Marine Weather Forecast from Environment Canada

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

  
706   
FZUS63 KMQT 261358  
GLFLS   
  
OPEN LAKE FORECAST FOR LAKE SUPERIOR  
NATIONAL WEATHER SERVICE MARQUETTE MI  
958 AM EDT FRI APR 26 2024  
  
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  
BROAD HIGH PRESSURE OF 30.5 INCHES OVER QUEBEC AND NEW  
ENGLAND SHIFTS EAST INTO THE MARITIME PROVINCES TODAY. MEANWHILE,  
A 29.3 INCH LOW PRESSURE OVER SOUTH CENTRAL NEBRASKA KANSAS WILL   
DEEPEN TO 29.2 INCHES TODAY AS IT LIFTS TO NORTHEASTERN NEBRASKA.  
THIS LOW WILL CONTINUE TO TRACK NORTHEAST, WEAKENING TO 29.6   
INCHES BY THE TIME IT REACHES NORTHEAST LAKE SUPERIOR ON SATURDAY   
EVENING. ON SUNDAY, 30.5 INCH HIGH PRESSURE WILL BUILD OVER   
NORTHERN ONTARIO AS A 29.6 INCH LOW PRESSURE LIFTS NORTHEAST   
ACROSS THE CENTRAL PLAINS. THIS LOW WILL CONTINUE TO TRACK   
NORTHEAST, CROSSING WESTERN LAKE SUPERIOR LATE IN THE DAY MONDAY.   
AS THE LOW MOVES OVER NORTHERN ONTARIO MONDAY NIGHT, A WEAK 30.0   
INCH RIDGE WILL SHIFT EAST ACROSS THE MISSISSIPPI VALLEY. ON   
TUESDAY, THE RIDGE WILL SHIFT TOWARD THE APPALACHIANS AS THE NEXT   
LOW PRESSURE OF 29.7 INCHES TRACKS FROM NORTH DAKOTA TO FAR   
NORTHERN MINNESOTA.  
  
LSZ162-262200-  
LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND  
PORTAGE MN BEYOND 5NM-  
958 AM EDT FRI APR 26 2024 /858 AM CDT FRI APR 26 2024/  
  
...GALE WATCH IN EFFECT FROM SUNDAY MORNING THROUGH MONDAY  
MORNING...  
   
REST OF TODAY  
SOUTHEAST WINDS 10 TO 20 KNOTS BACKING EAST IN  
THE AFTERNOON, THEN INCREASING TO 15 TO 25 KNOTS LATE. A CHANCE   
OF RAIN SHOWERS BY MID AFTERNOON. WAVES 1 TO 3 FEET BUILDING TO 2   
TO 4 FEET.    
TONIGHT  
EAST WINDS 10 TO 20 KNOTS INCREASING TO 20 TO 30 KNOTS  
AFTER MIDNIGHT, THEN BACKING NORTHEAST LATE. RAIN SHOWERS AND A  
SLIGHT CHANCE OF THUNDERSTORMS. WAVES BUILDING TO 3 TO 6 FEET  
OCCASIONALLY TO 8 FEET.    
SATURDAY  
NORTHEAST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO  
20 KNOTS IN THE AFTERNOON, THEN BACKING NORTHWEST LATE. RAIN  
SHOWERS AND A SLIGHT CHANCE OF THUNDERSTORMS. WAVES SUBSIDING TO  
1 TO 3 FEET.    
SATURDAY NIGHT  
NORTH WINDS 10 TO 20 KNOTS BECOMING NORTHEAST  
15 TO 25 KNOTS AFTER MIDNIGHT. A SLIGHT CHANCE OF THUNDERSTORMS  
THROUGH MIDNIGHT. A CHANCE OF RAIN SHOWERS. WAVES BUILDING TO  
3 TO 5 FEET OCCASIONALLY TO 7 FEET.    
SUNDAY  
NORTHEAST GALES TO 40 KNOTS. A CHANCE OF RAIN SHOWERS  
THROUGH EARLY AFTERNOON, THEN RAIN SHOWERS LIKELY BY MID  
AFTERNOON. WAVES BUILDING TO 10 TO 14 FEET OCCASIONALLY TO  
18 FEET.    
SUNDAY NIGHT  
NORTHEAST GALES TO 45 KNOTS. RAIN SHOWERS. WAVES  
SUBSIDING TO 8 TO 11 FEET OCCASIONALLY TO 14 FEET.    
MONDAY  
NORTHEAST WINDS 20 TO 30 KNOTS BECOMING WEST 15 TO  
25 KNOTS. RAIN SHOWERS. WAVES SUBSIDING TO 1 TO 3 FEET.    
TUESDAY  
SOUTHWEST WINDS 10 TO 20 KNOTS BECOMING WEST 15 TO  
25 KNOTS. A CHANCE OF RAIN SHOWERS. WAVES SUBSIDING TO CALM TO  
2 FEET, THEN BUILDING TO 1 TO 3 FEET.   
  
  
  
LSZ263-262200-  
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-  
958 AM EDT FRI APR 26 2024  
  
...GALE WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH MONDAY  
MORNING...  
   
REST OF TODAY  
SOUTHEAST WINDS 10 TO 20 KNOTS BECOMING EAST  
15 TO 25 KNOTS IN THE AFTERNOON, THEN VEERING SOUTHEAST LATE.   
WAVES 1 TO 3 FEET BUILDING TO 4 TO 7 FEET OCCASIONALLY TO 9 FEET.    
TONIGHT  
SOUTHEAST WINDS 15 TO 25 KNOTS BACKING EAST AFTER  
MIDNIGHT, THEN DIMINISHING TO 10 TO 20 KNOTS LATE. RAIN SHOWERS  
LIKELY AND A SLIGHT CHANCE OF THUNDERSTORMS. WAVES SUBSIDING TO  
3 TO 6 FEET OCCASIONALLY TO 8 FEET, THEN BUILDING TO 5 TO 8 FEET  
OCCASIONALLY TO 10 FEET.    
SATURDAY  
EAST WINDS 10 TO 20 KNOTS BACKING NORTHEAST IN THE  
AFTERNOON, THEN BACKING NORTHWEST LATE. RAIN SHOWERS LIKELY  
THROUGH EARLY AFTERNOON. A SLIGHT CHANCE OF THUNDERSTORMS. A  
CHANCE OF RAIN SHOWERS BY MID AFTERNOON. WAVES SUBSIDING TO 2 TO  
4 FEET.    
SATURDAY NIGHT  
NORTH WINDS 15 TO 25 KNOTS VEERING NORTHEAST  
AFTER MIDNIGHT. A SLIGHT CHANCE OF THUNDERSTORMS THROUGH  
MIDNIGHT. A SLIGHT CHANCE OF RAIN SHOWERS. WAVES BUILDING TO 3 TO  
6 FEET OCCASIONALLY TO 8 FEET.    
SUNDAY  
NORTHEAST WINDS 20 TO 30 KNOTS INCREASING TO GALES TO  
35 KNOTS BY MID AFTERNOON. RAIN SHOWERS LIKELY BY MID AFTERNOON.  
WAVES BUILDING TO 7 TO 11 FEET OCCASIONALLY TO 14 FEET.    
SUNDAY NIGHT  
EAST GALES TO 35 KNOTS. RAIN SHOWERS. WAVES  
SUBSIDING TO 6 TO 9 FEET OCCASIONALLY TO 11 FEET, THEN BUILDING  
TO 7 TO 10 FEET OCCASIONALLY TO 13 FEET.    
MONDAY  
EAST WINDS 20 TO 30 KNOTS BECOMING WEST 15 TO 25 KNOTS.  
RAIN SHOWERS. WAVES SUBSIDING TO 2 TO 4 FEET.    
TUESDAY  
SOUTHWEST WINDS 10 TO 20 KNOTS VEERING WEST. A CHANCE  
OF RAIN SHOWERS. WAVES SUBSIDING TO CALM TO 2 FEET, THEN BUILDING  
TO 2 TO 4 FEET.   
  
  
  
LSZ264-262200-  
LAKE SUPERIOR FROM UPPER ENTRANCE TO PORTAGE CANAL TO MANITOU  
ISLAND MI 5NM OFF SHORE TO THE US/CANADIAN BORDER-  
958 AM EDT FRI APR 26 2024  
  
...GALE WATCH IN EFFECT FROM SUNDAY EVENING THROUGH MONDAY  
MORNING...  
   
REST OF TODAY  
SOUTHEAST WINDS 10 TO 20 KNOTS INCREASING TO  
20 TO 30 KNOTS. WAVES 3 TO 5 FEET OCCASIONALLY TO 7 FEET BUILDING  
TO 4 TO 7 FEET OCCASIONALLY TO 9 FEET.    
TONIGHT  
SOUTHEAST WINDS 20 TO 30 KNOTS. RAIN SHOWERS. A SLIGHT  
CHANCE OF THUNDERSTORMS AFTER MIDNIGHT. WAVES BUILDING TO 6 TO  
9 FEET OCCASIONALLY TO 11 FEET.    
SATURDAY  
SOUTHEAST WINDS 15 TO 25 KNOTS DIMINISHING TO 10 TO  
20 KNOTS IN THE AFTERNOON, THEN BACKING NORTH LATE. RAIN SHOWERS  
LIKELY AND A SLIGHT CHANCE OF THUNDERSTORMS. WAVES SUBSIDING TO  
3 TO 5 FEET OCCASIONALLY TO 7 FEET.    
SATURDAY NIGHT  
NORTH WINDS 15 TO 25 KNOTS INCREASING TO 20 TO  
30 KNOTS AFTER MIDNIGHT. A CHANCE OF RAIN SHOWERS AND A SLIGHT  
CHANCE OF THUNDERSTORMS THROUGH MIDNIGHT. WAVES BUILDING TO 3 TO  
6 FEET OCCASIONALLY TO 8 FEET.    
SUNDAY  
NORTHEAST WINDS 20 TO 30 KNOTS VEERING EAST BY MID  
AFTERNOON. A CHANCE OF RAIN SHOWERS. WAVES SUBSIDING TO 3 TO  
5 FEET OCCASIONALLY TO 7 FEET.    
SUNDAY NIGHT  
EAST GALES TO 35 KNOTS. RAIN SHOWERS. WAVES  
BUILDING TO 7 TO 10 FEET OCCASIONALLY TO 13 FEET.    
MONDAY  
EAST GALES TO 35 KNOTS BECOMING WEST 15 TO 25 KNOTS.  
RAIN SHOWERS. WAVES SUBSIDING TO 2 TO 4 FEET.    
TUESDAY  
SOUTHWEST WINDS 10 TO 20 KNOTS BACKING SOUTH. A CHANCE  
OF RAIN SHOWERS. WAVES SUBSIDING TO CALM TO 2 FEET, THEN BUILDING  
TO 1 TO 3 FEET.   
  
  
  
LSZ265-262200-  
LAKE SUPERIOR WEST OF LINE FROM MANITOU ISLAND TO MARQUETTE MI  
BEYOND 5NM FROM SHORE-  
958 AM EDT FRI APR 26 2024  
  
...GALE WATCH IN EFFECT FROM SUNDAY EVENING THROUGH MONDAY  
MORNING...  
   
REST OF TODAY  
SOUTHEAST WINDS 10 TO 20 KNOTS INCREASING TO  
20 TO 30 KNOTS. WAVES 2 TO 4 FEET BUILDING TO 3 TO 6 FEET  
OCCASIONALLY TO 8 FEET.   
TONIGHT  
SOUTHEAST WINDS 20 TO 30 KNOTS DIMINISHING TO 15 TO  
25 KNOTS LATE. A CHANCE OF RAIN SHOWERS. A SLIGHT CHANCE OF  
THUNDERSTORMS AFTER MIDNIGHT. WAVES BUILDING TO 4 TO 7 FEET  
OCCASIONALLY TO 9 FEET, THEN SUBSIDING TO 3 TO 6 FEET  
OCCASIONALLY TO 8 FEET.    
SATURDAY  
SOUTHEAST WINDS 10 TO 20 KNOTS VEERING SOUTHWEST  
LATE. A CHANCE OF SHOWERS AND THUNDERSTORMS. WAVES SUBSIDING TO  
2 TO 4 FEET.    
SATURDAY NIGHT  
NORTHWEST WINDS 15 TO 25 KNOTS VEERING NORTH  
AFTER MIDNIGHT. A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS  
THROUGH MIDNIGHT. WAVES SUBSIDING TO 1 TO 3 FEET, THEN BUILDING  
TO 3 TO 5 FEET OCCASIONALLY TO 7 FEET.    
SUNDAY  
NORTHEAST WINDS 15 TO 25 KNOTS VEERING EAST BY MID  
AFTERNOON. RAIN SHOWERS LIKELY BY MID AFTERNOON. WAVES SUBSIDING  
TO 2 TO 4 FEET.    
SUNDAY NIGHT  
EAST GALES TO 35 KNOTS. RAIN SHOWERS. WAVES  
BUILDING TO 5 TO 8 FEET OCCASIONALLY TO 10 FEET.    
MONDAY  
SOUTHEAST WINDS 15 TO 25 KNOTS VEERING WEST. RAIN  
SHOWERS. WAVES SUBSIDING TO CALM TO 2 FEET.    
TUESDAY  
WEST WINDS 15 TO 25 KNOTS BACKING SOUTHWEST. A CHANCE  
OF RAIN SHOWERS. WAVES BUILDING TO 1 TO 3 FEET.   
  
  
  
LSZ266-262200-  
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-  
958 AM EDT FRI APR 26 2024  
  
...GALE WATCH IN EFFECT FROM SUNDAY EVENING THROUGH MONDAY  
MORNING...  
   
REST OF TODAY  
SOUTHEAST WINDS 15 TO 25 KNOTS INCREASING TO  
20 TO 30 KNOTS LATE. WAVES 3 TO 5 FEET OCCASIONALLY TO 7 FEET  
BUILDING TO 4 TO 7 FEET OCCASIONALLY TO 9 FEET.    
TONIGHT  
SOUTHEAST WINDS 20 TO 30 KNOTS. A CHANCE OF RAIN  
SHOWERS THROUGH MIDNIGHT, THEN RAIN SHOWERS LIKELY AND A SLIGHT  
CHANCE OF THUNDERSTORMS AFTER MIDNIGHT. WAVES BUILDING TO 6 TO  
9 FEET OCCASIONALLY TO 11 FEET.    
SATURDAY  
SOUTHEAST WINDS 20 TO 30 KNOTS BECOMING SOUTH 15 TO  
25 KNOTS IN THE AFTERNOON. A CHANCE OF SHOWERS AND THUNDERSTORMS.  
WAVES SUBSIDING TO 3 TO 5 FEET OCCASIONALLY TO 7 FEET.    
SATURDAY NIGHT  
NORTHWEST WINDS 15 TO 25 KNOTS VEERING NORTH  
AFTER MIDNIGHT. A CHANCE OF RAIN SHOWERS AND A SLIGHT CHANCE OF  
THUNDERSTORMS THROUGH MIDNIGHT. WAVES BUILDING TO 3 TO 6 FEET  
OCCASIONALLY TO 8 FEET.    
SUNDAY  
NORTHEAST WINDS 15 TO 25 KNOTS. RAIN SHOWERS LIKELY BY  
MID AFTERNOON. WAVES SUBSIDING TO 2 TO 4 FEET, THEN BUILDING TO  
3 TO 5 FEET OCCASIONALLY TO 7 FEET.    
SUNDAY NIGHT  
EAST GALES TO 35 KNOTS. RAIN SHOWERS. WAVES  
BUILDING TO 6 TO 9 FEET OCCASIONALLY TO 11 FEET.    
MONDAY  
SOUTHEAST GALES TO 35 KNOTS BECOMING WEST 15 TO  
25 KNOTS. RAIN SHOWERS. A CHANCE OF RAIN SHOWERS. WAVES SUBSIDING  
TO 2 TO 4 FEET.    
TUESDAY  
SOUTHWEST WINDS 10 TO 20 KNOTS BECOMING SOUTH 15 TO  
25 KNOTS. A CHANCE OF RAIN SHOWERS. WAVES SUBSIDING TO CALM TO  
2 FEET, THEN BUILDING TO 1 TO 3 FEET.   
  
  
  
LSZ267-262200-  
LAKE SUPERIOR FROM GRAND MARAIS MI TO WHITEFISH POINT MI 5NM OFF  
SHORE TO THE US/CANADIAN BORDER-  
958 AM EDT FRI APR 26 2024  
   
REST OF TODAY  
SOUTHEAST WINDS 15 TO 25 KNOTS INCREASING TO  
20 TO 30 KNOTS LATE. WAVES 2 TO 4 FEET BUILDING TO 4 TO 7 FEET  
OCCASIONALLY TO 9 FEET.    
TONIGHT  
SOUTHEAST WINDS TO 30 KNOTS WITH A FEW GALE FORCE  
GUSTS TO 35 KNOTS POSSIBLE. A CHANCE OF RAIN SHOWERS THROUGH   
MIDNIGHT, THEN RAIN SHOWERS LIKELY AFTER MIDNIGHT. WAVES BUILDING   
TO 5 TO 8 FEET OCCASIONALLY TO 10 FEET, THEN SUBSIDING TO 3 TO 6   
FEET OCCASIONALLY TO 8 FEET.   
SATURDAY  
SOUTHEAST WINDS TO 30 KNOTS WITH A FEW GALE FORCE  
GUSTS TO 35 KNOTS POSSIBLE BECOMING SOUTH 20 TO 30 KNOTS IN THE  
AFTERNOON, THEN DIMINISHING TO 15 TO 25 KNOTS LATE. A CHANCE OF  
SHOWERS AND THUNDERSTORMS. WAVES SUBSIDING TO 3 TO 5 FEET  
OCCASIONALLY TO 7 FEET.    
SATURDAY NIGHT  
WEST WINDS 15 TO 25 KNOTS BECOMING NORTH 10 TO  
20 KNOTS AFTER MIDNIGHT. A CHANCE OF SHOWERS AND THUNDERSTORMS.  
WAVES SUBSIDING TO 2 TO 4 FEET, THEN BUILDING TO 3 TO 5 FEET  
OCCASIONALLY TO 7 FEET.    
SUNDAY  
NORTHEAST WINDS 15 TO 25 KNOTS. A CHANCE OF RAIN  
SHOWERS. WAVES SUBSIDING TO 2 TO 4 FEET.    
SUNDAY NIGHT  
EAST WINDS 20 TO 30 KNOTS. RAIN SHOWERS. WAVES   
BUILDING TO 4 TO 7 FEET OCCASIONALLY TO 9 FEET.    
MONDAY  
SOUTHEAST WINDS 20 TO 30 KNOTS BECOMING SOUTHWEST 10 TO  
20 KNOTS. RAIN SHOWERS. WAVES SUBSIDING TO CALM TO 2 FEET.    
TUESDAY  
WEST WINDS 10 TO 20 KNOTS BECOMING SOUTH 15 TO  
25 KNOTS. A CHANCE OF RAIN SHOWERS. WAVES BUILDING TO 1 TO  
3 FEET, THEN SUBSIDING TO CALM TO 2 FEET.   
  
  
LSZ261-262200-  
MAFOR 2615/  
SUPERIOR WEST 11210 12220 14236 11236. WAVES 1 TO 3 FEET THIS  
AFTERNOON BUILDING TO 3 TO 6 FEET TONIGHT AND SATURDAY MORNING.  
  
SUPERIOR NORTH CENTRAL 11330 13340 13346 11336. WAVES 3 TO 7 FEET  
THROUGH THIS AFTERNOON. WAVES 5 TO 9 FEET TONIGHT AND SATURDAY   
MORNING.   
  
SUPERIOR SOUTH CENTRAL 11330 12340 11330 11336 11346 11330 11320.  
WAVES 2 TO 5 FEET THROUGH THIS AFTERNOON BUILDING TO 3 TO 7 FEET    
TONIGHT AND SATURDAY MORNING.  
  
SUPERIOR EAST 11320 11330 11340 11340 11330 11346 11346 11340.   
WAVES 2 TO 4 FEET BUILDING TO 3 TO 6 FEET THIS AFTERNOON. WAVES 5   
TO 9 FEET TONIGHT AND SATURDAY MORNING.   
  
  
  
JABLONSKI  
  
EXPERIMENTAL MODERNIZED OPEN LAKE FORECAST IS AVAILABLE ONLINE AT  
WEATHER.GOV/MQT/GLFTABLE  
  
GRAPHICAL MARINE FORECASTS ARE AVAILABLE ONLINE AT:  
WEATHER.GOV/GREATLAKES