Monday, July 7, 2014

Hazardous Weather Outlook for Mchenry Co., IL

FLUS43 KLOT 072051
HWOLOT

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
351 PM CDT MON JUL 7 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-
351 PM CDT MON JUL 7 2014 /451 PM EDT MON JUL 7 2014/

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH CENTRAL ILLINOIS...
NORTHEAST ILLINOIS AND NORTHWEST INDIANA.

.DAY ONE...THIS EVENING AND TONIGHT.

WEATHER HAZARDS EXPECTED:

THUNDERSTORMS...WHICH MAY PRODUCE:
OCCASIONAL CLOUD TO GROUND LIGHTNING.
TORRENTIAL DOWNPOURS.
A FEW STRONG WIND GUSTS.

AREAS AFFECTED AND TIMING:

THUNDERSTORMS WILL RETURN LATE TONIGHT ALONG AND WEST
OF A ROCKFORD TO LASALLE LINE...THEN OVERSPREAD THE ENTIRE
AREA OVERNIGHT THROUGH EARLY TUESDAY MORNING.

DISCUSSION:

A WEATHER DISTURBANCE IS EXPECTED TO QUICKLY APPROACH THE
AREA LATE TONIGHT...WITH A SECOND ASSOCIATED SURFACE COLD
FRONT LIKELY TO MOVE ACROSS THE AREA BY EARLY TUESDAY MORNING.
SHOWERS AND THUNDERSTORMS COULD DEVELOP AHEAD OF THIS COLD
FRONT AND IMPACT AT LEAST PORTIONS OF THE AREA LATE TONIGHT
INTO EARLY TUESDAY MORNING. IT CURRENTLY APPEARS
THE MAIN THREAT WITH THESE STORMS WILL BE LIGHTNING ALONG WITH
A BRIEF PERIOD OF HEAVY RAINFALL. THE THREAT FOR SEVERE WEATHER
WITH THIS ACTIVITY APPEARS LOW ACROSS MUCH OF NORTHERN ILLINOIS
AND NORTHWESTERN INDIANA. THE BETTER THREAT FOR SEVERE STORMS
LOOKS TO REMAIN WEST OF A ROCKFORD TO LASALLE LINE AND SOUTH OF
A LASALLE TO WATSEKA LINE.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY.

THERE WILL CONTINUE TO BE A CHANCE FOR THUNDERSTORMS TUESDAY.

ADDITIONAL PERIODS OF SHOWERS AND THUNDERSTORMS ARE POSSIBLE
FRIDAY THROUGH SUNDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS UNLIKELY THROUGH TONIGHT.

&&

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