Marine Weather Forecast from Environment Canada

Winds


Issued 10:30 AM EST
29 November 2021

Today Tonight and Tuesday. Strong wind warning in effect. Wind light becoming south 10 knots this evening then increasing to west 15 early Tuesday morning. Wind increasing to northwest 30 late Tuesday morning.

Extended Forecast


Issued 03:00 AM EST
29 November 2021
Wednesday Wind northwest 15 knots diminishing to light in the morning then increasing to southwest 20 late in the day.
Thursday Wind west 30 knots diminishing to north 15 late in the day.
Friday Wind north 15 knots diminishing to light.

Waves


Issued 10:30 AM EST
29 November 2021

Today Tonight and Tuesday. Waves 0.5 metres or less building to 0.5 to 1 near midnight and to 2 Tuesday morning. Waves building to 3 near noon Tuesday then subsiding to 2 Tuesday evening.

Weather & Visibility


Issued 10:30 AM EST
29 November 2021

Today Tonight and Tuesday.Periods of snow changing to showers or flurries near midnight and ending near noon Tuesday. Visibility as low as 1 mile in precipitation.

Ice Forecast*


Issued 12:00 PM EST
29 November 2021

Today Tonight and Tuesday Ice free.

*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



  
064  
FZUS63 KMQT 291449  
GLFLS  
 
OPEN LAKE FORECAST FOR LAKE SUPERIOR  
NATIONAL WEATHER SERVICE MARQUETTE MI  
949 AM EST MON NOV 29 2021  
 
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 30.0 INCH RIDGE AXIS OVER THE UPPER GREAT LAKES  
THIS MORNING WILL MOVE TO THE LOWER GREAT LAKES BY THIS EVENING. A  
TROUGH OF 29.8 INCHES OVER THE NORTHERN PLAINS THIS MORNING WILL  
MOVE INTO THE UPPER GREAT LAKES TONIGHT. THE NEXT RIDGE OF AROUND  
30.0 INCHES MOVES OVER LAKE SUPERIOR BY TUESDAY EVENING, AND IS  
EXPECTED TO MOVE OUT BY EARLY WEDNESDAY. A 29.4 INCH LOW OVER LAKE  
WINNIPEG WEDNESDAY MORNING WILL DEEPEN TO 29.3 INCHES OVER LAKE  
SUPERIOR WEDNESDAY EVENING AND TO 29.2 INCHES OVER WESTERN QUEBEC  
BY THURSDAY MORNING. THE NEXT 30.1 INCH RIDGE THEN MOVES IN  
AROUND THURSDAY NIGHT, ALTHOUGH YET ANOTHER TROUGH, THIS ONE ABOUT  
30.0 INCHES, MOVES OVER LAKE SUPERIOR FRIDAY. A 30.5 INCH RIDGE  
WILL THEN MOVE OVER LAKE SUPERIOR ON SATURDAY.  
 

 
 
LSZ162-292300-  
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND  
PORTAGE MN BEYOND 5NM-  
949 AM EST MON NOV 29 2021 /849 AM CST MON NOV 29 2021/  
   
REST OF TODAY
 
SOUTH WINDS 5 TO 15 KNOTS BECOMING SOUTHEAST  
10 TO 20 KNOTS. NUMEROUS SNOW SHOWERS, POSSIBLY MIXED WITH RAIN  
LATE IN THE MORNING, THEN RAIN SHOWERS, POSSIBLY MIXED WITH SNOW  
IN THE AFTERNOON. WAVES CALM TO 2 FEET.    
TONIGHT
 
NORTHWEST WINDS 10 TO 20 KNOTS BACKING WEST BY  
MIDNIGHT, THEN INCREASING TO 15 TO 25 KNOTS LATE. ISOLATED RAIN  
AND SNOW SHOWERS IN THE EVENING. WAVES BUILDING TO 2 TO 4 FEET.    
TUESDAY
 
NORTHWEST WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO  
25 KNOTS. WAVES BUILDING TO 3 TO 6 FEET OCCASIONALLY TO 8 FEET,  
THEN SUBSIDING TO 2 TO 4 FEET.    
TUESDAY NIGHT
 
WEST WINDS 10 TO 20 KNOTS BACKING SOUTHWEST  
AFTER MIDNIGHT. A CHANCE OF SNOW SHOWERS, POSSIBLY MIXED WITH  
RAIN AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.    
WEDNESDAY
 
SOUTHWEST WINDS 15 TO 25 KNOTS BECOMING WEST 10 TO  
20 KNOTS IN THE AFTERNOON. RAIN AND SNOW SHOWERS LIKELY IN THE  
MORNING, THEN A CHANCE OF RAIN SHOWERS IN THE AFTERNOON. WAVES  
BUILDING TO 1 TO 3 FEET.    
WEDNESDAY NIGHT
 
WEST WINDS 15 TO 25 KNOTS VEERING NORTHWEST  
AFTER MIDNIGHT. WAVES BUILDING TO 3 TO 5 FEET OCCASIONALLY TO  
7 FEET.    
THURSDAY
 
NORTHWEST WINDS 15 TO 25 KNOTS BECOMING NORTH 5 TO  
15 KNOTS. WAVES SUBSIDING TO CALM TO 2 FEET.    
FRIDAY
 
WEST WINDS 10 TO 20 KNOTS BECOMING NORTHWEST 15 TO  
25 KNOTS. A CHANCE OF SNOW SHOWERS. WAVES BUILDING TO 3 TO 5 FEET  
OCCASIONALLY TO 7 FEET.  
 

 
 
LSZ263-292300-  
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-  
949 AM EST MON NOV 29 2021  
   
REST OF TODAY
 
SOUTH WINDS 5 TO 15 KNOTS BECOMING SOUTHEAST  
10 TO 20 KNOTS BY MID AFTERNOON. SCATTERED SNOW SHOWERS, POSSIBLY  
MIXED WITH RAIN LATE IN THE MORNING, THEN NUMEROUS RAIN AND SNOW  
SHOWERS IN THE AFTERNOON. WAVES CALM TO 2 FEET.    
TONIGHT
 
SOUTH WINDS 5 TO 15 KNOTS BECOMING WEST 10 TO 20 KNOTS  
BY MIDNIGHT, THEN INCREASING TO 15 TO 25 KNOTS LATE. ISOLATED  
RAIN AND SNOW SHOWERS IN THE EVENING. WAVES BUILDING TO 3 TO  
5 FEET OCCASIONALLY TO 7 FEET.    
TUESDAY
 
WEST WINDS 20 TO 30 KNOTS VEERING NORTHWEST. WAVES  
BUILDING TO 4 TO 8 FEET OCCASIONALLY TO 10 FEET.    
TUESDAY NIGHT
 
NORTHWEST WINDS 15 TO 25 KNOTS BECOMING  
SOUTHWEST 10 TO 20 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF SNOW  
SHOWERS, POSSIBLY MIXED WITH RAIN AFTER MIDNIGHT. WAVES SUBSIDING  
TO CALM TO 2 FEET.    
WEDNESDAY
 
SOUTHWEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO  
20 KNOTS IN THE AFTERNOON. RAIN AND SNOW SHOWERS LIKELY IN THE  
MORNING, THEN A CHANCE OF RAIN SHOWERS, POSSIBLY MIXED WITH SNOW  
IN THE AFTERNOON. WAVES BUILDING TO 1 TO 3 FEET.    
WEDNESDAY NIGHT
 
WEST WINDS 15 TO 25 KNOTS VEERING NORTHWEST  
AFTER MIDNIGHT. WAVES BUILDING TO 3 TO 5 FEET OCCASIONALLY TO  
7 FEET.    
THURSDAY
 
NORTHWEST WINDS 15 TO 25 KNOTS BECOMING NORTH 10 TO  
20 KNOTS. WAVES SUBSIDING TO CALM TO 2 FEET.    
FRIDAY
 
WEST WINDS 10 TO 20 KNOTS BECOMING NORTHWEST 15 TO  
25 KNOTS. A CHANCE OF SNOW SHOWERS. WAVES BUILDING TO 3 TO 6 FEET  
OCCASIONALLY TO 8 FEET.  
 

 
 
LSZ264-292300-  
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU  
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-  
949 AM EST MON NOV 29 2021  
 
...GALE WARNING IN EFFECT FROM TUESDAY MORNING THROUGH TUESDAY  
AFTERNOON...  
   
REST OF TODAY
 
SOUTHWEST WINDS 5 TO 15 KNOTS BACKING SOUTH.  
ISOLATED SNOW SHOWERS LATE IN THE MORNING. ISOLATED RAIN SHOWERS.  
NUMEROUS SNOW SHOWERS IN THE AFTERNOON. WAVES CALM TO 2 FEET.    
TONIGHT
 
SOUTH WINDS 5 TO 15 KNOTS VEERING WEST BY MIDNIGHT,  
THEN INCREASING TO 15 TO 25 KNOTS LATE. SCATTERED SNOW SHOWERS,  
POSSIBLY MIXED WITH RAIN IN THE EVENING. WAVES BUILDING TO 2 TO  
4 FEET.    
TUESDAY
 
WEST WINDS 20 TO 30 KNOTS BECOMING NORTHWEST GALES TO  
35 KNOTS. A SLIGHT CHANCE OF RAIN AND SNOW SHOWERS IN THE  
MORNING. WAVES BUILDING TO 6 TO 10 FEET OCCASIONALLY TO 13 FEET.    
TUESDAY NIGHT
 
NORTHWEST WINDS 20 TO 30 KNOTS BECOMING WEST  
5 TO 15 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF SNOW SHOWERS  
AFTER MIDNIGHT. WAVES SUBSIDING TO 1 TO 3 FEET.    
WEDNESDAY
 
SOUTH WINDS 5 TO 15 KNOTS BECOMING SOUTHWEST 10 TO  
20 KNOTS IN THE AFTERNOON. SNOW SHOWERS LIKELY IN THE MORNING. A  
CHANCE OF SNOW SHOWERS IN THE AFTERNOON. WAVES 1 TO 3 FEET.    
WEDNESDAY NIGHT
 
WEST WINDS 10 TO 20 KNOTS BECOMING NORTHWEST  
15 TO 25 KNOTS AFTER MIDNIGHT. A CHANCE OF RAIN AND SNOW SHOWERS.  
WAVES BUILDING TO 3 TO 5 FEET OCCASIONALLY TO 7 FEET.    
THURSDAY
 
NORTH WINDS 15 TO 25 KNOTS DIMINISHING TO 5 TO  
15 KNOTS. WAVES SUBSIDING TO CALM TO 2 FEET.    
FRIDAY
 
WEST WINDS 10 TO 20 KNOTS VEERING NORTHWEST. A CHANCE  
OF SNOW SHOWERS. LIGHT FREEZING SPRAY. WAVES BUILDING TO 3 TO  
6 FEET OCCASIONALLY TO 8 FEET.  
 

 
 
LSZ265-292300-  
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI  
BEYOND 5NM FROM SHORE-  
949 AM EST MON NOV 29 2021  
 
...GALE WARNING IN EFFECT FROM TUESDAY MORNING THROUGH TUESDAY  
AFTERNOON...  
   
REST OF TODAY
 
SOUTHWEST WINDS 10 TO 20 KNOTS BACKING SOUTH.  
SCATTERED SNOW SHOWERS, POSSIBLY MIXED WITH RAIN IN THE  
AFTERNOON. WAVES CALM TO 2 FEET.    
TONIGHT
 
SOUTH WINDS 10 TO 20 KNOTS VEERING WEST BY MIDNIGHT,  
THEN INCREASING TO 15 TO 25 KNOTS LATE. ISOLATED RAIN SHOWERS IN  
THE EVENING. SCATTERED SNOW SHOWERS. WAVES BUILDING TO 1 TO  
3 FEET.    
TUESDAY
 
WEST WINDS 20 TO 30 KNOTS BECOMING NORTHWEST GALES TO  
40 KNOTS. A SLIGHT CHANCE OF RAIN AND SNOW SHOWERS IN THE  
MORNING. WAVES BUILDING TO 5 TO 9 FEET OCCASIONALLY TO 11 FEET.    
TUESDAY NIGHT
 
NORTHWEST WINDS 20 TO 30 KNOTS BECOMING WEST  
10 TO 20 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF SNOW SHOWERS  
AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.    
WEDNESDAY
 
SOUTHWEST WINDS 15 TO 25 KNOTS. SNOW SHOWERS LIKELY.  
RAIN SHOWERS LIKELY IN THE AFTERNOON. WAVES BUILDING TO 1 TO  
3 FEET, THEN SUBSIDING TO CALM TO 2 FEET.    
WEDNESDAY NIGHT
 
WEST WINDS 15 TO 25 KNOTS BECOMING NORTHWEST  
20 TO 30 KNOTS AFTER MIDNIGHT. A CHANCE OF RAIN AND SNOW SHOWERS.  
WAVES BUILDING TO 3 TO 5 FEET OCCASIONALLY TO 7 FEET.    
THURSDAY
 
NORTHWEST WINDS 15 TO 25 KNOTS BECOMING NORTH 10 TO  
20 KNOTS. WAVES SUBSIDING TO CALM TO 2 FEET.    
FRIDAY
 
SOUTHWEST WINDS 10 TO 20 KNOTS BECOMING NORTHWEST 15 TO  
25 KNOTS. A CHANCE OF SNOW SHOWERS. WAVES BUILDING TO 3 TO 5 FEET  
OCCASIONALLY TO 7 FEET.  
 

 
 
LSZ266-292300-  
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-  
949 AM EST MON NOV 29 2021  
 
...GALE WARNING IN EFFECT FROM TUESDAY MORNING THROUGH TUESDAY  
EVENING...  
   
REST OF TODAY
 
WEST WINDS 5 TO 15 KNOTS BACKING SOUTHWEST BY  
LATE MORNING, THEN BECOMING SOUTH 10 TO 20 KNOTS BY MID  
AFTERNOON. SCATTERED SNOW SHOWERS. ISOLATED RAIN SHOWERS IN THE  
AFTERNOON. WAVES 1 TO 3 FEET SUBSIDING TO CALM TO 2 FEET.    
TONIGHT
 
SOUTH WINDS 10 TO 20 KNOTS VEERING WEST LATE.  
SCATTERED SNOW SHOWERS, POSSIBLY MIXED WITH RAIN. WAVES BUILDING  
TO 2 TO 4 FEET.    
TUESDAY
 
WEST WINDS 20 TO 30 KNOTS BECOMING NORTHWEST GALES TO  
40 KNOTS. A CHANCE OF RAIN AND SNOW SHOWERS. WAVES BUILDING TO  
10 TO 14 FEET OCCASIONALLY TO 18 FEET.    
TUESDAY NIGHT
 
NORTHWEST WINDS 20 TO 30 KNOTS BECOMING WEST  
10 TO 20 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF SNOW SHOWERS  
AFTER MIDNIGHT. WAVES SUBSIDING TO 3 TO 5 FEET OCCASIONALLY TO  
7 FEET.    
WEDNESDAY
 
SOUTHWEST WINDS 15 TO 25 KNOTS. SNOW SHOWERS LIKELY.  
WAVES SUBSIDING TO 2 TO 4 FEET.    
WEDNESDAY NIGHT
 
WEST WINDS 15 TO 25 KNOTS VEERING NORTHWEST  
AFTER MIDNIGHT. A CHANCE OF RAIN AND SNOW SHOWERS. WAVES BUILDING  
TO 3 TO 6 FEET OCCASIONALLY TO 8 FEET.    
THURSDAY
 
NORTHWEST WINDS 20 TO 30 KNOTS BECOMING NORTH 10 TO  
20 KNOTS. WAVES BUILDING TO 4 TO 7 FEET OCCASIONALLY TO 9 FEET,  
THEN SUBSIDING TO 1 TO 3 FEET.    
FRIDAY
 
WEST WINDS 10 TO 20 KNOTS BECOMING NORTHWEST 15 TO  
25 KNOTS. A CHANCE OF SNOW SHOWERS. LIGHT FREEZING SPRAY. WAVES  
SUBSIDING TO CALM TO 2 FEET, THEN BUILDING TO 4 TO 7 FEET  
OCCASIONALLY TO 9 FEET.  
 

 
 
LSZ267-292300-  
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF  
SHORE TO THE US/CANADIAN BORDER-  
949 AM EST MON NOV 29 2021  
 
...GALE WARNING IN EFFECT FROM TUESDAY AFTERNOON THROUGH TUESDAY  
EVENING...  
   
REST OF TODAY
 
WEST WINDS 10 TO 20 KNOTS BACKING SOUTHWEST.  
SCATTERED SNOW SHOWERS, POSSIBLY MIXED WITH RAIN. WAVES 1 TO  
3 FEET SUBSIDING TO CALM TO 2 FEET.    
TONIGHT
 
SOUTH WINDS 10 TO 20 KNOTS VEERING SOUTHWEST LATE.  
SCATTERED SNOW SHOWERS, POSSIBLY MIXED WITH RAIN. WAVES CALM TO  
2 FEET.    
TUESDAY
 
WEST WINDS 15 TO 25 KNOTS BECOMING NORTHWEST GALES TO  
40 KNOTS. A CHANCE OF RAIN AND SNOW SHOWERS. WAVES BUILDING TO  
10 TO 14 FEET OCCASIONALLY TO 18 FEET.    
TUESDAY NIGHT
 
NORTHWEST WINDS 20 TO 30 KNOTS BECOMING WEST  
15 TO 25 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF SNOW SHOWERS  
AFTER MIDNIGHT. WAVES SUBSIDING TO 3 TO 6 FEET OCCASIONALLY TO  
8 FEET.    
WEDNESDAY
 
SOUTHWEST WINDS 15 TO 25 KNOTS. SNOW SHOWERS. RAIN  
SHOWERS IN THE AFTERNOON. WAVES SUBSIDING TO 2 TO 4 FEET.    
WEDNESDAY NIGHT
 
SOUTHWEST WINDS 15 TO 25 KNOTS VEERING  
NORTHWEST AFTER MIDNIGHT. RAIN AND SNOW SHOWERS LIKELY IN THE  
EVENING, THEN A CHANCE OF RAIN AND SNOW SHOWERS AFTER MIDNIGHT.  
WAVES BUILDING TO 3 TO 6 FEET OCCASIONALLY TO 8 FEET.    
THURSDAY
 
NORTHWEST WINDS 20 TO 30 KNOTS BECOMING NORTH 10 TO  
20 KNOTS. A CHANCE OF SNOW SHOWERS. WAVES BUILDING TO 4 TO 7 FEET  
OCCASIONALLY TO 9 FEET, THEN SUBSIDING TO CALM TO 2 FEET.    
FRIDAY
 
WEST WINDS 10 TO 20 KNOTS BECOMING NORTHWEST 15 TO  
25 KNOTS. A CHANCE OF SNOW SHOWERS. WAVES BUILDING TO 3 TO 6 FEET  
OCCASIONALLY TO 8 FEET.  
 

 
LSZ261-292300-  
MAFOR 2916/  
SUPERIOR WEST 11417 11316 11310 19316 11610 11620 12630 11740.  
WAVES 1 FOOT OR LESS THIS AFTERNOON. WAVES 1 TO 2 FEET BUILDING  
TO 2 TO 4 FEET TONIGHT. WAVES 3 TO 6 FEET TUESDAY MORNING.  
 
SUPERIOR NORTH CENTRAL...GALE WARNING IN EFFECT...11400 11410  
19417 11417 11410 19417 11510 11620 11630 11750. WAVES 1 FOOT OR  
LESS THIS AFTERNOON. WAVES 1 TO 3 FEET TONIGHT. WAVES 3 TO 6 FEET  
BUILDING TO 5 TO 8 FEET TUESDAY MORNING.  
 
SUPERIOR SOUTH CENTRAL...GALE WARNING IN EFFECT...11510 13410  
19417 11510 11620 11630 11750. WAVES 1 TO 3 FEET THIS AFTERNOON  
AND TONIGHT. WAVES 3 TO 5 FEET BUILDING TO 5 TO 7 FEET TUESDAY  
MORNING.  
 
SUPERIOR EAST...GALE WARNING IN EFFECT...11510 11510 19517 11410  
19417 12510 19517 11520 11620 11640. WAVES 1 TO 2 FEET THIS  
AFTERNOON AND TONIGHT. WAVES 2 TO 4 FEET BUILDING TO 4 TO 7 FEET  
TUESDAY MORNING.  
 

 
 
TDUD  
 
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

FORECAST
A forecast provides a description of the most significant weather conditions expected during the current and following day. The exact content depends upon the intended user, such as the marine or farm forecast audiences.