FLUS43 KLOT 110943
HWOLOT
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
443 AM CDT THU AUG 11 2016
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-
443 AM CDT THU AUG 11 2016 /543 AM EDT THU AUG 11 2016/
THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH CENTRAL ILLINOIS...
NORTHEAST ILLINOIS AND NORTHWEST INDIANA.
.DAY ONE...TODAY AND TONIGHT.
WEATHER HAZARDS EXPECTED:
ELEVATED THUNDERSTORM RISK...WITH AN ASSOCIATED:
LIMITED HAIL RISK...UP TO ONE INCH SIZE.
LIMITED THUNDERSTORM WIND DAMAGE RISK...UP TO 60 MPH.
LIMITED FLOODING RISK.
ELEVATED EXCESSIVE HEAT RISK.
DISCUSSION:
TEMPERATURES WILL RISE INTO THE LOWER 90S IN MANY LOCATIONS
THIS AFTERNOON...WHICH COMBINED WITH HIGH HUMIDITY LEVELS
WILL PRODUCE PEAK AFTERNOON HEAT INDEX VALUES OF 100 TO 105
DEGREES.
ISOLATED THUNDERSTORMS ARE POSSIBLE THIS AFTERNOON ACROSS
PARTS OF NORTHWEST AND NORTH CENTRAL ILLINOIS...AND ACROSS
SOUTHEAST PORTIONS OF THE OUTLOOK AREA SOUTH OF A PONTIAC TO
VALPARAISO LINE. MORE ORGANIZED STORMS ARE POSSIBLE AFTER
MIDNIGHT TONIGHT. THUNDERSTORMS TONIGHT MAY BE STRONG TO
SEVERE OVER NORTH CENTRAL ILLINOIS...WITH ISOLATED LARGE
HAIL OR DAMAGING WIND GUSTS. LOCALLY HEAVY RAINFALL WILL BE
POSSIBLE WITH STORMS TONIGHT ACROSS THE AREA.
.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY.
FRIDAY...
LIMITED FLOODING RISK.
LIMITED SEVERE THUNDERSTORM RISK.
LIMITED EXCESSIVE HEAT RISK.
SATURDAY...
LIMITED FLOODING RISK.
LIMITED THUNDERSTORM RISK.
TUESDAY AND WEDNESDAY...
LIMITED THUNDERSTORM RISK.
DISCUSSION:
A SLOW MOVING COLD FRONT WILL MOVE ACROSS THE AREA FRIDAY AND
FRIDAY NIGHT. THUNDERSTORMS WILL LIKELY OCCUR ALONG AND AHEAD
OF THE FRONT. LOCALLY HEAVY RAINFALL AMOUNTS IN EXCESS OF 1.5
INCHES ARE POSSIBLE WITH THESE STORMS. A FEW STORMS COULD
PRODUCE ISOLATED GUSTY WINDS OR HAIL ACROSS FAR EAST CENTRAL
ILLINOIS AND NORTHWEST INDIANA FRIDAY AFTERNOON.
.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION WILL NOT BE NECESSARY THROUGH TONIGHT.
GENERAL STORM MOTION OF THE DAY:
MOVING EAST AT 15 TO 20 MPH.
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