NORTHEAST ILLINOIS AND NORTHWEST INDIANA.
.DAY ONE...TODAY AND TONIGHT.
WEATHER HAZARDS EXPECTED:
THUNDERSTORMS...SOME OF WHICH MAY PRODUCE:
HAIL AND WIND GUSTS APPROACHING SEVERE LIMITS.
LOCALLY HEAVY DOWNPOURS.
AREAS AFFECTED AND TIMING:
LATE THIS AFTERNOON INTO THE EVENING ALONG AND NORTH OF
INTERSTATE 88.
DISCUSSION:
WITH A WARM AND MOIST AIR MASS REMAINING OVERHEAD...INSTABILITY
WILL INCREASE TODAY...ESPECIALLY ACROSS NORTHERN ILLINOIS. THIS
MOISTURE AND INSTABILITY WILL COINCIDE WITH AN APPROACHING COLD
FRONT MOVING IN FROM THE NORTH AND HELP FOR SCATTERED
THUNDERSTORM DEVELOPMENT THIS AFTERNOON. ALTHOUGH WINDS ALOFT
ARE FORECAST TO REMAIN RATHER WEAK...THIS FRONT WILL BE MOVING
THROUGH A HIGH MOISTURE CONTENT AND UNSTABLE AIR MASS WHICH
COULD PROVIDE FOR ISOLATED STRONGER DEVELOPMENT.
HEAT INDEX VALUES AROUND 105 DEGREES WILL BE POSSIBLE THIS
AFTERNOON FROM AREAS NEAR PONTIAC IN ILLINOIS EAST TO REMINGTON IN
INDIANA.
.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY.
THUNDERSTORMS WILL ONCE AGAIN BE POSSIBLE SATURDAY INTO SATURDAY
NIGHT FOR THE ENTIRE AREA . AS A COLD FRONT PUSHES THROUGH THE
AREA WITH STRONGER FLOW ALOFT APPROACHING...A HIGHER CHANCE FOR
LARGE HAIL AND STRONG DAMAGING WIND GUSTS WILL BE POSSIBLE.
THERE WILL BE AN INCREASED RISK OF RIP CURRENTS SUNDAY THROUGH
MONDAY ALONG BOTH THE ILLINOIS AND INDIANA SHORES OF LAKE
MICHIGAN.
.SPOTTER INFORMATION STATEMENT...
SPOTTERS MAY BE NEEDED LATE THIS AFTERNOON INTO THE EARLY EVENING.
&&
COMPLETE FORECAST INFORMATION IS AVAILABLE ON THE NWS CHICAGO
WEBPAGE: WEATHER.GOV/CHICAGO
