FLUS43 KLOT 200932
HWOLOT
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
432 AM CDT WED AUG 20 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-
432 AM CDT WED AUG 20 2014 /532 AM EDT WED AUG 20 2014/
THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH CENTRAL ILLINOIS...
NORTHEAST ILLINOIS AND NORTHWEST INDIANA.
.DAY ONE...TODAY AND TONIGHT.
WEATHER HAZARDS EXPECTED:
SCATTERED THUNDERSTORMS...SOME COULD PRODUCE:
WIND GUSTS TO 50 MPH.
FREQUENT CLOUD TO GROUND LIGHTNING.
LOCALLY HEAVY RAINFALL.
AREAS AFFECTED AND TIMING:
A FRONTAL BOUNDARY WILL BEGIN TO LIFT NORTH THIS AFTERNOON
WITH THUNDERSTORMS BEGINNING TO DEVELOP EARLY THIS EVENING
ALONG A LASALLE TO FOWLER LINE...THEN EXPANDING NORTH THIS
EVENING WITH ADDITIONAL THUNDERSTORMS ACROSS THE ENTIRE
OUTLOOK AREA TONIGHT.
DISCUSSION:
A QUASI-STATIONARY FRONTAL BOUNDARY WAS LOCATED ALONG A
NORTHEAST MISSOURI TO CENTRAL ILLINOIS LINE. THIS BOUNDARY
WILL BEGIN TO LIFT NORTH AS A WARM FRONT THIS AFTERNOON
WITH LOW LEVEL MOISTURE POOLING ALONG THIS FRONT.
THUNDERSTORMS ARE EXPECTED TO STEADILY BUILD IN COVERAGE
LATE THIS AFTERNOON THROUGH THIS EVENING...STEADILY LIFTING
NORTH ACROSS NORTHERN ILLINOIS AND NORTHWEST INDIANA. WITH
MOISTURE RICH AIR LIFTING NORTH WITH THE BOUNDARY...SOME
OF THE THUNDERSTORMS COULD EASILY PRODUCE BRIEF HEAVY
DOWNPOURS WHICH COULD LEAD TO LOCALIZED FLOODING TONIGHT.
IN ADDITION A FEW OF THE STRONGEST THUNDERSTORMS MAY BE
CAPABLE OF PRODUCING WIND GUSTS UP TO 50 MPH.
.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.
THERE WILL CONTINUE TO BE PERIODIC CHANCES FOR THUNDERSTORMS
THURSDAY THROUGH TUESDAY. THE BEST CHANCE FOR STORMS WILL BE
THURSDAY AND FRIDAY. HEAVY RAINFALL COULD OCCUR WITH ANY
THUNDERSTORMS THAT AFFECT THE AREA.
.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION WILL NOT BE NECESSARY THROUGH TONIGHT.
&&
http://goo.gl/07coh5
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