THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
COOK COUNTY IN NORTHEAST ILLINOIS...
DUPAGE COUNTY IN NORTHEAST ILLINOIS...
FORD COUNTY IN EAST CENTRAL ILLINOIS...
EASTERN GRUNDY COUNTY IN NORTHEAST ILLINOIS...
IROQUOIS COUNTY IN EAST CENTRAL ILLINOIS...
EASTERN KANE COUNTY IN NORTHEAST ILLINOIS...
KANKAKEE COUNTY IN NORTHEAST ILLINOIS...
EASTERN KENDALL COUNTY IN NORTHEAST ILLINOIS...
SOUTHERN LAKE COUNTY IN NORTHEAST ILLINOIS...
EASTERN LIVINGSTON COUNTY IN CENTRAL ILLINOIS...
WILL COUNTY IN NORTHEAST ILLINOIS...
WESTERN BENTON COUNTY IN NORTHWEST INDIANA...
JASPER COUNTY IN NORTHWEST INDIANA...
LAKE COUNTY IN NORTHWEST INDIANA...
NEWTON COUNTY IN NORTHWEST INDIANA...
PORTER COUNTY IN NORTHWEST INDIANA...

* UNTIL 200 PM CDT/300 PM EDT/

* AT 1237 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DESTRUCTIVE HURRICANE FORCE WINDS IN EXCESS OF 80 MPH.
THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM GENOA TO
WILMINGTON TO GARDNER TO 6 MILES SOUTHWEST OF FAIRBURY...AND MOVING
EAST AT 60 MPH.

* LOCATIONS IMPACTED INCLUDE...
PLAINFIELD...AURORA...JOLIET...BATAVIA...GENEVA...INGALLS PARK...
ST. CHARLES...GIBSON CITY...ROMEOVILLE...LOCKPORT...NAPERVILLE...
NEW LENOX...DUPAGE AIRPORT...WEST CHICAGO...BOLINGBROOK...ELGIN...
SLEEPY HOLLOW...PIPER CITY...LISLE AND CARPENTERSVILLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...LARGE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR
PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME
OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO
AREAS WHERE WATER COVERS THE ROAD.

THESE STORMS HAVE A HISTORY OF PRODUCING DESTRUCTIVE WINDS TO 75
MPH. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM
WINDOWS! THE DAMAGING WIND THREAT IS ESPECIALLY HIGH ALONG AND SOUTH
OF INTERSTATE 80.

INTENSE SQUALL LINES CAN OCCASIONALLY PRODUCE BRIEF TORNADOES IN
ADDITION TO WIDESPREAD SIGNIFICANT WIND DAMAGE. ALTHOUGH NOT
IMMEDIATELY LIKELY...FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON
THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. THIS STORM HAS THE
POTENTIAL TO CAUSE SERIOUS INJURY AND SIGNIFICANT DAMAGE TO PROPERTY.