FLUS43 KLOT 051857
HWOLOT
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
157 PM CDT FRI SEP 5 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-
157 PM CDT FRI SEP 5 2014 /257 PM EDT FRI SEP 5 2014/
THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH CENTRAL ILLINOIS...
NORTHEAST ILLINOIS AND NORTHWEST INDIANA.
.DAY ONE...THIS AFTERNOON AND TONIGHT.
WEATHER HAZARDS EXPECTED:
SCATTERED THUNDERSTORMS...SOME OF WHICH MAY PRODUCE:
TORRENTIAL DOWNPOURS AND POSSIBLE LOCALIZED FLASH FLOODING.
LOCALLY DAMAGING WINDS TO AROUND 60 MPH.
HAIL UP TO THE SIZE OF QUARTERS.
AND FREQUENT CLOUD TO GROUND LIGHTNING.
AREAS AFFECTED AND TIMING:
SCATTERED THUNDERSTORMS WILL DEVELOP THIS AFTERNOON ACROSS
NORTHERN ILLINOIS AND SPREAD SOUTH AND EASTWARD INTO AREAS SOUTH
OF INTERSTATE 80 AND INTO NORTHWEST INDIANA LATER THIS AFTERNOON
AND EARLY THIS EVENING. THE THREAT OF THUNDERSTORMS WILL LINGER
THROUGH TONIGHT...MAINLY SOUTH OF INTERSTATE 80.
DISCUSSION:
A SLOW MOVING COLD FRONT COMBINED WITH UPPER LEVEL DISTURBANCES
WILL RESULT IN INCREASING COVERAGE OF THUNDERSTORMS THIS AFTERNOON
INTO THIS EVENING. VERY UNSTABLE CONDITIONS AND MODERATE
WINDS ALOFT WILL ALLOW SOME OF THE THUNDERSTORMS TO BECOME SEVERE.
THE PRIMARY THREAT WILL BE DAMAGING WINDS WITH SOME POTENTIAL FOR
LARGE HAIL. IN ADDITION...THE VERY HUMID CONDITIONS WILL ALLOW THE
THUNDERSTORMS TO PRODUCE LOCALLY VERY HEAVY RAINFALL AND POSSIBLY
SOME LOCALIZED FLOODING.
.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY.
DANGEROUS SWIMMING CONDITIONS ARE POSSIBLE AT LAKE MICHIGAN
BEACHES...NAMELY ALONG THE INDIANA SHORE...ON SATURDAY.
THE WILL BE PERIODIC CHANCES FOR THUNDERSTORMS FROM MONDAY NIGHT
THROUGH WEDNESDAY NIGHT.
.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION WILL LIKELY BE NEEDED THIS AFTERNOON AND EVENING.
&&
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