Marine Weather Forecast from Environment Canada

Winds


Issued 03:00 AM EST
05 December 2020

Today Tonight and Sunday. Wind northeast 10 knots becoming light this afternoon then becoming southwest 10 overnight. Wind increasing to southeast 15 near noon Sunday.

Extended Forecast


Issued 03:00 AM EST
05 December 2020
Monday Wind northeast 15 knots diminishing to light in the morning then becoming southwest 15 late in the day.
Tuesday Wind southwest 15 knots increasing to southwest 20.
Wednesday Wind southwest 20 knots veering to northwest 20.

Waves


Issued 03:00 AM EST
05 December 2020

Today Tonight and Sunday. Waves one half to one metre subsiding to one half metre or less this morning then building to one Sunday morning.

Weather & Visibility


Issued 03:00 AM EST
05 December 2020

Today Tonight and Sunday.Flurries Sunday afternoon and evening.

Ice Forecast*


Issued 12:00 PM EST
4 December 2020

Today Tonight and Saturday Open water.

*Ice Forecast and Warnings also apply to U.S. waters

 

Lake Superior Mafor Forecast and Weather Conditions
From NOAA National Weather Service Weather Forecast Office



  
144  
FZUS63 KMQT 050818  
GLFLS  
 
OPEN LAKE FORECAST FOR LAKE SUPERIOR  
NATIONAL WEATHER SERVICE MARQUETTE MI  
318 AM EST SAT DEC 5 2020  
 
FOR WATERS BEYOND 5 NAUTICAL MILES OF SHORE ON LAKE SUPERIOR.  
 
WAVES ARE THE SIGNIFICANT WAVE HEIGHT - THE AVERAGE OF THE  
HIGHEST 1/3 OF THE WAVE SPECTRUM. OCCASIONAL WAVE HEIGHT IS THE  
AVERAGE OF THE HIGHEST 1/10 OF THE WAVE SPECTRUM.  
   
SYNOPSIS
 
A 30.2 INCH RIDGE WILL REMAIN OVER LAKE SUPERIOR  
TODAY AND TONIGHT. A WEAK TROUGH OF ABOUT 30.0 INCHES WILL MOVE  
OVER LAKE SUPERIOR ON SUNDAY, FOLLOWED BY 30.1 INCH RIDGING ON  
MONDAY. BROAD TROUGHING AROUND 29.9 INCHES WILL DEVELOP ACROSS  
NORTHERN ONTARIO AND LAKE SUPERIOR BY TUESDAY AFTERNOON. THIS  
TROUGH IS EXPECTED TO GRADUALLY DEEPEN TO 29.7 INCHES BY  
WEDNESDAY MORNING, THEN MOVE EAST AWAY FROM LAKE SUPERIOR  
WEDNESDAY NIGHT.  
 
LSZ162-051630-  
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND  
PORTAGE MN BEYOND 5NM-  
318 AM EST SAT DEC 5 2020 /218 AM CST SAT DEC 5 2020/  
   
EARLY THIS MORNING
 
EAST WINDS 5 TO 15 KNOTS. FLURRIES. WAVES  
CALM TO 2 FEET.    
TODAY
 
SOUTH WINDS 5 TO 15 KNOTS. FLURRIES IN THE MORNING.  
WAVES CALM TO 2 FEET.    
TONIGHT
 
SOUTHWEST WINDS 5 TO 15 KNOTS VEERING WEST BY  
MIDNIGHT. WAVES CALM TO 2 FEET.    
SUNDAY
 
WEST WINDS 10 TO 20 KNOTS VEERING NORTH BY MID  
AFTERNOON. WAVES CALM TO 2 FEET.    
SUNDAY NIGHT
 
NORTH WINDS 5 TO 15 KNOTS VEERING NORTHEAST AFTER  
MIDNIGHT. WAVES CALM TO 2 FEET.    
MONDAY
 
WEST WINDS 5 TO 15 KNOTS BECOMING SOUTHWEST 10 TO  
20 KNOTS IN THE AFTERNOON. WAVES CALM TO 2 FEET.    
MONDAY NIGHT
 
WEST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO  
20 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.    
TUESDAY
 
SOUTHWEST WINDS 10 TO 20 KNOTS VEERING WEST. WAVES  
BUILDING TO 1 TO 3 FEET.    
WEDNESDAY
 
WEST WINDS 10 TO 20 KNOTS. WAVES SUBSIDING TO CALM  
TO 2 FEET.  
 

 
 
LSZ263-051630-  
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-  
318 AM EST SAT DEC 5 2020  
   
EARLY THIS MORNING
 
NORTHEAST WINDS 5 TO 15 KNOTS. FLURRIES.  
WAVES CALM TO 2 FEET.    
TODAY
 
NORTHEAST WINDS 5 TO 15 KNOTS VEERING SOUTH. FLURRIES IN  
THE MORNING. WAVES CALM TO 2 FEET.    
TONIGHT
 
SOUTHWEST WINDS 5 TO 15 KNOTS BECOMING WEST 10 TO  
20 KNOTS LATE. WAVES CALM TO 2 FEET.    
SUNDAY
 
WEST WINDS 10 TO 20 KNOTS VEERING NORTH BY MID  
AFTERNOON. A SLIGHT CHANCE OF SNOW SHOWERS IN THE AFTERNOON.  
WAVES BUILDING TO 1 TO 3 FEET.    
SUNDAY NIGHT
 
NORTH WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO  
15 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.    
MONDAY
 
WEST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.    
MONDAY NIGHT
 
WEST WINDS 10 TO 20 KNOTS. WAVES CALM TO 2 FEET.    
TUESDAY
 
SOUTHWEST WINDS 10 TO 20 KNOTS VEERING WEST. WAVES  
BUILDING TO 2 TO 4 FEET.    
WEDNESDAY
 
WEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO  
20 KNOTS. WAVES SUBSIDING TO 1 TO 3 FEET.  
 

 
 
LSZ264-051630-  
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU  
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-  
318 AM EST SAT DEC 5 2020  
   
EARLY THIS MORNING
 
NORTHEAST WINDS 5 TO 15 KNOTS. WAVES CALM  
TO 2 FEET.    
TODAY
 
NORTH WINDS LESS THAN 10 KNOTS BACKING WEST BY LATE  
MORNING, THEN BACKING SOUTHWEST BY MID AFTERNOON. WAVES CALM TO  
2 FEET.    
TONIGHT
 
SOUTHWEST WINDS 5 TO 15 KNOTS VEERING WEST LATE. WAVES  
CALM TO 2 FEET.    
SUNDAY
 
WEST WINDS 10 TO 20 KNOTS BECOMING NORTHWEST 5 TO  
15 KNOTS BY LATE MORNING, THEN BECOMING NORTH 10 TO 20 KNOTS BY  
MID AFTERNOON. A SLIGHT CHANCE OF SNOW SHOWERS IN THE AFTERNOON.  
WAVES BUILDING TO 1 TO 3 FEET.    
SUNDAY NIGHT
 
NORTH WINDS 5 TO 15 KNOTS VEERING NORTHEAST AFTER  
MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.    
MONDAY
 
NORTHWEST WINDS LESS THAN 10 KNOTS BECOMING WEST 5 TO  
15 KNOTS IN THE AFTERNOON. WAVES CALM TO 2 FEET.    
MONDAY NIGHT
 
WEST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.    
TUESDAY
 
SOUTHWEST WINDS 5 TO 15 KNOTS VEERING WEST. WAVES  
BUILDING TO 2 TO 4 FEET.    
WEDNESDAY
 
WEST WINDS 10 TO 20 KNOTS VEERING NORTHWEST. WAVES  
SUBSIDING TO 1 TO 3 FEET.  
 

 
 
LSZ265-051630-  
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI  
BEYOND 5NM FROM SHORE-  
318 AM EST SAT DEC 5 2020  
   
EARLY THIS MORNING
 
NORTH WINDS 10 TO 20 KNOTS. FLURRIES. WAVES  
1 TO 3 FEET.    
TODAY
 
NORTH WINDS 5 TO 15 KNOTS BACKING NORTHWEST. A CHANCE OF  
DRIZZLE AND SNOW SHOWERS. WAVES SUBSIDING TO CALM TO 2 FEET.    
TONIGHT
 
SOUTHWEST WINDS 5 TO 15 KNOTS BECOMING WEST 10 TO  
20 KNOTS LATE. WAVES CALM TO 2 FEET.    
SUNDAY
 
WEST WINDS 10 TO 20 KNOTS VEERING NORTHWEST BY MID  
AFTERNOON. A SLIGHT CHANCE OF SNOW SHOWERS IN THE AFTERNOON.  
WAVES BUILDING TO 1 TO 3 FEET, THEN SUBSIDING TO CALM TO 2 FEET.    
SUNDAY NIGHT
 
NORTH WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO  
15 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF SNOW SHOWERS IN THE  
EVENING. WAVES CALM TO 2 FEET.    
MONDAY
 
WEST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.    
MONDAY NIGHT
 
WEST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO  
20 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.    
TUESDAY
 
WEST WINDS 10 TO 20 KNOTS. WAVES CALM TO 2 FEET.    
WEDNESDAY
 
WEST WINDS 15 TO 25 KNOTS. WAVES BUILDING TO 1 TO  
3 FEET, THEN SUBSIDING TO CALM TO 2 FEET.  
 

 
 
LSZ266-051630-  
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-  
318 AM EST SAT DEC 5 2020  
   
EARLY THIS MORNING
 
NORTH WINDS 10 TO 20 KNOTS. FLURRIES. WAVES  
2 TO 4 FEET SUBSIDING TO 1 TO 3 FEET.    
TODAY
 
NORTH WINDS 5 TO 15 KNOTS. A CHANCE OF SNOW SHOWERS IN  
THE MORNING. WAVES SUBSIDING TO CALM TO 2 FEET.    
TONIGHT
 
NORTH WINDS 5 TO 15 KNOTS BACKING SOUTHWEST BY  
MIDNIGHT, THEN BECOMING WEST 10 TO 20 KNOTS LATE. WAVES CALM TO  
2 FEET.    
SUNDAY
 
WEST WINDS 10 TO 20 KNOTS VEERING NORTHWEST BY MID  
AFTERNOON. A SLIGHT CHANCE OF SNOW SHOWERS. WAVES BUILDING TO  
1 TO 3 FEET.    
SUNDAY NIGHT
 
NORTH WINDS 5 TO 15 KNOTS VEERING NORTHEAST AFTER  
MIDNIGHT. A SLIGHT CHANCE OF SNOW SHOWERS IN THE EVENING. WAVES  
SUBSIDING TO CALM TO 2 FEET.    
MONDAY
 
WEST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.    
MONDAY NIGHT
 
WEST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.    
TUESDAY
 
SOUTHWEST WINDS 10 TO 20 KNOTS VEERING WEST. WAVES  
BUILDING TO 2 TO 4 FEET.    
WEDNESDAY
 
WEST WINDS 15 TO 25 KNOTS VEERING NORTHWEST. WAVES  
2 TO 4 FEET.  
 

 
 
LSZ267-051630-  
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF  
SHORE TO THE US/CANADIAN BORDER-  
318 AM EST SAT DEC 5 2020  
   
EARLY THIS MORNING
 
NORTH WINDS 10 TO 20 KNOTS. FLURRIES. WAVES  
1 TO 3 FEET.    
TODAY
 
NORTH WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO 15 KNOTS.  
WAVES SUBSIDING TO CALM TO 2 FEET.    
TONIGHT
 
NORTH WINDS 5 TO 15 KNOTS BACKING WEST BY MIDNIGHT.  
WAVES CALM TO 2 FEET.    
SUNDAY
 
SOUTHWEST WINDS 10 TO 20 KNOTS. A SLIGHT CHANCE OF SNOW  
SHOWERS. WAVES CALM TO 2 FEET.    
SUNDAY NIGHT
 
NORTHEAST WINDS 5 TO 15 KNOTS. WAVES CALM TO  
2 FEET.    
MONDAY
 
NORTHEAST WINDS 5 TO 15 KNOTS BACKING NORTHWEST IN THE  
AFTERNOON. WAVES CALM TO 2 FEET.    
MONDAY NIGHT
 
NORTHWEST WINDS 10 TO 20 KNOTS BACKING WEST AFTER  
MIDNIGHT. WAVES CALM TO 2 FEET.    
TUESDAY
 
SOUTHWEST WINDS 10 TO 20 KNOTS. WAVES BUILDING TO 1 TO  
3 FEET.    
WEDNESDAY
 
WEST WINDS 10 TO 20 KNOTS BECOMING NORTHWEST 15 TO  
25 KNOTS. WAVES BUILDING TO 2 TO 4 FEET.  
 

 
 
LSZ261-051630-  
MAFOR 0510/  
SUPERIOR WEST 11200 14400 11500 11600 11610. WAVES 2 FEET OR  
LESS.  
 
SUPERIOR NORTH CENTRAL 11100 11800 11700 12600 11500 11510 11610.  
WAVES 2 FEET OR LESS.  
 
SUPERIOR SOUTH CENTRAL 11810 14800 11600 12500. A CHANCE OF  
DRIZZLE AND SNOW SHOWERS THIS MORNING. WAVES 3 FEET OR LESS.  
 
SUPERIOR EAST 11810 11110 11100 13800 12600. WAVES 3 FEET OR LESS.  
 

 
 
RJC  
 
EXPERIMENTAL MODERNIZED OPEN LAKE FORECAST IS AVAILABLE ONLINE AT  
WEATHER.GOV/MQT/GLFTABLE  
 
GRAPHICAL MARINE FORECASTS ARE AVAILABLE ONLINE AT:  
WEATHER.GOV/GREATLAKES  
 




Random Weather Facts

Canadian Mind-Boggling Facts
The Only Walled City in North America, Quebec City has a special feature that makes it unique in Canada (and the U.S., for that matter): it has walls. No, really, Quebec City is the only city north of Mexico that still has fortified walls — known as the Fortifications of Quebec. First the French and later the English built up Quebec City's fortifications between the 17th and the 19th centuries. Quebec's entire historic district, including the ramparts, has since been declared a World Heritage Site by UNESCO.