SEVERE THUNDERSTORM WATCH OUTLINE UPDATE FOR WS 394 NWS STORM PREDICTION CENTER NORMAN OK 855 AM CDT SUN MAY 29 2011 SEVERE THUNDERSTORM WATCH 394 IS IN EFFECT UNTIL 400 PM CDT FOR THE FOLLOWING LOCATIONS THE ILLINOIS COUNTIES INCLUDED ARE BOONE BUREAU CARROLL COOK DE KALB DUPAGE FORD FULTON GRUNDY HANCOCK HENDERSON HENRY IROQUOIS JO DAVIESS KANE KANKAKEE KENDALL KNOX LAKE LA SALLE LEE LIVINGSTON MARSHALL MCDONOUGH MCHENRY MCLEAN MERCER OGLE PEORIA PUTNAM ROCK ISLAND STARK STEPHENSON TAZEWELL WARREN WHITESIDE WILL WINNEBAGO WOODFORD $$
Hazardous Weather Outlook
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
518 AM CDT SUN MAY 29 2011
ILZ003>006-008-010>014-019>023-032-033-039-INZ001-002-010-011-019-
301030-
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-
518 AM CDT SUN MAY 29 2011 /618 AM EDT SUN MAY 29 2011/
THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH CENTRAL ILLINOIS...
NORTHEAST ILLINOIS AND NORTHWEST INDIANA.
.DAY ONE...TODAY AND TONIGHT.
WEATHER HAZARDS EXPECTED:
THUNDERSTORMS...THE STRONGEST MAY PRODUCE:
DAMAGING WINDS IN EXCESS OF 70 MPH.
LOCALLY HEAVY RAINFALL...WHICH COULD RESULT IN FLOODING.
AREAS AFFECTED AND TIMING:
THUNDERSTORMS ARE EXPECTED TO MOVE INTO THE WESTERN PORTIONS OF
THE OUTLOOK AREA LATER THIS MORNING AND TRACK EASTWARD THROUGH
THE LATE MORNING AND AFTERNOON.
DISCUSSION:
THUNDERSTORMS MAY DEVELOP INTO AN ORGANIZED SOLID LINE WITH THE
POTENTIAL TO PRODUCE STRONG DAMAGING WINDS. ALSO...WITH
INCREASING DEEP LAYER MOISTURE...LOCALLY HEAVY RAINFALL IS
POSSIBLE WITH THESE STORMS.
PORTIONS OF THE KANKAKEE AND ILLINOIS RIVERS WILL REMAIN IN
FLOOD...WITH ELEVATED STREAM FLOW ON MANY OTHER RIVERS AND
STREAMS. LOCALLY HEAVY RAINFALL TODAY AND TONIGHT WILL LIKELY
LEAD TO ADDITIONAL RISES ON AREA RIVERS AND STREAMS.
.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY.
THE WARMEST WEATHER OF THE SPRING IS EXPECTED ON MONDAY WITH
TEMPERATURES CLIMBING INTO THE LOW 90S ACROSS MUCH OF THE AREA.
THE HEAT WILL BE ACCOMPANIED BY INCREASING HUMIDITY...LEADING TO
HEAT INDEX VALUES IN THE MIDDLE OR UPPER 90S.
THERE WILL BE PERIODIC CHANCES OF THUNDERSTORMS AGAIN BY THE
MIDDLE AND END OF THE WEEK.
.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION WILL NOT BE NECESSARY THROUGH TONIGHT.
&&
COMPLETE FORECAST INFORMATION IS AVAILABLE ON THE NWS CHICAGO
WEBPAGE: WEATHER.GOV/CHICAGO
Convective Outlook/Tornado Probability valid 8AM – 7PM Sunday, May 29, 2011.
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