227  
WHUS73 KMQT 282146  
MWWMQT  
 
URGENT - MARINE WEATHER MESSAGE  
NATIONAL WEATHER SERVICE MARQUETTE MI  
446 PM EST SUN FEB 28 2021  
 
LSZ240>242-263-010600-  
/O.EXT.KMQT.UP.W.0005.210301T0000Z-210302T0000Z/  
/O.CON.KMQT.GL.W.0006.210301T0900Z-210301T1500Z/  
SAXON HARBOR WI TO BLACK RIVER MI-BLACK RIVER TO ONTONAGON MI-  
ONTONAGON TO UPPER ENTRANCE OF PORTAGE CANAL MI-  
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-  
446 PM EST SUN FEB 28 2021 /346 PM CST SUN FEB 28 2021/  
 
...HEAVY FREEZING SPRAY WARNING NOW IN EFFECT UNTIL 7 PM EST  
/6 PM CST/ MONDAY...  
...GALE WARNING REMAINS IN EFFECT FROM 4 AM EST /3 AM CST/ TO  
10 AM EST /9 AM CST/ MONDAY...  
 
* WHAT...FOR THE HEAVY FREEZING SPRAY WARNING, HEAVY FREEZING  
SPRAY AT A RATE OF 2 CM PER HOUR OR GREATER EXPECTED, AND MAY  
RAPIDLY ACCUMULATE ON VESSELS. FOR THE GALE WARNING, NORTHWEST  
WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT AND WAVES 2 TO 5 FT  
EXPECTED.  
 
* WHERE...ONTONAGON TO UPPER ENTRANCE OF PORTAGE CANAL MI, 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, BLACK RIVER TO ONTONAGON MI AND  
SAXON HARBOR WI TO BLACK RIVER MI.  
 
* WHEN...FOR THE HEAVY FREEZING SPRAY WARNING, UNTIL 7 PM EST /6  
PM CST/ MONDAY. FOR THE GALE WARNING, FROM 4 AM EST /3 AM CST/  
TO 10 AM EST /9 AM CST/ MONDAY.  
 
* 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.  
 

 
 

 
 
LSZ249>251-266-267-010600-  
/O.CON.KMQT.GL.W.0006.210228T2200Z-210302T0000Z/  
/O.EXT.KMQT.UP.W.0005.210301T0300Z-210302T0600Z/  
MARQUETTE TO MUNISING MI-MUNISING TO GRAND MARAIS MI-  
GRAND MARAIS TO WHITEFISH POINT 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-  
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF  
SHORE TO THE US/CANADIAN BORDER-  
446 PM EST SUN FEB 28 2021  
   
..GALE WARNING REMAINS IN EFFECT UNTIL 7 PM EST MONDAY
 
 
...HEAVY FREEZING SPRAY WARNING NOW IN EFFECT FROM 10 PM THIS  
EVENING TO 1 AM EST TUESDAY...  
 
* WHAT...FOR THE HEAVY FREEZING SPRAY WARNING, HEAVY FREEZING  
SPRAY AT A RATE OF 2 CM PER HOUR OR GREATER EXPECTED, AND MAY  
RAPIDLY ACCUMULATE ON VESSELS. FOR THE GALE WARNING, NORTHWEST  
WINDS 25 TO 35 KT WITH GUSTS UP TO 40 KT AND WAVES 9 TO 14 FT  
EXPECTED.  
 
* WHERE...LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT  
MI 5NM OFF SHORE TO THE US/CANADIAN BORDER, 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, MUNISING TO GRAND MARAIS  
MI AND GRAND MARAIS TO WHITEFISH POINT MI.  
 
* WHEN...FOR THE HEAVY FREEZING SPRAY WARNING, FROM 10 PM THIS  
EVENING TO 1 AM EST TUESDAY. FOR THE GALE WARNING, UNTIL 7 PM  
EST MONDAY.  
 
* 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.  
 

 
 

 
 
LSZ243>248-264-265-010600-  
/O.EXT.KMQT.UP.W.0005.210301T0300Z-210302T0600Z/  
/O.CON.KMQT.GL.W.0006.210301T0600Z-210301T1800Z/  
UPPER ENTRANCE OF PORTAGE CANAL TO EAGLE RIVER MI-  
EAGLE RIVER TO MANITOU ISLAND MI-  
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 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-  
446 PM EST SUN FEB 28 2021  
 
...HEAVY FREEZING SPRAY WARNING NOW IN EFFECT FROM 10 PM THIS  
EVENING TO 1 AM EST TUESDAY...   
..GALE WARNING REMAINS IN EFFECT FROM 1 AM TO 1 PM EST MONDAY
 
 
* WHAT...FOR THE HEAVY FREEZING SPRAY WARNING, HEAVY FREEZING  
SPRAY AT A RATE OF 2 CM PER HOUR OR GREATER EXPECTED, AND MAY  
RAPIDLY ACCUMULATE ON VESSELS. FOR THE GALE WARNING, NORTHWEST  
WINDS 15 TO 25 KT WITH GUSTS UP TO 35 KT AND WAVES 5 TO 8 FT  
EXPECTED.  
 
* WHERE...PORTIONS OF CENTRAL AND WESTERN LAKE SUPERIOR.  
 
* WHEN...FOR THE HEAVY FREEZING SPRAY WARNING, FROM 10 PM THIS  
EVENING TO 1 AM EST TUESDAY. FOR THE GALE WARNING, FROM 1 AM  
TO 1 PM EST MONDAY.  
 
* 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.  
 

 
 

 
 
LSZ162-010600-  
/O.EXT.KMQT.UP.W.0005.210301T0000Z-210302T0000Z/  
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND  
PORTAGE MN BEYOND 5NM-  
446 PM EST SUN FEB 28 2021 /346 PM CST SUN FEB 28 2021/  
 
...HEAVY FREEZING SPRAY WARNING NOW IN EFFECT UNTIL 7 PM EST  
/6 PM CST/ MONDAY...  
 
* WHAT...HEAVY FREEZING SPRAY AT A RATE OF 2 CM PER HOUR OR  
GREATER EXPECTED, AND MAY RAPIDLY ACCUMULATE ON VESSELS.  
 
* WHERE...LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO  
GRAND PORTAGE MN BEYOND 5NM.  
 
* WHEN...UNTIL 7 PM EST /6 PM CST/ MONDAY.  
 
* 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.  
 

 
 

 
 
LMZ248-250-010600-  
/O.EXT.KMQT.SC.Y.0016.210228T2200Z-210301T2100Z/  
SEUL CHOIX POINT TO POINT DETOUR MI-  
5NM EAST OF A LINE FROM FAIRPORT MI TO ROCK ISLAND PASSAGE-  
446 PM EST SUN FEB 28 2021  
   
..SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 4 PM EST MONDAY
 
 
* WHAT...NORTHWEST WINDS 10 TO 20 KT WITH GUSTS UP TO 30 KT  
EXPECTED.  
 
* WHERE...5NM EAST OF A LINE FROM FAIRPORT MI TO ROCK ISLAND  
PASSAGE AND SEUL CHOIX POINT TO POINT DETOUR MI.  
 
* WHEN...UNTIL 4 PM EST MONDAY.  
 
* IMPACTS...CONDITIONS WILL BE HAZARDOUS TO SMALL CRAFT.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
INEXPERIENCED MARINERS, ESPECIALLY THOSE OPERATING SMALLER  
VESSELS, SHOULD AVOID NAVIGATING IN HAZARDOUS CONDITIONS.  
 

 
 

 
 
CLICK HERE TO GO TO PREVIOUS BULLETINS.

The Nexlab MI Page Main Text Page