170
WHUS73 KMKX 182035
MWWMKX
URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
235 PM CST THU DEC 18 2025
LMZ080-366-565-567-669-671-673-675-777-779-868-870-872-874-876-
878-190445-
/O.EXT.KMKX.GL.W.0039.000000T0000Z-251219T1800Z/
LAKE MICHIGAN MICHIGAN CITY IN TO ST. JOSEPH MI 5 NM OFFSHORE TO
MID-LINE OF LAKE.-
LAKE MICHIGAN FROM POINT BETSIE TO MANISTEE MI 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-
235 PM CST THU DEC 18 2025
..GALE WARNING NOW IN EFFECT UNTIL NOON CST FRIDAY
* WHAT...THROUGH THE MORNING AND EARLY AFTERNOON TODAY, SOUTH
WINDS 20 TO 30 KT WITH GUSTS UP TO 40 KT AND WAVES 8 TO 13 FT.
FROM THIS EVENING ONWARDS, WEST TO NORTHWEST WINDS 20 TO 30 KT
WITH GUSTS UP TO 40 KT AND WAVES 7 TO 14 FT.
* WHERE...ALL OPEN WATERS OF LAKE MICHIGAN.
* WHEN...UNTIL NOON CST FRIDAY.
* 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.
LMZ261-362-364-563-190445-
/O.EXT.KMKX.GL.W.0039.000000T0000Z-251219T2000Z/
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 ROCK ISLAND PASSAGE TO STURGEON BAY WI 5NM
OFFSHORE TO MID LAKE-
235 PM CST THU DEC 18 2025
..GALE WARNING NOW IN EFFECT UNTIL 2 PM CST FRIDAY
* WHAT...THROUGH THE MORNING AND EARLY AFTERNOON TODAY, SOUTH
WINDS 20 TO 30 KT WITH GUSTS UP TO 40 KT AND WAVES 8 TO 13 FT.
FROM THIS EVENING ONWARDS, WEST TO NORTHWEST WINDS 20 TO 30 KT
WITH GUSTS UP TO 40 KT AND WAVES 7 TO 14 FT.
* WHERE...ALL OPEN WATERS OF LAKE MICHIGAN.
* WHEN...UNTIL 2 PM CST FRIDAY.
* 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>646-190445-
/O.CON.KMKX.SC.Y.0114.000000T0000Z-251219T0000Z/
/O.CON.KMKX.GL.W.0039.251219T0000Z-251219T1500Z/
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-
235 PM CST THU DEC 18 2025
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 PM CST THIS
EVENING...
...GALE WARNING REMAINS IN EFFECT FROM 6 PM THIS EVENING TO 9 AM
CST FRIDAY...
* WHAT...FOR THE SMALL CRAFT ADVISORY, SOUTH WINDS 15 TO 25 KT
WITH GUSTS UP TO 30 KT AND WAVES 5 TO 9 FT. A FEW GUSTS TO
GALE FORCE POSSIBLE THROUGH EARLY THIS AFTERNOON. FOR THE GALE
WARNING, WEST TO NORTHWEST WINDS 20 TO 30 KT WITH GUSTS UP TO
35 KT EXPECTED.
* WHERE...NEARSHORE WATERS FROM SHEBOYGAN TO WINTHROP HARBOR IL.
* WHEN...FOR THE SMALL CRAFT ADVISORY, UNTIL 6 PM CST THIS
EVENING. FOR THE GALE WARNING, FROM 6 PM THIS EVENING TO 9 AM
CST FRIDAY.
* 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.
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