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

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
955 AM CDT FRI JUL 13 2012

ILZ003>006-008-010>014-019>023-032-033-039-INZ001-002-010-011-019-
141500-
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-
955 AM CDT FRI JUL 13 2012 /1055 AM EDT FRI JUL 13 2012/

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

.DAY ONE...TODAY AND TONIGHT.

WEATHER HAZARDS EXPECTED:

THUNDERSTORMS...THE STRONGEST MAY PRODUCE:
TORRENTIAL DOWNPOURS.
CLOUD TO GROUND LIGHTNING.
AND POSSIBLY ISOLATED WIND GUSTS OVER 60 MPH.

AREAS AFFECTED AND TIMING:

SCATTERED THUNDERSTORMS ARE POSSIBLE OVER NORTH CENTRAL
ILLINOIS LATE THIS MORNING...WITH THE THREAT SPREADING EAST INTO
THE CHICAGO METRO AREA SOUTHWEST TO PONTIAC THIS AFTERNOON AND
ACROSS THE ENTIRE REGION TONIGHT.

DISCUSSION:

INCREASINGLY UNSTABLE CONDITIONS COMBINED WITH A SLOW MOVING
UPPER LEVEL DISTURBANCE APPROACHING THE REGION FROM THE WEST
WILL RESULT IN SCATTERED THUNDERSTORMS OVERSPREADING THE REGION
FROM THE WEST TODAY...AND POSSIBLY CONTINUING INTO TONIGHT.
WIDESPREAD ORGANIZED SEVERE WEATHER IS UNLIKELY...HOWEVER THERE
IS A CHANCE FOR VERY LOCALIZED DAMAGING WINDS THIS AFTERNOON
INTO EARLY THIS EVENING.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY.

THERE IS A CHANCE OF SCATTERED THUNDERSTORMS SATURDAY AND
SATURDAY NIGHT...WITH VERY LOCALIZED DAMAGING WINDS POSSIBLE WITH
THE MOST INTENSE STORMS.

HEAT INDICES OVER 100 DEGREES ARE POSSIBLE SUNDAY THROUGH
TUESDAY.

THERE IS ANOTHER THREAT OF THUNDERSTORMS TUESDAY NIGHT INTO
WEDNESDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NECESSARY THROUGH TONIGHT...HOWEVER
SPOTTERS SHOULD MONITOR CONDITIONS THIS AFTERNOON AND EVENING AS
AN ISOLATED SEVERE STORM IS POSSIBLE.

&&

COMPLETE FORECAST INFORMATION IS AVAILABLE ON THE NWS CHICAGO
WEBPAGE: WEATHER.GOV/CHICAGO