE...OSWEGO...AND YORKVILLE.

PRECIPITATION IS NOT EXPECTED TO POSE AN IMPACT TO MOTORISTS THIS
EVENING...HOWEVER UNTREATED SIDEWALKS AND LESS TRAVELED ROADS MAY
HAVE SOME SLICK SPOTS.

Outlook

.DAY ONE...TONIGHT.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY.

ACCUMULATING SNOW IS POSSIBLE...GENERALLY SOUTH OF STATE ROUTE
17 IN ILLINOIS AND ACROSS ALL OF NORTHWEST INDIANA WEDNESDAY
NIGHT INTO THURSDAY. PRESENT INDICATIONS SUGGEST THAT 1 TO 3
INCHES OF SNOW IS POSSIBLE ACROSS THESE AREAS.

VERY COLD AIR IS EXPECTED TO SETTLE ACROSS THE MIDWEST THURSDAY
NIGHT AND FRIDAY. TEMPERATURES WILL LIKELY FALL BELOW ZERO ACROSS
SNOW COVERED AREAS OF NORTHERN ILLINOIS BY EARLY FRIDAY
MORNING...WITH HIGHS ON FRIDAY EXPECTED TO BE ONLY IN THE SINGLE
DIGITS IN SOME AREAS. BLUSTERY NORTHWEST WINDS MAY PRODUCE WIND
CHILLS AS LOW AS 25 BELOW BY EARLY FRIDAY...MAINLY OVER NORTH
CENTRAL ILLINOIS.

Outlook

DAY ONE...TODAY AND TONIGHT.

A BRIEF PERIOD OF LOCALLY DENSE FOG IS POSSIBLE EARLY THIS MORNING
ACROSS NORTHEAST ILLINOIS AND NORTHWEST INDIANA. VISIBILITY MAY BE
REDUCED TO A HALF MILE OR LESS IN A FEW LOCATIONS FOR A SHORT
TIME.

RECENT WET SNOW...SLEET AND RAIN HAS LED TO ICY CONDITIONS ON
UNTREATED ROADS...PARKING LOTS AND SIDEWALKS. TEMPERATURES WILL
FALL BELOW FREEZING TODAY WHICH MAY CAUSE ICY CONDITIONS TO
PERSIST.

LIGHT LAKE EFFECT SNOW SHOWERS MAY PRODUCE MINOR ACCUMULATIONS OF
UP TO AN INCH ACROSS PORTIONS OF NORTHWEST INDIANA TONIGHT.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY.

ACCUMULATING SNOW WILL BE POSSIBLE WEDNESDAY NIGHT AND THURSDAY
WITH A STORM SYSTEM WHICH WILL MOVE THROUGH THE MIDWEST. AT THIS
TIME THE GREATEST ACCUMULATION IS EXPECTED TO OCCUR ACROSS CENTRAL
ILLINOIS AND CENTRAL INDIANA...THOUGH PRESENT INDICATIONS SUGGEST
THAT 1 TO 3 INCHES OF SNOW IS POSSIBLE MAINLY SOUTH OF INTERSTATE
80.

BITTER COLD ARCTIC AIR IS EXPECTED TO SURGE INTO THE MIDWEST
THURSDAY NIGHT AND FRIDAY. TEMPERATURES WILL LIKELY FALL BELOW
ZERO ACROSS MUCH OF NORTHERN ILLINOIS AND NORTHWEST INDIANA
BY EARLY FRIDAY MORNING...WITH HIGHS ON FRIDAY EXPECTED TO BE ONLY
IN THE SINGLE DIGITS. BLUSTERY NORTHWEST WINDS MAY COMBINE WITH
VERY COLD AIR TEMPERATURES TO PRODUCE WIND CHILLS AS LOW AS 25

THE NATIONAL WEATHER SERVICE IN CHICAGO HAS CANCELLED THE WINTER
WEATHER ADVISORY.

PRECIPITATION HAS DIMINISHED TO A FEW SCATTERED FLURRIES OR LIGHT
SNOW SHOWERS EARLY THIS MORNING ACROSS MOST OF NORTHERN ILLINOIS.
NO ADDITIONAL SIGNIFICANT SNOW OR ICE ACCUMULATION IS EXPECTED.
WHILE TEMPERATURES WERE AT OR JUST ABOVE FREEZING ACROSS THE AREA
EARLY THIS MORNING...SOME UNTREATED OR LIGHTLY TRAVELED ROADS ARE
ICY DUE TO COLD GROUND CONDITIONS. PARKING LOTS AND SIDEWALKS MAY
ALSO BE SLIPPERY. WITH TEMPERATURES FALLING INTO THE 20S BEHIND A
COLD FRONT THIS MORNING...SLIPPERY CONDITIONS MAY PERSIST. USE
CAUTION THIS MORNING WHETHER TRAVELING BY VEHICLE...OR ON FOOT.

AFFECTED COUNTIES:
IN ILLINOIS: BOONE, DEKALB, KANE, KENDALL, LA SALLE, LAKE, LEE, MCHENRY, OGLE, WINNEBAGO.


A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 AM CST
TUESDAY.

* TIMING...LIGHT TO MODERATE SNOW...WILL CONTINUE TO MIX WITH RAIN
FOR A TIME THIS EVENING BEFORE TEMPERATURES FALL LATER
TONIGHT...AND PRECIPITATION SWITCHES BACK TO ALL LIGHT SNOW AND
REMAIN SNOW THROUGH TUESDAY MORNING.

* ACCUMULATIONS...ADDITIONAL SNOW ACCUMULATION OF ONE TO TWO
INCHES CAN BE EXPECTED ACROSS THE FAR NORTHERN TIER OF THE
ADVISORY AREA. LIGHT ICE ACCUMULATIONS CAN ALSO BE EXPECTED ON
AREA SIDEWALKS...PARKING LOTS...AND UNTREATED SIDE ROADS.

* HAZARDS...LIGHT ACCUMULATIONS OF SNOW AND ICE WILL RESULT IN
UNTREATED ROADWAYS BECOMING SLICK MAKING TRAVEL HAZARDOUS.

* IMPACTS...SNOW COVERED ROADS AND REDUCED VISIBILITIES WILL
IMPACT TRAVEL ACROSS THE AREA TODAY AND TONIGHT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW
WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW
COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

Special Weather Statement

...HAZARDOUS TRAVEL CONDITIONS TO PERSIST ACROSS FAR NORTHEAST
ILLINOIS AND NORTHWEST INDIANA...

LIGHT RAIN CONTINUES TO FALL ACROSS LOCATIONS IN NORTHEAST
ILLINOIS AND NORTHWEST INDIANA EARLY THIS EVENING...AND EXPECT
THIS RAIN TO PERSIST OVER THE NEXT SEVERAL HOURS BEFORE IT BEGINS
TO SLOWLY TRANSITION OVER TO LIGHT SNOW. ALTHOUGH MOST SURFACE
OBSERVATIONS OVER THE AREA ARE REPORTING SURFACE TEMPERATURES
ABOVE FREEZING AT THIS TIME...THERE ARE STILL LOCALIZED AREAS
WHICH ARE AT OR JUST BELOW FREEZING. ALSO DESPITE A GOOD STREAM OF
WARMER AIR MAKING ITS WAY NORTH TODAY...MOST SURFACES STILL REMAIN
BELOW FREEZING. THIS IS PROVIDING A THIN GLAZE OF ICE TO DEVELOP
ON AREA SIDEWALKS...PARKING LOTS...AS WELL AS SOME SIDE ROADS.
THESE SLICK CONDITIONS COULD PERSIST INTO THE LATTER PART OF THE
EVENING BEFORE THE RAIN BEGINS TO TRANSITION OVER TO ALL LIGHT
SNOW. EVEN THEN...SOME SLICK CONDITIONS COULD REMAIN WELL INTO
EARLY TUESDAY MORNING. PERSONS TRAVELING ACROSS THE AREA SHOULD
USE CAUTION WITH THESE HAZARDOUS CONDITIONS IN PLACE.

.NOW...
LIGHT MIXED PRECIPITATION IS CAUSING ICING ON UNTREATED SURFACES
SUCH AS SIDEWALKS AND PARKING LOTS...WHICH ARE STILL BELOW
FREEZING AT THE SURFACE. AREAS NORTH OF INTERSTATE 55 SHOULD
CHANGE BACK TO SNOW BY 10 PM. LIGHT TO MODERATE SNOW WILL CAUSE
ROADS TO QUICKLY BECOME COVERED IN SNOW AND TRAVELING CONDITIONS
WILL BE TREACHEROUS. DRIVERS SHOULD EXERCISE CAUTION WHILE DRIVING
THIS EVENING.

.NOW...
A MIX OF SNOW...SLEET...FREEZING RAIN...AND RAIN WILL CONTINUE
ACROSS THE AREA. THE PRECIPITATION WILL REMAIN MOSTLY SNOW IN
COUNTIES BORDERING THE WISCONSIN BORDER WITH MIXED PRECIPITATION
ACROSS THE REST OF THE AREA. SOUTH OF INTERSTATE 80 THE
PRECIPITATION WILL BE ALL RAIN THIS EVENING. PERSONS TRAVELING IN
THESE AREAS SHOULD EXERCISE CAUTION ON THE ROADS.

Outlook

.DAY ONE...TONIGHT.

A WINTRY MIX OF SLEET...SNOW...AND FREEZING RAIN IS EXPECTED
TONIGHT...ESPECIALLY NORTH OF INTERSTATES 88 AND 290. SOME ICE OR
SNOW MAY ACCUMULATE ON UNTREATED ROADWAYS WHERE TEMPERATURES ARE
BELOW FREEZING.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY.

LAKE EFFECT SNOW SHOWERS ARE POSSIBLE IN NORTHWEST INDIANA EAST OF
GARY TUESDAY NIGHT INTO WEDNESDAY.

ACCUMULATING SNOW IS POSSIBLE OVER PORTIONS OF THE AREA WEDNESDAY
NIGHT INTO THURSDAY.

.

.NOW...
LIGHT TO MODERATE SNOW IS FALLING ACROSS THE AREA...BUT WILL
CHANGE TO A MIX OF FREEZING RAIN...SLEET...AND SNOW DURING THE
LATE AFTERNOON. DRIVERS SHOULD EXERCISE CAUTION ON THE ROADS THIS AFTERNOON.

NOW

LIGHT TO MODERATE SNOW IS FALLING ACROSS THE AREA WITH
VISIBILITIES AROUND A HALF A MILE OR LESS IN THE HEAVIER SNOW.
LIGHT TO MODERATE SNOW WILL CONTINUE TO FALL THROUGH THE
AFTERNOON WITH SNOWFALL ACCUMULATIONS 1 TO 3 INCHES THIS
AFTERNOON.

DURING THE LATE AFTERNOON AND EARLY EVENING SLEET AND FREEZING
RAIN WILL BEGIN TO MIX WITH THE SNOW...ESPECIALLY SOUTH OF
INTERSTATE 88. PERSONS TRAVELING SHOULD EXERCISE CAUTION ON THE
ROADS THIS AFTERNOON AND EVENING.

AFFECTED COUNTIES:
IN ILLINOIS: DEKALB, KANE, KENDALL, LA SALLE, LEE.


...WINTER WEATHER ADVISORY IN EFFECT UNTIL 6 AM CST TUESDAY...

THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A WINTER
WEATHER ADVISORY FOR A MIX OF SNOW...SLEET...AND FREEZING
RAIN...WHICH IS IN EFFECT UNTIL 6 AM CST TUESDAY.

* TIMING...SNOW...WILL MIX WITH AND CHANGE TO FREEZING RAIN AND
SLEET FOR A TIME THIS AFTERNOON. TEMPERATURES WILL LIKELY RISE
ABOVE FREEZING LATE THIS AFTERNOON WITH PRECIPITATION CHANGING
TO ALL RAIN.

* ACCUMULATIONS...SNOW ACCUMULATION IS GENERALLY EXPECTED TO BE AN
INCH OR LESS. A PERIOD OF FREEZING RAIN AND SLEET IS LIKELY TO
RESULT IN SOME LIGHT ICE ACCUMULATIONS.

* HAZARDS...LIGHT ACCUMULATIONS OF SNOW AND ICE WILL RESULT IN
UNTREATED ROADWAYS BECOME SLICK AND TRAVEL HAZARDOUS.

* IMPACTS...SNOW COVERED ROADS AND REDUCED VISIBILITIES WILL
IMPACT TRAVEL ACROSS THE AREA TODAY AND TONIGHT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW
WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW
COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

NOW

AREAS OF LIGHT TO MODERATE SNOWFALL CONTINUE ACROSS PORTIONS OF
NORTHERN ILLINOIS LATE THIS MORNING. VISIBILITY IN THE HEAVIER
BANDS OF SNOW CAN BE REDUCED TO AROUND A HALF MILE OR LESS AT
TIMES. SNOW ACCUMULATIONS THROUGH EARLY AFTERNOON ARE EXPECTED TO
BE AROUND 1 TO 2 INCHES NORTH OF THE INTERSTATE 88...INTERSTATE
290 CORRIDOR WITH LESSER AMOUNTS TO THE SOUTH. THE HIGHEST
ACCUMULATIONS WILL BE ALONG THE ILLINOIS AND WISCONSIN BORDER.

SNOW WILL BEGIN TO CHANGE TO FREEZING RAIN AND SLEET OVER THE
NEXT COUPLE HOURS...MAINLY BETWEEN I-80 AND I-88 WEST OF THE
CHICAGO METRO AREA. LIGHT ICE ACCUMULATION IS POSSIBLE WHICH WILL
LEAD TO HAZARDOUS ROAD CONDITIONS.

NOW

AREAS OF LIGHT TO MODERATE SNOWFALL ARE CURRENTLY MOVING ACROSS
NORTHERN ILLINOIS AND NORTHWEST INDIANA. VISIBILITIES CAN BE
REDUCED TO AROUND A HALF MILE OR LESS AT TIMES IN THE HEAVIEST
SNOW. SNOW ACCUMULATION OF UP TO 1 AN INCH IS POSSIBLE THROUGH
NOON SOUTH OF INTERSTATE-80 AND 1 TO 2 INCHES NORTH OF
INTERSTATE-80...WITH HIGHEST SNOW TOTALS EXPECTED ALONG THE
ILLINOIS AND WISCONSIN BORDER.

Outlook

DAY ONE...TODAY AND TONIGHT.

...FOR AREAS SOUTH OF THE INTERSTATE 80 CORRIDOR...

SNOW WILL OVERSPREAD THE AREA FROM WEST TO EAST THIS MORNING. THE
SNOW IS LIKELY TO MIX WITH FREEZING RAIN AND SLEET THIS MORNING
BEFORE CHANGING TO RAIN THIS AFTERNOON.

...FOR AREAS FROM DIXON TO DE KALB TO HIGHLAND PARK AND SOUTH TO
THE INTERSTATE 80 CORRIDOR...

SNOW WILL DEVELOP THIS MORNING BEFORE MIXING WITH SLEET THIS
AFTERNOON. IT APPEARS THE PRECIPITATION MAY CHANGE OVER TO RAIN BY
MID TO LATE AFTERNOON AS WARMER TEMPERATES MOVE ACROSS THE AREA.
LIGHT SNOW ACCUMULATIONS ARE POSSIBLE THIS MORNING.

...FOR THE EXTREME NORTHERN COUNTIES OF ILLINOIS...INCLUDING
LAKE...MCHENRY... BOONE...WINNEBAGO...AND OGLE...

EXPECT SNOW TO DEVELOP THIS EARLY THIS MORNING. SNOW WILL CONTINUE
THROUGH MUCH OF THE DAY. THERE MAY BE A BRIEF BREAK IN THE SNOW
LATE THIS AFTERNOON BEFORE A SECOND WAVE OF LIGHT SNOW DEVELOPS
LATE THIS AFTERNOON AND EVENING. SOME SLEET MAY MIX IN WITH THE
SNOW LATE THIS AFTERNOON. HOWEVER...SNOW WILL BE THE PRIMARY
PRECIPITATION TYPE. THE SNOW WILL TAPPER OFF LATER TONIGHT. TOTAL
SNOW ACCUMULATIONS OF 3 TO 5 INCHES ARE EXPECTED.


.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY.

MUCH COLDER AIR WILL MOVE ACROSS THE AREA FOR WEDNESDAY THROUGH
FRIDAY. HIGH TEMPERATURES WILL STRUGGLE TO GET INTO THE MID TO
UPPER TEENS. OVERNIGHT LOWS WILL LIKELY DROP BELOW ZERO AWAY FROM
CHICAGO ACROSS NORTH CENTRAL ILLINOIS...AND INTO THE SINGLE DIGITS
ABOVE ZERO ELSEWHERE.

Please Note Only For The Counties Listed Below:


AFFECTED COUNTIES:
IN ILLINOIS: BOONE, LAKE, MCHENRY, OGLE, WINNEBAGO.



..WINTER WEATHER ADVISORY IN EFFECT UNTIL 6 AM CST TUESDAY...

THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A WINTER
WEATHER ADVISORY FOR SNOW...WHICH IS IN EFFECT
UNTIL 6 AM CST TUESDAY.

* TIMING...SNOW WILL DEVELOP BY MID MORNING TODAY AND CONTINUE
INTO THE AFTERNOON TODAY. A SECOND WAVE OF LIGHT SNOW WILL LIKELY
DEVELOP THIS EVENING BEFORE ABATING BY EARLY TUESDAY MORNING.

* ACCUMULATIONS...THREE TO FIVE INCHES ARE EXPECTED BY EARLY
TUESDAY MORNING.

* HAZARDS...SNOW WILL REDUCE THE VISIBILITIES TO A MILE AT TIMES
AND LEAD TO HAZARDOUS TRAVEL CONDITIONS.

* IMPACTS...SNOW COVERED ROADS AND REDUCED VISIBILITIES WILL
IMPACT TRAVEL ACROSS THE AREA TODAY AND TONIGHT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW
WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW
COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.




KJB

WINNEBAGO-BOONE-MCHENRY-LAKE IL-OGLE-
INCLUDING THE CITIES OF...ROCKFORD...BELVIDERE...WOODSTOCK...
WAUKEGAN...OREGON

So where did that unpredicted snow come from during the Bears game?   The link below gives a technical (scientific) video of how and where the snow came from.  This is courtesy of Gino Izzi from the Chicagoland National Weather Service

http://www.crh.noaa.gov/lot/?n=anybriefing



--
Gregg Dubin
wxfan1978@gmail.com

...HAZARDOUS TRAVEL CONDITIONS POSSIBLE MONDAY INTO MONDAY
EVENING...

SNOW IS EXPECTED TO DEVELOP MONDAY MORNING OVER NORTH CENTRAL
ILLINOIS GRADUALLY SPREADING EAST ACROSS THE REMAINDER OF NORTHERN
ILLINOIS MONDAY AFTERNOON. STRONG SOUTH WINDS WILL BE USHERING IN
PROGRESSIVELY MILDER AIR...WHICH WILL PROBABLY CAUSE THE SNOW TO
RAIN MONDAY EVENING. THERE IS A DISTINCT POSSIBILITY OF A PERIOD
OF FREEZING RAIN OR SLEET MONDAY AFTERNOON INTO EARLY MONDAY
EVENING AS THE PRECIPITATION TRANSITIONS TO RAIN. WITH
TEMPERATURES EXPECTED TO HOVER RIGHT AROUND THEN JUST BARELY ABOVE
FREEZING WHEN THE PRECIPITATION IS FALLING IT IS VERY TRICKY TO
DETERMINE ACCURATELY EXACTLY WHAT TYPE OF PRECIPITATION WILL OCCUR
THIS FAR IN ADVANCE.

CURRENT INDICATIONS ARE THAT THE GREATEST RISK FOR ACCUMULATING
SNOW...POSSIBLY A FEW INCHES...WILL BE OVER NORTH CENTRAL ILLINOIS
EAST INTO THE NORTHERN SUBURBS OF CHICAGO...WITH LESSER AMOUNTS
FARTHER SOUTH. THERE COULD BE SOME MINOR ICE ACCUMULATIONS IN SOME
AREAS AS WELL.

PERSONS PLANNING TRAVEL ACROSS THE REGION MONDAY INTO MONDAY NIGHT
SHOULD CLOSELY MONITOR LATER FORECASTS.

Special Weather Statement

...HAZARDOUS TRAVEL CONDITIONS POSSIBLE MONDAY INTO MONDAY
EVENING...

SNOW IS EXPECTED TO DEVELOP MONDAY MORNING OVER NORTH CENTRAL
ILLINOIS GRADUALLY SPREADING EAST ACROSS THE REMAINDER OF NORTHERN
ILLINOIS MONDAY AFTERNOON. STRONG SOUTH WINDS WILL BE USHERING IN
PROGRESSIVELY MILDER AIR...WHICH WILL PROBABLY CAUSE THE SNOW TO
RAIN MONDAY EVENING. THERE IS A DISTINCT POSSIBILITY OF A PERIOD
OF FREEZING RAIN OR SLEET MONDAY AFTERNOON INTO EARLY MONDAY
EVENING AS THE PRECIPITATION TRANSITIONS TO RAIN. WITH
TEMPERATURES EXPECTED TO HOVER RIGHT AROUND THEN JUST BARELY ABOVE
FREEZING WHEN THE PRECIPITATION IS FALLING IT IS VERY TRICKY TO
DETERMINE ACCURATELY EXACTLY WHAT TYPE OF PRECIPITATION WILL OCCUR
THIS FAR IN ADVANCE.

CURRENT INDICATIONS ARE THAT THE GREATEST RISK FOR ACCUMULATING
SNOW...POSSIBLY A FEW INCHES...WILL BE OVER NORTH CENTRAL ILLINOIS
EAST INTO THE NORTHERN SUBURBS OF CHICAGO...WITH LESSER AMOUNTS
FARTHER SOUTH. THERE COULD BE SOME MINOR ICE ACCUMULATIONS IN SOME
AREAS AS WELL.

PERSONS PLANNING TRAVEL ACROSS THE REGION MONDAY INTO MONDAY NIGHT
SHOULD CLOSELY MONITOR LATER FORECASTS.

Outlook

*** Notice: The Brutally Cold Air that was supposed to hit us late this up-coming week, was removed from the outlook. Apparently the Cold Air will take a more Northerly and Eastern Track. Temps will still be somewhat below average, but we should not see the brutually cold air. (As of now). See outlook below regarding tomorrow.

.DAY ONE...TONIGHT.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY.

SNOW WILL OVERSPREAD THE AREA FROM WEST TO EAST MONDAY. SNOW MAY
MIX WITH OR CHANGE TO SLEET OR FREEZING RAIN FOR A TIME MONDAY
AFTERNOON...BEFORE POSSIBLY CHANGING TO ALL RAIN OVER MUCH OF THE
AREA LATE MONDAY AFTERNOON OR MONDAY NIGHT AS TEMPERATURES RISE
JUST ABOVE FREEZING. ACCUMULATIONS OF SNOW AND OR ICE MAY RESULT
IN HAZARDOUS TRAVEL CONDITIONS IN SOME AREAS...ESPECIALLY DURING
THE DAY MONDAY.

NOW...

LIGHT LAKE EFFECT SNOW SHOWERS AND FLURRIES CONTINUE FROM LAKE
COUNTY ILLINOIS...SOUTH TO COOK COUNTY...TO EASTERN WILL...TO
LAKE COUNTY INDIANA...AND NORTHERN PORTER COUNTY INDIANA. THIS
LAKE EFFECT SNOW WILL AFFECT AREAS ADJACENT TO AND IN THE
VICINITY OF LAKE MICHIGAN FOR THE NEXT COUPLE OF HOURS.
ACCUMULATIONS WILL BE LESS THAN AN INCH. PERSONS TRAVELING ACROSS
THESE AREAS SHOULD BE PREPARED TO ENCOUNTER SOME LIGHT SNOW THIS
AFTERNOON.

Special Weather Statement

..LAKE EFFECT SNOW SHOWERS OVER COOK COUNTY...

AT 1155 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
BAND OF SNOW SHOWERS LIFTING NORTHWARD ACROSS COOK COUNTY. THE SNOW
SHOWERS EXTEND FROM NEAR PALOS PARK TO AROUND HYDE PARK AND ARE
MOVING NORTH AT 10 MPH. THROUGH 100 PM THE SNOW SHOWERS WILL
AFFECT AREAS ALONG AND NEAR THE STEVENSON AND EISENHOWER
EXPRESSWAYS...AS WELL AS THE CHICAGO LOOP.

SNOW SHOWERS COULD BRIEFLY BE RATHER HEAVY RESULTING IN REDUCED
VISIBILITIES AND SOME ACCUMULATIONS ON UNTREATED ROADWAYS.

NOW

LIGHT LAKE EFFECT SNOW SHOWERS AND FLURRIES HAVE DEVELOPED OVER
SOUTHERN COOK...EASTERN WILL...AND NORTHERN LAKE COUNTY INDIANA.
THIS LAKE EFFECT SNOW WILL DRIFT NORTH OVER THE NEXT COUPLE HOURS
AND COULD BRIEFLY SNOW HARD ENOUGH TO LEAVE A LIGHT COATING OF
SNOW. PERSONS TRAVELING ACROSS THE SOUTHERN SUBURBS...MAINLY EAST
OF INTERSTATE 57...SHOULD BE PREPARED TO ENCOUNTER SOME LIGHT SNOW
THIS MORNING.

Outlook

.DAY ONE...TODAY AND TONIGHT.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY.

SNOW IS EXPECTED TO MOVE INTO THE AREA SOMETIME MONDAY MORNING
THEN MIX WITH OR CHANGE TO SLEET AND FREEZING RAIN LATE MONDAY
AFTERNOON OR EARLY MONDAY EVENING...ESPECIALLY SOUTH OF
INTERSTATE 88. SEVERAL INCHES OF SNOW ARE POSSIBLE PRIOR TO THE
MIXED PRECIPITATION...ESPECIALLY NORTH OF INTERSTATE 80. MINOR ICE
ACCUMULATIONS ARE POSSIBLE MONDAY EVENING AND MONDAY NIGHT WHERE
FREEZING RAIN AND SLEET OCCUR.

DANGEROUSLY COLD CONDITIONS ARE POSSIBLE LATE IN THE WEEK...WITH
WIND CHILLS COLDER THAN 20 BELOW ZERO POSSIBLE IN SOME AREAS.

LOCALIZED ICE JAM FLOODING IS POSSIBLE...ESPECIALLY LATER THIS
WEEK.

Interesting Week Ahead

As we approach the later part of Janaury, we start approaching the coldest time of the year.  Statisically the period of Jan 20 - Feb 5 is the coldest part of the winter.

This will be an interesting week ahead.  Models are indicating potentially for the coldest outbreak here in since 2009.  We *COULD* see temps sometime late next week with negative double digits (as actual high temps), with a wind, producing -30/ -40F degree windchills.   Needless to say, this can change, but it is something worth noting.

In addition to the brutal cold temps, we could see snow or a at least a cocktail mix on Monday.  It depends on how the storm tracks.  As it stand now, we may see a mixture of Snow, Sleet, or rain on Monday.  Finer details should be out sometime later tomorrow, but plan on Monday being a sloppy day.

Weds into Thursday, potentially another accumulating snow event in and or near our area as a clipper system approaches our area from Canada.  It should not be a significant snow event, but accumulating snow none-the-less.

Then the cold outbreak over the weekend next week.   

Stay Tuned! 

Outlook

.DAY ONE...TONIGHT.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY.

LIGHT SNOW...SLEET...AND OR FREEZING RAIN COULD RESULT IN SOME
MINOR ACCUMULATION MONDAY INTO MONDAY NIGHT...ESPECIALLY NORTH OF
INTERSTATE 80.

DANGEROUSLY COLD CONDITIONS ARE POSSIBLE LATE IN THE WEEK...WITH
WIND CHILLS COLDER THAN 20 BELOW ZERO POSSIBLE IN SOME AREAS.

LOCALIZED ICE JAM FLOODING IS POSSIBLE...ESPECIALLY LATER THIS
WEEK.

ORD - Weather - Saturday Jan 15

SNOW IS LIKELY MONDAY AND MONDAY NIGHT. SEVERAL INCHES OF
ACCUMULATION MAY OCCUR. THERE IS ALSO A CHANCE THAT A MIX OF
PRECIPITATION COULD FALL BUT IT IS TOO EARLY TO DETERMINE HOW
GREAT THIS CHANCE IS.

 
 
Today: Scattered flurries. Mostly cloudy, with a high near 25. Northwest wind between 10 and 15 mph, with gusts as high as 20 mph.

Tonight: Mostly cloudy, with a low around 11. Wind chill values as low as zero. North northwest wind between 5 and 10 mph, with gusts as high as 15 mph.

Sunday: Mostly cloudy, with a high near 20. Wind chill values as low as zero. North northwest wind around 5 mph becoming calm.

Sunday Night: A 20 percent chance of snow. Cloudy, with a low around 17. Calm wind becoming south between 5 and 10 mph. Winds could gust as high as 15 mph.

M.L.King Day: Snow likely. Cloudy, with a high near 30. South wind between 10 and 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%.

Monday Night: A 50 percent chance of snow. Cloudy, with a low around 22.

.DAY ONE...TONIGHT.

LIGHT SNOW RANGING FROM A DUSTING SOUTH TO APPROACHING 2 INCHES
FAR NORTH WILL LEAD TO SLICK CONDITIONS ON UNTREATED ROADS.

LOCALIZED ICE JAM FLOODING IS POSSIBLE ON AREA RIVERS.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY.

SNOW IS LIKELY MONDAY. ACCUMULATIONS MAY RANGE FROM A COUPLE
INCHES TO SEVERAL INCHES.

THERE WILL BE A CHANCE OF LIGHT SNOW WEDNESDAY NIGHT.

LOCALIZED ICE JAM FLOODING IS POSSIBLE ON AREA RIVERS.

Outlook

DAY ONE...TODAY AND TONIGHT.

LIGHT SNOW IS EXPECTED TO FALL ACROSS MUCH OF THE AREA THIS
EVENING AND TONIGHT. LIGHT ACCUMULATION IS EXPECTED...MAINLY NORTH
OF INTERSTATE 80. AMOUNTS ARE EXPECTED TO RANGE FROM A DUSTING TO A
FEW TENTHS OF AN INCH NEAR INTERSTATE 80 TO AROUND AN INCH NEAR
THE WISCONSIN STATE LINE. SLICK SPOTS MAY DEVELOP ON UNTREATED
SURFACES.

.SATURDAY THROUGH THURSDAY.

THERE IS A CHANCE OF LIGHT SNOW SUNDAY. LIGHT ACCUMULATIONS ARE
POSSIBLE. THERE WILL BE ANOTHER CHANCE FOR ACCUMULATING SNOW MONDAY
AND MONDAY NIGHT.

If you thought you saw it all... Check this out!

A winter storm warning for the island of Hawaii!!!

HEAVY SNOW SHOWERS WILL SPREAD TOWARD THE ISLAND..AND MAY DROP
UP TO SEVERAL INCHES OF SNOW IS A SHORT PERIOD OF TIME. NEW
 SNOWFALL AMOUNTS OF UP TO 6 INCHES ARE POSSIBLE TODAY.
. STRONG SOUTHWEST WINDS GUSTING TO NEAR 50 MPH WILL RESULT IN
SIGNIFICANT BLOWING AND DRIFTING SNOW AT THE SUMMITS. HEAVIER SNOW
SHOWERS COULD BE ACCOMPANIED BY WHITEOUT CONDITIONS AND POSSIBLY
 CLOUD TO GROUND LIGHTNING.

--
Gregg Dubin
wxfan1978@gmail.com

..TONIGHT.

A PERIOD OF LIGHT SNOW WILL FALL DURING THE LATE AFTERNOON AND
THIS EVENING. ACCUMULATIONS WILL BE LIGHT BUT UNTREATED ROADS MAY
BECOME SLICK.

....FRIDAY THROUGH WEDNESDAY.

THERE IS A CHANCE OF LIGHT SNOW SUNDAY. ACCUMULATIONS OF A FEW
INCHES ARE POSSIBLE. THERE WILL BE ANOTHER CHANCE OF ACCUMULATING
SNOW MAINLY DURING THE DAY MONDAY AND INTO MONDAY NIGHT.

Want to be a trained storm spotter?  See the link below for a list of all the up-coming training classes.

http://www.crh.noaa.gov/lot/?n=spotter_talks

...MORNING SNOWFALL ROUNDUP...

THE FOLLOWING ARE SNOW AMOUNTS FOR THE PREVIOUS 24-HOURS FROM AN
ASSORTMENT OF COOP AND COCORAHS OBSERVERS.
OBSERVATIONS ARE USUALLY TAKEN AT 7 AM.
NOTE THAT MANY LOCATIONS HAD ALREADY RECEIVED SNOW PRIOR TO
OBSERVATION TIME TUESDAY MORNING...SO THIS IS NOT A STORM TOTAL
REPORT.

24-HOUR SNOWFALL AMOUNTS FOR WEDNESDAY(01/12/11)...


NORTHERN ILLINOIS                              SNOW
LOCATION (COUNTY):                           FALL(INCHES)

OHARE (COOK)..................................5.6
RIVERWOODS (LAKE).............................5.3
WESTMONT 1SSE (DU PAGE).......................4.8
BEACH PARK 1W (LAKE)..........................4.6
GURNEE 2NE (LAKE).............................4.5
WAUKEGAN 2N (LAKE)............................4.5
LINCOLNWOOD 2E (COOK).........................4.4
LA GRANGE PARK 1SSW (COOK)....................4.3
EVANSTON 1N (COOK)............................4.2
OAK PARK 1NNE (COOK)..........................4.2
LANSING (COOK)................................4.2
MIDWAY 3SW (COOK).............................4.2
LINCOLNSHIRE 1.3WSW (LAKE)....................4.1
CHICAGO 6ESE (COOK)...........................3.8
CRETE 3E (WILL)...............................3.8
OAK PARK 2S (COOK)............................3.7
HOMEWOOD (COOK)...............................3.6
MONEE (WILL)..................................3.6
GENOA (DE KALB)...............................3.4
BURR RIDGE 2SW (DU PAGE)......................3.4
LAKE VILLA 1SSW (LAKE)........................3.4
BUFFALO GROVE 2N (LAKE).......................3.4
DOWNERS GROVE 2SE (DU PAGE)...................3.3
GLEN ELLYN (DU PAGE)..........................3.1
NEWARK (KENDALL)..............................3.1
OAK BROOK (DU PAGE)...........................3.1
COUNTRYSIDE 1ENE (COOK).......................3.0
LINCOLNSHIRE 1N (LAKE)........................3.0
LAKE BLUFF 1W (LAKE)..........................3.0
VOLO 1S (LAKE)................................3.0
NEW LENOX 2SE (WILL)..........................3.0
JOLIET LOCK/DAM (WILL)........................3.0
PONTIAC (LIVINGSTON)..........................3.0
SHABBONA (DE KALB)............................3.0
LA GRANGE (COOK)..............................2.9
MUNDELEIN (LAKE)..............................2.9
BOTANIC GARDENS (COOK)........................2.8
LISLE 1SE (DU PAGE)...........................2.8
SPRING GROVE 2N (MCHENRY).....................2.8
WATSEKA (IROQUOIS)............................2.8
EVERGREEN PARK (COOK).........................2.7
CHICAGO RIDGE (COOK)..........................2.7
ROMEOVILLE (WILL).............................2.7
ST ANNE (KANKAKEE)............................2.7
PEOTONE (WILL)................................2.6
JOLIET 2N (WILL)..............................2.6
JOLIET (WILL).................................2.6
PEOTONE (WILL)................................2.6
HEBRON (MCHENRY)..............................2.5
GLEN ELLYN 2SSE (DU PAGE).....................2.5
HAWTHORN WOODS 1N (LAKE)......................2.5
LAKEMOOR 2SE (LAKE)...........................2.5
PLANO (KENDALL)...............................2.5
ELK GROVE VILLAGE 1ESE (COOK).................2.4
ALGONQUIN 1N (MCHENRY)........................2.4
HOMER GLEN 1ENE (WILL)........................2.4
HOMER GLEN 4WNW (WILL)........................2.4
KANKAKEE (KANKAKEE)...........................2.4
ELGIN (KANE)..................................2.3
WORTH (COOK)..................................2.3
ST. CHARLES (KANE)............................2.3
MANHATTAN 5ENE (WILL).........................2.3
MILFORD (IROQUOIS)............................2.3
ST CHARLES (KANE).............................2.3
YORKVILLE 2SE (KENDALL).......................2.3
BOURBONNAIS (KANKAKEE)........................2.2
LAKE ZURICH (LAKE)............................2.2
PLAINFIELD (WILL).............................2.2
WINFIELD (DU PAGE)............................2.2
COAL CITY 4NNW (GRUNDY).......................2.1
PALATINE 1E (COOK)............................2.1
BARRINGTON (LAKE).............................2.0
DRESDEN LOCK/DAM (GRUNDY).....................2.0
DWIGHT (LIVINGSTON)...........................2.0
ELBURN (KANE).................................2.0
HERSCHER (KANKAKEE)...........................2.0
HARVARD (MCHENRY).............................2.0
LISLE (DU PAGE)...............................2.0
ROSELLE 1ESE (DU PAGE)........................2.0
MINOOKA (GRUNDY)..............................2.0
CARY 2NE (MCHENRY)............................2.0
WONDER LAKE 1WNW (MCHENRY)....................2.0
MCHENRY (MCHENRY).............................2.0
PARK FOREST (COOK)............................2.0
ST. CHARLES 6NW (KANE)........................1.9
ELK GROVE VILLAGE 2WSW (COOK).................1.8
ELBURN 3NNE (KANE)............................1.8
OTTAWA 1NW (LA SALLE).........................1.8
STREAMWOOD (COOK).............................1.8
WAUCONDA (LAKE)...............................1.8
ORLAND HILLS 1S (COOK)........................1.7
BATAVIA (KANE)................................1.6
AURORA 4SE (DU PAGE)..........................1.6
YORKVILLE 1W (KENDALL)........................1.6
OSWEGO 5SSE (KENDALL).........................1.6
BATAVIA 1WNW (KANE)...........................1.6
DIXON 3NNW (LEE)..............................1.6
ST CHARLES 7NW (KANE).........................1.6
ANTIOCH (LAKE)................................1.5
BELVIDERE (BOONE).............................1.5
WATSEKA 5W (IROQUOIS).........................1.5
MONTGOMERY 1SSE (KENDALL).....................1.5
NORTH AURORA 2NE (KANE).......................1.5
MARSEILLES 6WNW (LA SALLE)....................1.5
HUNTLEY 4W (MCHENRY)..........................1.5
MORRIS (GRUNDY)...............................1.5
ROCKFORD (WINNEBAGO)..........................1.5
WOODSTOCK 5NW (MCHENRY).......................1.5
ELGIN (KANE)..................................1.4
HOFFMAN ESTATES 5W (COOK).....................1.4
ELGIN 1S (KANE)...............................1.4
GENEVA 2WSW (KANE)............................1.4
ROCKFORD 1NW (WINNEBAGO)......................1.4
NAPERVILLE 1NW (DU PAGE)......................1.3
COAL CITY (GRUNDY)............................1.3
GENEVA 1SSW (KANE)............................1.3
BULL VALLEY 2WNW (MCHENRY)....................1.3
DE KALB (DE KALB).............................1.2
YORKVILLE 1NE (KENDALL).......................1.2
GENEVA 2ENE (KANE)............................1.2
SUGAR GROVE 1NE (KANE)........................1.2
AMBOY (LEE)...................................1.2
ROCKFORD 3NE (WINNEBAGO)......................1.2
CORTLAND (DE KALB)............................1.1
ROCKTON 1ESE (WINNEBAGO)......................1.1
MARENGO (MCHENRY).............................1.1
MARSEILLES (LA SALLE).........................1.1
CHATSWORTH (LIVINGSTON).......................1.0
DE KALB (DE KALB).............................1.0
EARLVILLE 3S (LA SALLE).......................1.0
ASHTON (LEE)..................................1.0
MENDOTA 1N (LA SALLE).........................1.0
LA SALLE (LA SALLE)...........................1.0
SENECA 1NE (LA SALLE).........................1.0
CHATSWORTH (LIVINGSTON).......................1.0
BYRON 3N (OGLE)...............................1.0
MACHESNEY PARK 3ENE (WINNEBAGO)...............1.0
OREGON (OGLE).................................1.0
OTTAWA (LA SALLE).............................1.0
PERU (LA SALLE)...............................1.0
PAXTON (FORD).................................1.0
ROCKFORD 4NW (WINNEBAGO)......................1.0
STREATOR (LIVINGSTON).........................1.0
SHERIDAN (LA SALLE)...........................0.9
SHERIDAN 3SSE (LA SALLE)......................0.9
MENDOTA (LA SALLE)............................0.9
SENECA 2SSW (LA SALLE)........................0.8
ROSCOE 2ESE (WINNEBAGO).......................0.8
ROSCOE 2SE (WINNEBAGO)........................0.8
ARLINGTON HEIGHTS 1SW (COOK)..................0.7
STEWARD (LEE).................................0.5
OTTAWA 2N (LA SALLE)..........................0.3
ROCHELLE (OGLE)...............................0.3

NORTHWEST INDIANA                              SNOW
LOCATION (COUNTY):                           FALL(INCHES)

VALPARAISO 1ENE (PORTER)......................9.5
VALPARAISO 1NNW (PORTER)......................9.5
VALPARAISO 3WSW (PORTER)......................8.5
PORTAGE 1ESE (PORTER).........................8.2
CHESTERTON 4E (PORTER)........................8.0
VALPARAISO 5NNE (PORTER)......................7.9
VALPARAISO 5NNE (PORTER)......................7.9
VALPARAISO 2NW (PORTER).......................7.3
VALPARAISO 2N (PORTER)........................7.2
VALPARAISO 1SE (PORTER).......................7.0
VALPARAISO 5WSW (PORTER)......................6.7
HEBRON 4NE (PORTER)...........................6.5
LAKES OF THE FOUR SEASONS 2NNE (PORTER).......6.4
PORTER 1S (PORTER)............................6.2
VALPARAISO 6WSW (PORTER)......................6.0
HOBART 2E (LAKE)..............................5.5
MOROCCO (NEWTON)..............................5.0
INDIANA DUNES (PORTER)........................4.9
CROWN POINT 2WSW (LAKE).......................4.5
VALPARAISO 4SW (PORTER).......................4.2
DE MOTTE 1NNW (JASPER)........................4.1
SCHERERVILLE 2WSW (LAKE)......................4.0
DYER 1WNW (LAKE)..............................3.6
DE MOTTE 6S (JASPER)..........................3.5
CROWN POINT 1N (LAKE).........................3.5
WHEATFIELD 3S (JASPER)........................3.0
REMINGTON (JASPER)............................2.9
HAMMOND 3SW (LAKE)............................2.8
RENSSELAER (JASPER)...........................2.6
KENTLAND 1NNW (NEWTON)........................2.0
BROOK 4W (NEWTON).............................2.0

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Outlook

LAKE EFFECT SNOW WILL BEGIN TO DIMINISH ACROSS EXTREME NORTHWEST
INDIANA BY THIS AFTERNOON. HOWEVER...SEVERAL ADDITIONAL INCHES OF
ACCUMULATION ARE POSSIBLE...ESPECIALLY OVER NORTHEAST PORTER
COUNTY THIS MORNING.

TRAVEL WILL REMAIN HAZARDOUS ACROSS NORTHWEST INDIANA TODAY.


ACCUMULATING SNOW IS POSSIBLE AGAIN FRIDAY NIGHT.

LIGHT SNOW WILL CONTINUE THROUGH 1100 PM...GRADUALLY DIMINISHING
IN INTENSITY. LOWEST VISIBILITIES WILL RANGE FROM NEAR 2 TO 4
MILES.

LIGHT SNOW WILL CONTINUE THROUGH 900 PM...GRADUALLY DIMINISHING
IN INTENSITY. VISIBILITIES WILL RANGE FROM NEAR 2 TO 4 MILES.

...EVENING RUSH HOUR SLOWED BY SNOW...

A PERIOD OF MODERATE TO OCCASIONALLY HEAVY LAKE ENHANCED SNOW WILL
AFFECT THE EVENING RUSH ACROSS THE CHICAGO METRO AREA.

AT 345 PM CST...RADAR INDICATED HEAVIER SNOW SHOWERS OCCURRING
ACROSS EASTERN LAKE...COOK AND WILL COUNTIES...GENERALLY EAST OF
THE INTERSTATE 355 CORRIDOR. THESE HEAVIER SNOW SHOWERS WILL
REDUCE VISIBILITIES TO LESS THAN A MILE AT TIMES...AND MAY PRODUCE
A QUICK ADDITIONAL INCH OR TWO OF ACCUMULATION BEFORE SHIFTING
SOUTHEAST INTO NORTHWEST INDIANA BY EARLY EVENING.

SNOW WILL LIKELY IMPACT RUSH HOUR TRAVEL ACROSS THE REGION...WITH
REDUCED VISIBILITY AND SNOW COVERED ROADS MAKING FOR SLIPPERY
TRAVEL AND LONGER COMMUTE TIMES.

SNOW WILL DIMINISH ACROSS NORTHEAST ILLINOIS EARLY THIS EVENING...
THOUGH LAKE EFFECT SNOW WILL MOVE INTO NORTHWEST INDIANA AND MAY
BECOME HEAVY AT TIMES OVERNIGHT.

For those out East in or near Boston (or those flying that direction)

Boston schools are canceled tomorrow, and a snow emergency will be in effect in the city starting at 9 tonight due to approaching snowstorm.

LIGHT SNOW WILL CONTINUE THROUGH 400 PM...GRADUALLY DIMINISHING IN
INTENSITY. VISIBILITIES WILL RANGE FROM ABOUT 1 TO 3 MILES.

LIGHT TO MODERATE SNOW...WITH VISIBILITIES 3/4 MILE OR LESS...WILL
CONTINUE THROUGH 1200 PM FOR FAR NORTHEASTERN ILLINOIS...INCLUDING
CHICAGO AND ITS NORTHERN AND WESTERN SUBURBS. SNOWFALL RATES WILL
RANGE FROM 1/2 INCH PER HOUR TO UP TO 1 INCH PER HOUR UNDER THE
HEAVIEST LAKE ENHANCED BANDS. USE EXTRA CAUTION DRIVING LATE THIS
MORNING...AS MANY AREA ROADWAYS ARE AT LEAST PARTIALLY SNOW-COVERED.

NOW INCLUDES COOK/LAKE/DUPAGE COUNTY.

...WINTER WEATHER ADVISORY IN EFFECT FROM 6 AM THIS MORNING TO
8 PM CST THIS EVENING...

THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A WINTER
WEATHER ADVISORY FOR SNOW...WHICH IS IN EFFECT
FROM 6 AM THIS MORNING TO 8 PM CST THIS EVENING.

* TIMING...SNOW WILL INCREASE IN COVERAGE AND INTENSITY EARLY THIS
MORNING. THE STEADIEST SNOWFALL...BECOMING MODERATE AT
TIMES...IS EXPECTED TO OCCUR BETWEEN ABOUT 9 AM AND 3 PM TODAY.

* ACCUMULATIONS...3 TO 5 INCHES ACROSS THE ADVISORY AREA...WITH
UP TO 6 INCHES POSSIBLE IN LOCALIZED COVERAGE NEAR LAKE MICHIGAN.

* HAZARDS...LIGHT TO OCCASIONALLY MODERATE SNOW. LOW VISIBILITY.

* IMPACTS...ROADS WILL BECOME SNOW COVERED. VISIBILITY REDUCED
TO A MILE OR LESS AT TIMES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW WILL CAUSE
TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED
VISIBILITIES...AND USE CAUTION WHILE DRIVING.

...WINTER WEATHER ADVISORY IN EFFECT BEGINNING MIDNIGHT TONIGHT...

AFFECTED COUNTIES:
IN ILLINOIS: FORD, IROQUOIS, LIVINGSTON. IN INDIANA: BENTON, JASPER, NEWTON.

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM MIDNIGHT CST
/1 AM EST/ TONIGHT TO 6 PM CST /7 PM EST/ TUESDAY...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM MIDNIGHT CST
/1 AM EST/ TONIGHT TO 6 PM CST /7 PM EST/ TUESDAY.

* TIMING...SNOW WILL DEVELOP DURING THE OVERNIGHT HOURS. THE
STEADIEST SNOW IS EXPECTED BETWEEN ABOUT 3 AM AND NOON
TUESDAY.

* ACCUMULATIONS...3 TO 5 INCHES ACROSS THE ADVISORY AREA...WITH
UP TO 6 INCHES POSSIBLE IN LOCALIZED COVERAGE.

* HAZARDS...LIGHT TO OCCASIONALLY MODERATE SNOW. LOW VISIBILITY.

* IMPACTS...ROADS WILL BECOME SNOW COVERED. VISIBILITY REDUCED
TO A MILE OR LESS AT TIMES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW WILL CAUSE
TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED
VISIBILITIES...AND USE CAUTION WHILE DRIVING.

Weather Outlook

ACCUMULATING SNOW IS EXPECTED TO SPREAD INTO NORTHWEST AND WEST
CENTRAL ILLINOIS DURING THE EVENING...AND ACROSS THE REMAINDER OF
NORTHERN ILLINOIS AND INTO NORTHWEST INDIANA BY TUESDAY MORNING.

LOCALIZED ICE JAM FLOODING REMAINS POSSIBLE ON AREA RIVERS.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY.

ACCUMULATING SNOW IS EXPECTED TO CONTINUE ON TUESDAY...WITH
AMOUNTS IN THE 3 TO 5 INCH RANGE POSSIBLE ACROSS EAST CENTRAL
ILLINOIS AND WEST CENTRAL INDIANA...AND LESSER AMOUNTS ACROSS
NORTHERN ILLINOIS.

ADDITIONAL SNOW ACCUMULATIONS OF SEVERAL INCHES ARE LIKELY ACROSS
PORTIONS OF NORTHWEST INDIANA TUESDAY NIGHT THROUGH WEDNESDAY DUE
TO LAKE EFFECT SNOW SHOWERS.

WINTER WEATHER ADVISORY IN EFFECT FROM MIDNIGHT CST /1 AM EST/

AFFECTED COUNTIES:
IN ILLINOIS: FORD, IROQUOIS, LIVINGSTON.  IN INDIANA: BENTON.

...WINTER WEATHER ADVISORY IN EFFECT FROM MIDNIGHT CST /1 AM EST/
TONIGHT TO 6 PM CST /7 PM EST/ TUESDAY...

THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A WINTER
WEATHER ADVISORY FOR SNOW...WHICH IS IN EFFECT
FROM MIDNIGHT CST /1 AM EST/ TONIGHT TO 6 PM CST /7 PM EST/
TUESDAY.

* TIMING...STEADIEST SNOW IS EXPECTED BETWEEN ABOUT 3 AM AND NOON
TUESDAY.

* ACCUMULATIONS...3 TO 5 INCHES ACROSS THE ADVISORY AREA...WITH UP
TO 6 INCHES POSSIBLE IN LOCALIZED COVERAGE.

* HAZARDS...LIGHT TO OCCASIONALLY MODERATE SNOW.  LOW VISIBILITY.

* IMPACTS...ROADS WILL BECOME SNOW COVERED. VISIBILITY REDUCED TO
A MILE OR LESS AT TIMES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW WILL CAUSE
TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED
VISIBILITIES...AND USE CAUTION WHILE DRIVING.