FLUS43 KLOT 122043
HWOLOT
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
343 PM CDT SAT JUL 12 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-
343 PM CDT SAT JUL 12 2014 /443 PM EDT SAT JUL 12 2014/
THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH CENTRAL ILLINOIS...
NORTHEAST ILLINOIS AND NORTHWEST INDIANA.
.DAY ONE...TONIGHT.
WEATHER HAZARDS EXPECTED:
THUNDERSTORMS...SOME COULD PRODUCE:
TORRENTIAL DOWNPOURS LEADING TO LOCALIZED FLASH FLOODING.
DAMAGING WIND GUSTS IN EXCESS OF 60 MPH.
FREQUENT CLOUD TO GROUND LIGHTNING.
AREAS AFFECTED AND TIMING:
THUNDERSTORMS ARE EXPECTED TO DEVELOP THIS EVENING NORTHWEST OF
AN AMBOY TO MCHENRY LINE...THEN STEADILY SPREAD SOUTHEAST
THROUGH ALL OF NORTHERN ILLINOIS AND NORTHWEST INDIANA TONIGHT.
DISCUSSION:
WARM AND VERY MOIST AIR WILL CONTINUE TO LIFT NORTH ACROSS
NORTHERN ILLINOIS AND NORTHWEST INDIANA WITH INSTABILITY
STEADILY INCREASING INTO THIS EVENING. A FRONTAL BOUNDARY WILL
BE A FOCUS FOR THUNDERSTORM DEVELOPMENT THIS AFTERNOON OVER
WISCONSIN AND IOWA AND THAT LINE OF STORMS WILL SLOWLY SINK
SOUTHEAST THROUGH THE WARNING AREA. HEAVY RAIN WILL BE THE MAIN
THREAT AND FLASH FLOODING AND LOCALIZED FLOODING WILL BE VERY
POSSIBLE. SEVERE WINDS IN EXCESS OF 60 MPH ARE ALSO POSSIBLE
ALONG THE LEADING EDGE OF THE STORMS.
.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY.
THERE WILL BE A SLIGHT CHANCE TO CHANCE FOR THUNDERSTORMS SUNDAY
AFTERNOON THROUGH SUNDAY NIGHT. THEN THERE IS ANOTHER CHANCE FOR
STORMS MONDAY AFTERNOON MAINLY SOUTH OF DIXON TO CHICAGO.
.SPOTTER INFORMATION STATEMENT...
SPOTTERS WILL LIKELY BE NEEDED THROUGH TONIGHT AND SPOTTERS ARE
ENCOURAGED TO REPORT HEAVY RAINFALL TOTALS.
&&
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