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Marine Weather Forecast from Environment Canada

Winds


Issued 03:00 AM EDT 28 October 2026

Today Tonight and Thursday. Strong wind warning in effect. Wind south 20 knots diminishing to southwest 15 this morning and to variable 10 this afternoon. Wind increasing to south 20 this evening then veering to west 20 overnight. Wind veering to northwest 25 near noon Thursday.

Extended Forecast


Issued 03:00 AM EDT 28 October 2026
Friday Wind northwest 20 knots diminishing to light late in the day.
Saturday Wind light.
Sunday Wind light.

Waves


Issued 03:00 AM EDT 28 October 2026

Today Tonight and Thursday. Waves 1.5 metres subsiding to 1 near noon and to 0.5 early this evening. Waves building to 1.5 near midnight and to 2 Thursday afternoon.

Weather & Visibility


Issued 03:00 AM EDT 28 October 2026

Today Tonight and Thursday.Scattered showers ending near noon. Showers tonight and Thursday morning with a risk of thunderstorms.

 

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



  
238   
FZUS63 KMQT 280800  
GLFLS   
  
OPEN LAKE FORECAST FOR LAKE SUPERIOR  
NATIONAL WEATHER SERVICE MARQUETTE MI  
400 AM EDT WED OCT 28 2026  
  
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 29.7 INCH LOW OVER THE CANADIAN PRAIRIE THIS MORNING TRACKS TO   
NORTHERN ONTARIO TONIGHT AS A DEVELOPING 29.8 INCH COLORADO LOW   
EJECTS OUT OF THE CENTRAL PLAINS AND MERGES WITH THIS FEATURE OVER   
LAKE SUPERIOR. HIGH PRESSURE OF 30.2 TO 30.3 INCHES RETURNS TO THE   
UPPER GREAT LAKES LATE THURSDAY INTO FRIDAY, STRENGTHENING TO 30.4   
INCHES OVER THE LOWER GREAT LAKES ON SATURDAY AS RIDGING OF 30.1 TO   
30.2 INCHES LINGERS OVER LAKE SUPERIOR THROUGH THE WEEKEND.  
  
LSZ162-282000-  
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND  
PORTAGE MN BEYOND 5NM-  
400 AM EDT WED OCT 28 2026 /300 AM CDT WED OCT 28 2026/  
   
EARLY THIS MORNING  
SOUTHWEST WINDS 5 TO 15 KNOTS. WAVES CALM  
TO 2 FEET.    
TODAY  
SOUTHWEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO  
15 KNOTS IN THE AFTERNOON, THEN BACKING EAST LATE. SHOWERS LIKELY  
AND A SLIGHT CHANCE OF THUNDERSTORMS BY MID AFTERNOON. WAVES CALM  
TO 2 FEET.    
TONIGHT  
EAST WINDS 10 TO 20 KNOTS VEERING WEST AFTER MIDNIGHT,  
THEN INCREASING TO 15 TO 25 KNOTS LATE. SHOWERS AND A SLIGHT  
CHANCE OF THUNDERSTORMS THROUGH MIDNIGHT. WAVES BUILDING TO 2 TO  
4 FEET.    
THURSDAY  
WEST WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO  
25 KNOTS LATE. WAVES BUILDING TO 3 TO 5 FEET OCCASIONALLY TO  
7 FEET, THEN SUBSIDING TO 2 TO 4 FEET.    
THURSDAY NIGHT  
WEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO  
15 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.    
FRIDAY  
WEST WINDS 5 TO 15 KNOTS BACKING SOUTHWEST BY MID  
AFTERNOON. WAVES CALM TO 2 FEET.    
FRIDAY NIGHT  
NORTHWEST WINDS 5 TO 15 KNOTS VEERING NORTHEAST  
AFTER MIDNIGHT. WAVES CALM TO 2 FEET.    
SATURDAY  
EAST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.    
SUNDAY  
EAST WINDS LESS THAN 10 KNOTS. WAVES CALM TO 2 FEET.   
  
  
  
LSZ263-282000-  
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-  
400 AM EDT WED OCT 28 2026  
   
EARLY THIS MORNING  
SOUTHWEST WINDS 5 TO 15 KNOTS. A SLIGHT  
CHANCE OF SHOWERS. WAVES 1 TO 3 FEET.    
TODAY  
SOUTHWEST WINDS 5 TO 15 KNOTS BACKING EAST LATE. A  
CHANCE OF SHOWERS AND A SLIGHT CHANCE OF THUNDERSTORMS BY MID  
AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.    
TONIGHT  
SOUTHEAST WINDS 10 TO 20 KNOTS BECOMING WEST 15 TO  
25 KNOTS AFTER MIDNIGHT. SHOWERS AND A SLIGHT CHANCE OF  
THUNDERSTORMS THROUGH MIDNIGHT. WAVES BUILDING TO 3 TO 6 FEET  
OCCASIONALLY TO 8 FEET.    
THURSDAY  
WEST WINDS 20 TO 30 KNOTS. WAVES BUILDING TO 6 TO  
9 FEET OCCASIONALLY TO 11 FEET, THEN SUBSIDING TO 4 TO 7 FEET  
OCCASIONALLY TO 9 FEET.    
THURSDAY NIGHT  
WEST WINDS 15 TO 25 KNOTS BECOMING NORTHWEST  
10 TO 20 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO 1 TO 3 FEET.    
FRIDAY  
WEST WINDS 5 TO 15 KNOTS. WAVES SUBSIDING TO CALM TO  
2 FEET.    
FRIDAY NIGHT  
WEST WINDS 5 TO 15 KNOTS BECOMING NORTHWEST LESS  
THAN 10 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.    
SATURDAY  
SOUTH WINDS LESS THAN 10 KNOTS. WAVES CALM TO 2 FEET.   
SUNDAY  
SOUTHWEST WINDS LESS THAN 10 KNOTS BACKING SOUTH. WAVES  
CALM TO 2 FEET.   
  
  
  
LSZ264-282000-  
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU  
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-  
400 AM EDT WED OCT 28 2026  
   
EARLY THIS MORNING  
SOUTH WINDS 5 TO 15 KNOTS. WAVES 3 TO  
5 FEET OCCASIONALLY TO 7 FEET SUBSIDING TO 2 TO 4 FEET.    
TODAY  
SOUTHWEST WINDS 5 TO 15 KNOTS BACKING SOUTH LATE. A  
SLIGHT CHANCE OF SHOWERS BY MID AFTERNOON. WAVES SUBSIDING TO  
CALM TO 2 FEET.    
TONIGHT  
SOUTHEAST WINDS 10 TO 20 KNOTS BECOMING WEST 15 TO  
25 KNOTS AFTER MIDNIGHT. SHOWERS AND A SLIGHT CHANCE OF  
THUNDERSTORMS THROUGH MIDNIGHT. WAVES BUILDING TO 3 TO 6 FEET  
OCCASIONALLY TO 8 FEET.    
THURSDAY  
WEST WINDS 20 TO 30 KNOTS INCREASING TO 30 KNOTS WITH  
A FEW GALE FORCE GUSTS TO 35 KNOTS POSSIBLE IN THE AFTERNOON,  
THEN DIMINISHING TO 20 TO 30 KNOTS LATE. WAVES BUILDING TO 5 TO  
9 FEET OCCASIONALLY TO 11 FEET.    
THURSDAY NIGHT  
NORTHWEST WINDS 15 TO 25 KNOTS DIMINISHING TO  
10 TO 20 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO 2 TO 4 FEET.    
FRIDAY  
NORTHWEST WINDS 5 TO 15 KNOTS BACKING WEST BY MID  
AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.    
FRIDAY NIGHT  
WEST WINDS 5 TO 15 KNOTS DIMINISHING TO LESS THAN  
10 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.    
SATURDAY  
SOUTHWEST WINDS LESS THAN 10 KNOTS BACKING SOUTH.  
WAVES CALM TO 2 FEET.    
SUNDAY  
SOUTHWEST WINDS 5 TO 15 KNOTS BECOMING SOUTH LESS THAN  
10 KNOTS. WAVES CALM TO 2 FEET.   
  
  
  
LSZ265-282000-  
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI  
BEYOND 5NM FROM SHORE-  
400 AM EDT WED OCT 28 2026  
   
EARLY THIS MORNING  
SOUTH WINDS 10 TO 20 KNOTS. WAVES 2 TO  
4 FEET SUBSIDING TO 1 TO 3 FEET.    
TODAY  
SOUTH WINDS 10 TO 20 KNOTS BECOMING SOUTHWEST 5 TO  
15 KNOTS IN THE AFTERNOON, THEN BACKING SOUTHEAST LATE. A SLIGHT  
CHANCE OF SHOWERS BY MID AFTERNOON. WAVES SUBSIDING TO CALM TO  
2 FEET.    
TONIGHT  
SOUTHEAST WINDS 20 TO 30 KNOTS VEERING SOUTH AFTER  
MIDNIGHT, THEN VEERING WEST LATE. SHOWERS AND A SLIGHT CHANCE OF  
THUNDERSTORMS THROUGH MIDNIGHT, THEN A CHANCE OF SHOWERS AFTER  
MIDNIGHT. WAVES BUILDING TO 3 TO 6 FEET OCCASIONALLY TO 8 FEET.    
THURSDAY  
WEST WINDS TO 30 KNOTS WITH A FEW GALE FORCE GUSTS TO  
40 KNOTS POSSIBLE. WAVES BUILDING TO 5 TO 9 FEET OCCASIONALLY TO  
11 FEET.    
THURSDAY NIGHT  
NORTHWEST WINDS 20 TO 30 KNOTS. WAVES SUBSIDING  
TO 2 TO 4 FEET.    
FRIDAY  
NORTHWEST WINDS 15 TO 25 KNOTS BECOMING WEST 10 TO  
20 KNOTS BY MID AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.    
FRIDAY NIGHT  
WEST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.    
SATURDAY  
SOUTHWEST WINDS 5 TO 15 KNOTS BACKING SOUTH. WAVES  
CALM TO 2 FEET.    
SUNDAY  
SOUTH WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.   
  
  
  
LSZ266-282000-  
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-  
400 AM EDT WED OCT 28 2026  
   
EARLY THIS MORNING  
SOUTH WINDS 15 TO 25 KNOTS. A SLIGHT CHANCE  
OF SHOWERS. WAVES 3 TO 5 FEET OCCASIONALLY TO 7 FEET.    
TODAY  
SOUTH WINDS 15 TO 25 KNOTS BECOMING SOUTHWEST 5 TO  
15 KNOTS IN THE AFTERNOON, THEN BACKING SOUTHEAST LATE. WAVES  
SUBSIDING TO CALM TO 2 FEET.    
TONIGHT  
SOUTHEAST WINDS 20 TO 30 KNOTS VEERING SOUTH AFTER  
MIDNIGHT, THEN VEERING WEST LATE. SHOWERS THROUGH MIDNIGHT. A  
SLIGHT CHANCE OF THUNDERSTORMS. A CHANCE OF SHOWERS AFTER  
MIDNIGHT. WAVES BUILDING TO 4 TO 7 FEET OCCASIONALLY TO 9 FEET,  
THEN SUBSIDING TO 3 TO 6 FEET OCCASIONALLY TO 8 FEET.    
THURSDAY  
WEST WINDS TO 30 KNOTS WITH A FEW GALE FORCE GUSTS TO  
40 KNOTS POSSIBLE. WAVES BUILDING TO 7 TO 11 FEET OCCASIONALLY TO  
14 FEET.    
THURSDAY NIGHT  
NORTHWEST WINDS 20 TO 30 KNOTS DIMINISHING TO  
15 TO 25 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO 3 TO 6 FEET  
OCCASIONALLY TO 8 FEET.    
FRIDAY  
NORTHWEST WINDS 15 TO 25 KNOTS BECOMING WEST 10 TO  
20 KNOTS BY MID AFTERNOON. WAVES SUBSIDING TO 1 TO 3 FEET.    
FRIDAY NIGHT  
NORTHWEST WINDS 5 TO 15 KNOTS BACKING WEST AFTER  
MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.    
SATURDAY  
SOUTHWEST WINDS 5 TO 15 KNOTS BACKING SOUTH. WAVES  
CALM TO 2 FEET.    
SUNDAY  
SOUTH WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.   
  
  
  
LSZ267-282000-  
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF  
SHORE TO THE US/CANADIAN BORDER-  
400 AM EDT WED OCT 28 2026  
   
EARLY THIS MORNING  
SOUTH WINDS 20 TO 30 KNOTS. WAVES 3 TO  
5 FEET OCCASIONALLY TO 7 FEET SUBSIDING TO 2 TO 4 FEET.    
TODAY  
SOUTH WINDS 15 TO 25 KNOTS BECOMING SOUTHWEST 10 TO  
20 KNOTS IN THE AFTERNOON, THEN BECOMING SOUTHEAST 5 TO 15 KNOTS  
LATE. A SLIGHT CHANCE OF SHOWERS BY MID AFTERNOON. WAVES  
SUBSIDING TO CALM TO 2 FEET.    
TONIGHT  
SOUTHEAST WINDS 15 TO 25 KNOTS BECOMING SOUTH 20 TO  
30 KNOTS AFTER MIDNIGHT, THEN BECOMING SOUTHWEST TO 30 KNOTS WITH  
A FEW GALE FORCE GUSTS TO 35 KNOTS POSSIBLE LATE. A CHANCE OF  
SHOWERS AND A SLIGHT CHANCE OF THUNDERSTORMS. WAVES BUILDING TO  
4 TO 7 FEET OCCASIONALLY TO 9 FEET, THEN SUBSIDING TO 3 TO 6 FEET  
OCCASIONALLY TO 8 FEET.    
THURSDAY  
WEST WINDS 20 TO 30 KNOTS INCREASING TO 30 KNOTS WITH  
A FEW GALE FORCE GUSTS TO 40 KNOTS POSSIBLE IN THE AFTERNOON.  
WAVES BUILDING TO 8 TO 12 FEET OCCASIONALLY TO 15 FEET.    
THURSDAY NIGHT  
NORTHWEST GALES TO 35 KNOTS DIMINISHING TO  
20 TO 30 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO 4 TO 7 FEET  
OCCASIONALLY TO 9 FEET.    
FRIDAY  
NORTHWEST WINDS 15 TO 25 KNOTS BACKING WEST BY MID  
AFTERNOON. WAVES SUBSIDING TO 3 TO 5 FEET OCCASIONALLY TO 7 FEET.   
FRIDAY NIGHT  
NORTHWEST WINDS 5 TO 15 KNOTS BACKING WEST AFTER  
MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.    
SATURDAY  
SOUTHWEST WINDS 5 TO 15 KNOTS BACKING SOUTH. WAVES  
CALM TO 2 FEET.    
SUNDAY  
SOUTH WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.   
  
  
  
LSZ261-281400-  
MAFOR 2809/  
SUPERIOR WEST 13510 11400 11216 11326 12620. WAVES 2 FEET OR LESS  
TODAY. WAVES 1 TO 3 FEET TONIGHT.   
  
SUPERIOR NORTH CENTRAL 11420 12520 11510 11400 11326 11436 11640.  
WAVES 3 TO 5 FEET SUBSIDING TO 2 TO 4 FEET TODAY. WAVES 1 TO 3  
FEET BUILDING TO 3 TO 5 FEET TONIGHT.   
  
SUPERIOR SOUTH CENTRAL 12420 11520 11400 11310 11346 11446 11540.  
WAVES 2 TO 4 FEET SUBSIDING TO 1 FOOT OR LESS TODAY. WAVES 1 TO 2  
FEET BUILDING TO 3 TO 5 FEET TONIGHT.   
  
SUPERIOR EAST 11430 11420 11520 11510 11300 11330 11446 11540.  
WAVES 3 TO 5 FEET SUBSIDING TO 1 TO 3 FEET TODAY. WAVES 1 TO 2  
FEET BUILDING TO 4 TO 7 FEET TONIGHT.   
  
  
  
WFO MQT  
  
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
Most provinces have grappled with major flood crises over the centuries, such that it’s difficult to pinpoint where the worst has been.

The Prairies are often cited as the most flood-prone part of the country. A 1950 flood in Manitoba forced the evacuation of 100,000 people, including a sixth of Winnipeg’s residents. Flood control infrastructure has since been built, but a 1997 flood still forced 30,000 Manitobans from their homes.

In 2013, the Calgary Flood forced 100,000 people to evacuate, killed at least four people and totaled approximately $6 billion in damages.

In terms of deaths, more than 80 people died when Hurricane Hazel slammed southern Ontario in 1954, and the 1996 Saguenay Floods in Quebec claimed at least 10 lives, according to the Canadian Encyclopedia.