Marine Weather Forecast from Environment Canada

Winds


Issued 06:30 PM EDT 23 October 2019

Tonight and Thursday. Strong wind warning in effect. Wind west 20 knots diminishing to northwest 15 this evening then increasing to northwest 20 Thursday morning. Wind diminishing to northwest 15 Thursday evening.

Extended Forecast


Issued 06:30 PM EDT 23 October 2019
Friday Wind northwest 15 knots increasing to southwest 25 in the afternoon.
Saturday Wind southwest 20 knots.
Sunday Wind southwest 15 knots increasing to west 25.

Waves


Issued 06:30 PM EDT 23 October 2019

Tonight and Thursday. Waves 2 metres subsiding to one near midnight then building to 2 near noon Thursday. Waves subsiding to one Thursday evening.

Ice Forecast*


Issued 12:00 PM EDT 19 May 2019

Tonight and Thursday At 6:30 p.m. EDT tonight low 991 mb located over northern Ontario.
By 6:30 p.m. EDT Thursday departing low 995 mb located over
northern Quebec.

At 6:30 p.m. EDT tonight ridge located on a line north-south
over Alberta.
By 6:30 p.m. EDT Thursday ridge located on a line north-south over
the Ontario - Manitoba border.

Great Lakes - Lake Superior Area

Another Region

 

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



  
135  
FZUS63 KMQT 232002  
GLFLS  
 
OPEN LAKE FORECAST FOR LAKE SUPERIOR  
NATIONAL WEATHER SERVICE MARQUETTE MI  
402 PM EDT WED OCT 23 2019  
 
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 30.5 INCH HIGH PRESSURE WILL BEGIN MOVING SOUTHEAST  
OUT OF THE CANADIAN ROCKIES INTO THE CENTRAL PLAINS THURSDAY  
AFTERNOON, EXTENDING A 30.3 INCH RIDGE OVER THE UPPER GREAT LAKES  
THURSDAY NIGHT. THIS RIDGE WILL MOVE TOWARDS THE NORTHEAST  
THROUGHOUT FRIDAY AND INTO SATURDAY, ARRIVING IN NEW ENGLAND BY  
SATURDAY EVENING BUT WEAKENING TO 30.3 INCHES AS IT DOES SO. IN  
ITS WAKE, A 29.3 INCH LOW PRESSURE MOVING EAST ACROSS THE  
CANADIAN PRAIRIES WILL SWING A 29.8 INCH TROUGH ACROSS LAKE  
SUPERIOR SATURDAY NIGHT. MEANWHILE, ANOTHER STRONG RIDGE WILL BE  
MOVING SOUTHEAST ALONG THE ROCKIES SUNDAY, AND WILL BEGIN TO MOVE  
EAST TOWARDS THE UPPER GREAT LAKES MONDAY, ARRIVING EARLY TUESDAY  
MORNING.  
 
LSZ162-240415-  
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND  
PORTAGE MN BEYOND 5NM-  
402 PM EDT WED OCT 23 2019 /302 PM CDT WED OCT 23 2019/  
   
LATE THIS AFTERNOON
 
WEST WINDS 10 TO 20 KNOTS. ISOLATED RAIN  
SHOWERS. WAVES 2 TO 4 FEET.    
TONIGHT
 
NORTHWEST WINDS 10 TO 20 KNOTS. ISOLATED RAIN SHOWERS  
THROUGH MIDNIGHT. WAVES SUBSIDING TO 1 TO 3 FEET.    
THURSDAY
 
NORTHWEST WINDS 10 TO 20 KNOTS BACKING WEST IN THE  
AFTERNOON. WAVES BUILDING TO 2 TO 4 FEET, THEN SUBSIDING TO 1 TO  
3 FEET.    
THURSDAY NIGHT
 
WEST WINDS 5 TO 15 KNOTS. WAVES SUBSIDING TO  
CALM TO 2 FEET.    
FRIDAY
 
SOUTHWEST WINDS 10 TO 20 KNOTS. WAVES BUILDING TO 3 TO  
5 FEET OCCASIONALLY TO 7 FEET.    
FRIDAY NIGHT
 
SOUTHWEST WINDS 15 TO 25 KNOTS. WAVES 3 TO 5 FEET  
OCCASIONALLY TO 7 FEET.    
SATURDAY
 
SOUTHWEST WINDS 15 TO 25 KNOTS. WAVES 3 TO 6 FEET  
OCCASIONALLY TO 8 FEET, THEN SUBSIDING TO 2 TO 4 FEET.    
SATURDAY NIGHT
 
SOUTHWEST WINDS 5 TO 15 KNOTS VEERING NORTHWEST  
AFTER MIDNIGHT. WAVES SUBSIDING TO CALM TO 2 FEET.    
SUNDAY
 
NORTHWEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO  
15 KNOTS. WAVES BUILDING TO 2 TO 4 FEET, THEN SUBSIDING TO 1 TO  
3 FEET.    
MONDAY
 
WEST WINDS 10 TO 20 KNOTS. A CHANCE OF RAIN AND SNOW  
SHOWERS. WAVES SUBSIDING TO CALM TO 2 FEET, THEN BUILDING TO 1 TO  
3 FEET.  
 

 
 
LSZ263-240415-  
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-  
402 PM EDT WED OCT 23 2019  
   
LATE THIS AFTERNOON
 
WEST WINDS 15 TO 25 KNOTS. ISOLATED RAIN  
SHOWERS. WAVES 4 TO 7 FEET OCCASIONALLY TO 9 FEET.    
TONIGHT
 
NORTHWEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO  
20 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO 2 TO 4 FEET.    
THURSDAY
 
NORTHWEST WINDS 10 TO 20 KNOTS BACKING WEST IN THE  
AFTERNOON. WAVES 2 TO 4 FEET.    
THURSDAY NIGHT
 
WEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO  
15 KNOTS AFTER MIDNIGHT. WAVES SUBSIDING TO 1 TO 3 FEET.    
FRIDAY
 
SOUTHWEST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO  
25 KNOTS BY MID AFTERNOON. WAVES BUILDING TO 3 TO 5 FEET  
OCCASIONALLY TO 7 FEET.    
FRIDAY NIGHT
 
SOUTHWEST WINDS 15 TO 25 KNOTS. WAVES BUILDING TO  
3 TO 6 FEET OCCASIONALLY TO 8 FEET.    
SATURDAY
 
SOUTHWEST WINDS 20 TO 30 KNOTS. WAVES SUBSIDING TO  
3 TO 5 FEET OCCASIONALLY TO 7 FEET.    
SATURDAY NIGHT
 
SOUTHWEST WINDS 10 TO 20 KNOTS BECOMING  
NORTHWEST 5 TO 15 KNOTS AFTER MIDNIGHT. A CHANCE OF RAIN SHOWERS.  
WAVES SUBSIDING TO CALM TO 2 FEET, THEN BUILDING TO 1 TO 3 FEET.    
SUNDAY
 
NORTHWEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO  
15 KNOTS. WAVES BUILDING TO 2 TO 4 FEET.    
MONDAY
 
WEST WINDS 10 TO 20 KNOTS. A CHANCE OF RAIN AND SNOW  
SHOWERS. WAVES SUBSIDING TO 1 TO 3 FEET.  
 

 
 
LSZ264-240415-  
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU  
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-  
402 PM EDT WED OCT 23 2019  
   
LATE THIS AFTERNOON
 
WEST WINDS 15 TO 25 KNOTS. WAVES 4 TO  
7 FEET OCCASIONALLY TO 9 FEET.    
TONIGHT
 
NORTHWEST WINDS 15 TO 25 KNOTS. ISOLATED RAIN SHOWERS  
THROUGH MIDNIGHT. WAVES SUBSIDING TO 3 TO 5 FEET OCCASIONALLY TO  
7 FEET.    
THURSDAY
 
NORTHWEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO  
20 KNOTS IN THE AFTERNOON, THEN BACKING WEST LATE. WAVES  
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 1 TO 3 FEET.    
FRIDAY
 
WEST WINDS 10 TO 20 KNOTS BACKING SOUTHWEST BY MID  
AFTERNOON. WAVES BUILDING TO 3 TO 5 FEET OCCASIONALLY TO 7 FEET.    
FRIDAY NIGHT
 
SOUTHWEST WINDS 15 TO 25 KNOTS. WAVES 3 TO 6 FEET  
OCCASIONALLY TO 8 FEET.    
SATURDAY
 
SOUTHWEST WINDS 15 TO 25 KNOTS. WAVES SUBSIDING TO  
3 TO 5 FEET OCCASIONALLY TO 7 FEET.    
SATURDAY NIGHT
 
SOUTHWEST WINDS 10 TO 20 KNOTS BECOMING WEST  
5 TO 15 KNOTS AFTER MIDNIGHT. A CHANCE OF RAIN SHOWERS. WAVES  
SUBSIDING TO 1 TO 3 FEET.    
SUNDAY
 
NORTHWEST WINDS 10 TO 20 KNOTS. WAVES BUILDING TO 2 TO  
4 FEET, THEN SUBSIDING TO 1 TO 3 FEET.    
MONDAY
 
WEST WINDS 10 TO 20 KNOTS. A CHANCE OF RAIN SHOWERS,  
POSSIBLY MIXED WITH SNOW. WAVES BUILDING TO 2 TO 4 FEET, THEN  
SUBSIDING TO 1 TO 3 FEET.  
 

 
 
LSZ265-240415-  
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI  
BEYOND 5NM FROM SHORE-  
402 PM EDT WED OCT 23 2019  
   
LATE THIS AFTERNOON
 
WEST WINDS 20 TO 30 KNOTS. ISOLATED  
SHOWERS. WAVES 3 TO 6 FEET OCCASIONALLY TO 8 FEET.    
TONIGHT
 
WEST WINDS 20 TO 30 KNOTS BECOMING NORTHWEST 15 TO  
25 KNOTS AFTER MIDNIGHT, THEN INCREASING TO 20 TO 30 KNOTS LATE.  
ISOLATED RAIN SHOWERS. WAVES 3 TO 5 FEET OCCASIONALLY TO 7 FEET.    
THURSDAY
 
NORTHWEST WINDS 20 TO 30 KNOTS BACKING WEST IN THE  
AFTERNOON, THEN DIMINISHING TO 15 TO 25 KNOTS LATE. ISOLATED RAIN  
SHOWERS BY MID AFTERNOON. WAVES SUBSIDING TO 2 TO 4 FEET.    
THURSDAY NIGHT
 
WEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO  
20 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF RAIN SHOWERS. A  
SLIGHT CHANCE OF SNOW SHOWERS AFTER MIDNIGHT. WAVES SUBSIDING TO  
CALM TO 2 FEET.    
FRIDAY
 
WEST WINDS 10 TO 20 KNOTS BACKING SOUTHWEST BY MID  
AFTERNOON. WAVES CALM TO 2 FEET.    
FRIDAY NIGHT
 
SOUTHWEST WINDS 10 TO 20 KNOTS INCREASING TO  
15 TO 25 KNOTS AFTER MIDNIGHT. WAVES CALM TO 2 FEET.    
SATURDAY
 
SOUTHWEST WINDS 15 TO 25 KNOTS BACKING SOUTH BY MID  
AFTERNOON. WAVES BUILDING TO 1 TO 3 FEET, THEN SUBSIDING TO CALM  
TO 2 FEET.    
SATURDAY NIGHT
 
SOUTHWEST WINDS 10 TO 20 KNOTS VEERING WEST  
AFTER MIDNIGHT. A CHANCE OF RAIN SHOWERS. WAVES CALM TO 2 FEET.    
SUNDAY
 
NORTHWEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO  
20 KNOTS. WAVES CALM TO 2 FEET.    
MONDAY
 
WEST WINDS 10 TO 20 KNOTS. A CHANCE OF RAIN AND SNOW  
SHOWERS. WAVES CALM TO 2 FEET.  
 

 
 
LSZ266-240415-  
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-  
402 PM EDT WED OCT 23 2019  
   
LATE THIS AFTERNOON
 
WEST WINDS 20 TO 30 KNOTS. ISOLATED  
SHOWERS. WAVES 6 TO 9 FEET OCCASIONALLY TO 11 FEET.    
TONIGHT
 
WEST WINDS 15 TO 25 KNOTS VEERING NORTHWEST AFTER  
MIDNIGHT. SCATTERED RAIN SHOWERS. WAVES SUBSIDING TO 3 TO 6 FEET  
OCCASIONALLY TO 8 FEET.    
THURSDAY
 
NORTHWEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO  
20 KNOTS IN THE AFTERNOON, THEN BACKING WEST LATE. ISOLATED RAIN  
SHOWERS. WAVES BUILDING TO 4 TO 7 FEET OCCASIONALLY TO 9 FEET,  
THEN SUBSIDING TO 3 TO 5 FEET OCCASIONALLY TO 7 FEET.    
THURSDAY NIGHT
 
WEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO  
15 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF RAIN SHOWERS. WAVES  
SUBSIDING TO 2 TO 4 FEET.    
FRIDAY
 
WEST WINDS 10 TO 20 KNOTS BACKING SOUTHWEST BY MID  
AFTERNOON. WAVES BUILDING TO 3 TO 5 FEET OCCASIONALLY TO 7 FEET.    
FRIDAY NIGHT
 
SOUTHWEST WINDS 10 TO 20 KNOTS. WAVES 3 TO 6 FEET  
OCCASIONALLY TO 8 FEET.    
SATURDAY
 
SOUTHWEST WINDS 15 TO 25 KNOTS BACKING SOUTH BY MID  
AFTERNOON. WAVES BUILDING TO 4 TO 7 FEET OCCASIONALLY TO 9 FEET.    
SATURDAY NIGHT
 
SOUTHWEST WINDS 15 TO 25 KNOTS DIMINISHING TO  
10 TO 20 KNOTS AFTER MIDNIGHT. A CHANCE OF RAIN SHOWERS. WAVES  
SUBSIDING TO 1 TO 3 FEET.    
SUNDAY
 
NORTHWEST WINDS 10 TO 20 KNOTS. WAVES BUILDING TO 3 TO  
5 FEET OCCASIONALLY TO 7 FEET, THEN SUBSIDING TO 2 TO 4 FEET.    
MONDAY
 
WEST WINDS 10 TO 20 KNOTS. A CHANCE OF RAIN AND SNOW  
SHOWERS. WAVES SUBSIDING TO 1 TO 3 FEET.  
 

 
 
LSZ267-240415-  
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF  
SHORE TO THE US/CANADIAN BORDER-  
402 PM EDT WED OCT 23 2019  
   
LATE THIS AFTERNOON
 
WEST WINDS TO 30 KNOTS WITH A FEW GALE  
FORCE GUSTS TO 35 KNOTS POSSIBLE. SCATTERED SHOWERS. WAVES 6 TO  
9 FEET OCCASIONALLY TO 11 FEET.    
TONIGHT
 
WEST WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO  
25 KNOTS AFTER MIDNIGHT, THEN BECOMING NORTHWEST 20 TO 30 KNOTS  
LATE. SCATTERED RAIN SHOWERS. WAVES SUBSIDING TO 4 TO 7 FEET  
OCCASIONALLY TO 9 FEET.    
THURSDAY
 
NORTHWEST WINDS 20 TO 30 KNOTS BECOMING WEST 15 TO  
25 KNOTS LATE. SCATTERED RAIN SHOWERS. WAVES SUBSIDING TO 3 TO  
6 FEET OCCASIONALLY TO 8 FEET.    
THURSDAY NIGHT
 
WEST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO  
20 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF RAIN SHOWERS. WAVES  
SUBSIDING TO 2 TO 4 FEET.    
FRIDAY
 
WEST WINDS 10 TO 20 KNOTS. A SLIGHT CHANCE OF RAIN  
SHOWERS THROUGH EARLY AFTERNOON. WAVES SUBSIDING TO 1 TO 3 FEET.    
FRIDAY NIGHT
 
SOUTHWEST WINDS 10 TO 20 KNOTS INCREASING TO  
15 TO 25 KNOTS AFTER MIDNIGHT. WAVES BUILDING TO 3 TO 6 FEET  
OCCASIONALLY TO 8 FEET.    
SATURDAY
 
SOUTHWEST WINDS 15 TO 25 KNOTS BACKING SOUTH BY MID  
AFTERNOON. WAVES 3 TO 6 FEET OCCASIONALLY TO 8 FEET.    
SATURDAY NIGHT
 
SOUTH WINDS 15 TO 25 KNOTS BECOMING SOUTHWEST  
10 TO 20 KNOTS AFTER MIDNIGHT. A CHANCE OF SHOWERS AFTER  
MIDNIGHT. WAVES SUBSIDING TO 1 TO 3 FEET.    
SUNDAY
 
NORTHWEST WINDS 10 TO 20 KNOTS. A CHANCE OF RAIN  
SHOWERS. WAVES BUILDING TO 3 TO 5 FEET OCCASIONALLY TO 7 FEET,  
THEN SUBSIDING TO 2 TO 4 FEET.    
MONDAY
 
WEST WINDS 10 TO 20 KNOTS. A CHANCE OF RAIN AND SNOW  
SHOWERS. WAVES SUBSIDING TO 1 TO 3 FEET, THEN BUILDING TO 2 TO  
4 FEET.  
 

 
 
LSZ261-240415-  
MAFOR 2321/  
SUPERIOR WEST 11630 12730 14720 11620. WAVES 2 TO 5 FEET  
TONIGHT AND INTO THURSDAY.  
 
SUPERIOR NORTH CENTRAL 11640 15730 11630. WAVES 4 TO 7 FEET  
SUBSIDING TO 2 TO 5 FEET TONIGHT AND INTO THURSDAY.  
 
SUPERIOR SOUTH CENTRAL 12640 14730 11730 11630. WAVES 3 TO 7 FEET  
TONIGHT AND INTO THURSDAY.  
 
SUPERIOR EAST 12640 19646 11630 19636 14730 19736 11730. WAVES 5  
TO 9 FEET TONIGHT. WAVES 4 TO 7 FEET THURSDAY.  
 

 
 
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 LAND
The fact that the Arctic region can resemble another planet isn’t lost on NASA.

Aside from being the world’s largest uninhabited island, Devon Island is home to a NASA research station that allows scientists to simulate living on Mars, as its dry, cold climate isn’t too far off from that of the Red Planet.