Marine Weather Forecast from Environment Canada

Winds


Issued 10:30 AM EDT 30 March 2020

Today Tonight and Tuesday. Wind north 30 knots diminishing to northeast 20 early this evening and to northeast 15 late overnight. Wind diminishing to northeast 10 Tuesday afternoon.

Extended Forecast


Issued 03:00 AM EDT 30 March 2020
Wednesday Wind light.
Thursday Wind northeast 15 knots diminishing to light late in the day.
Friday Wind light increasing to southeast 25 knots.

Waves


Issued 10:30 AM EDT 30 March 2020

Today Tonight and Tuesday. Waves 2 metres subsiding to one this evening and to one half metre or less Tuesday evening.

Ice Forecast*


Issued 12:00 PM EDT 30 March 2020

Today Tonight and Tuesday Open water except 7 tenths thick lake ice along the eastern 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



  
608  
FZUS63 KMQT 302001  
GLFLS  
 
OPEN LAKE FORECAST FOR LAKE SUPERIOR  
NATIONAL WEATHER SERVICE MARQUETTE MI  
401 PM EDT MON MAR 30 2020  
 
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 PRESSURE NEAR THE ONTARIO-QUEBEC  
BORDER THIS AFTERNOON WILL CONTINUE TO WEAKEN TO 29.9 INCHES  
NORTH OF LAKE ONTARIO BY LATE TONIGHT. A 30.2 INCH RIDGE OF HIGH  
PRESSURE WILL BUILD INTO THE UPPER GREAT LAKES EARLY TUESDAY  
MORNING AND REMAIN THROUGH THURSDAY. A 29.9 INCH LOW PRESSURE  
TROUGH WILL APPROACH LAKE SUPERIOR ON FRIDAY AND WILL MOVE ACROSS  
THE BY SATURDAY MORNING.  
 
LSZ162-310415-  
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND  
PORTAGE MN BEYOND 5NM-  
401 PM EDT MON MAR 30 2020 /301 PM CDT MON MAR 30 2020/  
   
LATE THIS AFTERNOON
 
EAST WINDS 5 TO 15 KNOTS. WAVES 1 TO  
3 FEET SUBSIDING TO CALM TO 2 FEET.    
TONIGHT
 
EAST WINDS 5 TO 15 KNOTS BACKING NORTHEAST AFTER  
MIDNIGHT, THEN INCREASING TO 10 TO 20 KNOTS LATE. WAVES CALM TO  
2 FEET.    
TUESDAY
 
EAST WINDS 10 TO 20 KNOTS BACKING NORTHEAST IN THE  
AFTERNOON. WAVES BUILDING TO 1 TO 3 FEET.    
TUESDAY NIGHT
 
EAST WINDS 10 TO 20 KNOTS. WAVES SUBSIDING TO  
CALM TO 2 FEET.    
WEDNESDAY
 
EAST WINDS 5 TO 15 KNOTS INCREASING TO 15 TO  
25 KNOTS BY MID AFTERNOON. A CHANCE OF RAIN. WAVES BUILDING TO  
2 TO 4 FEET.    
WEDNESDAY NIGHT
 
EAST WINDS 10 TO 20 KNOTS. A CHANCE OF RAIN.  
WAVES SUBSIDING TO 1 TO 3 FEET.    
THURSDAY
 
EAST WINDS 5 TO 15 KNOTS INCREASING TO 15 TO 25 KNOTS  
BY MID AFTERNOON. A CHANCE OF RAIN. WAVES SUBSIDING TO CALM TO  
2 FEET, THEN BUILDING TO 1 TO 3 FEET.    
THURSDAY NIGHT
 
EAST WINDS 10 TO 20 KNOTS. RAIN LIKELY. WAVES  
1 TO 3 FEET.    
FRIDAY
 
EAST WINDS 10 TO 20 KNOTS BECOMING WEST 15 TO 25 KNOTS.  
RAIN LIKELY, THEN A CHANCE OF RAIN. WAVES SUBSIDING TO CALM TO  
2 FEET, THEN BUILDING TO 1 TO 3 FEET.    
SATURDAY
 
WEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO  
15 KNOTS. A CHANCE OF RAIN. WAVES CALM TO 2 FEET.  
 

 
 
LSZ263-310415-  
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-  
401 PM EDT MON MAR 30 2020  
   
LATE THIS AFTERNOON
 
NORTHEAST WINDS 5 TO 15 KNOTS. WAVES 2 TO  
4 FEET SUBSIDING TO 1 TO 3 FEET.    
TONIGHT
 
NORTHEAST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO  
20 KNOTS AFTER MIDNIGHT. WAVES BUILDING TO 2 TO 4 FEET.    
TUESDAY
 
NORTHEAST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO  
15 KNOTS LATE. WAVES SUBSIDING TO 1 TO 3 FEET.    
TUESDAY NIGHT
 
EAST WINDS 5 TO 15 KNOTS. WAVES SUBSIDING TO  
CALM TO 2 FEET.    
WEDNESDAY
 
EAST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO  
20 KNOTS BY MID AFTERNOON. A SLIGHT CHANCE OF RAIN BY MID  
AFTERNOON. WAVES BUILDING TO 1 TO 3 FEET.    
WEDNESDAY NIGHT
 
EAST WINDS 10 TO 20 KNOTS. A CHANCE OF RAIN.  
WAVES SUBSIDING TO CALM TO 2 FEET.    
THURSDAY
 
EAST WINDS 10 TO 20 KNOTS. A CHANCE OF RAIN. WAVES  
BUILDING TO 1 TO 3 FEET.    
THURSDAY NIGHT
 
EAST WINDS 10 TO 20 KNOTS VEERING SOUTHEAST  
AFTER MIDNIGHT. A CHANCE OF RAIN. WAVES 1 TO 3 FEET.    
FRIDAY
 
SOUTHEAST WINDS 10 TO 20 KNOTS BECOMING WEST 15 TO  
25 KNOTS. A CHANCE OF RAIN, THEN RAIN LIKELY. WAVES BUILDING TO  
3 TO 5 FEET OCCASIONALLY TO 7 FEET, THEN SUBSIDING TO 1 TO  
3 FEET.    
SATURDAY
 
WEST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO  
15 KNOTS. A CHANCE OF RAIN. WAVES SUBSIDING TO CALM TO 2 FEET.  
 

 
 
LSZ264-310415-  
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU  
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-  
401 PM EDT MON MAR 30 2020  
   
LATE THIS AFTERNOON
 
NORTH WINDS 10 TO 20 KNOTS. WAVES 3 TO  
6 FEET OCCASIONALLY TO 8 FEET.    
TONIGHT
 
NORTHEAST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO  
15 KNOTS LATE. WAVES SUBSIDING TO 2 TO 4 FEET.    
TUESDAY
 
NORTHEAST WINDS 5 TO 15 KNOTS. WAVES SUBSIDING TO CALM  
TO 2 FEET.    
TUESDAY NIGHT
 
EAST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.    
WEDNESDAY
 
EAST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.    
WEDNESDAY NIGHT
 
EAST WINDS 5 TO 15 KNOTS. WAVES CALM TO  
2 FEET.    
THURSDAY
 
EAST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.    
THURSDAY NIGHT
 
EAST WINDS 5 TO 15 KNOTS VEERING SOUTHEAST  
AFTER MIDNIGHT. A CHANCE OF RAIN. WAVES BUILDING TO 1 TO 3 FEET.    
FRIDAY
 
SOUTHEAST WINDS 15 TO 25 KNOTS VEERING WEST. A CHANCE  
OF RAIN, THEN RAIN LIKELY. WAVES BUILDING TO 3 TO 6 FEET  
OCCASIONALLY TO 8 FEET, THEN SUBSIDING TO 2 TO 4 FEET.    
SATURDAY
 
WEST WINDS 5 TO 15 KNOTS. A CHANCE OF RAIN. WAVES  
SUBSIDING TO CALM TO 2 FEET.  
 

 
 
LSZ265-310415-  
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI  
BEYOND 5NM FROM SHORE-  
401 PM EDT MON MAR 30 2020  
   
LATE THIS AFTERNOON
 
NORTH WINDS 15 TO 25 KNOTS. WAVES 4 TO  
8 FEET OCCASIONALLY TO 10 FEET.    
TONIGHT
 
NORTH WINDS 10 TO 20 KNOTS BECOMING NORTHEAST 15 TO  
25 KNOTS AFTER MIDNIGHT, THEN DIMINISHING TO 10 TO 20 KNOTS LATE.  
WAVES SUBSIDING TO 2 TO 4 FEET.    
TUESDAY
 
NORTHEAST WINDS 10 TO 20 KNOTS DIMINISHING TO 5 TO  
15 KNOTS LATE. WAVES SUBSIDING TO CALM TO 2 FEET.    
TUESDAY NIGHT
 
NORTHEAST WINDS 5 TO 15 KNOTS BACKING NORTH  
LATE. WAVES CALM TO 2 FEET.    
WEDNESDAY
 
EAST WINDS 5 TO 15 KNOTS. WAVES CALM TO 2 FEET.    
WEDNESDAY NIGHT
 
EAST WINDS 5 TO 15 KNOTS VEERING SOUTHEAST  
AFTER MIDNIGHT. WAVES CALM TO 2 FEET.    
THURSDAY
 
SOUTHEAST WINDS 5 TO 15 KNOTS BECOMING EAST 10 TO  
20 KNOTS BY MID AFTERNOON. WAVES CALM TO 2 FEET.    
THURSDAY NIGHT
 
SOUTHEAST WINDS 10 TO 20 KNOTS. WAVES CALM TO  
2 FEET.    
FRIDAY
 
SOUTHEAST WINDS 10 TO 20 KNOTS BECOMING WEST 15 TO  
25 KNOTS. A CHANCE OF RAIN, THEN RAIN LIKELY. WAVES BUILDING TO  
3 TO 5 FEET OCCASIONALLY TO 7 FEET, THEN SUBSIDING TO CALM TO  
2 FEET.    
SATURDAY
 
WEST WINDS 10 TO 20 KNOTS. A CHANCE OF RAIN. WAVES  
CALM TO 2 FEET.  
 

 
 
LSZ266-310415-  
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-  
401 PM EDT MON MAR 30 2020  
   
LATE THIS AFTERNOON
 
NORTH WINDS 15 TO 25 KNOTS. WAVES 5 TO  
9 FEET OCCASIONALLY TO 11 FEET.    
TONIGHT
 
NORTH WINDS 15 TO 25 KNOTS VEERING NORTHEAST AFTER  
MIDNIGHT. WAVES SUBSIDING TO 2 TO 4 FEET.    
TUESDAY
 
NORTHEAST WINDS 10 TO 20 KNOTS. WAVES SUBSIDING TO  
CALM TO 2 FEET.    
TUESDAY NIGHT
 
NORTHEAST WINDS 5 TO 15 KNOTS VEERING EAST AFTER  
MIDNIGHT. WAVES CALM TO 2 FEET.    
WEDNESDAY
 
EAST WINDS 5 TO 15 KNOTS BACKING NORTHEAST BY MID  
AFTERNOON. WAVES CALM TO 2 FEET.    
WEDNESDAY NIGHT
 
NORTHEAST WINDS 5 TO 15 KNOTS VEERING EAST  
AFTER MIDNIGHT. WAVES CALM TO 2 FEET.    
THURSDAY
 
EAST WINDS 5 TO 15 KNOTS INCREASING TO 10 TO 20 KNOTS  
BY MID AFTERNOON. WAVES CALM TO 2 FEET.    
THURSDAY NIGHT
 
EAST WINDS 10 TO 20 KNOTS VEERING SOUTHEAST  
AFTER MIDNIGHT. WAVES BUILDING TO 1 TO 3 FEET.    
FRIDAY
 
SOUTHEAST WINDS 15 TO 25 KNOTS VEERING WEST. RAIN  
LIKELY. WAVES BUILDING TO 3 TO 6 FEET OCCASIONALLY TO 8 FEET,  
THEN SUBSIDING TO 2 TO 4 FEET.    
SATURDAY
 
WEST WINDS 10 TO 20 KNOTS. A CHANCE OF RAIN. WAVES  
SUBSIDING TO CALM TO 2 FEET.  
 

 
 
LSZ267-310415-  
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF  
SHORE TO THE US/CANADIAN BORDER-  
401 PM EDT MON MAR 30 2020  
   
LATE THIS AFTERNOON
 
NORTH WINDS 15 TO 25 KNOTS. WAVES 4 TO  
7 FEET OCCASIONALLY TO 9 FEET SUBSIDING TO 3 TO 6 FEET  
OCCASIONALLY TO 8 FEET.    
TONIGHT
 
NORTH WINDS 15 TO 25 KNOTS BECOMING NORTHEAST 10 TO  
20 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF FREEZING DRIZZLE  
AFTER MIDNIGHT. WAVES SUBSIDING TO 2 TO 4 FEET.    
TUESDAY
 
NORTHEAST WINDS 10 TO 20 KNOTS BACKING NORTH LATE. A  
SLIGHT CHANCE OF FREEZING DRIZZLE THROUGH EARLY AFTERNOON. A  
SLIGHT CHANCE OF DRIZZLE. WAVES SUBSIDING TO CALM TO 2 FEET.    
TUESDAY NIGHT
 
NORTHEAST WINDS 10 TO 20 KNOTS VEERING EAST  
AFTER MIDNIGHT. WAVES CALM TO 2 FEET.    
WEDNESDAY
 
NORTHEAST WINDS 5 TO 15 KNOTS BACKING NORTH BY MID  
AFTERNOON. WAVES CALM TO 2 FEET.    
WEDNESDAY NIGHT
 
NORTH WINDS 10 TO 20 KNOTS VEERING NORTHEAST  
AFTER MIDNIGHT. WAVES CALM TO 2 FEET.    
THURSDAY
 
EAST WINDS 10 TO 20 KNOTS BACKING NORTHEAST BY MID  
AFTERNOON. WAVES CALM TO 2 FEET.    
THURSDAY NIGHT
 
EAST WINDS 10 TO 20 KNOTS VEERING SOUTHEAST  
AFTER MIDNIGHT. WAVES BUILDING TO 1 TO 3 FEET.    
FRIDAY
 
SOUTHEAST WINDS 10 TO 20 KNOTS INCREASING TO 15 TO  
25 KNOTS. A CHANCE OF RAIN. WAVES BUILDING TO 2 TO 4 FEET, THEN  
SUBSIDING TO 1 TO 3 FEET.    
SATURDAY
 
WEST WINDS 15 TO 25 KNOTS BECOMING NORTHWEST 10 TO  
20 KNOTS. A CHANCE OF RAIN. WAVES 1 TO 3 FEET.  
 

 
 
LSZ261-310415-  
MAFOR 3021/  
SUPERIOR WEST 12200 15110. WAVES 2 FEET OR LESS TONIGHT. WAVES 1  
TO 3 FEET TUESDAY.  
 
SUPERIOR NORTH CENTRAL 12820 12120 14110. WAVES 2 TO 6 FEET  
TONIGHT. WAVES 2 TO 4 FEET TUESDAY.  
 
SUPERIOR SOUTH CENTRAL 11830 11820 12120 13110 11100. WAVES 5 TO  
8 FEET SUBSIDING TO 3 TO 5 FEET TONIGHT. WAVES 2 TO 4 FEET  
TUESDAY.  
 
SUPERIOR EAST 11830 11820 12130 13120 11110. WAVES 4 TO 7 FEET  
SUBSIDING TO 3 TO 6 FEET TONIGHT. WAVES 2 TO 4 FEET TUESDAY.  
 

 
 
JH  
 
EXPERIMENTAL MODERNIZED OPEN LAKE FORECAST IS AVAILABLE ONLINE AT  
WEATHER.GOV/MQT/GLFTABLE  
 
GRAPHICAL MARINE FORECASTS ARE AVAILABLE ONLINE AT:  
WEATHER.GOV/GREATLAKES  
 




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