fzus63 kmqt 121501
glfls 
expires:202611122100;;697236

open lake forecast for lake superior
national weather service marquette mi
1001 am est thu nov 12 2026

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 29.5 inch low over delaware this morning deepens to 29.4 inches as 
it moves offshore near cape cod friday morning and then to 
newfoundland by saturday morning. meanwhile, 30.4 inch high pressure 
over northern manitoba gradually weakens to 30.3 inches over 
northwest ontario by friday and expands southward to the ozarks by 
saturday morning. high pressure slowly shifts eastward to the upper 
great lakes at 30.3 inches by saturday and encompasses much of the 
eastern conus while strengthening to 30.5 inches by monday. 





lsz162-122100-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1001 am est thu nov 12 2026 /901 am cst thu nov 12 2026/

.rest of today...north winds 20 to 30 knots diminishing to 10 to
20 knots by late morning, then increasing to 15 to 25 knots by
mid afternoon. waves 3 to 6 feet occasionally to 8 feet subsiding
to 2 to 4 feet. 
.tonight...north winds 15 to 25 knots. a slight chance of snow
showers in the evening. waves building to 3 to 5 feet
occasionally to 7 feet. 
.friday...north winds 15 to 25 knots diminishing to 5 to
15 knots. waves subsiding to 1 to 3 feet. 
.friday night...north winds 5 to 15 knots increasing to 10 to
20 knots after midnight. waves subsiding to calm to 2 feet. 
.saturday...north winds 5 to 15 knots veering northeast in the
afternoon. waves calm to 2 feet. 
.saturday night...east winds 5 to 15 knots veering southwest
after midnight. waves calm to 2 feet. 
.sunday...southwest winds 5 to 15 knots increasing to 10 to
20 knots. waves building to 1 to 3 feet. 
.monday...southwest winds 15 to 25 knots. waves building to 3 to
6 feet occasionally to 8 feet. 

$$

fzus63 kmqt 121501
glfls 
expires:202611122100;;697237

open lake forecast for lake superior
national weather service marquette mi
1001 am est thu nov 12 2026

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 29.5 inch low over delaware this morning deepens to 29.4 inches as 
it moves offshore near cape cod friday morning and then to 
newfoundland by saturday morning. meanwhile, 30.4 inch high pressure 
over northern manitoba gradually weakens to 30.3 inches over 
northwest ontario by friday and expands southward to the ozarks by 
saturday morning. high pressure slowly shifts eastward to the upper 
great lakes at 30.3 inches by saturday and encompasses much of the 
eastern conus while strengthening to 30.5 inches by monday. 





lsz263-122100-
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-
1001 am est thu nov 12 2026

.rest of today...north winds 15 to 25 knots. a chance of rain
showers late in the morning. a chance of snow showers. 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 increasing to 20 to
30 knots by midnight, then diminishing to 15 to 25 knots late. a
chance of snow showers. waves building to 4 to 7 feet
occasionally to 9 feet. 
.friday...north winds 15 to 25 knots diminishing to 10 to
20 knots. a slight chance of snow showers. a slight chance of
rain showers in the afternoon. waves subsiding to 3 to 5 feet
occasionally to 7 feet. 
.friday night...north winds 10 to 20 knots. waves subsiding to
2 to 4 feet. 
.saturday...north winds 10 to 20 knots diminishing to 5 to
15 knots in the afternoon. waves subsiding to calm to 2 feet. 
.saturday night...north winds less than 10 knots backing
northwest after midnight. waves calm to 2 feet. 
.sunday...southwest winds 5 to 15 knots increasing to 10 to
20 knots. waves building to 2 to 4 feet. 
.monday...southwest winds 20 to 30 knots. waves building to 4 to
7 feet occasionally to 9 feet. 

$$