NORTHEAST ILLINOIS AND NORTHWEST INDIANA.
.DAY ONE...TODAY AND TONIGHT.
WEATHER HAZARDS EXPECTED:
HEAVY RAINFALL...WHICH MAY LEAD TO LOCALIZED FLOODING
CLOUD TO GROUND LIGHTNING
PEA SIZED HAIL
DAMAGING WIND GUSTS
AREAS AFFECTED AND TIMING:
MUCH OF NORTHEASTERN ILLINOIS AND NORTHWESTERN INDIANA LATE
THIS EVENING AND INTO THE EARLY MORNING HOURS.
DISCUSSION:
A WARM FRONT WILL LIFT THROUGH THE OUTLOOK AREA LATE THIS
AFTERNOON AND INTO THE EARLY MORNING HOURS ON SATURDAY. AN
UPPER LEVEL DISTURBANCE WILL THEN MOVE ACROSS THE MIDWEST
ALLOWING SHOWERS AND THUNDERSTORMS TO DEVELOP AND LIKELY FORM
A CLUSTER OF THUNDERSTORMS THAT WILL MOVE ALONG THE FRONT.
THERE IS STILL SOME UNCERTAINTY AS TO THE SPECIFIC LOCATION OF
THE FRONTAL BOUNDARY AND OVERALL THUNDERSTORM COVERAGE...BUT
THE GREATEST THREAT APPEARS TO BE SOUTH AND WEST OF A
RENSSELAER TO ROCKFORD LINE.
PORTIONS OF THE KANKAKEE RIVER IN NORTHWEST INDIANA AND THE
ILLINOIS RIVER IN LA SALLE COUNTY WILL REMAIN IN FLOOD.
.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY.
THERE WILL BE PERIODIC CHANCES FOR SHOWERS AND THUNDERSTORMS
THROUGH THE WEEKEND AND INTO THE MIDDLE OF NEXT WEEK.
PORTIONS OF THE KANKAKEE RIVER IN NORTHWEST INDIANA AND THE
ILLINOIS RIVER IN LA SALLE COUNTY WILL REMAIN IN FLOOD. IN
ADDITION...THE POTENTIAL FOR HEAVY RAINFALL OVER THE NEXT SEVERAL
DAYS MAY RESULT IN FURTHER INCREASES IN STREAM FLOWS AND MAY
INCREASE THE POSSIBILITY OF FLOODING ALONG OTHER AREA RIVERS.
.SPOTTER INFORMATION STATEMENT...
SPOTTERS MAY BE NEEDED LATE TONIGHT AND INTO SATURDAY MORNING.
&&
COMPLETE FORECAST INFORMATION IS AVAILABLE ON THE NWS CHICAGO
WEBPAGE: WEATHER.GOV/CHICAGO
