121  
WHUS73 KMQT 191455  
MWWMQT  
 
URGENT - MARINE WEATHER MESSAGE  
NATIONAL WEATHER SERVICE MARQUETTE MI  
955 AM EST SUN JAN 19 2025  
 
LSZ240>242-192300-  
/O.CON.KMQT.UP.W.0002.000000T0000Z-250122T0000Z/  
/O.CON.KMQT.SC.Y.0010.000000T0000Z-250121T1200Z/  
SAXON HARBOR WI TO BLACK RIVER MI-BLACK RIVER TO ONTONAGON MI-  
ONTONAGON TO UPPER ENTRANCE OF PORTAGE CANAL MI-  
955 AM EST SUN JAN 19 2025 /855 AM CST SUN JAN 19 2025/  
 
...HEAVY FREEZING SPRAY WARNING REMAINS IN EFFECT UNTIL 7 PM EST  
/6 PM CST/ TUESDAY...  
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 7 AM EST /6 AM  
CST/ TUESDAY...  
 
* WHAT...FOR THE HEAVY FREEZING SPRAY WARNING, HEAVY FREEZING  
SPRAY AT A RATE OF 2 CM PER HOUR OR GREATER OCCURRING, AND MAY  
RAPIDLY ACCUMULATE ON VESSELS. FOR THE SMALL CRAFT ADVISORY,  
NORTHWEST WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT AND WAVES 4  
TO 7 FT OCCURRING.  
 
* WHERE...SAXON HARBOR WI TO BLACK RIVER MI, BLACK RIVER TO  
ONTONAGON MI AND ONTONAGON TO UPPER ENTRANCE OF PORTAGE CANAL  
MI.  
 
* WHEN...FOR THE HEAVY FREEZING SPRAY WARNING, UNTIL 7 PM EST /6  
PM CST/ TUESDAY. FOR THE SMALL CRAFT ADVISORY, UNTIL 7 AM EST  
/6 AM CST/ TUESDAY.  
 
* 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.  
 
 
 
 
 
LSZ243-244-192300-  
/O.CON.KMQT.UP.W.0002.000000T0000Z-250122T0000Z/  
/O.CON.KMQT.SC.Y.0010.000000T0000Z-250121T1200Z/  
UPPER ENTRANCE OF PORTAGE CANAL TO EAGLE RIVER MI-  
EAGLE RIVER TO MANITOU ISLAND MI-  
955 AM EST SUN JAN 19 2025  
 
...HEAVY FREEZING SPRAY WARNING REMAINS IN EFFECT UNTIL 7 PM EST  
TUESDAY...  
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 7 AM EST  
TUESDAY...  
 
* WHAT...FOR THE HEAVY FREEZING SPRAY WARNING, HEAVY FREEZING  
SPRAY AT A RATE OF 2 CM PER HOUR OR GREATER OCCURRING, AND MAY  
RAPIDLY ACCUMULATE ON VESSELS. FOR THE SMALL CRAFT ADVISORY,  
NORTHWEST WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT AND WAVES 4  
TO 6 FT OCCURRING.  
 
* WHERE...UPPER ENTRANCE OF PORTAGE CANAL TO EAGLE RIVER MI AND  
EAGLE RIVER TO MANITOU ISLAND MI.  
 
* WHEN...FOR THE HEAVY FREEZING SPRAY WARNING, UNTIL 7 PM EST  
TUESDAY. FOR THE SMALL CRAFT ADVISORY, UNTIL 7 AM EST TUESDAY.  
 
* 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.  
 
 
 
 
 
LSZ248-192300-  
/O.CON.KMQT.UP.W.0002.000000T0000Z-250122T0000Z/  
/O.CON.KMQT.SC.Y.0010.000000T0000Z-250119T1800Z/  
HURON ISLANDS TO MARQUETTE MI-  
955 AM EST SUN JAN 19 2025  
 
...HEAVY FREEZING SPRAY WARNING REMAINS IN EFFECT UNTIL 7 PM EST  
TUESDAY...  
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 1 PM EST THIS  
AFTERNOON...  
 
* WHAT...FOR THE HEAVY FREEZING SPRAY WARNING, HEAVY FREEZING  
SPRAY AT A RATE OF 2 CM PER HOUR OR GREATER OCCURRING, AND MAY  
RAPIDLY ACCUMULATE ON VESSELS. FOR THE SMALL CRAFT ADVISORY,  
NORTHWEST WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT AND WAVES 3  
TO 4 FT OCCURRING.  
 
* WHERE...HURON ISLANDS TO MARQUETTE MI.  
 
* WHEN...FOR THE HEAVY FREEZING SPRAY WARNING, UNTIL 7 PM EST  
TUESDAY. FOR THE SMALL CRAFT ADVISORY, UNTIL 1 PM EST THIS  
AFTERNOON.  
 
* 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.  
 
 
 
 
 
LSZ249>251-192300-  
/O.CON.KMQT.UP.W.0002.000000T0000Z-250122T0000Z/  
/O.CON.KMQT.SC.Y.0010.000000T0000Z-250121T1200Z/  
MARQUETTE TO MUNISING MI-MUNISING TO GRAND MARAIS MI-  
GRAND MARAIS TO WHITEFISH POINT MI-  
955 AM EST SUN JAN 19 2025  
 
...HEAVY FREEZING SPRAY WARNING REMAINS IN EFFECT UNTIL 7 PM EST  
TUESDAY...  
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 7 AM EST  
TUESDAY...  
 
* WHAT...FOR THE HEAVY FREEZING SPRAY WARNING, HEAVY FREEZING  
SPRAY AT A RATE OF 2 CM PER HOUR OR GREATER OCCURRING, AND MAY  
RAPIDLY ACCUMULATE ON VESSELS. FOR THE SMALL CRAFT ADVISORY,  
NORTHWEST WINDS 10 TO 20 KT WITH GUSTS UP TO 30 KT AND WAVES 4  
TO 7 FT OCCURRING.  
 
* WHERE...MARQUETTE TO MUNISING MI, MUNISING TO GRAND MARAIS MI  
AND GRAND MARAIS TO WHITEFISH POINT MI.  
 
* WHEN...FOR THE HEAVY FREEZING SPRAY WARNING, UNTIL 7 PM EST  
TUESDAY. FOR THE SMALL CRAFT ADVISORY, UNTIL 7 AM EST TUESDAY.  
 
* 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.  
 
 
 
 
 
LSZ162-263-192300-  
/O.CON.KMQT.UP.W.0002.000000T0000Z-250122T0000Z/  
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND  
PORTAGE MN BEYOND 5NM-  
LAKE SUPERIOR FROM SAXON HARBOR WI TO UPPER ENTRANCE TO PORTAGE  
CANAL MI 5NM OFF SHORE TO THE US/CANADIAN BORDER INCLUDING ISLE  
ROYALE NATIONAL PARK-  
955 AM EST SUN JAN 19 2025 /855 AM CST SUN JAN 19 2025/  
 
...HEAVY FREEZING SPRAY WARNING REMAINS IN EFFECT UNTIL 7 PM EST  
/6 PM CST/ TUESDAY...  
 
* WHAT...HEAVY FREEZING SPRAY AT A RATE OF 2 CM PER HOUR OR  
GREATER OCCURRING, AND MAY RAPIDLY ACCUMULATE ON VESSELS.  
 
* WHERE...LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO  
GRAND PORTAGE MN BEYOND 5NM AND LAKE SUPERIOR FROM SAXON  
HARBOR WI TO UPPER ENTRANCE TO PORTAGE CANAL MI 5NM OFF SHORE  
TO THE US/CANADIAN BORDER INCLUDING ISLE ROYALE NATIONAL PARK.  
 
* WHEN...UNTIL 7 PM EST /6 PM CST/ TUESDAY.  
 
* 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.  
 
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.  
 
 
 
 
 
LSZ245>247-264>267-192300-  
/O.CON.KMQT.UP.W.0002.000000T0000Z-250122T0000Z/  
MANITOU ISLAND TO POINT ISABELLE MI-  
POINT ISABELLE TO LOWER ENTRANCE OF PORTAGE CANAL MI-  
LOWER ENTRANCE OF PORTAGE CANAL TO HURON ISLANDS MI INCLUDING  
KEWEENAW AND HURON BAYS-  
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU  
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-  
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI  
BEYOND 5NM FROM SHORE-  
LAKE SUPERIOR EAST OF A LINE FROM MANITOU ISLAND TO MARQUETTE MI  
AND WEST OF A LINE FROM GRAND MARAIS MI TO THE US/CANADIAN BORDER  
BEYOND 5NM FROM SHORE-  
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF  
SHORE TO THE US/CANADIAN BORDER-  
955 AM EST SUN JAN 19 2025  
 
...HEAVY FREEZING SPRAY WARNING REMAINS IN EFFECT UNTIL 7 PM EST  
TUESDAY...  
 
* WHAT...HEAVY FREEZING SPRAY AT A RATE OF 2 CM PER HOUR OR  
GREATER OCCURRING, AND MAY RAPIDLY ACCUMULATE ON VESSELS.  
 
* WHERE...PORTIONS OF CENTRAL, EASTERN AND WESTERN LAKE SUPERIOR.  
 
* WHEN...UNTIL 7 PM EST TUESDAY.  
 
* 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.  
 
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.  
 
 
 
 
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