107
WHUS73 KMKX 170514
MWWMKX
URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
1214 AM CDT TUE MAR 17 2026
LMZ643>646-171315-
/O.CAN.KMKX.GL.W.0017.000000T0000Z-260317T0600Z/
/O.NEW.KMKX.SC.Y.0028.260317T0514Z-260317T1600Z/
/O.CON.KMKX.UP.W.0005.000000T0000Z-260317T1600Z/
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-
1214 AM CDT TUE MAR 17 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 AM CDT THIS MORNING
...HEAVY FREEZING SPRAY WARNING REMAINS IN EFFECT UNTIL 11 AM CDT
THIS MORNING...
..GALE WARNING IS CANCELLED
* WHAT...FOR THE SMALL CRAFT ADVISORY, NORTHWEST WINDS 15 TO 25
KT WITH GUSTS UP TO 30 KT AND WAVES 4 TO 6 FT. FOR THE HEAVY
FREEZING SPRAY WARNING, HEAVY FREEZING SPRAY AT A RATE OF 2 CM
PER HOUR OR GREATER MAY RAPIDLY ACCUMULATE ON VESSELS.
* WHERE...NEARSHORE WATERS FROM SHEBOYGAN TO WINTHROP HARBOR IL.
* WHEN...UNTIL 11 AM CDT THIS MORNING.
* IMPACTS...OPERATING A VESSEL IN HEAVY FREEZING SPRAY IS
HAZARDOUS. FREEZING SPRAY MAY RENDER MECHANICAL AND ELECTRONIC
COMPONENTS INOPERATIVE. RAPID ICE ACCRETION ON DECKS AND
SUPERSTRUCTURES MAY RESULT IN A CATASTROPHIC LOSS OF STABILITY.
CONDITIONS WILL BE HAZARDOUS TO SMALL CRAFT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
MARINERS SHOULD PREPARE FOR DANGEROUS ACCUMULATION OF ICE ON
THEIR VESSEL. IF POSSIBLE, REMAIN IN PORT, AVOID THE WARNING AREA
OR CONDUCT MITIGATION.
INEXPERIENCED MARINERS, ESPECIALLY THOSE OPERATING SMALLER
VESSELS, SHOULD AVOID NAVIGATING IN HAZARDOUS CONDITIONS.
LMZ080-673-675-777-779-874-876-878-171315-
/O.CON.KMKX.GL.W.0016.000000T0000Z-260317T1200Z/
/O.CON.KMKX.UP.W.0005.000000T0000Z-260317T1600Z/
LAKE MICHIGAN MICHIGAN CITY IN TO ST. JOSEPH MI 5 NM OFFSHORE TO
MID-LINE OF 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 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-
1214 AM CDT TUE MAR 17 2026
..GALE WARNING REMAINS IN EFFECT UNTIL 7 AM CDT THIS MORNING
...HEAVY FREEZING SPRAY WARNING REMAINS IN EFFECT UNTIL 11 AM CDT
THIS MORNING...
* WHAT...FOR THE GALE WARNING, NORTHWEST WINDS 25 TO 30 KT WITH
GUSTS UP TO 35 KT AND WAVES 11 TO 16 FT. FOR THE HEAVY
FREEZING SPRAY WARNING, HEAVY FREEZING SPRAY AT A RATE OF 2 CM
PER HOUR OR GREATER MAY RAPIDLY ACCUMULATE ON VESSELS.
* WHERE...SOUTHERN THIRD OF THE OPEN WATERS OF LAKE MICHIGAN.
* WHEN...FOR THE GALE WARNING, UNTIL 7 AM CDT THIS MORNING. FOR
THE HEAVY FREEZING SPRAY WARNING, UNTIL 11 AM CDT THIS MORNING.
* IMPACTS...OPERATING A VESSEL IN HEAVY FREEZING SPRAY IS
HAZARDOUS. FREEZING SPRAY MAY RENDER MECHANICAL AND ELECTRONIC
COMPONENTS INOPERATIVE. RAPID ICE ACCRETION ON DECKS AND
SUPERSTRUCTURES MAY RESULT IN A CATASTROPHIC LOSS OF
STABILITY. STRONG WINDS WILL CAUSE HAZARDOUS WAVES WHICH COULD
CAPSIZE OR DAMAGE VESSELS AND REDUCE VISIBILITY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
MARINERS SHOULD PREPARE FOR DANGEROUS ACCUMULATION OF ICE ON
THEIR VESSEL. IF POSSIBLE, REMAIN IN PORT, AVOID THE WARNING AREA
OR CONDUCT MITIGATION.
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.
LMZ261-362-364-366-563-565-567-669-671-868-870-872-171315-
/O.CON.KMKX.GL.W.0017.000000T0000Z-260317T1200Z/
/O.CON.KMKX.UP.W.0005.000000T0000Z-260317T1600Z/
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 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-
1214 AM CDT TUE MAR 17 2026
..GALE WARNING REMAINS IN EFFECT UNTIL 7 AM CDT THIS MORNING
...HEAVY FREEZING SPRAY WARNING REMAINS IN EFFECT UNTIL 11 AM CDT
THIS MORNING...
* WHAT...FOR THE GALE WARNING, NORTHWEST WINDS 20 TO 30 KT WITH
GUSTS UP TO 35 KT AND WAVES 9 TO 14 FT. FOR THE HEAVY FREEZING
SPRAY WARNING, HEAVY FREEZING SPRAY AT A RATE OF 2 CM PER HOUR
OR GREATER MAY RAPIDLY ACCUMULATE ON VESSELS.
* WHERE...NORTHERN TWO THIRDS OF THE OPEN WATERS OF LAKE
MICHIGAN.
* WHEN...FOR THE GALE WARNING, UNTIL 7 AM CDT THIS MORNING. FOR
THE HEAVY FREEZING SPRAY WARNING, UNTIL 11 AM CDT THIS MORNING.
* IMPACTS...OPERATING A VESSEL IN HEAVY FREEZING SPRAY IS
HAZARDOUS. FREEZING SPRAY MAY RENDER MECHANICAL AND ELECTRONIC
COMPONENTS INOPERATIVE. RAPID ICE ACCRETION ON DECKS AND
SUPERSTRUCTURES MAY RESULT IN A CATASTROPHIC LOSS OF
STABILITY. STRONG WINDS WILL CAUSE HAZARDOUS WAVES WHICH COULD
CAPSIZE OR DAMAGE VESSELS AND REDUCE VISIBILITY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
MARINERS SHOULD PREPARE FOR DANGEROUS ACCUMULATION OF ICE ON
THEIR VESSEL. IF POSSIBLE, REMAIN IN PORT, AVOID THE WARNING AREA
OR CONDUCT MITIGATION.
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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