fzus63 kmqt 121401
glfls 
expires:202606122000;;619894

open lake forecast for lake superior
national weather service marquette mi
1000 am edt fri jun 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... 

troughing progressively weakens to 29.7 inches today through 
saturday afternoon. weak ridging of 29.8 inches returns to lake 
superior on sunday. a 29.7 inch trough moves through the lake sunday 
night before 29.8 inch ridging pushes back in on monday. 




lsz162-122000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1000 am edt fri jun 12 2026 /900 am cdt fri jun 12 2026/

.rest of today...southwest winds 20 to 30 knots. waves 3 to
6 feet occasionally to 8 feet, then subsiding to 3 to 5 feet
occasionally to 7 feet. 
.tonight...southwest winds 10 to 20 knots increasing to 15 to
25 knots after midnight. waves subsiding to 1 to 3 feet, then
building to 2 to 4 feet. 
.saturday...west winds 15 to 25 knots. waves building to 3 to
5 feet occasionally to 7 feet, then subsiding to 1 to 3 feet. 
.saturday night...west winds 10 to 20 knots increasing to 15 to
25 knots after midnight. waves subsiding to calm to 2 feet. 
.sunday...west winds 15 to 25 knots. waves building to 1 to
3 feet. 
.sunday night...west winds 10 to 20 knots. waves subsiding to
calm to 2 feet. 
.monday...west winds 10 to 20 knots diminishing to 5 to 15 knots.
waves building to 1 to 3 feet, then subsiding to calm to 2 feet. 
.tuesday...southwest winds 5 to 15 knots backing northeast. waves
calm to 2 feet. 

$$

fzus63 kmqt 121401
glfls 
expires:202606122000;;619895

open lake forecast for lake superior
national weather service marquette mi
1000 am edt fri jun 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... 

troughing progressively weakens to 29.7 inches today through 
saturday afternoon. weak ridging of 29.8 inches returns to lake 
superior on sunday. a 29.7 inch trough moves through the lake sunday 
night before 29.8 inch ridging pushes back in on monday. 




lsz263-122000-
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 am edt fri jun 12 2026

.rest of today...southwest winds 20 to 30 knots. waves 3 to
6 feet occasionally to 8 feet building to 5 to 8 feet
occasionally to 10 feet, then subsiding to 4 to 7 feet
occasionally to 9 feet. 
.tonight...southwest winds 15 to 25 knots diminishing to 10 to
20 knots after midnight, then increasing to 15 to 25 knots late.
waves subsiding to 2 to 4 feet, then building to 3 to 5 feet
occasionally to 7 feet. 
.saturday...west winds 15 to 25 knots increasing to 20 to
30 knots in the afternoon, then diminishing to 15 to 25 knots
late. waves building to 3 to 6 feet occasionally to 8 feet. 
.saturday night...west winds 10 to 20 knots. waves subsiding to
2 to 4 feet. 
.sunday...west winds 15 to 25 knots. waves building to 3 to
5 feet occasionally to 7 feet. 
.sunday night...west winds 10 to 20 knots. waves subsiding to
1 to 3 feet. 
.monday...west winds 10 to 20 knots becoming southwest 5 to
15 knots. waves building to 2 to 4 feet, then subsiding to calm
to 2 feet. 
.tuesday...southwest winds 5 to 15 knots backing south. waves
calm to 2 feet. 

$$