Marine Weather Forecast from Environment Canada
WindsIssued 10:30 AM EST 09 February 2025 |
Today Tonight and Monday. Wind northwest 15 knots backing to west 20 this evening then veering to northwest 15 late overnight. Wind backing to west 20 Monday afternoon then increasing to west 25 Monday evening. |
Extended Forecast
Issued 03:00 AM EST 09 February 2025
Tuesday
Wind northwest 25 knots diminishing to
northwest 15 in the morning.
Wednesday
Wind west 15 knots.
Thursday
Wind northwest 15 knots increasing to
northwest 25 late in the day.
|
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WavesIssued 10:30 AM EST 09 February 2025 |
Today Tonight and Monday. Waves 1 to 1.5 metres building to 2 Monday evening. |
Weather & VisibilityIssued 10:30 AM EST 09 February 2025 |
Today Tonight and Monday.Flurries. Visibility 1 mile or less in flurries. |
Freezing SprayIssued 10:30 AM EST 09 February 2025 |
Today Tonight and Monday. Risk of freezing spray Monday late in the day. |
Ice Forecast*Issued 12:00 PM EST 9 February 2025 |
Today Tonight and Monday Open water except 9 tenths thin lake ice along the southern and parts of the eastern shores. Consolidated medium lake ice in a few bays. *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
 
041  
FZUS63 KMQT 092036  
GLFLS  
 
OPEN LAKE FORECAST FOR LAKE SUPERIOR  
NATIONAL WEATHER SERVICE MARQUETTE MI  
336 PM EST SUN FEB 9 2025  
 
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  
30.5 INCH HIGH PRESSURE CENTERED OVER IA THROUGH THIS  
EVENING IS EXTENDING RIDGING OF 30.3 INCHES OVER LAKE SUPERIOR.  
AFTER A WEAK SURFACE TROUGH DROPS THROUGH TONIGHT, THE RIDGE  
RECOVERS MONDAY AS A 30.9 INCH HIGH BUILDS INTO THE NORTHERN  
PLAINS. THIS HIGH WILL MAINTAIN RIDGING OVER LAKE SUPERIOR AROUND  
30.5 INCHES THROUGH TUESDAY NIGHT. A WEAK 30.1 INCH TROUGH THEN  
PASSES OVER THE LAKE WEDNESDAY, DEEPENING TO 29.9 INCHES THURSDAY.  
HIGH PRESSURE OVER THE PLAINS MOVES INTO THE MIDWEST FOR FRIDAY,  
BUILDING TO 30.5 INCHES BY THE AFTERNOON.  
 
 
 
LSZ162-100445-  
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND  
PORTAGE MN BEYOND 5NM-  
336 PM EST SUN FEB 9 2025 /236 PM CST SUN FEB 9 2025/  
   
LATE THIS AFTERNOON  
WEST WINDS 15 TO 25 KNOTS. ISOLATED SNOW  
SHOWERS. WAVES 2 TO 4 FEET.    
TONIGHT  
WEST WINDS 15 TO 25 KNOTS BECOMING NORTHWEST 10 TO  
20 KNOTS LATE. ISOLATED SNOW SHOWERS. WAVES 2 TO 4 FEET.    
MONDAY  
WEST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO 25 KNOTS.  
WAVES SUBSIDING TO 1 TO 3 FEET, THEN BUILDING TO 3 TO 5 FEET  
OCCASIONALLY TO 7 FEET.    
MONDAY NIGHT  
NORTHWEST WINDS 15 TO 25 KNOTS DIMINISHING TO  
10 TO 20 KNOTS LATE. ISOLATED SNOW SHOWERS. WAVES SUBSIDING TO  
1 TO 3 FEET.    
TUESDAY  
NORTHWEST WINDS 10 TO 20 KNOTS BACKING WEST IN THE  
AFTERNOON. ISOLATED SNOW SHOWERS. WAVES SUBSIDING TO CALM TO  
2 FEET.    
TUESDAY NIGHT  
WEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO  
15 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.    
WEDNESDAY  
SOUTHWEST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO  
20 KNOTS IN THE AFTERNOON. WAVES CALM TO 2 FEET.    
WEDNESDAY NIGHT  
WEST WINDS 10 TO 20 KNOTS VEERING NORTHWEST  
AFTER MIDNIGHT. WAVES CALM TO 2 FEET.    
THURSDAY  
NORTHWEST WINDS 10 TO 20 KNOTS BACKING WEST. WAVES  
CALM TO 2 FEET.    
FRIDAY  
WEST WINDS 10 TO 20 KNOTS BECOMING NORTHEAST 15 TO  
25 KNOTS. WAVES BUILDING TO 1 TO 3 FEET.  
 
NOTE, WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.  
 
 
 
LSZ263-100445-  
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-  
336 PM EST SUN FEB 9 2025  
   
LATE THIS AFTERNOON  
WEST WINDS 15 TO 25 KNOTS. ISOLATED SNOW  
SHOWERS. WAVES 3 TO 6 FEET OCCASIONALLY TO 8 FEET.    
TONIGHT  
WEST WINDS 15 TO 25 KNOTS VEERING NORTHWEST BY  
MIDNIGHT. SCATTERED SNOW SHOWERS. WAVES SUBSIDING TO 3 TO 5 FEET  
OCCASIONALLY TO 7 FEET.    
MONDAY  
NORTHWEST WINDS 15 TO 25 KNOTS BACKING WEST BY LATE  
MORNING, THEN INCREASING TO 20 TO 30 KNOTS BY MID AFTERNOON.  
ISOLATED SNOW SHOWERS. FREEZING SPRAY IN THE AFTERNOON. WAVES  
BUILDING TO 4 TO 7 FEET OCCASIONALLY TO 9 FEET.    
MONDAY NIGHT  
NORTHWEST WINDS 20 TO 30 KNOTS DIMINISHING TO  
10 TO 20 KNOTS LATE. HEAVY FREEZING SPRAY IN THE EVENING.  
SCATTERED SNOW SHOWERS. WAVES BUILDING TO 5 TO 8 FEET  
OCCASIONALLY TO 10 FEET, THEN SUBSIDING TO 2 TO 4 FEET.    
TUESDAY  
NORTHWEST WINDS 10 TO 20 KNOTS BACKING WEST IN THE  
AFTERNOON. SCATTERED SNOW SHOWERS. WAVES SUBSIDING TO 1 TO  
3 FEET.    
TUESDAY NIGHT  
WEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO  
15 KNOTS AFTER MIDNIGHT. SCATTERED SNOW SHOWERS. WAVES SUBSIDING  
TO CALM TO 2 FEET.    
WEDNESDAY  
SOUTHWEST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.   
WEDNESDAY NIGHT  
WEST WINDS 5 TO 15 KNOTS BECOMING NORTHWEST  
10 TO 20 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.    
THURSDAY  
NORTHWEST WINDS 10 TO 20 KNOTS BACKING WEST. WAVES  
BUILDING TO 1 TO 3 FEET.    
FRIDAY  
WEST WINDS 5 TO 15 KNOTS BECOMING NORTH 15 TO 25 KNOTS.  
WAVES SUBSIDING TO CALM TO 2 FEET, THEN BUILDING TO 1 TO 3 FEET.  
 
NOTE, WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.  
 
 
 
LSZ264-100445-  
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU  
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-  
336 PM EST SUN FEB 9 2025  
   
LATE THIS AFTERNOON  
WEST WINDS 15 TO 25 KNOTS. ISOLATED SNOW  
SHOWERS. WAVES 3 TO 6 FEET OCCASIONALLY TO 8 FEET.    
TONIGHT  
WEST WINDS 15 TO 25 KNOTS BECOMING NORTHWEST 10 TO  
20 KNOTS BY MIDNIGHT. SCATTERED SNOW SHOWERS. WAVES SUBSIDING TO  
3 TO 5 FEET OCCASIONALLY TO 7 FEET.    
MONDAY  
NORTHWEST WINDS 15 TO 25 KNOTS BECOMING WEST 20 TO  
30 KNOTS BY MID AFTERNOON. ISOLATED SNOW SHOWERS. FREEZING SPRAY  
IN THE AFTERNOON. WAVES BUILDING TO 4 TO 7 FEET OCCASIONALLY TO  
9 FEET.    
MONDAY NIGHT  
NORTHWEST WINDS 20 TO 30 KNOTS DIMINISHING TO  
15 TO 25 KNOTS LATE. HEAVY FREEZING SPRAY. ISOLATED SNOW SHOWERS.  
WAVES BUILDING TO 5 TO 8 FEET OCCASIONALLY TO 10 FEET, THEN  
SUBSIDING TO 3 TO 5 FEET OCCASIONALLY TO 7 FEET.    
TUESDAY  
NORTHWEST WINDS 10 TO 20 KNOTS BECOMING WEST 5 TO  
15 KNOTS IN THE AFTERNOON. SCATTERED SNOW SHOWERS. WAVES  
SUBSIDING TO 1 TO 3 FEET.    
TUESDAY NIGHT  
WEST WINDS 5 TO 15 KNOTS VEERING NORTHWEST AFTER  
MIDNIGHT. SCATTERED SNOW SHOWERS. WAVES SUBSIDING TO CALM TO  
2 FEET.    
WEDNESDAY  
WEST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.    
WEDNESDAY NIGHT  
WEST WINDS 5 TO 15 KNOTS BECOMING NORTH 15 TO  
25 KNOTS AFTER MIDNIGHT. WAVES BUILDING TO 1 TO 3 FEET.    
THURSDAY  
NORTHWEST WINDS 10 TO 20 KNOTS. WAVES BUILDING TO  
2 TO 4 FEET, THEN SUBSIDING TO 1 TO 3 FEET.    
FRIDAY  
WEST WINDS 5 TO 15 KNOTS BECOMING NORTH 15 TO 25 KNOTS.  
WAVES SUBSIDING TO CALM TO 2 FEET, THEN BUILDING TO 2 TO 4 FEET.  
 
NOTE, WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.  
 
 
 
LSZ265-100445-  
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI  
BEYOND 5NM FROM SHORE-  
336 PM EST SUN FEB 9 2025  
   
LATE THIS AFTERNOON  
WEST WINDS 20 TO 30 KNOTS. SCATTERED SNOW  
SHOWERS. WAVES 2 TO 4 FEET BUILDING TO 3 TO 5 FEET OCCASIONALLY  
TO 7 FEET.    
TONIGHT  
WEST WINDS 15 TO 25 KNOTS. SCATTERED SNOW SHOWERS IN  
THE EVENING, THEN NUMEROUS SNOW SHOWERS AFTER MIDNIGHT. WAVES  
SUBSIDING TO 2 TO 4 FEET.    
MONDAY  
WEST WINDS 15 TO 25 KNOTS INCREASING TO 20 TO 30 KNOTS.  
SCATTERED SNOW SHOWERS. WAVES BUILDING TO 3 TO 6 FEET  
OCCASIONALLY TO 8 FEET.    
MONDAY NIGHT  
WEST WINDS 20 TO 30 KNOTS VEERING NORTHWEST BY  
MIDNIGHT, THEN DIMINISHING TO 15 TO 25 KNOTS LATE. HEAVY FREEZING  
SPRAY IN THE EVENING. SCATTERED SNOW SHOWERS. WAVES SUBSIDING TO  
2 TO 4 FEET.    
TUESDAY  
NORTHWEST WINDS 15 TO 25 KNOTS BECOMING WEST 10 TO  
20 KNOTS IN THE AFTERNOON. SCATTERED SNOW SHOWERS. WAVES  
SUBSIDING TO CALM TO 2 FEET.    
TUESDAY NIGHT  
WEST WINDS 10 TO 20 KNOTS. WAVES CALM TO 2 FEET.   
WEDNESDAY  
SOUTHWEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO  
15 KNOTS IN THE AFTERNOON. WAVES CALM TO 2 FEET.    
WEDNESDAY NIGHT  
WEST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO  
20 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.    
THURSDAY  
NORTHWEST WINDS 15 TO 25 KNOTS BECOMING WEST 10 TO  
20 KNOTS. WAVES BUILDING TO 2 TO 4 FEET, THEN SUBSIDING TO CALM  
TO 2 FEET.    
FRIDAY  
WEST WINDS 10 TO 20 KNOTS VEERING NORTH. A CHANCE OF  
SNOW SHOWERS. WAVES BUILDING TO 1 TO 3 FEET.  
 
NOTE, WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.  
 
 
 
LSZ266-100445-  
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-  
336 PM EST SUN FEB 9 2025  
   
LATE THIS AFTERNOON  
WEST WINDS 15 TO 25 KNOTS. FREEZING SPRAY.  
SCATTERED SNOW SHOWERS. WAVES 3 TO 6 FEET OCCASIONALLY TO 8 FEET.   
TONIGHT  
WEST WINDS 15 TO 25 KNOTS VEERING NORTHWEST LATE.  
FREEZING SPRAY. SCATTERED SNOW SHOWERS. WAVES BUILDING TO 4 TO  
7 FEET OCCASIONALLY TO 9 FEET, THEN SUBSIDING TO 3 TO 6 FEET  
OCCASIONALLY TO 8 FEET.    
MONDAY  
WEST WINDS 15 TO 25 KNOTS INCREASING TO 20 TO 30 KNOTS.  
FREEZING SPRAY. SCATTERED SNOW SHOWERS. WAVES BUILDING TO 5 TO  
8 FEET OCCASIONALLY TO 10 FEET.    
MONDAY NIGHT  
WEST WINDS 20 TO 30 KNOTS VEERING NORTHWEST BY  
MIDNIGHT, THEN DIMINISHING TO 15 TO 25 KNOTS LATE. HEAVY FREEZING  
SPRAY. SCATTERED SNOW SHOWERS. WAVES BUILDING TO 7 TO 10 FEET  
OCCASIONALLY TO 13 FEET, THEN SUBSIDING TO 4 TO 7 FEET  
OCCASIONALLY TO 9 FEET.    
TUESDAY  
NORTHWEST WINDS 15 TO 25 KNOTS BECOMING WEST 10 TO  
20 KNOTS IN THE AFTERNOON. HEAVY FREEZING SPRAY IN THE MORNING.  
SCATTERED SNOW SHOWERS. WAVES SUBSIDING TO 2 TO 4 FEET.    
TUESDAY NIGHT  
WEST WINDS 10 TO 20 KNOTS. SCATTERED SNOW  
SHOWERS. WAVES SUBSIDING TO 1 TO 3 FEET.    
WEDNESDAY  
SOUTHWEST WINDS 5 TO 15 KNOTS. A CHANCE OF SNOW  
SHOWERS. WAVES SUBSIDING TO CALM TO 2 FEET.    
WEDNESDAY NIGHT  
SOUTHWEST WINDS 5 TO 15 KNOTS BECOMING  
NORTHWEST 15 TO 25 KNOTS AFTER MIDNIGHT. WAVES BUILDING TO 1 TO  
3 FEET.    
THURSDAY  
NORTHWEST WINDS 15 TO 25 KNOTS BACKING WEST. WAVES  
BUILDING TO 3 TO 6 FEET OCCASIONALLY TO 8 FEET, THEN SUBSIDING TO  
2 TO 4 FEET.    
FRIDAY  
WEST WINDS 10 TO 20 KNOTS. A CHANCE OF SNOW SHOWERS.  
WAVES SUBSIDING TO CALM TO 2 FEET, THEN BUILDING TO 2 TO 4 FEET.  
 
NOTE, WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.  
 
 
 
LSZ267-100445-  
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF  
SHORE TO THE US/CANADIAN BORDER-  
336 PM EST SUN FEB 9 2025  
   
LATE THIS AFTERNOON  
WEST WINDS 20 TO 30 KNOTS. FREEZING SPRAY.  
NUMEROUS SNOW SHOWERS. WAVES 4 TO 7 FEET OCCASIONALLY TO 9 FEET  
SUBSIDING TO 3 TO 6 FEET OCCASIONALLY TO 8 FEET.    
TONIGHT  
WEST WINDS 20 TO 30 KNOTS BECOMING NORTHWEST 15 TO  
25 KNOTS LATE. FREEZING SPRAY. NUMEROUS SNOW SHOWERS. WAVES  
BUILDING TO 5 TO 8 FEET OCCASIONALLY TO 10 FEET, THEN SUBSIDING  
TO 3 TO 6 FEET OCCASIONALLY TO 8 FEET.    
MONDAY  
NORTHWEST WINDS 15 TO 25 KNOTS BECOMING WEST 20 TO  
30 KNOTS BY LATE MORNING, THEN INCREASING TO 30 KNOTS WITH A FEW  
GALE FORCE GUSTS TO 35 KNOTS POSSIBLE BY MID AFTERNOON. FREEZING  
SPRAY. NUMEROUS SNOW SHOWERS IN THE MORNING. SCATTERED SNOW  
SHOWERS IN THE AFTERNOON. WAVES BUILDING TO 6 TO 9 FEET  
OCCASIONALLY TO 11 FEET.    
MONDAY NIGHT  
WEST WINDS TO 30 KNOTS WITH A FEW GALE FORCE  
GUSTS TO 35 KNOTS POSSIBLE BECOMING NORTHWEST 20 TO 30 KNOTS BY  
MIDNIGHT, THEN DIMINISHING TO 15 TO 25 KNOTS LATE. FREEZING  
SPRAY. NUMEROUS SNOW SHOWERS. WAVES BUILDING TO 7 TO 10 FEET  
OCCASIONALLY TO 13 FEET, THEN SUBSIDING TO 5 TO 8 FEET  
OCCASIONALLY TO 10 FEET.    
TUESDAY  
NORTH WINDS 10 TO 20 KNOTS BACKING NORTHWEST IN THE  
AFTERNOON. NUMEROUS SNOW SHOWERS. WAVES SUBSIDING TO 2 TO 4 FEET.   
TUESDAY NIGHT  
WEST WINDS 10 TO 20 KNOTS. SCATTERED SNOW  
SHOWERS. WAVES SUBSIDING TO 1 TO 3 FEET.    
WEDNESDAY  
SOUTHWEST WINDS 10 TO 20 KNOTS BACKING SOUTH IN THE  
AFTERNOON. WAVES SUBSIDING TO CALM TO 2 FEET.    
WEDNESDAY NIGHT  
SOUTH WINDS 10 TO 20 KNOTS. A CHANCE OF SNOW  
SHOWERS. WAVES CALM TO 2 FEET.    
THURSDAY  
NORTHWEST WINDS 15 TO 25 KNOTS BECOMING WEST 20 TO  
30 KNOTS. A CHANCE OF SNOW SHOWERS. FREEZING SPRAY. WAVES  
BUILDING TO 3 TO 6 FEET OCCASIONALLY TO 8 FEET.    
FRIDAY  
WEST WINDS 15 TO 25 KNOTS BECOMING SOUTHWEST 10 TO  
20 KNOTS. A CHANCE OF SNOW SHOWERS. WAVES SUBSIDING TO CALM TO  
2 FEET, THEN BUILDING TO 1 TO 3 FEET.  
 
NOTE, WAVE HEIGHT FORECASTS ARE FOR ICE FREE AREAS.  
 
 
 
LSZ261-100445-  
MAFOR 0922/  
SUPERIOR WEST 11630 12630 19637 13730 12630. WAVES 3 TO 5 FEET  
TONIGHT. WAVES 2 TO 4 FEET BUILDING TO 3 TO 5 FEET MONDAY.  
 
SUPERIOR NORTH CENTRAL 11630 11730 13730 19737 12730 11640. WAVES  
2 TO 4 FEET BUILDING TO 3 TO 5 FEET TONIGHT. WAVES 3 TO 6 FEET  
MONDAY.  
 
SUPERIOR SOUTH CENTRAL 15630 19637 11630 19637 11640 19647. WAVES  
3 TO 6 FEET.  
 
SUPERIOR EAST 12637 14737 12640 19647. WAVES 5 TO 8 FEET TONIGHT.  
WAVES 5 TO 8 FEET BUILDING TO 6 TO 9 FEET MONDAY.  
 
 
 
LC  
 
EXPERIMENTAL MODERNIZED OPEN LAKE FORECAST IS AVAILABLE ONLINE AT  
WEATHER.GOV/MQT/GLFTABLE  
 
GRAPHICAL MARINE FORECASTS ARE AVAILABLE ONLINE AT:  
WEATHER.GOV/GREATLAKES