THE NATIONAL WEATHER SERVICE HAS CANCELLED SEVERE THUNDERSTORM
WATCH 408

..A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHERN
COOK...SOUTHEASTERN LAKE AND NORTHEASTERN DUPAGE COUNTIES UNTIL 315
PM CDT...

AT 256 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR
MEDINAH...OR NEAR ADDISON...MOVING NORTHEAST AT 60 MPH.

THIS STORM HAS HAD A HISTORY OF PRODUCING QUARTER SIZED HAIL.

THE SEVERE THUNDERSTORM WILL BE NEAR...
GLENVIEW...NORTHFIELD...MORTON GROVE AND PARK RIDGE AROUND 310 PM
CDT.
WINNETKA...WILMETTE...KENILWORTH AND WILMETTE HARBOR AROUND 315 PM
CDT.

OTHER LOCATIONS IMPACTED BY THIS SEVERE THUNDERSTORM INCLUDE GOLF AND
LINCOLNWOOD.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...LARGE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR
PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME
OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO
AREAS WHERE WATER COVERS THE ROAD.

THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH
408 IN EFFECT UNTIL 11 PM CDT /MIDNIGHT EDT/ THIS EVENING FOR THE
FOLLOWING AREAS

IN ILLINOIS THIS WATCH INCLUDES 12 COUNTIES

IN CENTRAL ILLINOIS

LIVINGSTON

IN EAST CENTRAL ILLINOIS

FORD IROQUOIS

IN NORTH CENTRAL ILLINOIS

LA SALLE

IN NORTHEAST ILLINOIS

COOK DUPAGE GRUNDY
KANE KANKAKEE KENDALL
LAKE IL WILL

IN INDIANA THIS WATCH INCLUDES 5 COUNTIES

IN NORTHWEST INDIANA

BENTON JASPER LAKE IN
NEWTON PORTER

THIS INCLUDES THE CITIES OF...AURORA...CHICAGO...FOWLER...GARY...
JOLIET...KANKAKEE...MOROCCO...MORRIS...OSWEGO...OTTAWA...
PIPER CITY...PONTIAC...RENSSELAER...VALPARAISO...WATSEKA...
WAUKEGAN AND WHEATON.

THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
NORTHERN COOK COUNTY IN NORTHEAST ILLINOIS...
SOUTHEASTERN DE KALB COUNTY IN NORTH CENTRAL ILLINOIS...
DUPAGE COUNTY IN NORTHEAST ILLINOIS...
SOUTHERN KANE COUNTY IN NORTHEAST ILLINOIS...
NORTHERN KENDALL COUNTY IN NORTHEAST ILLINOIS...
SOUTHEASTERN LAKE COUNTY IN NORTHEAST ILLINOIS...
NORTHEASTERN LA SALLE COUNTY IN NORTH CENTRAL ILLINOIS...

* UNTIL 315 PM CDT

* AT 215 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR
SOMONAUK...OR NEAR SANDWICH...AND MOVING NORTHEAST AT 55 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
LITTLE ROCK...PLANO AND HINCKLEY AROUND 225 PM CDT.
SUGAR GROVE AROUND 230 PM CDT.
MONTGOMERY AROUND 235 PM CDT.
NORTH AURORA...BATAVIA AND AURORA AROUND 240 PM CDT.
WEST CHICAGO...GENEVA...DUPAGE AIRPORT AND WARRENVILLE AROUND 245
PM CDT.
CAROL STREAM...WINFIELD AND WHEATON AROUND 250 PM CDT.

OTHER LOCATIONS IMPACTED BY THIS SEVERE THUNDERSTORM INCLUDE BOULDER
HILL...BLOOMINGDALE...GLENDALE HEIGHTS...LINCOLNWOOD AND GOLF.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...LARGE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR
PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME
OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO
AREAS WHERE WATER COVERS THE ROAD.

NOW...
AT 206 PM DOPPLER RADAR INDICATED A THUNDERSTORM OVER LELAND...MOVING
NORTHEAST AT 65 MPH.

LOCATIONS THAT MAY BE AFFECTED INCLUDE...
LITTLE ROCK...SANDWICH...YORKVILLE...SUGAR GROVE...MONTGOMERY...NORTH
AURORA AND AURORA.

GUSTY WINDS...SMALL HAIL...HEAVY RAIN AND LIGHTNING MAY ACCOMPANY
THIS THUNDERSTORM.

Severe weather watch likely to be issued soon for much of Northern Illinois and northwest Indiana.

THERE IS A CHANCE OF THUNDERSTORMS ACROSS THE ENTIRE OUTLOOK AREA
TUESDAY...AND ACROSS PORTIONS OF EASTERN ILLINOIS AND NORTHWEST
INDIANA GENERALLY EAST OF INTERSTATE 55 TUESDAY EVENING. SOME OF
THESE STORMS COULD BE SEVERE TUESDAY AFTERNOON AND EARLY EVENING
WITH DAMAGING WINDS AND LARGE HAIL.

THERE WILL BE PERIODIC CHANCES OF THUNDERSTORMS AGAIN FROM LATE
WEDNESDAY NIGHT THROUGH THURSDAY...AND ON SATURDAY.

THE WARMEST WEATHER OF THE SPRING IS EXPECTED TODAY WITH
TEMPERATURES CLIMBING INTO THE LOW 90S ACROSS MUCH OF THE AREA.
THE HEAT WILL BE ACCOMPANIED BY INCREASING HUMIDITY...LEADING TO
HEAT INDEX VALUES IN THE MIDDLE 90S.

THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A

* FLOOD WARNING FOR...
DE KALB COUNTY IN NORTH CENTRAL ILLINOIS...
DUPAGE COUNTY IN NORTHEAST ILLINOIS...
KANE COUNTY IN NORTHEAST ILLINOIS...
LEE COUNTY IN NORTH CENTRAL ILLINOIS...
NORTHERN COOK COUNTY IN NORTHEAST ILLINOIS...
SOUTHEASTERN OGLE COUNTY IN NORTH CENTRAL ILLINOIS...
SOUTHERN LAKE COUNTY IN NORTHEAST ILLINOIS...

* UNTIL 530 AM CDT MONDAY

* AT 522 PM CDT...FLOODING CONTINUED ACROSS
THE WARNED AREA FROM THUNDERSTORMS THIS AFTERNOON. MANY SMALLER
CREEKS AND STREAMS WILL CONTINUE TO RISE OVERNIGHT.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...ADDISON...
ARLINGTON HEIGHTS...AURORA...BARRINGTON...BATAVIA...BERWYN...
BROOKFIELD...BUFFALO GROVE...CAROL STREAM...CARPENTERSVILLE...
CHICAGO...CICERO...DE KALB...DEERFIELD...DES PLAINES...DUPAGE
AIRPORT...EAST DUNDEE...ELGIN...ELMHURST...EVANSTON...FOREST
PARK...FRANKLIN PARK...GENEVA...GLEN ELLYN...GLENCOE...GLENVIEW...
HARWOOD HEIGHTS...HIGHLAND PARK...HOFFMAN ESTATES AND LINCOLN PARK.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. DO
NOT ENTER THE WATER. TURN AROUND AND MOVE UP TO HIGHER GROUND TO
ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN
WATER BEGINS RISING.

FLOODING IS OCCURRING OR IS IMMINENT. MOST FLOOD RELATED DEATHS OCCUR
IN VEHICLES. DO NOT ATTEMPT TO CROSS WATER COVERED BRIDGES...DIPS...
OR LOW WATER CROSSINGS. NEVER TRY TO CROSS A FLOWING STREAM... EVEN A
SMALL ONE...ON FOOT OR IN A VEHICLE.

FLOODING IS OCCURRING OR IS IMMINENT. IT IS IMPORTANT TO KNOW WHERE
YOU ARE RELATIVE TO STREAMS...RIVERS...OR CREEKS WHICH CAN BECOME
KILLERS IN HEAVY RAINS. CAMPERS AND HIKERS SHOULD AVOID STREAMS OR
CREEKS.

THE WARMEST WEATHER OF THE SPRING IS EXPECTED ON MONDAY WITH
TEMPERATURES CLIMBING INTO THE LOW 90S ACROSS MUCH OF THE AREA.
THE HEAT WILL BE ACCOMPANIED BY INCREASING HUMIDITY...LEADING TO
HEAT INDEX VALUES IN THE MIDDLE OR UPPER 90S.

SEVERE THUNDERSTORM WATCH 394 IS NO LONGER IN EFFECT.

COUNTY SPECIFIC MESSAGE:

/O.CAN.KWNS.SV.A.0394.000000T0000Z-110529T2100Z/

NO COUNTIES OR PARISHES REMAIN IN THE WATCH.

NO MARINE ZONES REMAIN IN THE WATCH.

...GUSTY WINDS EXPECTED THIS AFTERNOON...

ENHANCEMENT OF THE SURFACE PRESSURE GRADIENT DUE TO THE LINE OF
STORMS WHICH PASSED THROUGH THE AREA EARLIER TODAY WILL RESULT IN
WINDS BECOMING EAST TO SOUTHEAST AND GUSTING INTO THE 35 TO 40 MPH
RANGE THIS AFTERNOON. THIS PHENOMENA...KNOWN AS A WAKE LOW...WILL
LIKELY PERSIST FOR A FEW HOURS THIS AFTERNOON BEFORE WEAKENING.

.A TORNADO WARNING REMAINS IN EFFECT FOR EXTREME SOUTHWESTERN WILL
AND KANKAKEE COUNTIES UNTIL 115 PM CDT...

AT 1242 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
STORM WAS LOCATED 6 MILES SOUTHEAST OF GARDNER...OR 11 MILES EAST OF
DWIGHT...MOVING EAST AT 55 MPH. RADAR INDICATION OF ROTATION HAS
DIMINISHED SLIGHTLY...BUT THE ENVIRONMENT IS CONDUCIVE TO SQUALL
LINE TORNADO DEVELOPMENT.

LOCATIONS IMPACTED INCLUDE...
BOURBONNAIS...KANKAKEE...BRADLEY...MANTENO...MOMENCE...HERSCHER...
AROMA PARK...ST. ANNE...GRANT PARK...HOPKINS PARK...BONFIELD...
IRWIN AND SUN RIVER TERRACE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

INTENSE SQUALL LINES CAN OCCASIONALLY PRODUCE BRIEF TORNADOES IN
ADDITION TO WIDESPREAD SIGNIFICANT WIND DAMAGE. ALTHOUGH NOT
IMMEDIATELY LIKELY... FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON
THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. THIS STORM HAS THE
POTENTIAL TO CAUSE SERIOUS INJURY AND SIGNIFICANT DAMAGE TO PROPERTY.

THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
COOK COUNTY IN NORTHEAST ILLINOIS...
DUPAGE COUNTY IN NORTHEAST ILLINOIS...
FORD COUNTY IN EAST CENTRAL ILLINOIS...
EASTERN GRUNDY COUNTY IN NORTHEAST ILLINOIS...
IROQUOIS COUNTY IN EAST CENTRAL ILLINOIS...
EASTERN KANE COUNTY IN NORTHEAST ILLINOIS...
KANKAKEE COUNTY IN NORTHEAST ILLINOIS...
EASTERN KENDALL COUNTY IN NORTHEAST ILLINOIS...
SOUTHERN LAKE COUNTY IN NORTHEAST ILLINOIS...
EASTERN LIVINGSTON COUNTY IN CENTRAL ILLINOIS...
WILL COUNTY IN NORTHEAST ILLINOIS...
WESTERN BENTON COUNTY IN NORTHWEST INDIANA...
JASPER COUNTY IN NORTHWEST INDIANA...
LAKE COUNTY IN NORTHWEST INDIANA...
NEWTON COUNTY IN NORTHWEST INDIANA...
PORTER COUNTY IN NORTHWEST INDIANA...

* UNTIL 200 PM CDT/300 PM EDT/

* AT 1237 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DESTRUCTIVE HURRICANE FORCE WINDS IN EXCESS OF 80 MPH.
THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM GENOA TO
WILMINGTON TO GARDNER TO 6 MILES SOUTHWEST OF FAIRBURY...AND MOVING
EAST AT 60 MPH.

* LOCATIONS IMPACTED INCLUDE...
PLAINFIELD...AURORA...JOLIET...BATAVIA...GENEVA...INGALLS PARK...
ST. CHARLES...GIBSON CITY...ROMEOVILLE...LOCKPORT...NAPERVILLE...
NEW LENOX...DUPAGE AIRPORT...WEST CHICAGO...BOLINGBROOK...ELGIN...
SLEEPY HOLLOW...PIPER CITY...LISLE AND CARPENTERSVILLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...LARGE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR
PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME
OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO
AREAS WHERE WATER COVERS THE ROAD.

THESE STORMS HAVE A HISTORY OF PRODUCING DESTRUCTIVE WINDS TO 75
MPH. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM
WINDOWS! THE DAMAGING WIND THREAT IS ESPECIALLY HIGH ALONG AND SOUTH
OF INTERSTATE 80.

INTENSE SQUALL LINES CAN OCCASIONALLY PRODUCE BRIEF TORNADOES IN
ADDITION TO WIDESPREAD SIGNIFICANT WIND DAMAGE. ALTHOUGH NOT
IMMEDIATELY LIKELY...FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON
THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. THIS STORM HAS THE
POTENTIAL TO CAUSE SERIOUS INJURY AND SIGNIFICANT DAMAGE TO PROPERTY.

THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A

* FLASH FLOOD WARNING FOR...
DUPAGE COUNTY IN NORTHEAST ILLINOIS...
KANE COUNTY IN NORTHEAST ILLINOIS...
NORTHERN COOK COUNTY IN NORTHEAST ILLINOIS...
NORTHERN DE KALB COUNTY IN NORTH CENTRAL ILLINOIS...
NORTHERN LEE COUNTY IN NORTH CENTRAL ILLINOIS...
OGLE COUNTY IN NORTH CENTRAL ILLINOIS...
SOUTHERN BOONE COUNTY IN NORTH CENTRAL ILLINOIS...
SOUTHERN LAKE COUNTY IN NORTHEAST ILLINOIS...
SOUTHERN MCHENRY COUNTY IN NORTHEAST ILLINOIS...
SOUTHERN WINNEBAGO COUNTY IN NORTH CENTRAL ILLINOIS...

* UNTIL 630 PM CDT

* AT 1235 PM CDT...TRAINED WEATHER SPOTTERS REPORTED FLOODING OVER
PORTIONS OF NORTHEAST ILLINOIS WITHIN PORTIONS OF COOK AND OGLE
COUNTIES. THUNDERSTORMS WITH VERY HEAVY RAINFALL WILL CONTINUE TO
MOVE ACROSS THE WARNED AREA.

*RAINFALL RATES WILL APPROACH 1 TO 2 INCHES PER HOUR.

* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND UNDERPASSES
AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS.

FLOODING IS OCCURRING OR IS IMMINENT. MOST FLOOD RELATED DEATHS OCCUR
IN VEHICLES. DO NOT ATTEMPT TO CROSS WATER COVERED BRIDGES...DIPS...
OR LOW WATER CROSSINGS. NEVER TRY TO CROSS A FLOWING STREAM... EVEN A
SMALL ONE...ON FOOT OR IN A VEHICLE.

THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A

* TORNADO WARNING FOR...
SOUTHEASTERN GRUNDY COUNTY...
KANKAKEE COUNTY...
NORTHEASTERN LIVINGSTON COUNTY...
EXTREME SOUTHWESTERN WILL COUNTY...

* UNTIL 115 PM CDT

* AT 1228 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
STORM WAS LOCATED NEAR DWIGHT...AND MOVING EAST AT 55 MPH.

* LOCATIONS IMPACTED INCLUDE...
BOURBONNAIS...KANKAKEE...BRADLEY...MANTENO...MOMENCE...GARDNER...
BRACEVILLE...HERSCHER...AROMA PARK...ST. ANNE...GRANT PARK...
HOPKINS PARK...SOUTH WILMINGTON...EAST BROOKLYN...GODLEY...
REDDICK...ESSEX...BUCKINGHAM...UNION HILL AND BONFIELD.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

THIS LINE OF THUNDERSTORMS IS CAPABLE OF PRODUCING TORNADOES AND
WIDESPREAD SIGNIFICANT WIND DAMAGE. DO NOT WAIT TO SEE OR HEAR THE
TORNADO. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST
FLOOR OF YOUR HOME OR BUSINESS.

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR COOK...
SOUTHEASTERN LAKE AND EASTERN DUPAGE COUNTIES UNTIL 1230 PM CDT...

AT 1201 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DESTRUCTIVE WINDS
IN EXCESS OF 70 MPH. THESE STORMS WERE LOCATED ALONG A LINE
EXTENDING FROM BANNOCKBURN TO ROSEMONT TO DOWNERS GROVE...MOVING EAST
AT 45 MPH.

IN ADDITION...AT 1137 AM CDT, A 58 MPH WIND GUST WAS REPORTED AT
DUPAGE COUNTY AIRPORT IN WEST CHICAGO WITH THIS LINE OF STORMS.

SEVERE THUNDERSTORMS WILL BE NEAR...
WILMETTE HARBOR...WINNETKA...WILMETTE AND WILLOW SPRINGS AROUND
1210 PM CDT.
WORTH...PALOS HILLS...SUMMIT AND ROGERS PARK AROUND 1215 PM CDT.
OAK LAWN...CHICAGO RIDGE...ALSIP AND STICKNEY AROUND 1220 PM CDT.
MERRIONETTE PARK...EVERGREEN PARK AND BLUE ISLAND AROUND 1225 PM
CDT.

OTHER LOCATIONS IMPACTED BY THIS LINE OF SEVERE THUNDERSTORMS INCLUDE
LINCOLNWOOD...LA GRANGE PARK...ELMWOOD PARK...BROADVIEW...MCCOOK...
BRIDGEVIEW AND HOMETOWN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...LARGE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR
PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME
OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO
AREAS WHERE WATER COVERS THE ROAD.

THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
DE KALB COUNTY IN NORTH CENTRAL ILLINOIS...
WESTERN DUPAGE COUNTY IN NORTHEAST ILLINOIS...
NORTHEASTERN FORD COUNTY IN EAST CENTRAL ILLINOIS...
GRUNDY COUNTY IN NORTHEAST ILLINOIS...
KANE COUNTY IN NORTHEAST ILLINOIS...
WESTERN KANKAKEE COUNTY IN NORTHEAST ILLINOIS...
KENDALL COUNTY IN NORTHEAST ILLINOIS...
EASTERN LA SALLE COUNTY IN NORTH CENTRAL ILLINOIS...
NORTHERN LEE COUNTY IN NORTH CENTRAL ILLINOIS...
LIVINGSTON COUNTY IN CENTRAL ILLINOIS...
SOUTHERN OGLE COUNTY IN NORTH CENTRAL ILLINOIS...
WESTERN WILL COUNTY IN NORTHEAST ILLINOIS...

* UNTIL 115 PM CDT

* AT 1156 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DESTRUCTIVE WINDS IN EXCESS OF 70 MPH. THESE STORMS
WERE LOCATED ALONG A LINE EXTENDING FROM FRANKLIN GROVE TO NAPLATE
TO TREMONT...AND MOVING EAST AT 50 MPH.

WIND GUSTS OF 60 MPH HAVE BEEN REPORTED ACROSS WESTERN ILLINOIS
WITH THESE LINE OF STORMS.

* LOCATIONS IMPACTED INCLUDE...
ROCHELLE...MARSEILLES...SERENA...SENECA...SHABBONA...SANDWICH...
MORRIS...DE KALB...LITTLE ROCK...PLANO...SYCAMORE...GENOA...
PONTIAC...YORKVILLE...DWIGHT...MINOOKA...CHANNAHON...WILMINGTON...
OSWEGO AND PLAINFIELD.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...LARGE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR
PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME
OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO
AREAS WHERE WATER COVERS THE ROAD.

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR COOK...
SOUTHERN LAKE...DUPAGE...NORTHWESTERN WILL...NORTHEASTERN KENDALL AND
EASTERN KANE COUNTIES UNTIL 1230 PM CDT...

AT 1146 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DESTRUCTIVE WINDS
IN EXCESS OF 70 MPH. THESE STORMS WERE LOCATED ALONG A LINE
EXTENDING FROM PALATINE TO MEDINAH TO AURORA...MOVING EAST AT 40 MPH.

IN ADDITION...AT 1137 AM CDT, A 58 MPH WIND GUST WAS REPORTED AT
DUPAGE COUNTY AIRPORT IN WEST CHICAGO WITH THIS LINE OF STORMS.

SEVERE THUNDERSTORMS WILL BE NEAR...
BUFFALO GROVE...WHEELING...PROSPECT HEIGHTS AND NAPERVILLE AROUND
1155 AM CDT.
BANNOCKBURN...LINCOLNSHIRE...YORK CENTER AND WOODRIDGE AROUND NOON
CDT.
LEMONT...STONE PARK...PARK RIDGE AND OAK BROOK AROUND 1205 PM CDT.
WILMETTE HARBOR...WINNETKA AND WILMETTE AROUND 1210 PM CDT.

OTHER LOCATIONS IMPACTED BY THIS LINE OF SEVERE THUNDERSTORMS INCLUDE
GLENBARD SOUTH...HIGHWOOD...OAKBROOK TERRACE...GOLF...BERKELEY...
WILLOWBROOK...RIVER GROVE...LINCOLNWOOD...ELMWOOD PARK AND PALOS
PARK.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...LARGE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR
PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME
OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO
AREAS WHERE WATER COVERS THE ROAD.

THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
COOK COUNTY IN NORTHEAST ILLINOIS...
SOUTHEASTERN DE KALB COUNTY IN NORTH CENTRAL ILLINOIS...
DUPAGE COUNTY IN NORTHEAST ILLINOIS...
KANE COUNTY IN NORTHEAST ILLINOIS...
NORTHERN KENDALL COUNTY IN NORTHEAST ILLINOIS...
SOUTHERN LAKE COUNTY IN NORTHEAST ILLINOIS...
NORTHWESTERN WILL COUNTY IN NORTHEAST ILLINOIS...

* UNTIL 1230 PM CDT

* AT 1118 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DESTRUCTIVE WINDS
IN EXCESS OF 70 MPH. THESE STORMS WERE LOCATED ALONG A LINE
EXTENDING FROM 7 MILES SOUTHWEST OF ELGIN TO SANDWICH...AND MOVING
EAST AT 40 MPH.

* LOCATIONS IMPACTED INCLUDE...
SLEEPY HOLLOW...ELGIN...YORKVILLE...CARPENTERSVILLE...EAST
DUNDEE...ST. CHARLES...GENEVA...BATAVIA...DUPAGE AIRPORT...
OSWEGO...HOFFMAN ESTATES...WEST CHICAGO...AURORA...BARRINGTON...
SCHAUMBURG...PALATINE...CAROL STREAM...ROLLING MEADOWS...ROSELLE
AND ARLINGTON HEIGHTS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...LARGE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR
PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME
OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO
AREAS WHERE WATER COVERS THE ROAD.

AN AREA OF STRONG TO SEVERE THUNDERSTORMS OVER EASTERN IOWA WILL
MOVE EAST INTO NORTHERN ILLINOIS DURING THE MID AND LATE MORNING
HOURS TODAY. THESE STORMS WILL LIKELY INCREASE IN BOTH INTENSITY
AND COVERAGE...AND WILL PRESENT A SIGNIFICANT SEVERE WEATHER
THREAT. DAMAGING WINDS AND LARGE HAIL WILL BE POSSIBLE WITH THESE
STORMS AS THEY MOVE INTO THE ROCHELLE...PERU AND PONTIAC AREAS
BETWEEN 1030 AM AND NOON CDT. SEVERE THUNDERSTORMS WILL THEN
SPREAD INTO NORTHEAST ILLINOIS AND NORTHWEST INDIANA SHORTLY AFTER
NOON. ADDITIONAL STORMS MAY DEVELOP AHEAD OF THE MAIN LINE WHICH
WOULD BRING THE THREAT OF SEVERE WEATHER TO THESE AREAS A LITTLE
SOONER. STAY ALERT FOR CHANGING WEATHER CONDITIONS TODAY. A SEVERE
THUNDERSTORM WATCH IS IN EFFECT FOR THE AREA UNTIL 4 PM CDT.

THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH
394 IN EFFECT UNTIL 4 PM CDT /5 PM EDT/ THIS AFTERNOON FOR THE
FOLLOWING AREAS

IN ILLINOIS THIS WATCH INCLUDES 18 COUNTIES

IN CENTRAL ILLINOIS

LIVINGSTON

IN EAST CENTRAL ILLINOIS

FORD IROQUOIS

IN NORTH CENTRAL ILLINOIS

BOONE DE KALB LA SALLE
LEE OGLE WINNEBAGO

IN NORTHEAST ILLINOIS

COOK DUPAGE GRUNDY
KANE KANKAKEE KENDALL
LAKE IL MCHENRY WILL

IN INDIANA THIS WATCH INCLUDES 5 COUNTIES

IN NORTHWEST INDIANA

BENTON JASPER LAKE IN
NEWTON PORTER

THIS INCLUDES THE CITIES OF...AURORA...BELVIDERE...CHICAGO...
DEKALB...DIXON...FOWLER...GARY...JOLIET...KANKAKEE...MOROCCO...
MORRIS...OREGON...OSWEGO...OTTAWA...PIPER CITY...PONTIAC...
RENSSELAER...ROCKFORD...VALPARAISO...WATSEKA...WAUKEGAN...
WHEATON AND WOODSTOCK.

.DENSE FOG ADVISORY IN EFFECT UNTIL 9 AM CDT THIS MORNING...

THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A DENSE FOG
ADVISORY...WHICH IS IN EFFECT UNTIL 9 AM CDT THIS MORNING.

* TIMING...THROUGH 9 AM THIS MORNING.

* VISIBILITY...PATCHY DENSE FOG WITH VISIBILITY OF A QUARTER MILE
OR LESS.

* IMPACTS...PATCHES OF DENSE FOG WILL RESULT IN REDUCED
VISIBILITY AND VISIBILITY THAT VARIES GREATLY OVER SHORT
DISTANCES. MOTORISTS SHOULD BE ALERT FOR RAPID DETERIORATION
IN VISIBILITY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A DENSE FOG ADVISORY MEANS VISIBILITIES WILL FREQUENTLY BE
REDUCED TO LESS THAN ONE QUARTER MILE. IF DRIVING...SLOW DOWN...
USE YOUR HEADLIGHTS...AND LEAVE PLENTY OF DISTANCE AHEAD OF YOU.

.HOT WEATHER ON THE WAY FOR MEMORIAL DAY...

FORECAST HIGH TEMPERATURES ON MEMORIAL DAY ARE IN THE 90S. SO JUST
HOW UNUSUAL IS 90 DEGREES HEAT ON MEMEORIAL DAY? IN CHICAGO...8 OF
THE PAST 138 MEMORIAL DAYS HAVE HAD HIGH TEMPERATURES AT OR ABOVE
90 DEGREES. HERE IS THE LIST OF 90 DEGREE MEMORIAL DAYS IN
CHICAGO...

93 (1942)
93 (1953)
92 (1978)
91 (1895)
91 (1944)
91 (1988)
91 (2006)
90 (1994)

IN ROCKFORD...9 OF THE PAST 104 MEMORIAL DAYS HAVE HAD HIGH
TEMPERATURES AT OR ABOVE 90. HERE IS THE LIST OF 90 DEGREE
MEMORIAL DAYS IN ROCKFORD...

96 (1934)
93 (1921)
92 (1919)
92 (1937)
91 (1939)
91 (1953)
91 (1988)
91 (2006)
90 (1942)

.NOW...
A LINE OF SHOWERS AND THUNDERSTORMS EXTENDS ALONG AND JUST SOUTH
OF INTERSTATE 80 AND CONTINUES TO MOVE EAST AT 45 TO 50 MPH. THE
STRONGEST STORMS WILL BE CAPABLE OF PRODUCING SMALL HAIL...
FREQUENT CLOUD TO GROUND LIGHTNING AND VERY HEAVY RAIN. RAINFALL
RATES OF UP TO ONE INCH PER HOUR ARE POSSIBLE WHICH MAY PRODUCE
MINOR FLOODING IN LOW LYING AND POOR DRAINAGE AREAS...AS WELL AS
PONDING OF WATER ON ROADS. VISIBILITIES MAY ALSO BE REDUCED TO
ONE MILE OR LESS IN THE HEAVIEST RAINS.

.NOW...
AT 425 PM...DOPPLER RADAR INDICATED A LINE OF SHOWERS AND
THUNDERSTORMS ORIENTED WEST TO EAST ACROSS THE INTERSTATE 80
CORRIDOR ACROSS NORTHERN ILLINOIS. THE INDIVIDUAL STORMS IN THIS
LINE ARE MOVING TO THE EAST AT 45 TO 50 MPH...AND ARE MOVING OVER
THE SAME AREAS AS PREVIOUS STORMS. THESE STORMS ARE CAPABLE OF
PRODUCING VERY HEAVY RAINFALL...WHICH COULD LEAD TO MINOR AERIAL
FLOODING AND PONDING ON AREA ROADS. IN ADDITION...SOME OF THE
STRONGEST STORMS WILL BE CAPABLE OF PRODUCING DIME SIZE HAIL.
PERSONS ACROSS THIS REGION CAN EXPECT PERIODS OF SHOWERS AND
THUNDERSTORMS THROUGH 630 PM.

..PRELIMINARY STORM SURVEY RESULTS FROM 22 MAY 2011...

THREE TEAMS WENT OUT TO ASSESS STORM DAMAGE ACROSS THE COUNTY
WARNING AREA TODAY. THESE RESULTS ARE CONSIDERED PRELIMINARY AND A
MORE COMPREHENSIVE WRITEUP WILL BE AVAILABLE LATER THIS EVENING.

JASPER COUNTY:

** CONFIRMED EF1 TORNADO **

MAXIMUM RATING: EF1
PATH LENGTH: 1500-2000 FT
PATH WIDTH: 50-100 FT
LOCATION: NORTH OF WEST WOOD ROAD...SOUTH OF WEST AMSLER
ROAD...CROSSING HIGHWAY 231/NORTH MCKINLEY AVENUE
TIME: ESTIMATED 437 PM CDT

OGLE COUNTY:

** CONFIRMED EF1 TORNADO **

MAXIMUM RATING: EF1
PATH LENGTH: 1 1/2 MI
PATH WIDTH: 200 YARDS
LOCATION: 1 MILE SOUTHEAST OF POLO, IL
TIME: TBD

WINNEBAGO COUNTY:

** STRAIGHT LINE WIND DAMAGE CONFIRMED **

STRAIGHT LINE WIND DAMAGE: MAXIMUM WIND RATING: 90 - 100 MPH
DAMAGE WIDTH: 5 MILES
LOCATION: WEST AND NORTHWEST ROCKFORD...ROSCOE...AND ADJACENT
WINNEBAGO CO
TIME: 6:49 PM TO 7:09 PM CDT

..PRELIMINARY STORM SURVEY RESULTS FROM 22 MAY 2011...

THREE TEAMS WENT OUT TO ASSESS STORM DAMAGE ACROSS THE COUNTY
WARNING AREA TODAY. THESE RESULTS ARE CONSIDERED PRELIMINARY AND A
MORE COMPREHENSIVE WRITEUP WILL BE AVAILABLE LATER THIS AFTERNOON
AND EVENING.

JASPER COUNTY:

** CONFIRMED EF1 TORNADO **

MAXIMUM RATING: EF1
PATH LENGTH: 1500-2000 FT
PATH WIDTH: 50-100 FT
LOCATION: NORTH OF WEST WOOD ROAD...SOUTH OF WEST AMSLER
ROAD...CROSSING HIGHWAY 231/NORTH MCKINLEY AVENUE
TIME: ESTIMATED 437 PM CDT (SUBJECT TO REFINEMENT)

WINNEBAGO COUNTY...ONGOING.

OGLE COUNTY...ONGOING.

NOW...
A LINE OF SHOWERS AND THUNDERSTORMS WAS MOVING THROUGH NORTHERN
ILLINOIS THIS MORNING. AT 825 AM CDT...THE LEADING EDGE OF THE
SHOWERS AND THUNDERSTORMS WAS FROM FOX LAKE IN LAKE COUNTY
SOUTHWEST TO CRYSTAL LAKE AND TO ROCHELLE. THE STRONGER
STORMS ARE CAPABLE OF PRODUCING BRIEF HEAVY DOWNPOURS. THE STORMS
ARE MOVING TO THE WEST AT 30 MPH AND WILL MOVE ACROSS THE
NORTHERN TIER OF COUNTIES THROUGH 930 AM CDT.

..STORM SURVEY TO BE CONDUCTED TODAY...

THE NATIONAL WEATHER SERVICE WILL BE SENDING METEOROLOGISTS OUT
ACROSS PORTIONS OF NORTHERN ILLINOIS AND NORTHWEST INDIANA TODAY
TO ASSESS DAMAGE WHICH WAS SUSTAINED FROM THE PREVIOUS NIGHTS
THUNDERSTORMS. SEVERAL REPORTS OF A POSSIBLE TORNADO ACROSS
WINNEBAGO COUNTY IN ILLINOIS HAVE BEEN RECEIVED...AS WELL AS
REPORTS OF POSSIBLE TORNADO DAMAGE IN JASPER COUNTY IN INDIANA.
THIS ASSESSMENT WILL TAKE A GOOD PORTION OF THE DAY WITH ANY NEW
INFORMATION NOT LIKELY RECEIVED UNTIL LATER THIS AFTERNOON.

TORNADO WATCH 327...PREVIOUSLY IN EFFECT UNTIL 10 PM CDT /11 PM
EDT/ THIS EVENING...IS NOW IN EFFECT UNTIL MIDNIGHT CDT /1 AM
EDT/ TONIGHT FOR THE FOLLOWING AREAS

IN ILLINOIS THIS WATCH INCLUDES 18 COUNTIES

IN CENTRAL ILLINOIS

LIVINGSTON

IN EAST CENTRAL ILLINOIS

FORD IROQUOIS

IN NORTH CENTRAL ILLINOIS

BOONE DE KALB LA SALLE
LEE OGLE WINNEBAGO

IN NORTHEAST ILLINOIS

COOK DUPAGE GRUNDY
KANE KANKAKEE KENDALL
LAKE IL MCHENRY WILL

IN INDIANA THIS WATCH INCLUDES 5 COUNTIES

IN NORTHWEST INDIANA

BENTON JASPER LAKE IN
NEWTON PORTER

THIS INCLUDES THE CITIES OF...AURORA...BELVIDERE...CHICAGO...
DEKALB...DIXON...FOWLER...GARY...JOLIET...KANKAKEE...MOROCCO...
MORRIS...OREGON...OSWEGO...OTTAWA...PIPER CITY...PONTIAC...
RENSSELAER...ROCKFORD...VALPARAISO...WATSEKA...WAUKEGAN...
WHEATON AND WOODSTOCK.

THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
LAKE COUNTY IN NORTHEAST ILLINOIS...
EASTERN MCHENRY COUNTY IN NORTHEAST ILLINOIS...

* UNTIL 815 PM CDT

* AT 719 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DESTRUCTIVE WINDS
IN EXCESS OF 70 MPH. THESE STORMS WERE LOCATED ALONG A LINE
EXTENDING FROM HEBRON TO WOODSTOCK TO 6 MILES NORTHWEST OF
HAMPSHIRE...AND MOVING EAST AT 60 MPH.

* LOCATIONS IMPACTED INCLUDE...
MCHENRY...PISTAKEE HIGHLANDS...FOX LAKE...ISLAND LAKE...LONG
LAKE...ANTIOCH...LAKE VILLA...ROUND LAKE...WAUCONDA...VENETIAN
VILLAGE...LAKE ZURICH...GRAYSLAKE...MUNDELEIN...GAGES LAKE...VERNON
HILLS...LIBERTYVILLE...GURNEE...WINTHROP HARBOR...ZION AND BEACH
PARK.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. TORNADOES CAN
DEVELOP QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH NOT IMMEDIATELY
LIKELY...IF A TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF
SAFETY INSIDE A STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL
INTERIOR ROOM.


A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT SUNDAY EVENING
FOR NORTHEASTERN ILLINOIS AND NORTHWEST INDIANA.

THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A

* TORNADO WARNING FOR...
EASTERN BOONE COUNTY...
NORTHEASTERN DE KALB COUNTY...
MCHENRY COUNTY...

* UNTIL 745 PM CDT

* AT 650 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE SQUALL LINE CAPABLE OF PRODUCING RAIN-WRAPPED
TORNADOES IN ADDITION TO WIDESPREAD STRAIGHT LINE WIND DAMAGE.
THESE DANGEROUS STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 7
MILES NORTHWEST OF ROCKTON TO 6 MILES SOUTHWEST OF ROCKTON TO
ROCKFORD TO ROCKFORD AIRPORT TO STILLMAN VALLEY...AND MOVING EAST
AT 60 MPH.

* THESE STORMS WILL BE NEAR...
CAPRON AROUND 710 PM.
MARENGO AND HARVARD AROUND 715 PM.
WOODSTOCK AROUND 720 PM.
WONDER LAKE...HEBRON AND BULL VALLEY AROUND 725 PM.
RICHMOND...MCHENRY...MCCULLOM LAKE AND LAKEWOOD AROUND 730 PM.

OTHER LOCATIONS IMPACTED BY THESE TORNADIC THUNDERSTORMS INCLUDE
UNION AND CRYSTAL LAKE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A

* TORNADO WARNING FOR...
BOONE COUNTY...
NORTHWESTERN DE KALB COUNTY...
OGLE COUNTY...
WINNEBAGO COUNTY...

* UNTIL 715 PM CDT

* AT 634 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE SQUALL LINE CAPABLE OF PRODUCING RAIN-WRAPPED
TORNADOES IN ADDITION TO WIDESPREAD STRAIGHT LINE WIND DAMAGE.
THESE DANGEROUS STORMS WERE LOCATED ALONG A LINE EXTENDING FROM
RIDOTT TO GERMAN VALLEY TO 5 MILES WEST OF BYRON TO MOUNT MORRIS...
AND MOVING EAST AT 60 MPH.

* THESE STORMS WILL BE NEAR...
WINNEBAGO...STILLMAN VALLEY AND ROCKFORD AIRPORT AROUND 645 PM.
ROCKFORD AROUND 650 PM.
ROCKTON...MACHESNEY PARK...LOVES PARK AND CHERRY VALLEY AROUND 655
PM.
ROSCOE...SOUTH BELOIT AND BELVIDERE AROUND 700 PM.
POPLAR GROVE AND KIRKLAND AROUND 705 PM.

OTHER LOCATIONS IMPACTED BY THESE TORNADIC THUNDERSTORMS INCLUDE NEW
MILLFORD AND DAVIS JUNCTION.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS TORNADO WARNING REPLACES THE SEVERE THUNDERSTORM WARNING THAT
WAS IN EFFECT FOR THE SAME AREA. GO TO A BASEMENT OR SMALL INTERIOR
ROOM ON THE LOWEST FLOOR!

THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
CENTRAL COOK COUNTY IN NORTHEAST ILLINOIS...
NORTHEASTERN DUPAGE COUNTY IN NORTHEAST ILLINOIS...

* UNTIL 430 PM CDT

* AT 320 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR
OAK BROOK...AND MOVING NORTHEAST AT 25 MPH.

AT 310 PM 1 INCH HAIL WAS REPORTED IN LOMBARD WITH THIS STORM.

* LOCATIONS IMPACTED INCLUDE...
ELMHURST...RIVERSIDE...BERWYN...MAYWOOD...FOREST PARK...RIVER
FOREST...FRANKLIN PARK...OAK PARK...OHARE AIRPORT...ROSEMONT...
HARWOOD HEIGHTS...DES PLAINES...PARK RIDGE...MORTON GROVE...
MONTROSE HARBOR...GLENVIEW...SKOKIE...EVANSTON...WILMETTE AND
WINNETKA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...LARGE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR
PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME
OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO
AREAS WHERE WATER COVERS THE ROAD.


A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT SUNDAY EVENING
FOR NORTHEASTERN ILLINOIS AND NORTHWEST INDIANA.

THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
NORTH CENTRAL COOK COUNTY IN NORTHEAST ILLINOIS...
SOUTHEASTERN LAKE COUNTY IN NORTHEAST ILLINOIS...

* UNTIL 415 PM CDT

* AT 311 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR
WHEELING...AND MOVING NORTHEAST AT 35 MPH.

AT 307 PM CDT QUARTER SIZE HAIL WAS REPORTED IN ARLINGTON HEIGHTS
WITH THIS STORM.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
HIGHLAND PARK...BANNOCKBURN AND GLENCOE AROUND 320 PM CDT.
LAKE FOREST AROUND 325 PM CDT.

OTHER LOCATIONS IMPACTED BY THIS SEVERE THUNDERSTORM INCLUDE HIGHWOOD
AND LAKE BLUFF.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...LARGE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR
PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME
OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO
AREAS WHERE WATER COVERS THE ROAD.


A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT SUNDAY EVENING
FOR NORTHEASTERN ILLINOIS AND NORTHWEST INDIANA.

NOW...
THUNDERSTORMS CONTINUE TO DEVELOP SOUTH OF INTERSTATE 80 EARLY
THIS AFTERNOON...STRETCHING FROM SOUTHERN LA SALLE SOUTHEAST INTO
PONTIAC AND FORD COUNTIES. EXPECT THESE THUNDERSTORMS TO CONTINUE
TO DEVELOP AND MOVE NORTHEAST WITH TIME AFFECTING
GRUNDY...KANKAKEE AND IROQUOIS COUNTIES IN ILLINOIS WITHIN THE
NEXT HOUR. LARGE HAIL AND DAMAGING WINDS WILL BE POSSIBLE WITH
THE STRONGER STORMS.

THE NATIONAL WEATHER SERVICE HAS ISSUED TORNADO WATCH 327 IN
EFFECT UNTIL 10 PM CDT /11 PM EDT/ THIS EVENING FOR THE FOLLOWING
AREAS

IN ILLINOIS THIS WATCH INCLUDES 18 COUNTIES

IN CENTRAL ILLINOIS

LIVINGSTON

IN EAST CENTRAL ILLINOIS

FORD IROQUOIS

IN NORTH CENTRAL ILLINOIS

BOONE DE KALB LA SALLE
LEE OGLE WINNEBAGO

IN NORTHEAST ILLINOIS

COOK DUPAGE GRUNDY
KANE KANKAKEE KENDALL
LAKE IL MCHENRY WILL

IN INDIANA THIS WATCH INCLUDES 5 COUNTIES

IN NORTHWEST INDIANA

BENTON JASPER LAKE IN
NEWTON PORTER

THIS INCLUDES THE CITIES OF...AURORA...BELVIDERE...CHICAGO...
DEKALB...DIXON...FOWLER...GARY...JOLIET...KANKAKEE...MOROCCO...
MORRIS...OREGON...OSWEGO...OTTAWA...PIPER CITY...PONTIAC...
RENSSELAER...ROCKFORD...VALPARAISO...WATSEKA...WAUKEGAN...
WHEATON AND WOODSTOCK.

FOG WILL CONTINUE ACROSS EASTERN PORTIONS OF LAKE AND COOK
COUNTIES IN ILLINOIS INTO THE OVERNIGHT HOURS. VISIBILITY OF
AROUND A QUARTER MILE WILL CONTINUE WITHIN A FEW MILES OF THE LAKE
MICHIGAN SHORELINE...WITH POCKETS OF VISIBILITY NEAR ZERO.
MEANWHILE...FOG WILL SLOWLY EXPAND WESTWARD ACROSS CENTRAL AND
WESTERN LAKE AND COOK COUNTIES THROUGH MIDNIGHT REDUCING
VISIBILITY TO AROUND ONE HALF MILE ACROSS THESE AREAS.

..DENSE FOG POSSIBLE NEAR THE LAKE FRONT...

A BANK OF DENSE FOG WILL ROLL SOUTH DOWN THE LAKE LATE THIS
MORNING...LIKELY PENETRATING A MILE OR SO INLAND. AS THIS DENSE
FOG BANK ARRIVES VISIBILITIES WILL QUICKLY DROP TO NEAR ZERO.
DENSE FOG WILL REACH MONTROSE HARBOR AROUND 11 AM CDT...SPREADING
SOUTH TO THE NORTHWEST INDIANA LAKEFRONT BY AROUND NOON. FOG WILL
BE MOST WIDESPREAD AND DENSEST RIGHT ALONG THE LAKE. DENSE FOG
COULD LINGER INTO THE AFTERNOON HOURS RIGHT NEAR THE SHORE.

A DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 10 AM CDT THIS
MORNING.

* TIMING...PRE DAWN THOUGH MID MORNING.

* VISIBILITY...VARYING FROM LESS THAN A QUARTER MILE IN SOME SPOTS
NEAR THE LAKE AND IN NORTHWEST INDIANA TO ONE MILE OR MORE
INLAND.

* IMPACTS...PATCHES OF DENSE FOG WILL RESULT IN REDUCED
VISIBILITY AND VISIBILITY THAT VARIES GREATLY OVER SHORT
DISTANCES. MOTORISTS SHOULD BE ALERT FOR RAPID DETERIORATION
IN VISIBILITY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A DENSE FOG ADVISORY MEANS VISIBILITIES WILL FREQUENTLY BE
REDUCED TO LESS THAN ONE QUARTER MILE. IF DRIVING...SLOW DOWN...
USE YOUR HEADLIGHTS...AND LEAVE PLENTY OF DISTANCE AHEAD OF YOU.

...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT FRIDAY...

THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A DENSE FOG
ADVISORY...WHICH IS IN EFFECT UNTIL 10 AM CDT FRIDAY.

* TIMING...THIS EVENING AND OVERNIGHT...MAINLY WITHIN A FEW MILES
OF THE LAKE MICHIGAN SHORE.

* VISIBILITY...VARYING FROM LESS THAN A QUARTER MILE IN SOME SPOTS
NEAR THE LAKE TO SEVERAL MILES FARTHER INLAND.

* IMPACTS...PATCHES OF DENSE FOG WILL RESULT IN REDUCED VISIBILITY
AND VISIBILITY THAT VARIES GREATLY OVER SHORT DISTANCES.
MOTORISTS SHOULD BE ALERT FOR RAPID DETERIORATION IN VISIBILITY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A DENSE FOG ADVISORY MEANS VISIBILITIES WILL FREQUENTLY BE
REDUCED TO LESS THAN ONE QUARTER MILE. IF DRIVING...SLOW DOWN...
USE YOUR HEADLIGHTS...AND LEAVE PLENTY OF DISTANCE AHEAD OF YOU.

...FROST ADVISORY REMAINS IN EFFECT FROM 3 AM TO 8 AM CDT
TUESDAY...

A FROST ADVISORY REMAINS IN EFFECT FOR THE PRE DAWN AND EARLY
MORNING HOURS OF TUESDAY.

* TEMPERATURE...TEMPERATURES WILL FALL INTO THE LOWER TO MIDDLE
30S OVER PORTIONS OF NORTHERN ILLINOIS DURING THE EARLY MORNING
HOURS. SKIES WILL REMAIN CLEAR AS WINDS CONTINUE TO DIMINISH
AND BECOME LIGHT. LOCATIONS ALONG THE LAKE FRONT AND CLOSER TO
DOWNTOWN CHICAGO WILL REMAIN SLIGHTLY WARMER IN THE UPPER
30S...WHICH SHOULD PREVENT FROST FORMATION.

* IMPACTS...FROST CAN DAMAGE OR KILL TENDER VEGETATION.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FROST ADVISORY MEANS THAT FROST IS POSSIBLE. SENSITIVE OUTDOOR
PLANTS MAY BE KILLED IF LEFT UNCOVERED.

...MORNING RAINFALL ROUNDUP...

THE FOLLOWING ARE RAIN AMOUNTS FOR THE PREVIOUS 24-HOURS
AS MEASURED IN THE MORNING BY NWS COOPERATIVE OBSERVERS
AND COCORAHS OBSERVERS.
OBSERVATIONS ARE USUALLY TAKEN BETWEEN 6 AND 8 AM.

24-HOUR RAINFALL AMOUNTS
FOR SUNDAY(05/15/11)...


ILLINOIS RAIN
LOCATION (COUNTY): FALL (IN)

BURNHAM-HEGEWISCH 2NNW (COOK)................1.26
KANKAKEE 4NW (KANKAKEE)......................1.25
HERSCHER (KANKAKEE)..........................1.23
CHICAGO 6ESE (COOK)..........................1.23
CHICAGO 7NNE (COOK)..........................1.22
PIPER CITY (FORD)............................1.14
DWIGHT (LIVINGSTON)..........................1.05
EVANSTON 1SSE (COOK).........................1.03
LINCOLNWOOD 2E (COOK)........................1.03
EVERGREEN PARK (COOK)........................0.97
BOURBONNAIS (KANKAKEE).......................0.95
BOTANIC GARDENS (COOK).......................0.95
CHATSWORTH (LIVINGSTON)......................0.85
CHATSWORTH (LIVINGSTON)......................0.85
DRESDEN LOCK/DAM (GRUNDY)....................0.82
OAK LAWN 2SE (COOK)..........................0.82
MERRIONETTE PARK 1NNW (COOK).................0.81
FAIRBURY (LIVINGSTON)........................0.78
WATSEKA 5W (IROQUOIS)........................0.77
LAKE FOREST 2NNE (LAKE)......................0.77
RIVERWOODS (LAKE)............................0.76
CHENOA 4NNW (LIVINGSTON).....................0.73
PONTIAC 1SE (LIVINGSTON).....................0.73
ALSIP (COOK).................................0.70
BEACH PARK 1W (LAKE).........................0.70
WAUKEGAN (LAKE)..............................0.70
MIDWAY 3SW (COOK)............................0.67
MANHATTAN 5ENE (WILL)........................0.66
GURNEE 2NE (LAKE)............................0.65
ZION (LAKE)..................................0.65
CHICAGO RIDGE (COOK).........................0.64
MIDWAY (COOK)................................0.64
HOMEWOOD (COOK)..............................0.63
MANHATTAN (WILL).............................0.63
WORTH (COOK).................................0.62
CHANNAHON 2SSE (WILL)........................0.62
COAL CITY 4NNW (GRUNDY)......................0.61
CHANNAHON 1NNE (WILL)........................0.60
LINCOLNSHIRE 1N (LAKE).......................0.59
NEW LENOX 2SE (WILL).........................0.56
ORLAND HILLS 1S (COOK).......................0.55
MOMENCE 3NE (KANKAKEE).......................0.55
MILFORD (IROQUOIS)...........................0.53
OHARE (COOK).................................0.53
ST ANNE (KANKAKEE)...........................0.53
BUFFALO GROVE 2N (LAKE)......................0.52
OAK PARK 1NNE (COOK).........................0.51
CRETE 3SSW (WILL)............................0.51
MARSEILLES (LA SALLE)........................0.50
MONEE (WILL).................................0.50
OAK PARK 1NE (COOK)..........................0.49
CRETE 3E (WILL)..............................0.49
WAUKEGAN 2N (LAKE)...........................0.48
PARK FOREST 1NNE (COOK)......................0.47
MORRIS 1SW (GRUNDY)..........................0.47
OAK PARK 1SW (COOK)..........................0.45
PEOTONE (WILL)...............................0.44
ELMHURST (DU PAGE)...........................0.43
GLEN ELLYN 1NE (DU PAGE).....................0.43
MORRIS 5NNW (GRUNDY).........................0.43
OAK BROOK (DU PAGE)..........................0.41
LA SALLE (LA SALLE)..........................0.40
OTTAWA (LA SALLE)............................0.40
PERU (LA SALLE)..............................0.40
ANTIOCH (LAKE)...............................0.39
WILLOW SPRINGS (COOK)........................0.39
GLEN ELLYN 2SSE (DU PAGE)....................0.38
GLEN ELLYN 1NW (DU PAGE).....................0.38
SENECA 1NE (LA SALLE)........................0.37
JOLIET (WILL)................................0.37
WHEATON (DU PAGE)............................0.36
ELK GROVE VILLAGE 1ESE (COOK)................0.35
COUNTRYSIDE 1ENE (COOK)......................0.35
LISLE 1SE (DU PAGE)..........................0.35
LOMBARD 1NNW (DU PAGE).......................0.35
OSWEGO 5SSE (KENDALL)........................0.35
PEOTONE (WILL)...............................0.35
JOLIET LOCK/DAM (WILL).......................0.35
MUNDELEIN (LAKE).............................0.35
PEOTONE (WILL)...............................0.35
STERLING 4NE (LEE)...........................0.34
HOMER GLEN 4WNW (WILL).......................0.34
SPRING GROVE 2N (MCHENRY)....................0.34
LISLE (DU PAGE)..............................0.32
LOMBARD 1NNW (DU PAGE).......................0.32
SENECA 2SSW (LA SALLE).......................0.32
PALATINE 1E (COOK)...........................0.31
INVERNESS 2S (COOK)..........................0.31
MONTGOMERY 1SSE (KENDALL)....................0.31
ELK GROVE VILLAGE 2WSW (COOK)................0.30
NAPERVILLE 2ENE (DU PAGE)....................0.30
NAPERVILLE 4SSW (WILL).......................0.30
LAKE ZURICH (LAKE)...........................0.29
NAPERVILLE 3ESE (DU PAGE)....................0.28
LISBON 4NE (KENDALL).........................0.28
HOMER GLEN 1ENE (WILL).......................0.28
CAROL STREAM 1WNW (DU PAGE)..................0.27
LAKE VILLA 1SSW (LAKE).......................0.27
PLAINFIELD (WILL)............................0.27
BULL VALLEY 2WNW (MCHENRY)...................0.26
DOWNERS GROVE 2SE (DU PAGE)..................0.25
YORKVILLE 1NE (KENDALL)......................0.25
PLAINFIELD 1SW (WILL)........................0.25
OTTAWA 2N (LA SALLE).........................0.23
BURR RIDGE 2SW (DU PAGE).....................0.22
WHEELING (COOK)..............................0.22
OTTAWA 1NW (LA SALLE)........................0.21
MCHENRY (MCHENRY)............................0.21
YORKVILLE 2SE (KENDALL)......................0.21
WONDER LAKE 1WNW (MCHENRY)...................0.20
JOLIET 2WNW (WILL)...........................0.20
NEWARK (KENDALL).............................0.20
OREGON (OGLE)................................0.20
SUGAR GROVE 1NE (KANE).......................0.19
SUGAR GROVE 1ENE (KANE)......................0.19
ASHTON (LEE).................................0.19
BATAVIA (KANE)...............................0.18
WESTMONT 1SSE (DU PAGE)......................0.18
BATAVIA 2WNW (KANE)..........................0.18
BATAVIA 1WNW (KANE)..........................0.18
WOODSTOCK (MCHENRY)..........................0.18
GENEVA 2WSW (KANE)...........................0.17
SHERIDAN 3SSE (LA SALLE).....................0.17
GENEVA 1SSW (KANE)...........................0.16
BYRON 3N (OGLE)..............................0.16
ROCKFORD 3NE (WINNEBAGO).....................0.16
BARRINGTON (LAKE)............................0.15
HOFFMAN ESTATES 5W (COOK)....................0.15
AMBOY (LEE)..................................0.15
MARSEILLES 6WNW (LA SALLE)...................0.15
ALGONQUIN 1N (MCHENRY).......................0.15
ROCKFORD (WINNEBAGO).........................0.15
STEWARD (LEE)................................0.15
AURORA (KANE)................................0.14
CARPENTERSVILLE 1ESE (KANE)..................0.14
ELBURN 3NNE (KANE)...........................0.14
SHERIDAN (LA SALLE)..........................0.14
STREAMWOOD (COOK)............................0.14
WEST CHICAGO (DU PAGE).......................0.13
GENEVA 3WSW (KANE)...........................0.13
LILY LAKE 2E (KANE)..........................0.13
ROCKFORD 1NW (WINNEBAGO).....................0.13
ELGIN (KANE).................................0.12
GENOA (DE KALB)..............................0.12
ROCHELLE (OGLE)..............................0.12
ST CHARLES 7NW (KANE)........................0.12
ELBURN (KANE)................................0.11
ST CHARLES 1SW (KANE)........................0.11
HEBRON (MCHENRY).............................0.11
CORTLAND (DE KALB)...........................0.10
MALTA (DE KALB)..............................0.10
GENEVA 2ENE (KANE)...........................0.10
HUNTLEY 4W (MCHENRY).........................0.10
ROSCOE 2ESE (WINNEBAGO)......................0.10
MENDOTA (LA SALLE)...........................0.10
ROSCOE 2SE (WINNEBAGO).......................0.10
ELGIN 1S (KANE)..............................0.09
WOODSTOCK 5NW (MCHENRY)......................0.09
DE KALB (DE KALB)............................0.08
ELGIN 2WNW (KANE)............................0.08
PAW PAW (LEE)................................0.08
ROCKTON 1ESE (WINNEBAGO).....................0.04
MENDOTA 1N (LA SALLE)........................0.03

INDIANA RAIN
LOCATION (COUNTY): FALL (IN)

PORTER 1S (PORTER)...........................1.49
LAKE VILLAGE (NEWTON)........................1.24
VALPARAISO 6S (PORTER).......................1.15
PORTAGE 1ESE (PORTER)........................1.12
VALPARAISO (PORTER)..........................1.08
VALPARAISO 5NNE (PORTER).....................1.05
HIGHLAND 1N (LAKE)...........................1.01
DE MOTTE 1NNW (JASPER).......................0.95
DE MOTTE 1SW (JASPER)........................0.93
DE MOTTE 1SSW (JASPER).......................0.87
HEBRON 1NW (PORTER)..........................0.79
LOWELL (LAKE)................................0.73
DE MOTTE 4SW (JASPER)........................0.72
DE MOTTE 6S (JASPER).........................0.66
VALPARAISO 2N (PORTER).......................0.65
MOUNT AYR 2NNE (NEWTON)......................0.64
LAKES OF THE FOUR SEASONS 2NNE (PORTER)......0.64
VALPARAISO 2NW (PORTER)......................0.64
GARY 4SSW (LAKE).............................0.63
HIGHLAND 1ESE (LAKE).........................0.63
VALPARAISO (PORTER)..........................0.62
VALPARAISO 6WSW (PORTER).....................0.61
VALPARAISO 1ENE (PORTER).....................0.60
VALPARAISO 1WNW (PORTER).....................0.60
VALPARAISO 1SE (PORTER)......................0.59
CROWN POINT 2WSW (LAKE)......................0.58
VALPARAISO 3WSW (PORTER).....................0.58
VALPARAISO 1NNW (PORTER).....................0.58
DYER 1WNW (LAKE).............................0.54
SCHERERVILLE 2E (LAKE).......................0.54
MOROCCO (NEWTON).............................0.54
WHEATFIELD 2ENE (JASPER).....................0.52
REMINGTON (JASPER)...........................0.48
KENTLAND (NEWTON)............................0.47
RENSSELAER 10NNE (JASPER)....................0.46
RENSSELAER 10NE (JASPER).....................0.45
WHEATFIELD 3S (JASPER).......................0.44
KENTLAND 2SSE (NEWTON).......................0.43
RENSSELAER 2SSW (JASPER).....................0.42
RENSSELAER (JASPER)..........................0.42
REMINGTON (JASPER)...........................0.41
RENSSELAER 5NW (JASPER)......................0.40

THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A

* TORNADO WARNING FOR...
SOUTHERN DE KALB COUNTY...

* UNTIL 215 PM CDT

* AT 127 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
STORM WAS LOCATED NEAR WATERMAN...OR NEAR SHABBONA...AND MOVING
NORTHEAST AT 10 MPH.

* LOCATIONS IMPACTED INCLUDE...
HINCKLEY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
SOUTHERN BOONE COUNTY IN NORTH CENTRAL ILLINOIS...
NORTH CENTRAL DE KALB COUNTY IN NORTH CENTRAL ILLINOIS...
SOUTHWESTERN MCHENRY COUNTY IN NORTHEAST ILLINOIS...

* UNTIL 130 PM CDT

* AT 1233 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR
KINGSTON...OR NEAR GENOA...AND MOVING NORTH AT 5 MPH.

* LOCATIONS IMPACTED INCLUDE...
MAINLY RURAL AREAS OF NORTHERN DE KALB...SOUTHERN BOONE AND
SOUTHWESTERN MCHENRY COUNTIES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...LARGE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR
PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME
OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO
AREAS WHERE WATER COVERS THE ROAD.

NOW...
ISOLATED THUNDERSTORMS WILL BE POSSIBLE ACROSS NORTHERN ILLINOIS
EARLY THIS MORNING...MAINLY NORTH OF INTERSTATE 80. SOME OF THE
STRONGER STORMS WILL PRODUCE BRIEF HEAVY DOWNPOURS WITH POSSIBLE
LOCALIZED PONDING OF WATER ON ROADS...AND SMALL HAIL AS THEY
SLOWLY MOVE NORTH THIS MORNING.

.NOW...
THUNDERSTORMS WILL CONTINUE TO MOVE SLOWLY ACROSS SOUTHERN
COOK...EASTERN WILL...AND LAKE COUNTY INDIANA THROUGH 930 PM CDT.

SOME OF THE STRONGER CELLS WILL PRODUCE HEAVY DOWNPOURS AND
LOCALIZED PONDING OF WATER ON ROADS AND LOW LYING AREAS. IN
ADDITIONS...SOME SMALL HAIL AND BRIEF WIND GUSTS TO 35 MPH ARE
ALSO POSSIBLE.

THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A

* TORNADO WARNING FOR...
MCHENRY COUNTY...

* UNTIL 530 PM CDT

* AT 455 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS STORM WAS
LOCATED 2 MILES NORTHWEST OF MARENGO...MOVING NORTHEAST AT 20 MPH.

IN ADDITION...A TRAINED SPOTTER REPORTED A FUNNEL CLOUD IN
ASSOCIATION WITH THIS STORM.

* LOCATIONS IMPACTED INCLUDE...
MARENGO...WOODSTOCK...AND WONDER LAKE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

.NOW...
SCATTERED THUNDERSTORMS WERE DEVELOPING ACROSS THE CHICAGO METRO
AREA THIS AFTERNOON. SOME OF THE STORMS WILL PRODUCE DANGEROUS
CLOUD TO GROUND LIGHTNING...SMALL HAIL TO THE SIZE OF
NICKELS...AND HEAVY DOWNPOURS WHICH CAN CAUSE STREET FLOODING. THE
STORMS WILL CONTINUE THROUGH THE REST OF THE AFTERNOON.

AT 400 PM THE STRONGEST STORMS WERE ALONG THE MCHENRY AND LAKE
COUNTY LINE...WEST OF ELGIN IN NORTHERN KANE COUNTY...NEAR ARLINGTON
HEIGHTS IN NORTHERN COOK COUNTY...AND NEAR MANHATTAN IN WILL
COUNTY. THE STORMS WERE MOVING NORTHEAST AT 20 MPH. OTHER STORMS
MAY DEVELOP RAPIDLY THIS AFTERNOON.

THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
NORTHWESTERN LAKE COUNTY IN NORTHEAST ILLINOIS...
NORTHEASTERN MCHENRY COUNTY IN NORTHEAST ILLINOIS...

* UNTIL 415 PM CDT

* AT 313 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL. THIS
STORM WAS LOCATED NEAR WONDER LAKE...AND MOVING NORTHEAST AT 10
MPH.

* LOCATIONS IMPACTED INCLUDE...
WONDER LAKE...MCHENRY...PISTAKEE HIGHLANDS...FOX LAKE...ROUND
LAKE...ANTIOCH...LAKE VILLA...LONG LAKE...VENETIAN VILLAGE...
HEBRON...MCCULLOM LAKE...RICHMOND...LAKEMOOR...SUNNYSIDE...SPRING
GROVE...CHANNEL LAKE...LAKE CATHERINE...LINDENHURST...FOX LAKE
HILLS AND ROUND LAKE HEIGHTS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...LARGE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR
PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME
OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO
AREAS WHERE WATER COVERS THE ROAD.

SEVERE THUNDERSTORM WATCH 281 REMAINS IN EFFECT UNTIL 700 PM CDT
FOR THE FOLLOWING LOCATIONS

COUNTY SPECIFIC MESSAGE:

/O.CON.KWNS.SV.A.0281.000000T0000Z-110512T0000Z/

IL
. ILLINOIS COUNTIES INCLUDED ARE

BOONE BUREAU CARROLL
DE KALB FULTON GRUNDY
HANCOCK HENDERSON HENRY
JO DAVIESS KANE KENDALL
KNOX LA SALLE LEE
MCDONOUGH MCHENRY MARSHALL
MERCER OGLE PEORIA
PUTNAM ROCK ISLAND SCHUYLER
STARK STEPHENSON WARREN
WHITESIDE WINNEBAGO



AFFECTED COUNTIES:
IN ILLINOIS: BOONE, BUREAU, CARROLL, DEKALB, FULTON, GRUNDY, HANCOCK, HENDERSON, HENRY, JO DAVIESS, KANE, KENDALL, KNOX, LA SALLE, LEE, MARSHALL, MCDONOUGH, MCHENRY, MERCER, OGLE, PEORIA, PUTNAM, ROCK ISLAND, SCHUYLER, STARK, STEPHENSON, WARREN, WHITESIDE, WINNEBAGO.

SEVERE THUNDERSTORM WATCH 281 REMAINS IN EFFECT UNTIL 700 PM CDT
FOR THE FOLLOWING LOCATIONS

IL
. ILLINOIS COUNTIES INCLUDED ARE

BOONE BUREAU CARROLL
DE KALB FULTON GRUNDY
HANCOCK HENDERSON HENRY
JO DAVIESS KANE KENDALL
KNOX LA SALLE LEE
MCDONOUGH MCHENRY MARSHALL
MERCER OGLE PEORIA
PUTNAM ROCK ISLAND SCHUYLER
STARK STEPHENSON WARREN
WHITESIDE WINNEBAGO

AFFECTED COUNTIES:
IN ILLINOIS: BOONE, BUREAU, CARROLL, DEKALB, FULTON, GRUNDY, HANCOCK, HENDERSON, HENRY, JO DAVIESS, KANE, KENDALL, KNOX, LA SALLE, LEE, MARSHALL, MCDONOUGH, MCHENRY, MERCER, OGLE, PEORIA, PUTNAM, ROCK ISLAND, SCHUYLER, STARK, STEPHENSON, WARREN, WHITESIDE, WINNEBAGO.

A severe thunderstorm watch likely will be issued soon for northern IL and southern WI.

Details out soon!

..RECORD HIGH TEMPERATURE TIED AT ROCKFORD IL...

A RECORD HIGH TEMPERATURE OF 91 DEGREES WAS SET AT ROCKFORD IL
TODAY AT 346 PM CDT. THIS TIES THE OLD RECORD OF 91 SET IN 1922.

.RECORD DAILY MAXIMUM TEMPERATURE BROKEN AT CHICAGO-OHARE IL FOR
MAY 10TH...

A RECORD HIGH TEMPERATURE OF 90 DEGREES WAS REACHED AT 354 PM CDT
ON TUESDAY MAY 10TH. THIS BROKE THE RECORD OF 89 DEGREES SET BACK
IN 1896.

* TORNADO WARNING FOR...
SOUTHEASTERN FORD COUNTY...
SOUTHWESTERN IROQUOIS COUNTY...

* UNTIL 445 PM CDT

* AT 404 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
STORM WAS LOCATED NEAR PAXTON...AND MOVING SOUTHEAST AT 40 MPH.

* LOCATIONS IMPACTED INCLUDE...
MAINLY RURAL AREAS OF SOUTHEASTERN FORD COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

.NOW...
A BAND OF SHOWERS AND ISOLATED THUNDERSTORMS WILL CONTINUE MOVING
NORTHEAST ACROSS MUCH OF NORTHERN ILLINOIS AND NORTHWEST INDIANA
THROUGH 9 PM CDT.

HEAVIER CELLS WITHIN THIS LINE MAY PRODUCE BRIEF HEAVY DOWNPOURS
AND BRIEF WIND GUSTS TO AROUND 40 MPH.

A BAND OF SHOWERS AND ISOLATED THUNDERSTORMS WILL CONTINUE MOVING
NORTHEAST ACROSS MUCH OF NORTHERN ILLINOIS AND NORTHWEST INDIANA
THROUGH 9 PM CDT.

HEAVIER CELLS WITHIN THIS LINE MAY PRODUCE BRIEF HEAVY DOWNPOURS
AND BRIEF WIND GUSTS TO AROUND 30 MPH.

BE AIR AWARE. THE NATIONAL WEATHER SERVICE HAS
DESIGNATED MAY 2 THROUGH MAY 6 AS THE ANNUAL NATIONAL AIR
QUALITY AWARENESS WEEK. LOW QUALITY AIR CAN BE DETRIMENTAL
TO YOUR HEALTH AND WELL BEING WHEN BREATHED. SO BEING
INFORMED OF THE PRESENCE OF LOW QUALITY AIR ALLOWS ONE TO
TAKE PROPER PRECAUTIONS AND INCLUDE PREVENTIVE MEASURES IN
THEIR DAILY ACTIVITIES. THE NATIONAL WEATHER SERVICE HAS
PARTNERED WITH THE U.S. ENVIRONMENTAL PROTECTION AGENCY
TO KEEP YOU INFORMED OF THE PRESENCE OF POLLUTION...OZONE...OR
PARTICULATE MATTER IN THE AIR SURROUNDING YOU. OUR NWS AIR
QUALITY PROGRAM GOAL IS TO PROVIDE YOU WITH AIR QUALITY
FORECASTS WITH ENOUGH ACCURACY AND ADVANCE NOTICE SO YOU
CAN MAKE INFORMED DECISIONS DURING YOUR DAILY ACTIVITIES WHICH
CAN PREVENT OR REDUCE ADVERSE EFFECTS. IN THE EVENT OF LOW
QUALITY AIR WITHIN OUR AREA...AN AIR QUALITY ACTION DAY WILL BE
ISSUED BY THE ILLINOIS EPA...WWW.EPA.STATE.IL.US...AND...OR THE
INDIANA DEPARTMENT OF ENVIRONMENTAL MANAGEMENT...WWW.IN.GOV/IDEM...
WHICH WILL BE FORWARDED TO THE PUBLIC BY THE CHICAGO NATIONAL
WEATHER SERVICE WEATHER FORECAST OFFICE. EACH DAY OF AIR QUALITY
AWARENESS WEEK WILL FEATURE A UNIQUE TOPIC RELEVANT TO EDUCATION AND
PREPAREDNESS.

TODAY WE HIGHLIGHT THE TOOLS AVAILABLE TO HELP YOU GET AIR QUALITY
INFORMATION.

OVER THE PAST DECADE...MORE STATE AND LOCAL AGENCIES HAVE BEGUN AIR
QUALITY FORECASTING FOR THEIR COMMUNITIES. TODAY MORE THAN 300
CITIES NATIONWIDE ARE ISSUING AIR QUALITY FORECASTS BASED ON
PREDICTED CONCENTRATIONS OF KNOWN POLLUTANTS SUCH AS OZONE AND
PARTICLE POLLUTION.

FOR THOSE LOCALITIES FORECASTING AIR QUALITY...NOAA FORECAST
GUIDANCE IS IMPROVING STATE AND LOCAL AGENCY FORECASTERS ABILITY TO
PREDICT THE ONSET...SEVERITY...AND DURATION OF POOR AIR QUALITY. IN
ADDITION...NOAA PROVIDES COMPREHENSIVE AIR QUALITY PREDICTIONS ON
WWW.WEATHER.GOV/AQ...WITH HOUR BY HOUR INFORMATION ABOUT OZONE AND
SMOKE FOR CITIES...SUBURBS...AND RURAL COMMUNITIES ACROSS THE
NATION. THAT WEB SITE AGAIN IS WWW.WEATHER.GOV/AQ.

FOR UP TO DATE AIR QUALITY INFORMATION...THE EPA ENVIROFLASH TOOL
PROVIDES AIR QUALITY FORECASTS AND ACTION DAY NOTIFICATIONS FOR
PARTICIPATING COMMUNITIES VIA EMAIL OR PAGER NOTIFICATION.
ENVIROFLASH PROVIDES INSTANT INFORMATION THAT CAN BE CUSTOMIZED FOR
EACH USERS NEEDS.

TOMORROW WE WILL LEARN ABOUT WHAT YOU CAN DO TO MAKE THE AIR CLEANER.

FOR MORE INFORMATION ON AIR QUALITY AWARENESS WEEK...VISIT US ON THE
WORLD WIDE WEB AT WWW.AIRQUALITY.NOAA.GOV.

BE AIR AWARE. THE NATIONAL WEATHER SERVICE HAS DESIGNATED MAY 2
THROUGH MAY 6 AS THE ANNUAL NATIONAL AIR QUALITY AWARENESS WEEK. LOW
QUALITY AIR CAN BE DETRIMENTAL TO YOUR HEALTH AND WELL BEING WHEN
BREATHED. SO BEING INFORMED OF THE PRESENCE OF LOW QUALITY AIR
ALLOWS ONE TO TAKE PROPER PRECAUTIONS AND INCLUDE PREVENTIVE
MEASURES IN THEIR DAILY ACTIVITIES. THE NATIONAL WEATHER SERVICE HAS
PARTNERED WITH THE U.S. ENVIRONMENTAL PROTECTION AGENCY TO KEEP YOU
INFORMED OF THE PRESENCE OF POLLUTION...OZONE...OR PARTICULATE
MATTER IN THE AIR SURROUNDING YOU. OUR NWS AIR QUALITY PROGRAM GOAL
IS TO PROVIDE YOU WITH AIR QUALITY FORECASTS WITH ENOUGH ACCURACY
AND ADVANCE NOTICE SO YOU CAN MAKE INFORMED DECISIONS DURING YOUR
DAILY ACTIVITIES WHICH CAN PREVENT OR REDUCE ADVERSE EFFECTS. IN THE
EVENT OF LOW QUALITY AIR WITHIN OUR AREA...AN AIR QUALITY ACTION DAY
WILL BE ISSUED BY THE ILLINOIS EPA...WWW.EPA.STATE.IL.US...AND...OR
THE INDIANA DEPARTMENT OF ENVIRONMENTAL
MANAGEMENT...WWW.IN.GOV/IDEM...WHICH WILL BE FORWARDED TO THE PUBLIC
BY THE CHICAGO NATIONAL WEATHER SERVICE WEATHER FORECAST OFFICE.
EACH DAY OF AIR QUALITY AWARENESS WEEK WILL FEATURE A UNIQUE
TOPIC RELEVANT TO EDUCATION AND PREPAREDNESS.

TODAY WE HIGHLIGHT THE HEALTH IMPACTS OF POOR AIR QUALITY.

YOU ARE EXPOSED TO AIRBORNE CONTAMINATION EVERY TIME YOU BREATHE
POLLUTED AIR. BUT WHEN YOU EXERCISE...WORK IN THE YARD...OR DO OTHER
STRENUOUS ACTIVITIES THAT MAKE YOU BREATHE HARDER AND FASTER...YOU
INHALE EVEN MORE POLLUTED AIR INTO YOUR LUNGS.

EXPOSURE TO HIGH LEVELS OF OZONE AND PARTICLE POLLUTION IS LINKED
WITH A NUMBER OF SIGNIFICANT HEALTH PROBLEMS. CHILDREN...PEOPLE
WITH LUNG DISEASE...OLDER ADULTS...AND PEOPLE WITH HEART DISEASE TEND
TO BE MORE VULNERABLE. WHEN POLLUTION REACHES HIGH ENOUGH LEVELS...
THE AIR CAN BE UNHEALTHY FOR EVERYONE...ESPECIALLY IF YOU ARE ACTIVE
OUTDOORS. YOU CAN HELP PROTECT YOURSELF SIMPLY BY CHANGING THE TIME
OR INTENSITY OF YOUR ACTIVITIES.

USE THE AIR QUALITY INDEX AND DAILY AIR QUALITY FORECASTS TO HELP YOU
DETERMINE WHEN YOU NEED TO MAKE CHANGES. THE AIR QUALITY INDEX IS A
COLOR CODED SCALE THAT TELLS YOU WHO NEEDS TO TAKE STEPS TO REDUCE
EXPOSURE TO OZONE OR PARTICLE POLLUTION. LOCAL AIR QUALITY FORECASTS
ARE AVAILABLE AT WWW.AIRNOW.GOV.

USE AIR QUALITY FORECAST GUIDANCE AT WWW.WEATHER.GOV/AQ TO FIND MAP
PROJECTIONS OF WHEN AND WHERE THE AIR YOU BREATHE IS EXPECTED TO HAVE
HIGH AMOUNTS OF POLLUTANTS. ONCE AGAIN...FOR AIR QUALITY FORECAST
GUIDANCE GO TO WWW.WEATHER.GOV/AQ.

TOMORROW WE WILL LEARN ABOUT TOOLS TO HELP YOU GET AIR QUALITY
INFORMATION.

FOR MORE INFORMATION ON AIR QUALITY AWARENESS WEEK...VISIT US ON THE
WORLD WIDE WEB AT WWW.AIRQUALITY.NOAA.GOV.

.FROST ADVISORY IN EFFECT FROM 4 AM TO 8 AM CDT WEDNESDAY...

THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A FROST
ADVISORY...WHICH IS IN EFFECT FROM 4 AM TO 8 AM CDT WEDNESDAY.

* TEMPERATURE...TEMPERATURES WILL DROP INTO THE LOWER TO MIDDLE
30S OVER PORTIONS OF NORTHERN ILLINOIS DURING THE EARLY MORNING
HOURS AS SKIES CLEAR AND WINDS BECOME LIGHT. THIS SHOULD LEAD TO
AREAS OF FROST. LOCATIONS ALONG THE LAKE FRONT AND NEAR DOWNTOWN
CHICAGO SHOULD REMAIN A LITTLE WARMER...SO FROST IS NOT EXPECTED
THERE.

* IMPACTS...FROST CAN KILL OR DAMAGE SENSITIVE VEGETATION. THE
APPROPRIATE ACTIONS SHOULD BE TAKEN TO PREVENT THIS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FROST ADVISORY MEANS THAT FROST IS POSSIBLE. SENSITIVE OUTDOOR
PLANTS MAY BE KILLED IF LEFT UNCOVERED.

FROST ADVISORY REMAINS IN EFFECT FROM 4 AM TO 7 AM CDT
TUESDAY...

A FROST ADVISORY REMAINS IN EFFECT FROM 4 AM TO 7 AM CDT TUESDAY.

* TEMPERATURE...EXPECT TEMPERATURES TO FALL INTO THE MIDDLE 30S
LATE TONIGHT. THIS WILL SET THE STAGE FOR AREAS OF FROST TO
DEVELOP. TEMPERATURES WILL QUICKLY WARM INTO THE 40S EARLY ON
TUESDAY MORNING ENDING THE THREAT.

* IMPACTS...FROST CAN DAMAGE OR KILL SENSITIVE VEGETATION. THE
APPROPRIATE ACTIONS SHOULD BE TAKEN TO PREVENT THIS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FROST ADVISORY MEANS THAT FROST IS POSSIBLE. SENSITIVE OUTDOOR
PLANTS MAY BE KILLED IF LEFT UNCOVERED.

..FROST ADVISORY IN EFFECT FROM 4 AM TO 7 AM CDT TUESDAY...

THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A FROST
ADVISORY...WHICH IS IN EFFECT FROM 4 AM TO 7 AM CDT TUESDAY.

* TEMPERATURE...EXPECT TEMPERATURES TO FALL INTO THE MIDDLE 30S
LATE TONIGHT. THIS WILL SET THE STAGE FOR AREAS OF FROST TO
DEVELOP. TEMPERATURES WILL QUICKLY WARM INTO THE 40S EARLY ON
TUESDAY MORNING ENDING THE THREAT.

* IMPACTS...FROST CAN DAMAGE OR KILL SENSITIVE VEGETATION. THE
APPROPRIATE ACTIONS SHOULD BE TAKEN TO PREVENT THIS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FROST ADVISORY MEANS THAT FROST IS POSSIBLE. SENSITIVE OUTDOOR
PLANTS MAY BE KILLED IF LEFT UNCOVERED.

..A LOOK BACK AT THE CLIMATE FOR THE MONTH OF APRIL 2011 FOR
CHICAGO AND ROCKFORD...

AT CHICAGO...THE AVERAGE HIGH TEMPERATURE WAS 56.1 DEGREES WHICH IS
1.9 DEGREES BELOW NORMAL. THE AVERAGE LOW TEMPERATURE WAS 39.3
DEGREES WHICH IS 1.7 DEGREES ABOVE NORMAL. THE AVERAGE TEMPERATURE
FOR THE MONTH WAS 47.7 DEGREES WHICH IS 0.1 DEGREES BELOW NORMAL.
4.90 INCHES OF PRECIPITATION WERE RECORDED WHICH IS 1.22 INCHES ABOVE
NORMAL. 0.6 INCHES OF SNOW WERE RECORDED WHICH IS 1.0 INCHES BELOW
NORMAL.

A RECORD DAILY SNOWFALL OF 0.6 INCHES WAS SET ON APRIL 18TH...WHICH BROKE
THE PREVIOUS RECORD FOR THE DATE OF 0.4 INCHES SET IN 1910.

AT ROCKFORD...THE AVERAGE HIGH TEMPERATURE WAS 57.7 DEGREES WHICH
IS 1.4 DEGREES BELOW NORMAL. THE AVERAGE LOW TEMPERATURE WAS 40.1
DEGREES WHICH IS 3.3 DEGREES ABOVE NORMAL. THE AVERAGE TEMPERATURE
FOR THE MONTH WAS 48.9 DEGREES WHICH IS 1.0 DEGREES ABOVE NORMAL.
3.40 INCHES OF PRECIPITATION WERE RECORDED WHICH IS 0.22 INCHES BELOW
NORMAL. A TRACE OF SNOW WAS RECORDED WHICH IS 1.4 INCHES BELOW
NORMAL.

NO RECORDS WERE TIED OR SET DURING THE MONTH OF APRIL AT ROCKFORD.