fzus63 kmqt 122100
glfls 
expires:202611130900;;713048

open lake forecast for lake superior
national weather service marquette mi
400 pm 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 29.4 inch low over new jersey this evening moves offshore near 
cape cod on friday and then tracks south of newfoundland by saturday 
morning. meanwhile, 30.3 inch high pressure over manitoba and 
northwest ontario tonight slowly shifts east and expands southward 
towards the ozarks on friday. high pressure reaches the upper great 
lakes by saturday and then encompasses much of the eastern conus by 
sunday, strengthening to 30.5 inches over the ohio river valley by 
monday. 





lsz162-130900-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 pm est thu nov 12 2026 /300 pm cst thu nov 12 2026/

.late this afternoon...north winds 15 to 25 knots. a chance of
snow showers. waves 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 by midnight. waves subsiding to calm to 2 feet. 
.saturday...north winds 5 to 15 knots backing west in the
afternoon. waves calm to 2 feet. 
.saturday night...west winds less than 10 knots increasing to
5 to 15 knots after midnight. waves calm to 2 feet. 
.sunday...west winds 5 to 15 knots backing southwest in the
afternoon. waves calm to 2 feet. 
.sunday night...southwest winds 10 to 20 knots increasing to
15 to 25 knots after midnight. waves building to 1 to 3 feet. 
.monday...southwest winds 15 to 25 knots increasing to 20 to
30 knots. waves building to 3 to 6 feet occasionally to 8 feet. 
.tuesday...southwest winds 15 to 25 knots. waves subsiding to
2 to 4 feet, then building to 3 to 5 feet occasionally to 7 feet.

$$

fzus63 kmqt 122100
glfls 
expires:202611130900;;713049

open lake forecast for lake superior
national weather service marquette mi
400 pm 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 29.4 inch low over new jersey this evening moves offshore near 
cape cod on friday and then tracks south of newfoundland by saturday 
morning. meanwhile, 30.3 inch high pressure over manitoba and 
northwest ontario tonight slowly shifts east and expands southward 
towards the ozarks on friday. high pressure reaches the upper great 
lakes by saturday and then encompasses much of the eastern conus by 
sunday, strengthening to 30.5 inches over the ohio river valley by 
monday. 





lsz263-130900-
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-
400 pm est thu nov 12 2026

.late this afternoon...north winds 15 to 25 knots. a chance of
snow showers. waves 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 5 to 15 knots backing northwest in the
afternoon. waves subsiding to calm to 2 feet. 
.saturday night...west winds less than 10 knots. waves calm to
2 feet. 
.sunday...west winds 5 to 15 knots backing southwest in the
afternoon. waves calm to 2 feet. 
.sunday night...southwest winds 10 to 20 knots increasing to
15 to 25 knots after midnight. waves building to 2 to 4 feet. 
.monday...southwest gales to 35 knots diminishing to 20 to
30 knots. waves building to 3 to 6 feet occasionally to 8 feet. 
.tuesday...southwest gales to 35 knots diminishing to 15 to
25 knots. waves subsiding to 3 to 6 feet occasionally to 8 feet. 

$$