311
WHUS73 KMKX 120448
MWWMKX
URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
1148 PM CDT MON MAY 11 2026
LMZ364-366-563-565-567-669-671-868-870-872-121300-
/O.CON.KMKX.GL.W.0026.260512T1400Z-260512T2200Z/
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 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-
1148 PM CDT MON MAY 11 2026
..GALE WARNING REMAINS IN EFFECT FROM 9 AM TO 5 PM CDT TUESDAY
* WHAT...SOUTH WINDS 15 TO 25 KT WITH GUSTS BETWEEN 35 AND 40 KT
AND WAVES 6 TO 9 FT EXPECTED.
* WHERE...CENTRAL THIRD OF THE OPEN WATERS OF LAKE MICHIGAN,
LAKE MICHIGAN FROM CHARLEVOIX TO POINT BETSIE MI 5NM OFFSHORE
TO MID LAKE, AND LAKE MICHIGAN FROM ROCK ISLAND PASSAGE TO
STURGEON BAY WI 5NM OFFSHORE TO MID LAKE.
* WHEN...FROM 9 AM TO 5 PM CDT TUESDAY.
* IMPACTS...STRONG WINDS WILL CAUSE HAZARDOUS WAVES WHICH COULD
CAPSIZE OR DAMAGE VESSELS AND REDUCE VISIBILITY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
MARINERS SHOULD ALTER PLANS TO AVOID THESE HAZARDOUS CONDITIONS.
REMAIN IN PORT, SEEK SAFE HARBOR, ALTER COURSE, AND/OR SECURE THE
VESSEL FOR SEVERE CONDITIONS.
LMZ643>646-121300-
/O.CON.KMKX.SC.Y.0051.260512T1400Z-260513T2100Z/
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-
1148 PM CDT MON MAY 11 2026
...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 9 AM TUESDAY TO
4 PM CDT WEDNESDAY...
* WHAT...SOUTH WINDS 15 TO 25 KT WITH GUSTS UP TO 30 KT AND
WAVES 4 TO 7 FT EXPECTED. WINDS SHIFTING TO WEST TO NORTHWEST
AND REMAINING GUSTY FOR TUESDAY NIGHT AND WEDNESDAY. A FEW
GUSTS TO GALE FORCE MAY OCCUR TUESDAY LATE MORNING INTO THE
MID AFTERNOON.
* WHERE...NEARSHORE WATERS FROM SHEBOYGAN TO WINTHROP HARBOR IL.
* WHEN...FROM 9 AM TUESDAY TO 4 PM CDT WEDNESDAY.
* IMPACTS...CONDITIONS WILL BE HAZARDOUS TO SMALL CRAFT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
INEXPERIENCED MARINERS, ESPECIALLY THOSE OPERATING SMALLER
VESSELS, SHOULD AVOID NAVIGATING IN HAZARDOUS CONDITIONS.
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