533
WHUS73 KMKX 120845
MWWMKX
URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
345 AM CDT TUE MAY 12 2026
LMZ643-121645-
/O.EXA.KMKX.GL.W.0026.260512T1400Z-260512T2200Z/
/O.EXT.KMKX.SC.Y.0051.260512T2200Z-260513T2100Z/
SHEBOYGAN TO PORT WASHINGTON WI-
345 AM CDT TUE MAY 12 2026
...GALE WARNING IN EFFECT FROM 9 AM THIS MORNING TO 5 PM CDT THIS
AFTERNOON...
...SMALL CRAFT ADVISORY NOW IN EFFECT FROM 5 PM THIS AFTERNOON TO
4 PM CDT WEDNESDAY...
* WHAT...FOR THE GALE WARNING, SOUTH WINDS 20 TO 25 KT WITH GUSTS
UP TO 35 KT AND WAVES 6 TO 9 FT EXPECTED. FOR THE SMALL CRAFT
ADVISORY, WEST TO NORTHWEST WINDS 15 TO 20 KT WITH GUSTS UP TO
30 KT AND WAVES 4 TO 7 FT EXPECTED.
* WHERE...NEARSHORE WATERS FROM SHEBOYGAN TO PORT WASHINGTON.
* WHEN...FOR THE GALE WARNING, FROM 9 AM THIS MORNING TO 5 PM
CDT THIS AFTERNOON. FOR THE SMALL CRAFT ADVISORY, FROM 5 PM
THIS AFTERNOON TO 4 PM CDT WEDNESDAY.
* IMPACTS...CONDITIONS WILL BE HAZARDOUS TO SMALL CRAFT.
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.
LMZ364-366-563-565-567-669-671-868-870-872-121645-
/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-
345 AM CDT TUE MAY 12 2026
...GALE WARNING REMAINS IN EFFECT FROM 9 AM THIS MORNING TO 5 PM
CDT THIS AFTERNOON...
* 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, SOUTH
OF A LINE FROM ROCK ISLAND PASSAGE TO CHARLEVOIX MI TO NORTH OF
A LINE FROM NORTH POINT LIGHTHOUSE WI TO GRAND HAVEN MI.
* 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.
LMZ644>646-121645-
/O.CON.KMKX.SC.Y.0051.260512T1400Z-260513T2100Z/
PORT WASHINGTON TO NORTH POINT LIGHT WI-
NORTH POINT LIGHT TO WIND POINT WI-
WIND POINT WI TO WINTHROP HARBOR IL-
345 AM CDT TUE MAY 12 2026
...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 9 AM THIS MORNING
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 TONIGHT AND WEDNESDAY. A FEW GUSTS TO GALE
FORCE MAY OCCUR LATE TUESDAY MORNING INTO THE MIDDLE 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.
WOOD
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