THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH
550 IN EFFECT UNTIL 4 AM CDT /5 AM EDT/ MONDAY FOR THE FOLLOWING
AREAS

IN ILLINOIS THIS WATCH INCLUDES 18 COUNTIES

IN CENTRAL ILLINOIS

LIVINGSTON

IN EAST CENTRAL ILLINOIS

FORD IROQUOIS

IN NORTH CENTRAL ILLINOIS

BOONE DE KALB LA SALLE
LEE OGLE WINNEBAGO

IN NORTHEAST ILLINOIS

COOK DUPAGE GRUNDY
KANE KANKAKEE KENDALL
LAKE IL MCHENRY WILL

IN INDIANA THIS WATCH INCLUDES 5 COUNTIES

IN NORTHWEST INDIANA

BENTON JASPER LAKE IN
NEWTON PORTER

THIS INCLUDES THE CITIES OF ALGONQUIN, AURORA, BELVIDERE,
BOLINGBROOK, BOURBONNAIS, BUFFALO GROVE, BYRON, CAROL STREAM,
CHESTERTON, CHICAGO, COAL CITY, CRYSTAL LAKE, DEKALB, DEMOTTE,
DIXON, DOWNERS GROVE, DWIGHT, ELGIN, EVANSTON, FAIRBURY, FOWLER,
GARY, GIBSON CITY, GILMAN, GURNEE, HAMMOND, JOLIET, KANKAKEE,
KENTLAND, LA SALLE, LEMONT, LOMBARD, MARSEILLES, MCHENRY,
MENDOTA, MERRILLVILLE, MINOOKA, MOROCCO, MORRIS, MUNDELEIN,
NAPERVILLE, OAK LAWN, OREGON, ORLAND PARK, OSWEGO, OTTAWA,
OXFORD, PARK FOREST, PAXTON, PLANO, PONTIAC, PORTAGE, RENSSELAER,
ROCHELLE, ROCKFORD, ROSELAWN, SCHAUMBURG, STREATOR, SYCAMORE,
VALPARAISO, WATSEKA, WAUKEGAN, WHEATON, WILMINGTON, WOODSTOCK,
AND YORKVILLE.

WHAT: Flash flooding caused by excessive rainfall continues to be
possible.

WHERE: Portions of Illinois, including the following areas,
Central Cook, De Kalb, DuPage, Eastern Will, Grundy, Kane,
Kankakee, Kendall, Lake IL, McHenry, Northern Cook, Northern Will,
Southern Cook and Southern Will and northwest Indiana, including
the following areas, Jasper, Lake IN, Newton and Porter.

WHEN: Until 7 AM CDT Monday.

IMPACTS: Creeks and streams may rise out of their banks. Flooding
may occur in poor drainage and urban areas. Roads and streets may
be flooded.

ADDITIONAL DETAILS:
- Showers and thunderstorms are developing along a stalled surface
front. Atmospheric conditions are favorable for heavy rainfall
with localized rainfall rates exceeding 2 inches per hour late
this evening through the overnight. Slow storm motion and the
potential for multiple rounds of rainfall will increase the
threat for flooding in some areas. Portions of northeastern
Illinois received 1 to 3 inches of rainfall earlier today which
also increases the threat for additional flooding.
- http://www.weather.gov/safety/flood