Amf Ohare Weather - Special Cases

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTH CENTRAL
ILLINOIS...NORTHEAST ILLINOIS AND NORTHWEST INDIANA.

.DAY ONE...TONIGHT.

WEATHER HAZARDS EXPECTED:

THUNDERSTORMS.

AREAS AFFECTED AND TIMING:

MAINLY NORTHWEST OF A CHICAGO TO MENDOTA LINE WELL AFTER MIDNIGHT.

DISCUSSION:

A THUNDERSTORM COMPLEX IS EXPECTED TO DEVELOP OVER NORTHERN IOWA
AT THE NOSE OF A WARM MOIST LOW LEVEL JET TONIGHT. THESE
THUNDERSTORMS
COULD MOVE INTO NORTHWEST ILLINOIS LATE TONIGHT OR MONDAY
MORNING. SEVERE WEATHER IS NOT ANTICIPATED.

PORTIONS OF THE ROCK RIVER WILL REMAIN IN FLOOD.

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

THUNDERSTORMS ARE POSSIBLE MONDAY THROUGH TUESDAY NIGHT. THE
ATMOSPHERE WILL BECOME VERY WARM AND UNSTABLE ESPECIALLY IN THE
AFTERNOON AND EARLY EVENING MONDAY AND AGAIN TUESDAY. A FEW SEVERE
STORMS WITH HAIL AND GUSTY WINDS ARE POSSIBLE. HEAVY RAIN AND
LOCALIZED FLOODING IS ALSO POSSIBLE.

PORTIONS OF THE ROCK RIVER WILL REMAIN IN FLOOD.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NECESSARY THROUGH TONIGHT.

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COMPLETE FORECAST INFORMATION IS AVAILABLE ON THE NWS CHICAGO
WEBPAGE: WEATHER.GOV/CHICAGO