Spring weather is in the area. Temps are in the mid 50's. Heavy rain and possible thunderstorms tonight. See outlook below

.DAY ONE...TONIGHT.

WEATHER HAZARDS EXPECTED:

SCATTERED THUNDERSTORMS...SOME MAY PRODUCE:
* OCCASIONAL CLOUD TO GROUND LIGHTNING.
* MODERATE TO HEAVY RAINFALL.

COLDER AIR MAY LEAD TO A PERIOD OF FREEZING RAIN AND SLEET LATE
TONIGHT ACROSS FAR NORTHERN ILLINOIS.

AREAS AFFECTED AND TIMING:

SHOWERS AND THUNDERSTORMS WILL CONTINUE TO DEVELOP ACROSS THE AREA
LATE THIS AFTERNOON. THESE SHOWERS AND THUNDERSTORMS WILL
OVERSPREAD ALL OF NORTHEASTERN ILLINOIS AND NORTHWESTERN INDIANA
BY EARLY THIS EVENING. AFTER MIDNIGHT THE RAIN SHOULD ABATE ACROSS
NORTHEASTERN ILLINOIS...BUT WILL LIKELY CONTINUE ACROSS WEST
CENTRAL ILLINOIS AND NORTHWESTERN INDIANA INTO THE EARLY MORNING
HOURS ON SATURDAY.

DISCUSSION:

A LOW PRESSURE SYSTEM MOVING ACROSS THE CENTRAL PLAINS WILL
BRING WARM MOIST AIR INTO THE REGION. WIDESPREAD MODERATE TO
HEAVY RAINFALL WITH ISOLATED EMBEDDED THUNDERSTORMS IS
EXPECTED TO DEVELOP AHEAD OF THE LOW THIS AFTERNOON.
PRECIPITATION TRAINING ALONG THE FRONTAL BOUNDARY IS A CONCERN
AND CAN LEAD TO PROLONGED PERIODS OF PRECIPITATION OVER AN
AREA. HIGH PRECIPITATION AMOUNTS IN EXCESS OF AN INCH ARE
POSSIBLE...AND MAY CAUSE LOCALIZED FLOODING PROBLEMS AS WELL AS
PROLONG FLOODING ALREADY OCCURRING ON PORTIONS OF THE KANKAKEE
AND ILLINOIS RIVERS. THE THREAT FOR HEAVY RAINFALL AND FLOODING
IS HIGHEST ACROSS SOUTHEAST PORTIONS OF THE OUTLOOK AREA.

PORTIONS OF THE ILLINOIS AND KANKAKEE RIVERS WILL REMAIN IN
FLOOD.

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

PORTIONS OF THE ILLINOIS AND KANKAKEE RIVERS WILL REMAIN IN
FLOOD.

THERE IS THE POTENTIAL FOR SOME FREEZING DRIZZLE EARLY SATURDAY
MORNING ACROSS NORTHERN ILLINOIS.

LIGHT SNOW IS EXPECTED SATURDAY AFTERNOON AND EVENING. UP TO AN INCH IS
POSSIBLE ACROSS NORTHERN ILLINOIS AND NORTHWESTERN INDIANA.

ANOTHER ROUND OF HEAVY RAIN AND THUNDERSTORMS IS POSSIBLE FOR
MIDWEEK NEXT WEEK. THUNDERSTORMS WITH LOCALLY HEAVY RAINFALL ARE
POSSIBLE WHICH WOULD LEAD TO RENEWED RISES ON AREA RIVERS...AND
POTENTIALLY...MORE FLOODING.

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