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WWUS63 KLOT 181723
WCNLOT

WATCH COUNTY NOTIFICATION FOR WATCH 599
NATIONAL WEATHER SERVICE CHICAGO IL
1223 PM CDT MON AUG 18 2025

ILC007-031-037-043-063-089-093-097-099-103-111-141-197-201-182300-
/O.NEW.KLOT.SV.A.0599.250818T1723Z-250818T2300Z/

THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH
599 IN EFFECT UNTIL 6 PM CDT THIS EVENING FOR THE FOLLOWING AREAS

IN ILLINOIS THIS WATCH INCLUDES 14 COUNTIES

IN NORTH CENTRAL ILLINOIS

BOONE                 DE KALB               LA SALLE
LEE                   OGLE                  WINNEBAGO

IN NORTHEAST ILLINOIS

COOK                  DUPAGE                GRUNDY
KANE                  KENDALL               LAKE IL
MCHENRY               WILL

THIS INCLUDES THE CITIES OF ALGONQUIN, AURORA, BELVIDERE,
BOLINGBROOK, BUFFALO GROVE, BYRON, CAROL STREAM, CHICAGO,
COAL CITY, CRYSTAL LAKE, DEKALB, DIXON, DOWNERS GROVE, ELGIN,
EVANSTON, GURNEE, JOLIET, LA SALLE, LEMONT, LOMBARD, MARSEILLES,
MCHENRY, MENDOTA, MINOOKA, MORRIS, MUNDELEIN, NAPERVILLE,
OAK LAWN, OREGON, ORLAND PARK, OSWEGO, OTTAWA, PARK FOREST,
PLANO, ROCHELLE, ROCKFORD, SCHAUMBURG, STREATOR, SYCAMORE,
WAUKEGAN, WHEATON, WILMINGTON, WOODSTOCK, AND YORKVILLE.

$$

LMZ740>742-777-779-182300-
/O.NEW.KLOT.SV.A.0599.250818T1723Z-250818T2300Z/

THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH
599 IN EFFECT UNTIL 6 PM CDT THIS EVENING FOR THE FOLLOWING AREAS

THIS WATCH INCLUDES THE FOLLOWING ADJACENT COASTAL WATERS

WINTHROP HARBOR TO WILMETTE HARBOR IL
WILMETTE HARBOR TO NORTHERLY ISLAND IL
NORTHERLY ISLAND TO CALUMET HARBOR IL
LAKE MICHIGAN FROM WINTHROP HARBOR TO WILMETTE HARBOR IL 5NM
OFFSHORE TO MID LAKE
LAKE MICHIGAN FROM WILMETTE HARBOR IL TO MICHIGAN CITY IN 5NM
OFFSHORE TO MID LAKE

$$