NORTHEAST ILLINOIS AND NORTHWEST INDIANA.
.DAY ONE...TODAY AND TONIGHT.
WEATHER HAZARDS EXPECTED:
THUNDERSTORMS...SOME MAY PRODUCE:
HEAVY RAINFALL.
CLOUD TO GROUND LIGHTNING.
AND PEA SIZED HAIL.
AREAS AFFECTED AND TIMING:
THUNDERSTORM CHANCES WILL BE ON THE INCREASE TONIGHT FROM WEST
TO EAST...WITH THE HIGHEST PROBABILITIES WEST OF A ROCKFORD TO
PAXTON LINE AFTER MIDNIGHT.
DISCUSSION:
A WARM FRONT AND UPPER LEVEL DISTURBANCE WILL APPROACH THE
REGION FROM THE WEST TONIGHT. NUMEROUS SHOWERS AND THUNDERSTORMS
ARE FORECAST TO DEVELOP OVER IOWA AND NORTHERN MISSOURI THIS
AFTERNOON. THESE STORMS WILL SLOWLY SPREAD EASTWARD ACROSS
NORTHERN ILLINOIS TONIGHT...POSSIBLY EVEN REACHING NORTHWEST
INDIANA TOWARD DAWN WEDNESDAY. THE PRIMARY THREAT FROM THESE
STORMS IS EXPECTED TO BE TORRENTIAL DOWNPOURS WHICH COULD RESULT
IN SOME LOCALLY HEAVY RAINFALL TOTALS.
PORTIONS OF THE KANKAKEE RIVER IN NORTHWEST INDIANA AND ILLINOIS
RIVER IN LA SALLE COUNTY WILL REMAIN IN FLOOD.
.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY.
SOME THUNDERSTORMS ARE LIKELY WEDNESDAY...ESPECIALLY IN THE
MORNING. ONCE AGAIN LOCALLY HEAVY RAINFALL WILL BE POSSIBLE WITH
THE STRONGER STORMS.
THERE WILL LIKELY BE A PERIOD OR TWO OF THUNDERSTORMS THURSDAY
THROUGH THE UPCOMING WEEKEND...THOUGH THE MAJORITY OF THE TIME
WILL BE DRY.
PORTIONS OF THE KANKAKEE RIVER IN NORTHWEST INDIANA AND ILLINOIS
RIVER IN LA SALLE COUNTY WILL REMAIN IN FLOOD.
.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION WILL NOT BE NECESSARY THROUGH TONIGHT.
&&
COMPLETE FORECAST INFORMATION IS AVAILABLE ON THE NWS CHICAGO
WEBPAGE: WEATHER.GOV/CHICAGO
