fzus63 kmqt 130301
glfls 
expires:202611130900;;725857

open lake forecast for lake superior
national weather service marquette mi
1000 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 moves offshore of new jersey tomorrow and then 
tracks south of newfoundland by saturday morning. meanwhile, 30.3 
inch high pressure over manitoba and northwest ontario slowly shifts 
east and expands southward towards the ozarks tomorrow. 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-
1000 pm est thu nov 12 2026 /900 pm cst thu nov 12 2026/

.rest of tonight...north winds 15 to 25 knots. waves 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 2 to 4 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. 

$$

fzus63 kmqt 130301
glfls 
expires:202611130900;;725858

open lake forecast for lake superior
national weather service marquette mi
1000 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 moves offshore of new jersey tomorrow and then 
tracks south of newfoundland by saturday morning. meanwhile, 30.3 
inch high pressure over manitoba and northwest ontario slowly shifts 
east and expands southward towards the ozarks tomorrow. 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-
1000 pm est thu nov 12 2026

.rest of tonight...north winds 15 to 25 knots increasing to 20 to
30 knots by midnight, then diminishing to 15 to 25 knots late. a
slight chance of snow showers. waves 4 to 8 feet occasionally to
10 feet, then building to 5 to 8 feet occasionally to 10 feet. 
.friday...north winds 15 to 25 knots diminishing to 10 to
20 knots. a slight chance of snow showers. 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 3 to 5 feet
occasionally to 7 feet. 
.monday...southwest gales to 35 knots diminishing to 20 to
30 knots. waves building to 5 to 8 feet occasionally to 10 feet. 
.tuesday...southwest gales to 35 knots diminishing to 15 to
25 knots. waves subsiding to 3 to 6 feet occasionally to 8 feet. 

$$