401  
WHUS73 KMQT 272126  
MWWMQT  
 
URGENT - MARINE WEATHER MESSAGE  
NATIONAL WEATHER SERVICE MARQUETTE MI  
426 PM EST THU FEB 27 2020  
 
LSZ243-244-264-280530-  
/O.EXT.KMQT.UP.W.0008.000000T0000Z-200229T0000Z/  
/O.EXB.KMQT.GL.W.0016.200228T0000Z-200229T0000Z/  
UPPER ENTRANCE OF PORTAGE CANAL TO EAGLE RIVER MI-  
EAGLE RIVER TO MANITOU ISLAND MI-  
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU  
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-  
426 PM EST THU FEB 27 2020  
 
...HEAVY FREEZING SPRAY WARNING NOW IN EFFECT UNTIL 7 PM EST  
FRIDAY...   
..GALE WARNING IN EFFECT UNTIL 7 PM EST FRIDAY
 
 
* WHAT...HEAVY FREEZING SPRAY AT A RATE OF 2 CM PER HOUR OR  
GREATER OCCURRING, AND MAY RAPIDLY ACCUMULATE ON VESSELS.  
NORTH WINDS 20 TO 25 KT WITH GUSTS UP TO 35 KT AND WAVES 6 TO  
9 FEET EXPECTED.  
 
* WHERE...UPPER ENTRANCE OF PORTAGE CANAL TO EAGLE RIVER MI,  
EAGLE RIVER TO MANITOU ISLAND MI AND LAKE SUPERIOR FROM UPPER  
ENTRANCE TO PORTAGE CANAL TO MANITOU ISLAND MI 5NM OFF SHORE  
TO THE US/CANADIAN BORDER.  
 
* WHEN...UNTIL 7 PM EST FRIDAY.  
 
* 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.  
 

 
 

 
 
LSZ245>248-265-280530-  
/O.EXB.KMQT.UP.W.0008.000000T0000Z-200229T0600Z/  
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-HURON ISLANDS TO MARQUETTE MI-  
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI  
BEYOND 5NM FROM SHORE-  
426 PM EST THU FEB 27 2020  
 
...HEAVY FREEZING SPRAY WARNING IN EFFECT UNTIL 1 AM EST  
SATURDAY...  
 
* WHAT...HEAVY FREEZING SPRAY AT A RATE OF 2 CM PER HOUR OR  
GREATER OCCURRING, AND MAY RAPIDLY ACCUMULATE ON VESSELS.  
 
* WHERE...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,  
HURON ISLANDS TO MARQUETTE MI AND LAKE SUPERIOR WEST OF LINE  
FROM MANITOU ISLAND TO MARQUETTE MI BEYOND 5NM FROM SHORE.  
 
* WHEN...UNTIL 1 AM EST SATURDAY.  
 
* 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.  
 

 
 

 
 
LSZ249-250-266-280530-  
/O.EXT.KMQT.GL.W.0016.000000T0000Z-200229T0300Z/  
/O.EXT.KMQT.UP.W.0008.000000T0000Z-200229T0000Z/  
MARQUETTE TO MUNISING MI-MUNISING TO GRAND MARAIS MI-  
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-  
426 PM EST THU FEB 27 2020  
   
..GALE WARNING NOW IN EFFECT UNTIL 10 PM EST FRIDAY
 
 
...HEAVY FREEZING SPRAY WARNING NOW IN EFFECT UNTIL 7 PM EST  
FRIDAY...  
 
* WHAT...HEAVY FREEZING SPRAY AT A RATE OF 2 CM PER HOUR OR  
GREATER OCCURRING, AND MAY RAPIDLY ACCUMULATE ON VESSELS.  
NORTHWEST WINDS 25 TO 30 KT WITH GUSTS UP TO 40 KT AND WAVES 8  
TO 13 FEET OCCURRING.  
 
* WHERE...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, MARQUETTE TO  
MUNISING MI AND MUNISING TO GRAND MARAIS MI.  
 
* WHEN...FOR THE HEAVY FREEZING SPRAY WARNING, UNTIL 7 PM EST  
FRIDAY. FOR THE GALE WARNING, UNTIL 10 PM EST FRIDAY.  
 
* 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.  
 

 
 

 
 
LSZ251-267-280530-  
/O.EXT.KMQT.GL.W.0016.000000T0000Z-200229T0300Z/  
/O.EXT.KMQT.UP.W.0008.000000T0000Z-200229T0600Z/  
GRAND MARAIS TO WHITEFISH POINT MI-  
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF  
SHORE TO THE US/CANADIAN BORDER-  
426 PM EST THU FEB 27 2020  
   
..GALE WARNING NOW IN EFFECT UNTIL 10 PM EST FRIDAY
 
 
...HEAVY FREEZING SPRAY WARNING NOW IN EFFECT UNTIL 1 AM EST  
SATURDAY...  
 
* WHAT...HEAVY FREEZING SPRAY AT A RATE OF 2 CM PER HOUR OR  
GREATER OCCURRING, AND MAY RAPIDLY ACCUMULATE ON VESSELS.  
NORTHWEST WINDS 25 TO 30 KT WITH GUSTS UP TO 40 KT AND WAVES 8  
TO 13 FEET OCCURRING.  
 
* WHERE...LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT  
MI 5NM OFF SHORE TO THE US/CANADIAN BORDER AND GRAND MARAIS TO  
WHITEFISH POINT MI.  
 
* WHEN...FOR THE HEAVY FREEZING SPRAY WARNING, UNTIL 1 AM EST  
SATURDAY. FOR THE GALE WARNING, UNTIL 10 PM EST FRIDAY.  
 
* 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.  
 

 
 

 
 
LMZ248-250-280530-  
/O.EXT.KMQT.SC.Y.0022.000000T0000Z-200229T0300Z/  
SEUL CHOIX POINT TO POINT DETOUR MI-  
5NM EAST OF A LINE FROM FAIRPORT MI TO ROCK ISLAND PASSAGE-  
426 PM EST THU FEB 27 2020  
   
..SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 10 PM EST FRIDAY
 
 
* WHAT...NORTHWEST WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT  
OCCURRING.  
 
* WHERE...5NM EAST OF A LINE FROM FAIRPORT MI TO ROCK ISLAND  
PASSAGE AND SEUL CHOIX POINT TO POINT DETOUR MI.  
 
* WHEN...UNTIL 10 PM EST FRIDAY.  
 
* 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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