|
Home Return to list Severe Thunderstorm Watch 0546 Issued by the Chicago Forecast Office
Action: New Issued At: 2026-08-09 09:47:15 189 WWUS63 KLOT 091446 WCNLOT WATCH COUNTY NOTIFICATION FOR WATCH 546 NATIONAL WEATHER SERVICE CHICAGO IL 946 AM CDT SUN AUG 9 2026 ILC097-111-091900- /O.NEW.KLOT.SV.A.0546.260809T1446Z-260809T1900Z/ THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH 546 IN EFFECT UNTIL 2 PM CDT THIS AFTERNOON FOR THE FOLLOWING AREAS IN ILLINOIS THIS WATCH INCLUDES 2 COUNTIES IN NORTHEAST ILLINOIS LAKE IL MCHENRY THIS INCLUDES THE CITIES OF ALGONQUIN, BUFFALO GROVE, CRYSTAL LAKE, GURNEE, MCHENRY, MUNDELEIN, WAUKEGAN, AND WOODSTOCK. $$ LMZ740-777-091900- /O.NEW.KLOT.SV.A.0546.260809T1446Z-260809T1900Z/ THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH 546 IN EFFECT UNTIL 2 PM CDT THIS AFTERNOON FOR THE FOLLOWING AREAS THIS WATCH INCLUDES THE FOLLOWING ADJACENT COASTAL WATERS WINTHROP HARBOR TO WILMETTE HARBOR IL LAKE MICHIGAN FROM WINTHROP HARBOR TO WILMETTE HARBOR IL 5NM OFFSHORE TO MID LAKE $$ Action: New Issued At: 2026-08-09 09:47:15 189 WWUS63 KLOT 091446 WCNLOT WATCH COUNTY NOTIFICATION FOR WATCH 546 NATIONAL WEATHER SERVICE CHICAGO IL 946 AM CDT SUN AUG 9 2026 ILC097-111-091900- /O.NEW.KLOT.SV.A.0546.260809T1446Z-260809T1900Z/ THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH 546 IN EFFECT UNTIL 2 PM CDT THIS AFTERNOON FOR THE FOLLOWING AREAS IN ILLINOIS THIS WATCH INCLUDES 2 COUNTIES IN NORTHEAST ILLINOIS LAKE IL MCHENRY THIS INCLUDES THE CITIES OF ALGONQUIN, BUFFALO GROVE, CRYSTAL LAKE, GURNEE, MCHENRY, MUNDELEIN, WAUKEGAN, AND WOODSTOCK. $$ LMZ740-777-091900- /O.NEW.KLOT.SV.A.0546.260809T1446Z-260809T1900Z/ THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH 546 IN EFFECT UNTIL 2 PM CDT THIS AFTERNOON FOR THE FOLLOWING AREAS THIS WATCH INCLUDES THE FOLLOWING ADJACENT COASTAL WATERS WINTHROP HARBOR TO WILMETTE HARBOR IL LAKE MICHIGAN FROM WINTHROP HARBOR TO WILMETTE HARBOR IL 5NM OFFSHORE TO MID LAKE $$ Action: Continued Issued At: 2026-08-09 13:08:51 832 WWUS63 KLOT 091808 WCNLOT WATCH COUNTY NOTIFICATION FOR WATCH 546 NATIONAL WEATHER SERVICE CHICAGO IL 108 PM CDT SUN AUG 9 2026 ILC111-091915- /O.CAN.KLOT.SV.A.0546.000000T0000Z-260809T1900Z/ THE NATIONAL WEATHER SERVICE HAS CANCELLED SEVERE THUNDERSTORM WATCH 546 FOR THE FOLLOWING AREAS IN ILLINOIS THIS CANCELS 1 COUNTY IN NORTHEAST ILLINOIS MCHENRY THIS INCLUDES THE CITIES OF ALGONQUIN, CRYSTAL LAKE, MCHENRY, AND WOODSTOCK. $$ ILC031-043-091915- /O.EXA.KLOT.SV.A.0546.000000T0000Z-260809T1900Z/ THE NATIONAL WEATHER SERVICE HAS EXTENDED SEVERE THUNDERSTORM WATCH 546 TO INCLUDE THE FOLLOWING AREAS UNTIL 2 PM CDT THIS AFTERNOON IN ILLINOIS THIS WATCH INCLUDES 2 COUNTIES IN NORTHEAST ILLINOIS COOK DUPAGE THIS INCLUDES THE CITIES OF CAROL STREAM, CHICAGO, DOWNERS GROVE, EVANSTON, LEMONT, LOMBARD, NAPERVILLE, OAK LAWN, ORLAND PARK, PARK FOREST, SCHAUMBURG, AND WHEATON. $$ LMZ741-742-091915- /O.EXA.KLOT.SV.A.0546.000000T0000Z-260809T1900Z/ THE NATIONAL WEATHER SERVICE HAS EXTENDED SEVERE THUNDERSTORM WATCH 546 TO INCLUDE THE FOLLOWING AREAS UNTIL 2 PM CDT THIS AFTERNOON THIS WATCH INCLUDES THE FOLLOWING ADJACENT COASTAL WATERS WILMETTE HARBOR TO NORTHERLY ISLAND IL NORTHERLY ISLAND TO CALUMET HARBOR IL $$ ILC097-091915- /O.CON.KLOT.SV.A.0546.000000T0000Z-260809T1900Z/ SEVERE THUNDERSTORM WATCH 546 REMAINS VALID UNTIL 2 PM CDT THIS AFTERNOON FOR THE FOLLOWING AREAS IN ILLINOIS THIS WATCH INCLUDES 1 COUNTY IN NORTHEAST ILLINOIS LAKE IL THIS INCLUDES THE CITIES OF BUFFALO GROVE, GURNEE, MUNDELEIN, AND WAUKEGAN. $$ LMZ740-777-091915- /O.CON.KLOT.SV.A.0546.000000T0000Z-260809T1900Z/ SEVERE THUNDERSTORM WATCH 546 REMAINS VALID UNTIL 2 PM CDT THIS AFTERNOON FOR THE FOLLOWING AREAS THIS WATCH INCLUDES THE FOLLOWING ADJACENT COASTAL WATERS WINTHROP HARBOR TO WILMETTE HARBOR IL LAKE MICHIGAN FROM WINTHROP HARBOR TO WILMETTE HARBOR IL 5NM OFFSHORE TO MID LAKE $$ Action: Continued Issued At: 2026-08-09 13:08:51 832 WWUS63 KLOT 091808 WCNLOT WATCH COUNTY NOTIFICATION FOR WATCH 546 NATIONAL WEATHER SERVICE CHICAGO IL 108 PM CDT SUN AUG 9 2026 ILC111-091915- /O.CAN.KLOT.SV.A.0546.000000T0000Z-260809T1900Z/ THE NATIONAL WEATHER SERVICE HAS CANCELLED SEVERE THUNDERSTORM WATCH 546 FOR THE FOLLOWING AREAS IN ILLINOIS THIS CANCELS 1 COUNTY IN NORTHEAST ILLINOIS MCHENRY THIS INCLUDES THE CITIES OF ALGONQUIN, CRYSTAL LAKE, MCHENRY, AND WOODSTOCK. $$ ILC031-043-091915- /O.EXA.KLOT.SV.A.0546.000000T0000Z-260809T1900Z/ THE NATIONAL WEATHER SERVICE HAS EXTENDED SEVERE THUNDERSTORM WATCH 546 TO INCLUDE THE FOLLOWING AREAS UNTIL 2 PM CDT THIS AFTERNOON IN ILLINOIS THIS WATCH INCLUDES 2 COUNTIES IN NORTHEAST ILLINOIS COOK DUPAGE THIS INCLUDES THE CITIES OF CAROL STREAM, CHICAGO, DOWNERS GROVE, EVANSTON, LEMONT, LOMBARD, NAPERVILLE, OAK LAWN, ORLAND PARK, PARK FOREST, SCHAUMBURG, AND WHEATON. $$ LMZ741-742-091915- /O.EXA.KLOT.SV.A.0546.000000T0000Z-260809T1900Z/ THE NATIONAL WEATHER SERVICE HAS EXTENDED SEVERE THUNDERSTORM WATCH 546 TO INCLUDE THE FOLLOWING AREAS UNTIL 2 PM CDT THIS AFTERNOON THIS WATCH INCLUDES THE FOLLOWING ADJACENT COASTAL WATERS WILMETTE HARBOR TO NORTHERLY ISLAND IL NORTHERLY ISLAND TO CALUMET HARBOR IL $$ ILC097-091915- /O.CON.KLOT.SV.A.0546.000000T0000Z-260809T1900Z/ SEVERE THUNDERSTORM WATCH 546 REMAINS VALID UNTIL 2 PM CDT THIS AFTERNOON FOR THE FOLLOWING AREAS IN ILLINOIS THIS WATCH INCLUDES 1 COUNTY IN NORTHEAST ILLINOIS LAKE IL THIS INCLUDES THE CITIES OF BUFFALO GROVE, GURNEE, MUNDELEIN, AND WAUKEGAN. $$ LMZ740-777-091915- /O.CON.KLOT.SV.A.0546.000000T0000Z-260809T1900Z/ SEVERE THUNDERSTORM WATCH 546 REMAINS VALID UNTIL 2 PM CDT THIS AFTERNOON FOR THE FOLLOWING AREAS THIS WATCH INCLUDES THE FOLLOWING ADJACENT COASTAL WATERS WINTHROP HARBOR TO WILMETTE HARBOR IL LAKE MICHIGAN FROM WINTHROP HARBOR TO WILMETTE HARBOR IL 5NM OFFSHORE TO MID LAKE $$ Action: Area Extended Issued At: 2026-08-09 13:08:51 832 WWUS63 KLOT 091808 WCNLOT WATCH COUNTY NOTIFICATION FOR WATCH 546 NATIONAL WEATHER SERVICE CHICAGO IL 108 PM CDT SUN AUG 9 2026 ILC111-091915- /O.CAN.KLOT.SV.A.0546.000000T0000Z-260809T1900Z/ THE NATIONAL WEATHER SERVICE HAS CANCELLED SEVERE THUNDERSTORM WATCH 546 FOR THE FOLLOWING AREAS IN ILLINOIS THIS CANCELS 1 COUNTY IN NORTHEAST ILLINOIS MCHENRY THIS INCLUDES THE CITIES OF ALGONQUIN, CRYSTAL LAKE, MCHENRY, AND WOODSTOCK. $$ ILC031-043-091915- /O.EXA.KLOT.SV.A.0546.000000T0000Z-260809T1900Z/ THE NATIONAL WEATHER SERVICE HAS EXTENDED SEVERE THUNDERSTORM WATCH 546 TO INCLUDE THE FOLLOWING AREAS UNTIL 2 PM CDT THIS AFTERNOON IN ILLINOIS THIS WATCH INCLUDES 2 COUNTIES IN NORTHEAST ILLINOIS COOK DUPAGE THIS INCLUDES THE CITIES OF CAROL STREAM, CHICAGO, DOWNERS GROVE, EVANSTON, LEMONT, LOMBARD, NAPERVILLE, OAK LAWN, ORLAND PARK, PARK FOREST, SCHAUMBURG, AND WHEATON. $$ LMZ741-742-091915- /O.EXA.KLOT.SV.A.0546.000000T0000Z-260809T1900Z/ THE NATIONAL WEATHER SERVICE HAS EXTENDED SEVERE THUNDERSTORM WATCH 546 TO INCLUDE THE FOLLOWING AREAS UNTIL 2 PM CDT THIS AFTERNOON THIS WATCH INCLUDES THE FOLLOWING ADJACENT COASTAL WATERS WILMETTE HARBOR TO NORTHERLY ISLAND IL NORTHERLY ISLAND TO CALUMET HARBOR IL $$ ILC097-091915- /O.CON.KLOT.SV.A.0546.000000T0000Z-260809T1900Z/ SEVERE THUNDERSTORM WATCH 546 REMAINS VALID UNTIL 2 PM CDT THIS AFTERNOON FOR THE FOLLOWING AREAS IN ILLINOIS THIS WATCH INCLUDES 1 COUNTY IN NORTHEAST ILLINOIS LAKE IL THIS INCLUDES THE CITIES OF BUFFALO GROVE, GURNEE, MUNDELEIN, AND WAUKEGAN. $$ LMZ740-777-091915- /O.CON.KLOT.SV.A.0546.000000T0000Z-260809T1900Z/ SEVERE THUNDERSTORM WATCH 546 REMAINS VALID UNTIL 2 PM CDT THIS AFTERNOON FOR THE FOLLOWING AREAS THIS WATCH INCLUDES THE FOLLOWING ADJACENT COASTAL WATERS WINTHROP HARBOR TO WILMETTE HARBOR IL LAKE MICHIGAN FROM WINTHROP HARBOR TO WILMETTE HARBOR IL 5NM OFFSHORE TO MID LAKE $$ Action: Area Extended Issued At: 2026-08-09 13:08:51 832 WWUS63 KLOT 091808 WCNLOT WATCH COUNTY NOTIFICATION FOR WATCH 546 NATIONAL WEATHER SERVICE CHICAGO IL 108 PM CDT SUN AUG 9 2026 ILC111-091915- /O.CAN.KLOT.SV.A.0546.000000T0000Z-260809T1900Z/ THE NATIONAL WEATHER SERVICE HAS CANCELLED SEVERE THUNDERSTORM WATCH 546 FOR THE FOLLOWING AREAS IN ILLINOIS THIS CANCELS 1 COUNTY IN NORTHEAST ILLINOIS MCHENRY THIS INCLUDES THE CITIES OF ALGONQUIN, CRYSTAL LAKE, MCHENRY, AND WOODSTOCK. $$ ILC031-043-091915- /O.EXA.KLOT.SV.A.0546.000000T0000Z-260809T1900Z/ THE NATIONAL WEATHER SERVICE HAS EXTENDED SEVERE THUNDERSTORM WATCH 546 TO INCLUDE THE FOLLOWING AREAS UNTIL 2 PM CDT THIS AFTERNOON IN ILLINOIS THIS WATCH INCLUDES 2 COUNTIES IN NORTHEAST ILLINOIS COOK DUPAGE THIS INCLUDES THE CITIES OF CAROL STREAM, CHICAGO, DOWNERS GROVE, EVANSTON, LEMONT, LOMBARD, NAPERVILLE, OAK LAWN, ORLAND PARK, PARK FOREST, SCHAUMBURG, AND WHEATON. $$ LMZ741-742-091915- /O.EXA.KLOT.SV.A.0546.000000T0000Z-260809T1900Z/ THE NATIONAL WEATHER SERVICE HAS EXTENDED SEVERE THUNDERSTORM WATCH 546 TO INCLUDE THE FOLLOWING AREAS UNTIL 2 PM CDT THIS AFTERNOON THIS WATCH INCLUDES THE FOLLOWING ADJACENT COASTAL WATERS WILMETTE HARBOR TO NORTHERLY ISLAND IL NORTHERLY ISLAND TO CALUMET HARBOR IL $$ ILC097-091915- /O.CON.KLOT.SV.A.0546.000000T0000Z-260809T1900Z/ SEVERE THUNDERSTORM WATCH 546 REMAINS VALID UNTIL 2 PM CDT THIS AFTERNOON FOR THE FOLLOWING AREAS IN ILLINOIS THIS WATCH INCLUDES 1 COUNTY IN NORTHEAST ILLINOIS LAKE IL THIS INCLUDES THE CITIES OF BUFFALO GROVE, GURNEE, MUNDELEIN, AND WAUKEGAN. $$ LMZ740-777-091915- /O.CON.KLOT.SV.A.0546.000000T0000Z-260809T1900Z/ SEVERE THUNDERSTORM WATCH 546 REMAINS VALID UNTIL 2 PM CDT THIS AFTERNOON FOR THE FOLLOWING AREAS THIS WATCH INCLUDES THE FOLLOWING ADJACENT COASTAL WATERS WINTHROP HARBOR TO WILMETTE HARBOR IL LAKE MICHIGAN FROM WINTHROP HARBOR TO WILMETTE HARBOR IL 5NM OFFSHORE TO MID LAKE $$ Action: Cancelled Issued At: 2026-08-09 13:08:51 832 WWUS63 KLOT 091808 WCNLOT WATCH COUNTY NOTIFICATION FOR WATCH 546 NATIONAL WEATHER SERVICE CHICAGO IL 108 PM CDT SUN AUG 9 2026 ILC111-091915- /O.CAN.KLOT.SV.A.0546.000000T0000Z-260809T1900Z/ THE NATIONAL WEATHER SERVICE HAS CANCELLED SEVERE THUNDERSTORM WATCH 546 FOR THE FOLLOWING AREAS IN ILLINOIS THIS CANCELS 1 COUNTY IN NORTHEAST ILLINOIS MCHENRY THIS INCLUDES THE CITIES OF ALGONQUIN, CRYSTAL LAKE, MCHENRY, AND WOODSTOCK. $$ ILC031-043-091915- /O.EXA.KLOT.SV.A.0546.000000T0000Z-260809T1900Z/ THE NATIONAL WEATHER SERVICE HAS EXTENDED SEVERE THUNDERSTORM WATCH 546 TO INCLUDE THE FOLLOWING AREAS UNTIL 2 PM CDT THIS AFTERNOON IN ILLINOIS THIS WATCH INCLUDES 2 COUNTIES IN NORTHEAST ILLINOIS COOK DUPAGE THIS INCLUDES THE CITIES OF CAROL STREAM, CHICAGO, DOWNERS GROVE, EVANSTON, LEMONT, LOMBARD, NAPERVILLE, OAK LAWN, ORLAND PARK, PARK FOREST, SCHAUMBURG, AND WHEATON. $$ LMZ741-742-091915- /O.EXA.KLOT.SV.A.0546.000000T0000Z-260809T1900Z/ THE NATIONAL WEATHER SERVICE HAS EXTENDED SEVERE THUNDERSTORM WATCH 546 TO INCLUDE THE FOLLOWING AREAS UNTIL 2 PM CDT THIS AFTERNOON THIS WATCH INCLUDES THE FOLLOWING ADJACENT COASTAL WATERS WILMETTE HARBOR TO NORTHERLY ISLAND IL NORTHERLY ISLAND TO CALUMET HARBOR IL $$ ILC097-091915- /O.CON.KLOT.SV.A.0546.000000T0000Z-260809T1900Z/ SEVERE THUNDERSTORM WATCH 546 REMAINS VALID UNTIL 2 PM CDT THIS AFTERNOON FOR THE FOLLOWING AREAS IN ILLINOIS THIS WATCH INCLUDES 1 COUNTY IN NORTHEAST ILLINOIS LAKE IL THIS INCLUDES THE CITIES OF BUFFALO GROVE, GURNEE, MUNDELEIN, AND WAUKEGAN. $$ LMZ740-777-091915- /O.CON.KLOT.SV.A.0546.000000T0000Z-260809T1900Z/ SEVERE THUNDERSTORM WATCH 546 REMAINS VALID UNTIL 2 PM CDT THIS AFTERNOON FOR THE FOLLOWING AREAS THIS WATCH INCLUDES THE FOLLOWING ADJACENT COASTAL WATERS WINTHROP HARBOR TO WILMETTE HARBOR IL LAKE MICHIGAN FROM WINTHROP HARBOR TO WILMETTE HARBOR IL 5NM OFFSHORE TO MID LAKE $$ Action: Time Extended Issued At: 2026-08-09 13:47:51 192 WWUS63 KLOT 091847 WCNLOT WATCH COUNTY NOTIFICATION FOR WATCH 546 NATIONAL WEATHER SERVICE CHICAGO IL 147 PM CDT SUN AUG 9 2026 ILC097-092000- /O.CAN.KLOT.SV.A.0546.000000T0000Z-260809T1900Z/ THE NATIONAL WEATHER SERVICE HAS CANCELLED SEVERE THUNDERSTORM WATCH 546 FOR THE FOLLOWING AREAS IN ILLINOIS THIS CANCELS 1 COUNTY IN NORTHEAST ILLINOIS LAKE IL THIS INCLUDES THE CITIES OF BUFFALO GROVE, GURNEE, MUNDELEIN, AND WAUKEGAN. $$ LMZ740-092000- /O.CAN.KLOT.SV.A.0546.000000T0000Z-260809T1900Z/ THE NATIONAL WEATHER SERVICE HAS CANCELLED SEVERE THUNDERSTORM WATCH 546 FOR THE FOLLOWING AREAS THIS CANCELS THE FOLLOWING ADJACENT COASTAL WATERS WINTHROP HARBOR TO WILMETTE HARBOR IL $$ ILC031-043-092100- /O.EXT.KLOT.SV.A.0546.000000T0000Z-260809T2100Z/ SEVERE THUNDERSTORM WATCH 546, PREVIOUSLY IN EFFECT UNTIL 2 PM CDT THIS AFTERNOON, IS NOW IN EFFECT UNTIL 4 PM CDT THIS AFTERNOON FOR THE FOLLOWING AREAS IN ILLINOIS THIS WATCH INCLUDES 2 COUNTIES IN NORTHEAST ILLINOIS COOK DUPAGE THIS INCLUDES THE CITIES OF CAROL STREAM, CHICAGO, DOWNERS GROVE, EVANSTON, LEMONT, LOMBARD, NAPERVILLE, OAK LAWN, ORLAND PARK, PARK FOREST, SCHAUMBURG, AND WHEATON. $$ LMZ741-742-777-092100- /O.EXT.KLOT.SV.A.0546.000000T0000Z-260809T2100Z/ SEVERE THUNDERSTORM WATCH 546, PREVIOUSLY IN EFFECT UNTIL 2 PM CDT THIS AFTERNOON, IS NOW IN EFFECT UNTIL 4 PM CDT THIS AFTERNOON FOR THE FOLLOWING AREAS THIS WATCH INCLUDES THE FOLLOWING ADJACENT COASTAL WATERS 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 $$ Action: Cancelled Issued At: 2026-08-09 13:47:51 192 WWUS63 KLOT 091847 WCNLOT WATCH COUNTY NOTIFICATION FOR WATCH 546 NATIONAL WEATHER SERVICE CHICAGO IL 147 PM CDT SUN AUG 9 2026 ILC097-092000- /O.CAN.KLOT.SV.A.0546.000000T0000Z-260809T1900Z/ THE NATIONAL WEATHER SERVICE HAS CANCELLED SEVERE THUNDERSTORM WATCH 546 FOR THE FOLLOWING AREAS IN ILLINOIS THIS CANCELS 1 COUNTY IN NORTHEAST ILLINOIS LAKE IL THIS INCLUDES THE CITIES OF BUFFALO GROVE, GURNEE, MUNDELEIN, AND WAUKEGAN. $$ LMZ740-092000- /O.CAN.KLOT.SV.A.0546.000000T0000Z-260809T1900Z/ THE NATIONAL WEATHER SERVICE HAS CANCELLED SEVERE THUNDERSTORM WATCH 546 FOR THE FOLLOWING AREAS THIS CANCELS THE FOLLOWING ADJACENT COASTAL WATERS WINTHROP HARBOR TO WILMETTE HARBOR IL $$ ILC031-043-092100- /O.EXT.KLOT.SV.A.0546.000000T0000Z-260809T2100Z/ SEVERE THUNDERSTORM WATCH 546, PREVIOUSLY IN EFFECT UNTIL 2 PM CDT THIS AFTERNOON, IS NOW IN EFFECT UNTIL 4 PM CDT THIS AFTERNOON FOR THE FOLLOWING AREAS IN ILLINOIS THIS WATCH INCLUDES 2 COUNTIES IN NORTHEAST ILLINOIS COOK DUPAGE THIS INCLUDES THE CITIES OF CAROL STREAM, CHICAGO, DOWNERS GROVE, EVANSTON, LEMONT, LOMBARD, NAPERVILLE, OAK LAWN, ORLAND PARK, PARK FOREST, SCHAUMBURG, AND WHEATON. $$ LMZ741-742-777-092100- /O.EXT.KLOT.SV.A.0546.000000T0000Z-260809T2100Z/ SEVERE THUNDERSTORM WATCH 546, PREVIOUSLY IN EFFECT UNTIL 2 PM CDT THIS AFTERNOON, IS NOW IN EFFECT UNTIL 4 PM CDT THIS AFTERNOON FOR THE FOLLOWING AREAS THIS WATCH INCLUDES THE FOLLOWING ADJACENT COASTAL WATERS 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 $$ Action: Cancelled Issued At: 2026-08-09 13:47:51 192 WWUS63 KLOT 091847 WCNLOT WATCH COUNTY NOTIFICATION FOR WATCH 546 NATIONAL WEATHER SERVICE CHICAGO IL 147 PM CDT SUN AUG 9 2026 ILC097-092000- /O.CAN.KLOT.SV.A.0546.000000T0000Z-260809T1900Z/ THE NATIONAL WEATHER SERVICE HAS CANCELLED SEVERE THUNDERSTORM WATCH 546 FOR THE FOLLOWING AREAS IN ILLINOIS THIS CANCELS 1 COUNTY IN NORTHEAST ILLINOIS LAKE IL THIS INCLUDES THE CITIES OF BUFFALO GROVE, GURNEE, MUNDELEIN, AND WAUKEGAN. $$ LMZ740-092000- /O.CAN.KLOT.SV.A.0546.000000T0000Z-260809T1900Z/ THE NATIONAL WEATHER SERVICE HAS CANCELLED SEVERE THUNDERSTORM WATCH 546 FOR THE FOLLOWING AREAS THIS CANCELS THE FOLLOWING ADJACENT COASTAL WATERS WINTHROP HARBOR TO WILMETTE HARBOR IL $$ ILC031-043-092100- /O.EXT.KLOT.SV.A.0546.000000T0000Z-260809T2100Z/ SEVERE THUNDERSTORM WATCH 546, PREVIOUSLY IN EFFECT UNTIL 2 PM CDT THIS AFTERNOON, IS NOW IN EFFECT UNTIL 4 PM CDT THIS AFTERNOON FOR THE FOLLOWING AREAS IN ILLINOIS THIS WATCH INCLUDES 2 COUNTIES IN NORTHEAST ILLINOIS COOK DUPAGE THIS INCLUDES THE CITIES OF CAROL STREAM, CHICAGO, DOWNERS GROVE, EVANSTON, LEMONT, LOMBARD, NAPERVILLE, OAK LAWN, ORLAND PARK, PARK FOREST, SCHAUMBURG, AND WHEATON. $$ LMZ741-742-777-092100- /O.EXT.KLOT.SV.A.0546.000000T0000Z-260809T2100Z/ SEVERE THUNDERSTORM WATCH 546, PREVIOUSLY IN EFFECT UNTIL 2 PM CDT THIS AFTERNOON, IS NOW IN EFFECT UNTIL 4 PM CDT THIS AFTERNOON FOR THE FOLLOWING AREAS THIS WATCH INCLUDES THE FOLLOWING ADJACENT COASTAL WATERS 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 $$ Action: Time Extended Issued At: 2026-08-09 13:47:51 192 WWUS63 KLOT 091847 WCNLOT WATCH COUNTY NOTIFICATION FOR WATCH 546 NATIONAL WEATHER SERVICE CHICAGO IL 147 PM CDT SUN AUG 9 2026 ILC097-092000- /O.CAN.KLOT.SV.A.0546.000000T0000Z-260809T1900Z/ THE NATIONAL WEATHER SERVICE HAS CANCELLED SEVERE THUNDERSTORM WATCH 546 FOR THE FOLLOWING AREAS IN ILLINOIS THIS CANCELS 1 COUNTY IN NORTHEAST ILLINOIS LAKE IL THIS INCLUDES THE CITIES OF BUFFALO GROVE, GURNEE, MUNDELEIN, AND WAUKEGAN. $$ LMZ740-092000- /O.CAN.KLOT.SV.A.0546.000000T0000Z-260809T1900Z/ THE NATIONAL WEATHER SERVICE HAS CANCELLED SEVERE THUNDERSTORM WATCH 546 FOR THE FOLLOWING AREAS THIS CANCELS THE FOLLOWING ADJACENT COASTAL WATERS WINTHROP HARBOR TO WILMETTE HARBOR IL $$ ILC031-043-092100- /O.EXT.KLOT.SV.A.0546.000000T0000Z-260809T2100Z/ SEVERE THUNDERSTORM WATCH 546, PREVIOUSLY IN EFFECT UNTIL 2 PM CDT THIS AFTERNOON, IS NOW IN EFFECT UNTIL 4 PM CDT THIS AFTERNOON FOR THE FOLLOWING AREAS IN ILLINOIS THIS WATCH INCLUDES 2 COUNTIES IN NORTHEAST ILLINOIS COOK DUPAGE THIS INCLUDES THE CITIES OF CAROL STREAM, CHICAGO, DOWNERS GROVE, EVANSTON, LEMONT, LOMBARD, NAPERVILLE, OAK LAWN, ORLAND PARK, PARK FOREST, SCHAUMBURG, AND WHEATON. $$ LMZ741-742-777-092100- /O.EXT.KLOT.SV.A.0546.000000T0000Z-260809T2100Z/ SEVERE THUNDERSTORM WATCH 546, PREVIOUSLY IN EFFECT UNTIL 2 PM CDT THIS AFTERNOON, IS NOW IN EFFECT UNTIL 4 PM CDT THIS AFTERNOON FOR THE FOLLOWING AREAS THIS WATCH INCLUDES THE FOLLOWING ADJACENT COASTAL WATERS 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 $$ Action: Expired Issued At: 2026-08-09 15:45:54 462 WWUS63 KLOT 092045 WCNLOT WATCH COUNTY NOTIFICATION FOR WATCH 546 NATIONAL WEATHER SERVICE CHICAGO IL 345 PM CDT SUN AUG 9 2026 ILC031-043-092145- /O.EXP.KLOT.SV.A.0546.000000T0000Z-260809T2100Z/ THE NATIONAL WEATHER SERVICE WILL ALLOW SEVERE THUNDERSTORM WATCH 546 TO EXPIRE AT 4 PM CDT THIS AFTERNOON FOR THE FOLLOWING AREAS IN ILLINOIS THIS ALLOWS TO EXPIRE 2 COUNTIES IN NORTHEAST ILLINOIS COOK DUPAGE THIS INCLUDES THE CITIES OF CAROL STREAM, CHICAGO, DOWNERS GROVE, EVANSTON, LEMONT, LOMBARD, NAPERVILLE, OAK LAWN, ORLAND PARK, PARK FOREST, SCHAUMBURG, AND WHEATON. $$ LMZ741-742-777-092145- /O.EXP.KLOT.SV.A.0546.000000T0000Z-260809T2100Z/ THE NATIONAL WEATHER SERVICE WILL ALLOW SEVERE THUNDERSTORM WATCH 546 TO EXPIRE AT 4 PM CDT THIS AFTERNOON FOR THE FOLLOWING AREAS THIS ALLOWS TO EXPIRE THE FOLLOWING ADJACENT COASTAL WATERS 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 $$ Action: Expired Issued At: 2026-08-09 15:45:54 462 WWUS63 KLOT 092045 WCNLOT WATCH COUNTY NOTIFICATION FOR WATCH 546 NATIONAL WEATHER SERVICE CHICAGO IL 345 PM CDT SUN AUG 9 2026 ILC031-043-092145- /O.EXP.KLOT.SV.A.0546.000000T0000Z-260809T2100Z/ THE NATIONAL WEATHER SERVICE WILL ALLOW SEVERE THUNDERSTORM WATCH 546 TO EXPIRE AT 4 PM CDT THIS AFTERNOON FOR THE FOLLOWING AREAS IN ILLINOIS THIS ALLOWS TO EXPIRE 2 COUNTIES IN NORTHEAST ILLINOIS COOK DUPAGE THIS INCLUDES THE CITIES OF CAROL STREAM, CHICAGO, DOWNERS GROVE, EVANSTON, LEMONT, LOMBARD, NAPERVILLE, OAK LAWN, ORLAND PARK, PARK FOREST, SCHAUMBURG, AND WHEATON. $$ LMZ741-742-777-092145- /O.EXP.KLOT.SV.A.0546.000000T0000Z-260809T2100Z/ THE NATIONAL WEATHER SERVICE WILL ALLOW SEVERE THUNDERSTORM WATCH 546 TO EXPIRE AT 4 PM CDT THIS AFTERNOON FOR THE FOLLOWING AREAS THIS ALLOWS TO EXPIRE THE FOLLOWING ADJACENT COASTAL WATERS 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 $$ | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||