FLUS43 KLOT 302000
HWOLOT
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
300 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-
300 PM CDT SAT AUG 30 2014 /400 PM EDT SAT AUG 30 2014/
THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH CENTRAL ILLINOIS...
NORTHEAST ILLINOIS AND NORTHWEST INDIANA.
.DAY ONE...THIS AFTERNOON AND 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:
ISOLATED TO SCATTERED THUNDERSTORMS ARE POSSIBLE NORTHWEST OF
INTERSTATE 55 THROUGH LATE THIS AFTERNOON. AREAS ALONG AND EAST
OF INTERSTATE 55 WILL SEE MORE WIDESPREAD THUNDERSTORM COVERAGE
THROUGH TONIGHT.
DISCUSSION:
AN UPPER LEVEL WAVE IS OVER WISCONSIN AND CENTRAL IOWA WHILE A
COLD FRONT STRETCHES FROM NORTHEAST WISCONSIN THROUGH EASTERN
IOWA. THE OTHER FOCUS FOR STORMS IS A CONVERGENCE BOUNDARY
STRETCHING FROM VALPO THOUGH PONTIAC. INSTABILITY IS MAXIMIZED
ALONG 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. FLASH FLOODING IS POSSIBLE PRIMARILY SOUTHEAST OF
INTERSTATE 55.
.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 THROUGH THIS EVENING ALONG AND EAST OF
INTERSTATE 57.
&&
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