501
FLUS43 KMKX 182025
HWOMKX
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
325 PM CDT FRI SEP 18 2026
WIZ046-047-051-052-056>060-062>072-192030-
MARQUETTE-GREEN LAKE-FOND DU LAC-SHEBOYGAN-SAUK-COLUMBIA-DODGE-
WASHINGTON-OZAUKEE-IOWA-DANE-JEFFERSON-WAUKESHA-MILWAUKEE-
LAFAYETTE-GREEN-ROCK-WALWORTH-RACINE-KENOSHA-
325 PM CDT FRI SEP 18 2026
THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EAST CENTRAL
WISCONSIN, SOUTH CENTRAL WISCONSIN AND SOUTHEAST WISCONSIN.
DAY ONE
TONIGHT
WIDESPREAD SHOWERS AND THUNDERSTORMS THIS EVENING INTO SATURDAY
MORNING. HEAVY RAINFALL OF 1 TO 3 INCHES AND BAND OF 3-5 INCHES OR
MORE POSSIBLE. URBAN AND SMALL STREAM FLOODING AND/OR FLASH
FLOODING IS POSSIBLE. A FLOOD WATCH IS NOW IN EFFECT FOR ALL
SOUTHERN WI.
HIGH SWIM RISK FOR ALL SOUTHERN WI BEACHES TONIGHT INTO SATURDAY
MORNING.
DAYS TWO THROUGH SEVEN
SATURDAY THROUGH FRIDAY
A FLOOD WATCH CONTINUES FOR ALL SOUTHERN WI INTO SATURDAY EARLY
AFTERNOON. ADDITIONAL RAIN AND STRONGER STORMS MAY BE POSSIBLE
SATURDAY LATER AFTERNOON AND EVENING, ESPECIALLY TOWARD THE WI/IL
BORDER.
A HIGH SWIM RISK CONTINUES SATURDAY WITH ADDITIONAL PERIODS OF
ELEVATED SWIM RISK CONDITIONS FOR SUNDAY.
SPOTTER INFORMATION STATEMENT
SPOTTER ACTIVATION WILL NOT BE NEEDED BUT RAINFALL REPORTS ARE
APPRECIATED.
LMZ643>646-192030-
SHEBOYGAN TO PORT WASHINGTON WI-
PORT WASHINGTON TO NORTH POINT LIGHT WI-
NORTH POINT LIGHT TO WIND POINT WI-
WIND POINT WI TO WINTHROP HARBOR IL-
325 PM CDT FRI SEP 18 2026
THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE NEARSHORE WATERS FROM
SHEBOYGAN WISCONSIN TO WINTHROP HARBOR ILLINOIS.
DAY ONE
TONIGHT
SMALL CRAFT CONDITIONS DEVELOP TONIGHT.
CHANCE OF THUNDERSTORMS TONIGHT.
DAYS TWO THROUGH SEVEN
SATURDAY THROUGH FRIDAY
SMALL CRAFT CONDITIONS CONTINUE FOR SATURDAY. ADDITIONAL PERIODS
OF SMALL CRAFT CONDITIONS POSSIBLE FOR SUNDAY INTO NEXT WEEK.
CHANCE OF THUNDERSTORMS SATURDAY INTO SATURDAY EVENING..
LMZ080-261-362-364-366-563-565-567-669-671-673-675-777-779-868-
870-872-874-876-878-192030-
LAKE MICHIGAN MICHIGAN CITY IN TO ST. JOSEPH MI 5 NM OFFSHORE TO
MID-LINE OF LAKE.-
LAKE MICHIGAN FROM SEUL CHOIX POINT TO ROCK ISLAND PASSAGE 5NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN SOUTH OF A LINE FROM SEUL CHOIX POINT TO THE
MACKINAC BRIDGE AND NORTH OF A LINE FROM CHARLEVOIX MI TO SOUTH
FOX ISLAND 5NM OFFSHORE-
LAKE MICHIGAN FROM CHARLEVOIX TO POINT BETSIE MI 5NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM POINT BETSIE TO MANISTEE MI 5NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM ROCK ISLAND PASSAGE TO STURGEON BAY WI 5NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM STURGEON BAY TO TWO RIVERS WI 5NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM TWO RIVERS TO SHEBOYGAN WI 5NM OFFSHORE TO MID
LAKE-
LAKE MICHIGAN FROM SHEBOYGAN TO PORT WASHINGTON WI 5NM OFFSHORE
TO MID LAKE-
LAKE MICHIGAN FROM PORT WASHINGTON TO NORTH POINT LIGHT WI 5NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM NORTH POINT LIGHT TO WIND POINT WI 5NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM WIND POINT WI TO WINTHROP HARBOR IL 5NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM WINTHROP HARBOR TO WILMETTE HARBOR IL 5NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM WILMETTE HARBOR TO MICHIGAN CITY IN 5NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM PENTWATER TO MANISTEE MI 5NM OFFSHORE TO MID
LAKE-
LAKE MICHIGAN FROM WHITEHALL TO PENTWATER MI 5NM OFFSHORE TO MID
LAKE-
LAKE MICHIGAN FROM GRAND HAVEN TO WHITEHALL MI 5NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM HOLLAND TO GRAND HAVEN MI 5NM OFFSHORE TO MID
LAKE-
LAKE MICHIGAN FROM SOUTH HAVEN TO HOLLAND MI 5NM OFFSHORE TO MID
LAKE-
LAKE MICHIGAN FROM ST JOSEPH TO SOUTH HAVEN MI 5NM OFFSHORE TO
MID LAKE-
325 PM CDT FRI SEP 18 2026
THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE OPEN WATERS OF LAKE MICHIGAN.
DAY ONE
TONIGHT
CHANCE OF THUNDERSTORMS TONIGHT.
DAYS TWO THROUGH SEVEN
SATURDAY THROUGH FRIDAY
CHANCE OF THUNDERSTORMS SATURDAY INTO SATURDAY EVENING..
WWW.WEATHER.GOV/MKX
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page