fzus63 kmqt 122001
glfls 
expires:202606130800;;635363

open lake forecast for lake superior
national weather service marquette mi
400 pm 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 over lake superior 
tonight through saturday midday, and further to 29.8 early sunday. a 
29.7 inch trough moves through the lake sunday night before 29.8 
inch ridging pushes back in on monday. troughing to 29.7 inches 
occurs again on monday before deepening beginning tuesday morning, 
reaching 29.6 inches by late tuesday and remaining in place through 
wednesday.




lsz162-130800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 pm edt fri jun 12 2026 /300 pm cdt fri jun 12 2026/

.late this afternoon...southwest winds 20 to 30 knots. waves 3 to
6 feet occasionally to 8 feet. 
.tonight...southwest winds 15 to 25 knots. waves subsiding to
1 to 3 feet, then building to 2 to 4 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 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 late. waves subsiding to calm to 2 feet, then building
to 1 to 3 feet. 
.sunday...west winds 15 to 25 knots. waves subsiding to calm to
2 feet, then 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 backing southwest by mid
afternoon. waves building to 1 to 3 feet, then subsiding to calm
to 2 feet. 
.monday night...southwest winds 5 to 15 knots veering west after
midnight. waves calm to 2 feet. 
.tuesday...west winds 5 to 15 knots. waves calm to 2 feet. 
.wednesday...east winds 5 to 15 knots becoming north 10 to
20 knots. a chance of rain showers. waves calm to 2 feet. 

$$

fzus63 kmqt 122001
glfls 
expires:202606130800;;635364

open lake forecast for lake superior
national weather service marquette mi
400 pm 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 over lake superior 
tonight through saturday midday, and further to 29.8 early sunday. a 
29.7 inch trough moves through the lake sunday night before 29.8 
inch ridging pushes back in on monday. troughing to 29.7 inches 
occurs again on monday before deepening beginning tuesday morning, 
reaching 29.6 inches by late tuesday and remaining in place through 
wednesday.




lsz263-130800-
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 edt fri jun 12 2026

.late this afternoon...southwest winds 15 to 25 knots. a slight
chance of showers. waves 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.
a slight chance of showers through midnight. 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, then subsiding to 2 to 4 feet. 
.sunday night...west winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. waves subsiding to calm to 2 feet. 
.monday...west winds 10 to 20 knots backing southwest by mid
afternoon. waves building to 2 to 4 feet, then subsiding to 1 to
3 feet. 
.monday night...southwest winds 5 to 15 knots. waves subsiding to
calm to 2 feet. 
.tuesday...west winds 5 to 15 knots. waves calm to 2 feet. 
.wednesday...west winds 5 to 15 knots becoming north 10 to
20 knots. a chance of rain showers. waves calm to 2 feet. 

$$