Saturday, August 30, 2014

Hazardous Weather Outlook for Mchenry Co., IL

FLUS43 KLOT 310051 AAA
HWOLOT

HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
751 PM CDT SAT AUG 30 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-
751 PM CDT SAT AUG 30 2014 /851 PM EDT SAT AUG 30 2014/

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

.DAY ONE...TONIGHT.

WEATHER HAZARDS EXPECTED:

THUNDERSTORMS...SOME OF WHICH MAY PRODUCE:
ISOLATED WIND GUSTS TO 50 MPH.
TORRENTIAL DOWNPOURS.
CLOUD TO GROUND LIGHTNING.

AREAS AFFECTED AND TIMING:

SCATTERED THUNDERSTORMS ARE EXPECTED THIS EVENING ALONG AND EAST
OF INTERSTATE 55 AND GENERALLY SOUTH OF INTERSTATE 80.

DISCUSSION:

AN UPPER LEVEL WAVE IS OVER WISCONSIN AND FAR NW ILLINOIS WHILE A
COLD FRONT STRETCHES FROM NORTHEAST WISCONSIN THROUGH NORTH
CENTRAL ILLINOIS INTO CENTRAL MISSOURI. INSTABILITY IS MAXIMIZED
AHEAD OF THIS BOUNDARY ALONG WITH MOISTURE CONTENT. A STORM OR TWO MAY
PULSE UP TO SEVERE LIMITS AND PRODUCE SEVERE WIND GUSTS...BUT IN
GENERAL EXPECTING STORMS TO PRODUCE WIND GUSTS UP TO 50 MPH. THE
OTHER CONCERN IS HIGH MOISTURE CONTENT LEADING TO TORRENTIAL
DOWNPOURS. LOCALIZED FLOODING IS POSSIBLE PRIMARILY SOUTHEAST OF
INTERSTATE 55 ALONG THE INTERSTATE 57 CORRIDOR IN FORD AND
IROQUOIS COUNTIES.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY.

THERE IS A GOOD CHANCE FOR THUNDERSTORMS MONDAY INTO EARLY
TUESDAY. SOME OF THESE STORMS COULD BE SEVERE...ESPECIALLY ON
MONDAY. THESE STORMS WILL ALSO BE CAPABLE OF PRODUCING VERY HEAVY
RAINFALL...WHICH COULD LEAD TO LOCALIZED FLASH FLOODING.

THERE WILL BE ADDITIONAL SLIGHT CHANCES FOR THUNDERSTORMS
WEDNESDAY NIGHT AND THURSDAY...WITH A BETTER CHANCE OF
THUNDERSTORMS ON FRIDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTERS MAY BE NEEDED THIS EVENING ALONG AND EAST OF INTERSTATE 57.

&&

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