Marine Weather Forecast from Environment Canada

Winds


Issued 03:00 AM EST
02 March 2024

Today Tonight and Sunday. Gale warning in effect. Wind south 20 knots diminishing to south 15 early this morning and to southeast 10 this afternoon. Wind increasing to southeast 15 this evening and to southeast 20 near midnight. Wind increasing to southeast 30 Sunday afternoon and to southeast 35 Sunday evening.

Extended Forecast


Issued 03:00 AM EST
02 March 2024
Monday Wind southeast 30 knots veering to southwest 25 in the morning then diminishing to southwest 15 in the afternoon.
Tuesday Wind west 15 knots.
Wednesday Wind northwest 15 knots increasing to southeast 20 late in the day.

Waves


Issued 03:00 AM EST
02 March 2024

Today Tonight and Sunday. Waves 2 metres subsiding to 0.5 to 1 late this morning then building to 1 to 1.5 overnight. Waves building to 2 near noon Sunday and to 2 to 3 Sunday evening.

Ice Forecast*


Issued 12:00 PM EST
1 March 2024

Today Tonight and Saturday Open water except 2 tenths new lake ice along parts of the shore.

*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



  
920  
FZUS63 KMQT 020851  
GLFLS  
 
OPEN LAKE FORECAST FOR LAKE SUPERIOR  
NATIONAL WEATHER SERVICE MARQUETTE MI  
351 AM EST SAT MAR 2 2024  
 
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 29.8 INCH TROUGH OVER WESTERN LAKE SUPERIOR THIS  
MORNING WEAKENS TO 30.0 INCHES TODAY AS A 29.2 INCH LOW DEVELOPS  
ON THE LEE SIDE OF THE NORTHERN ROCKIES. THE LOW THEN CONTINUES  
NORTHEAST THROUGH THE NORTHERN PLAINS SUNDAY AND MANITOBA SUNDAY  
NIGHT INTO MONDAY AS IT WEAKENS TO 29.7 INCHES. 30.0 INCH RIDGING  
EXTENDING FROM THE NORTHERN PLAINS BUILDS IN BEHIND THE LOW  
MONDAY NIGHT. HIGH PRESSURE CONTINUES INTO NORTHERN ONTARIO TO THE  
MIDDLE OF NEXT WEEK, GRADUALLY INCREASING RIDGING TO 30.4 INCHES  
BY WEDNESDAY ACROSS THE UPPER GREAT LAKES. THE RIDGING HOLDS ON  
UNTIL THURSDAY MORNING.  
 
LSZ162-021700-  
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND  
PORTAGE MN BEYOND 5NM-  
351 AM EST SAT MAR 2 2024 /251 AM CST SAT MAR 2 2024/  
   
EARLY THIS MORNING
 
SOUTHWEST WINDS 5 TO 15 KNOTS. WAVES 1 TO  
3 FEET SUBSIDING TO CALM TO 2 FEET.    
TODAY
 
SOUTHWEST WINDS 5 TO 15 KNOTS BECOMING EAST 10 TO  
20 KNOTS BY LATE MORNING, THEN INCREASING TO 20 TO 30 KNOTS BY  
MID AFTERNOON. WAVES BUILDING TO 3 TO 5 FEET OCCASIONALLY TO  
7 FEET.    
TONIGHT
 
EAST WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO  
25 KNOTS LATE. A SLIGHT CHANCE OF RAIN SHOWERS AFTER MIDNIGHT.  
WAVES BUILDING TO 6 TO 9 FEET OCCASIONALLY TO 11 FEET, THEN  
SUBSIDING TO 3 TO 6 FEET OCCASIONALLY TO 8 FEET.    
SUNDAY
 
EAST WINDS 15 TO 25 KNOTS. A CHANCE OF RAIN SHOWERS.  
WAVES SUBSIDING TO 3 TO 6 FEET OCCASIONALLY TO 8 FEET.    
SUNDAY NIGHT
 
SOUTHWEST WINDS 15 TO 25 KNOTS. A CHANCE OF RAIN  
SHOWERS IN THE EVENING. WAVES SUBSIDING TO 2 TO 4 FEET, THEN  
BUILDING TO 3 TO 6 FEET OCCASIONALLY TO 8 FEET.    
MONDAY
 
SOUTHWEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO  
20 KNOTS IN THE AFTERNOON. WAVES BUILDING TO 3 TO 6 FEET  
OCCASIONALLY TO 8 FEET.    
MONDAY NIGHT
 
WEST WINDS 10 TO 20 KNOTS VEERING NORTHWEST AFTER  
MIDNIGHT. WAVES SUBSIDING TO 1 TO 3 FEET.    
TUESDAY
 
WEST WINDS 10 TO 20 KNOTS BECOMING NORTHEAST 15 TO  
25 KNOTS. WAVES SUBSIDING TO CALM TO 2 FEET, THEN BUILDING TO  
1 TO 3 FEET.    
WEDNESDAY
 
EAST WINDS 15 TO 25 KNOTS. WAVES BUILDING TO 2 TO  
4 FEET, THEN SUBSIDING TO 1 TO 3 FEET.  
 
NOTE, WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.  
 

 
 
LSZ263-021700-  
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-  
351 AM EST SAT MAR 2 2024  
   
EARLY THIS MORNING
 
SOUTHWEST WINDS 10 TO 20 KNOTS. WAVES 2 TO  
4 FEET SUBSIDING TO 1 TO 3 FEET.    
TODAY
 
SOUTHWEST WINDS 5 TO 15 KNOTS BECOMING NORTHEAST 10 TO  
20 KNOTS BY LATE MORNING, THEN INCREASING TO 15 TO 25 KNOTS BY  
MID AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET, THEN BUILDING  
TO 3 TO 5 FEET OCCASIONALLY TO 7 FEET.    
TONIGHT
 
EAST WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO  
25 KNOTS BY MIDNIGHT, THEN BECOMING SOUTHEAST 10 TO 20 KNOTS  
LATE. WAVES BUILDING TO 4 TO 7 FEET OCCASIONALLY TO 9 FEET, THEN  
SUBSIDING TO 2 TO 4 FEET.    
SUNDAY
 
SOUTHEAST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO  
25 KNOTS. A SLIGHT CHANCE OF RAIN SHOWERS. WAVES BUILDING TO 4 TO  
7 FEET OCCASIONALLY TO 9 FEET.    
SUNDAY NIGHT
 
SOUTHWEST WINDS 20 TO 30 KNOTS DIMINISHING TO  
15 TO 25 KNOTS AFTER MIDNIGHT. RAIN SHOWERS LIKELY IN THE  
EVENING, THEN A SLIGHT CHANCE OF RAIN SHOWERS AFTER MIDNIGHT.  
WAVES SUBSIDING TO 3 TO 6 FEET OCCASIONALLY TO 8 FEET.    
MONDAY
 
SOUTHWEST WINDS 10 TO 20 KNOTS. WAVES SUBSIDING TO 3 TO  
5 FEET OCCASIONALLY TO 7 FEET.    
MONDAY NIGHT
 
WEST WINDS 10 TO 20 KNOTS VEERING NORTHWEST AFTER  
MIDNIGHT. WAVES SUBSIDING TO 1 TO 3 FEET.    
TUESDAY
 
WEST WINDS 10 TO 20 KNOTS VEERING NORTHEAST. WAVES  
1 TO 3 FEET.    
WEDNESDAY
 
EAST WINDS 10 TO 20 KNOTS VEERING SOUTHEAST. WAVES  
BUILDING TO 2 TO 4 FEET.  
 
NOTE, WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.  
 

 
 
LSZ264-021700-  
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU  
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-  
351 AM EST SAT MAR 2 2024  
   
EARLY THIS MORNING
 
SOUTHWEST WINDS 10 TO 20 KNOTS. WAVES 3 TO  
5 FEET OCCASIONALLY TO 7 FEET SUBSIDING TO 2 TO 4 FEET.    
TODAY
 
WEST WINDS 10 TO 20 KNOTS BECOMING NORTH 5 TO 15 KNOTS  
BY LATE MORNING, THEN BECOMING NORTHEAST 10 TO 20 KNOTS BY MID  
AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET, THEN BUILDING TO  
1 TO 3 FEET.    
TONIGHT
 
EAST WINDS 15 TO 25 KNOTS VEERING SOUTHEAST LATE.  
WAVES BUILDING TO 3 TO 6 FEET OCCASIONALLY TO 8 FEET.    
SUNDAY
 
SOUTHEAST WINDS 20 TO 30 KNOTS. A SLIGHT CHANCE OF RAIN  
SHOWERS. WAVES BUILDING TO 6 TO 9 FEET OCCASIONALLY TO 11 FEET.    
SUNDAY NIGHT
 
SOUTH WINDS 20 TO 30 KNOTS VEERING SOUTHWEST  
AFTER MIDNIGHT. RAIN SHOWERS LIKELY IN THE EVENING, THEN A SLIGHT  
CHANCE OF RAIN SHOWERS AFTER MIDNIGHT. WAVES BUILDING TO 7 TO  
10 FEET OCCASIONALLY TO 13 FEET, THEN SUBSIDING TO 4 TO 7 FEET  
OCCASIONALLY TO 9 FEET.    
MONDAY
 
SOUTHWEST WINDS 10 TO 20 KNOTS. A CHANCE OF SNOW IN THE  
AFTERNOON. WAVES SUBSIDING TO 2 TO 4 FEET.    
MONDAY NIGHT
 
WEST WINDS 10 TO 20 KNOTS VEERING NORTHWEST AFTER  
MIDNIGHT. WAVES 2 TO 4 FEET.    
TUESDAY
 
WEST WINDS 10 TO 20 KNOTS VEERING NORTH. WAVES  
SUBSIDING TO 1 TO 3 FEET.    
WEDNESDAY
 
EAST WINDS 10 TO 20 KNOTS VEERING SOUTHEAST. WAVES  
BUILDING TO 2 TO 4 FEET.  
 
NOTE, WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.  
 

 
 
LSZ265-021700-  
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI  
BEYOND 5NM FROM SHORE-  
351 AM EST SAT MAR 2 2024  
   
EARLY THIS MORNING
 
SOUTHWEST WINDS 10 TO 20 KNOTS. WAVES CALM  
TO 2 FEET.    
TODAY
 
SOUTHWEST WINDS 5 TO 15 KNOTS BACKING SOUTHEAST BY LATE  
MORNING, THEN BECOMING EAST 10 TO 20 KNOTS BY MID AFTERNOON.  
WAVES CALM TO 2 FEET.    
TONIGHT
 
SOUTHEAST WINDS 15 TO 25 KNOTS. WAVES BUILDING TO 3 TO  
5 FEET OCCASIONALLY TO 7 FEET.    
SUNDAY
 
SOUTHEAST WINDS 15 TO 25 KNOTS INCREASING TO 20 TO  
30 KNOTS. WAVES BUILDING TO 4 TO 7 FEET OCCASIONALLY TO 9 FEET.    
SUNDAY NIGHT
 
SOUTH WINDS 15 TO 25 KNOTS BECOMING SOUTHWEST  
10 TO 20 KNOTS AFTER MIDNIGHT. RAIN SHOWERS LIKELY IN THE  
EVENING, THEN A SLIGHT CHANCE OF RAIN SHOWERS AFTER MIDNIGHT.  
WAVES SUBSIDING TO 1 TO 3 FEET.    
MONDAY
 
SOUTHWEST WINDS 10 TO 20 KNOTS VEERING WEST IN THE  
AFTERNOON. A CHANCE OF RAIN. WAVES SUBSIDING TO CALM TO 2 FEET.    
MONDAY NIGHT
 
WEST WINDS 10 TO 20 KNOTS BECOMING NORTHWEST  
15 TO 25 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.    
TUESDAY
 
NORTHWEST WINDS 15 TO 25 KNOTS VEERING NORTH. WAVES  
CALM TO 2 FEET.    
WEDNESDAY
 
EAST WINDS 15 TO 25 KNOTS VEERING SOUTHEAST. WAVES  
BUILDING TO 1 TO 3 FEET.  
 
NOTE, WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.  
 

 
 
LSZ266-021700-  
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-  
351 AM EST SAT MAR 2 2024  
   
EARLY THIS MORNING
 
SOUTHWEST WINDS 15 TO 25 KNOTS. WAVES 3 TO  
6 FEET OCCASIONALLY TO 8 FEET.    
TODAY
 
SOUTHWEST WINDS 15 TO 25 KNOTS BECOMING SOUTH 5 TO  
15 KNOTS BY LATE MORNING, THEN BACKING SOUTHEAST BY MID  
AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.    
TONIGHT
 
SOUTHEAST WINDS 15 TO 25 KNOTS. WAVES BUILDING TO 3 TO  
6 FEET OCCASIONALLY TO 8 FEET.    
SUNDAY
 
SOUTHEAST WINDS 20 TO 30 KNOTS INCREASING TO 30 KNOTS  
WITH A FEW GALE FORCE GUSTS TO 35 KNOTS POSSIBLE. WAVES BUILDING  
TO 6 TO 9 FEET OCCASIONALLY TO 11 FEET.    
SUNDAY NIGHT
 
SOUTH WINDS 20 TO 30 KNOTS VEERING SOUTHWEST  
AFTER MIDNIGHT. RAIN SHOWERS LIKELY IN THE EVENING, THEN A SLIGHT  
CHANCE OF RAIN SHOWERS AFTER MIDNIGHT. WAVES SUBSIDING TO 4 TO  
7 FEET OCCASIONALLY TO 9 FEET.    
MONDAY
 
SOUTHWEST WINDS 10 TO 20 KNOTS VEERING WEST IN THE  
AFTERNOON. A CHANCE OF RAIN. WAVES SUBSIDING TO 2 TO 4 FEET.    
MONDAY NIGHT
 
WEST WINDS 10 TO 20 KNOTS BECOMING NORTHWEST  
15 TO 25 KNOTS AFTER MIDNIGHT. A CHANCE OF RAIN AND SNOW. WAVES  
2 TO 4 FEET.    
TUESDAY
 
NORTHWEST WINDS 15 TO 25 KNOTS VEERING NORTH. WAVES  
SUBSIDING TO 1 TO 3 FEET.    
WEDNESDAY
 
EAST WINDS 15 TO 25 KNOTS VEERING SOUTHEAST. WAVES  
BUILDING TO 2 TO 4 FEET.  
 
NOTE, WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.  
 

 
 
LSZ267-021700-  
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF  
SHORE TO THE US/CANADIAN BORDER-  
351 AM EST SAT MAR 2 2024  
   
EARLY THIS MORNING
 
SOUTHWEST WINDS 15 TO 25 KNOTS. WAVES 3 TO  
6 FEET OCCASIONALLY TO 8 FEET.    
TODAY
 
SOUTHWEST WINDS 15 TO 25 KNOTS BECOMING SOUTH 10 TO  
20 KNOTS BY LATE MORNING, THEN BACKING SOUTHEAST BY MID  
AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.    
TONIGHT
 
SOUTHEAST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO  
25 KNOTS BY MIDNIGHT. WAVES BUILDING TO 2 TO 4 FEET.    
SUNDAY
 
SOUTHEAST WINDS 15 TO 25 KNOTS INCREASING TO 30 KNOTS  
WITH A FEW GALE FORCE GUSTS TO 35 KNOTS POSSIBLE. WAVES BUILDING  
TO 6 TO 9 FEET OCCASIONALLY TO 11 FEET.    
SUNDAY NIGHT
 
SOUTHEAST WINDS TO 30 KNOTS WITH A FEW GALE FORCE  
GUSTS TO 35 KNOTS POSSIBLE BECOMING SOUTH 15 TO 25 KNOTS AFTER  
MIDNIGHT. A CHANCE OF RAIN SHOWERS. WAVES SUBSIDING TO 2 TO 4  
FEET.    
MONDAY
 
SOUTH WINDS 10 TO 20 KNOTS BACKING NORTH IN THE  
AFTERNOON. A CHANCE OF RAIN IN THE MORNING, THEN RAIN LIKELY IN  
THE AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.    
MONDAY NIGHT
 
NORTH WINDS 10 TO 20 KNOTS BECOMING NORTHWEST  
15 TO 25 KNOTS AFTER MIDNIGHT. A CHANCE OF RAIN, POSSIBLY MIXED  
WITH SNOW. WAVES BUILDING TO 1 TO 3 FEET.    
TUESDAY
 
NORTHWEST WINDS 15 TO 25 KNOTS VEERING NORTH. WAVES  
BUILDING TO 2 TO 4 FEET, THEN SUBSIDING TO 1 TO 3 FEET.    
WEDNESDAY
 
NORTHEAST WINDS 15 TO 25 KNOTS VEERING EAST. WAVES  
SUBSIDING TO CALM TO 2 FEET, THEN BUILDING TO 1 TO 3 FEET.  
 
NOTE, WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.  
 

 
 
LSZ261-021700-  
MAFOR 0210/  
SUPERIOR WEST 11510 11610 11210 11130 11240 12240 11230. WAVES 1  
TO 3 FEET BUILDING TO 2 TO 4 FEET TODAY. WAVES 5 TO 8 FEET  
TONIGHT.  
 
SUPERIOR NORTH CENTRAL 11520 11620 11810 11110 11120 11230 12330.  
WAVES 3 TO 5 FEET SUBSIDING TO 1 TO 3 FEET TODAY. WAVES 1 TO 3  
FEET BUILDING TO 3 TO 5 FEET TONIGHT.  
 
SUPERIOR SOUTH CENTRAL 12420 11410 11310 11220 13330. WAVES 1 TO  
3 FEET TODAY. WAVES 1 TO 3 FEET BUILDING TO 2 TO 4 FEET TONIGHT.  
 
SUPERIOR EAST 12530 11520 11410 11310 11320 12330. WAVES 3 TO 6  
FEET SUBSIDING TO 1 TO 2 FEET TODAY. WAVES 1 TO 3 FEET BUILDING  
TO 2 TO 4 FEET TONIGHT.  
 

 
 
TAP  
 
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 Facts and Trivia - THE DISASTERS
Canada’s strongest-known earthquake was an estimated Magnitude 9.0 monster that destroyed at least one village in what is now British Columbia, and caused numerous other deaths when it struck in the Cascadia Subduction Zone, just off the B.C. coast, in January 1700.

Aside from First Nations accounts, it also appears in records in Japan, where people marked a small "orphan tsunami" that had reached the island from all the way across the Pacific.