FLUS43 KLOT 180925
HWOLOT
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
425 AM CDT WED JUN 18 2014
WINNEBAGO-BOONE-MCHENRY-LAKE ILLINOIS-OGLE-LEE-DE KALB-KANE-
DUPAGE-COOK-LA SALLE-KENDALL-GRUNDY-WILL-KANKAKEE-LIVINGSTON-
IROQUOIS-FORD-LAKE INDIANA-PORTER-NEWTON-JASPER-BENTON-
425 AM CDT WED JUN 18 2014 /525 AM EDT WED JUN 18 2014/
THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH CENTRAL ILLINOIS...
NORTHEAST ILLINOIS AND NORTHWEST INDIANA.
.DAY ONE...TODAY AND TONIGHT.
WEATHER HAZARDS EXPECTED:
THUNDERSTORMS WHICH MAY PRODUCE:
DAMAGING WIND GUSTS IN EXCESS OF 60 MPH.
TORRENTIAL DOWNPOURS AND ISOLATED FLASH FLOODING.
HAIL.
AREAS AFFECTED AND TIMING:
A COMPLEX OF THUNDERSTORMS MOVING SOUTHEASTWARD ACROSS NORTHERN
IOWA EARLY THIS MORNING IS EXPECTED TO TRACK INTO THE OUTLOOK
AREA LATE THIS MORNING THROUGH MIDDAY. THERE IS UNCERTAINTY AS
TO HOW WELL THIS COMPLEX WILL MAINTAIN ITSELF AND IT MAY BE
DECAYING AS IT ARRIVES. IF IT DOES HOLD TOGETHER THEN STRONG
WIND GUSTS AND HEAVY DOWNPOURS ARE LIKELY. ADDITIONAL
THUNDERSTORMS ARE THEN EXPECTED THIS EVENING AND TONIGHT AS A
FRONTAL BOUNDARY MOVES BACK INTO THE AREA.
DISCUSSION:
A WARM FRONTAL BOUNDARY IS POSITIONED TO THE NORTH OF THE
OUTLOOK AREA THIS MORNING. A COMPLEX OF THUNDERSTORMS IS MOVING
SOUTHEASTWARD ACROSS NORTHERN IOWA WITH SOME QUESTION AS TO HOW
WELL IT WILL BE MAINTAINED THROUGH THE MORNING. IF IT CAN HOLD
TOGETHER THEN IT WOULD ARRIVE IN WESTERN PORTIONS OF THE OUTLOOK
AREA BY MID MORNING AND EXIT TO THE EAST DURING THE EARLY
AFTERNOON. THE WARM FRONTAL BOUNDARY IS THEN EXPECTED TO MOVE
BACK INTO THE AREA THIS EVENING AND TONIGHT AND BECOME THE FOCUS
FOR ADDITIONAL SHOWERS AND THUNDERSTORMS. AFTERNOON STORMS ARE
ALSO POSSIBLE DEPENDING ON THE EVOLUTION OF THE MORNING COMPLEX.
HEAVY RAIN IS POSSIBLE...ESPECIALLY IF STORMS CAN ORGANIZE THIS
EVENING OR TONIGHT. OVERALL FORECAST CONFIDENCE IN THE DETAILS
IS LIMITED SO BE SURE TO MONITOR FOR UPDATES.
.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.
THUNDERSTORMS WILL CONTINUE TO BE POSSIBLE AT TIMES THURSDAY
THROUGH TUESDAY.
.SPOTTER INFORMATION STATEMENT...
SPOTTERS MAY BE NEEDED THROUGH TONIGHT.
&&
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