NORTHEAST ILLINOIS AND NORTHWEST INDIANA.
.DAY ONE...TODAY AND TONIGHT.
WEATHER HAZARDS EXPECTED:
THUNDERSTORMS...SOME OF WHICH COULD PRODUCE:
HAIL TO ONE INCH.
STRONG DAMAGING WIND GUSTS IN EXCESS OF 60 MPH.
LOCALLY HEAVY RAINFALL.
AREAS AFFECTED AND TIMING:
ALL OF NORTHERN ILLINOIS AND NORTHWEST INDIANA EARLY THIS
MORNING THROUGH THIS AFTERNOON.
DISCUSSION:
A CLUSTER OF THUNDERSTORMS WILL CONTINUE TO SHIFT EAST INTO
NORTHERN ILLINOIS AND NORTHWEST INDIANA EARLY THIS MORNING AS A
MID LEVEL DISTURBANCE TRACKS EAST ACROSS THE REGION. AS THESE
THUNDERSTORMS MOVE EAST...THEY WILL ENCOUNTER A STRONGLY
UNSTABLE AND MOISTURE RICH ATMOSPHERE WHICH WILL ENABLE THESE
STORMS TO MAKE A STRONG PUSH EAST THIS MORNING. ALTHOUGH LARGE
HAIL WILL BE POSSIBLE...THE MAIN THREAT WITH THESE STORMS WILL
BE STRONG DAMAGING WIND GUSTS AS WELL AS LOCALLY HEAVY RAINFALL.
TEMPERATURES ARE FORECAST TO REACH THE LOWER 90S WITH HIGH
HUMIDITY CONTRIBUTING TO HEAT INDEX VALUES OF 105 TO 110 DEGREES
SOUTH OF A LINE FROM LIVINGSTON COUNTY IN ILLINOIS EAST TO JASPER
COUNTY IN INDIANA...WITH ALL OTHER AREAS IN NORTHERN ILLINOIS AND
NORTHWEST INDIANA FORECAST TO OBSERVE HEAT INDEX VALUES OF AROUND
100 DEGREES.
.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY.
THERE WILL BE PERIODIC CHANCES FOR THUNDERSTORMS TUESDAY THROUGH
SATURDAY.
.SPOTTER INFORMATION STATEMENT...
SPOTTERS WILL LIKELY BE NEEDED EARLY THIS MORNING THROUGH THIS
AFTERNOON.
&&
COMPLETE FORECAST INFORMATION IS AVAILABLE ON THE NWS CHICAGO
WEBPAGE: WEATHER.GOV/CHICAGO
