fzus63 kmqt 082001
glfls 
expires:202607090800;;637333

open lake forecast for lake superior
national weather service marquette mi
401 pm edt wed jul 8 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 hudson bay low moves into northern quebec this evening, sending a 
29.9 inch trough over the upper great lakes. weak high pressure to 
30.0 inches then builds over lake superior and northern ontario 
thursday and friday. saturday, the high builds to 30.1 inches as it 
shifts toward southern ontario. the high continues to shift south 
sunday, reaching the lower great lakes at 30.2 inches before 
weakening to 30.1 inches again monday south of the great lakes. 
another strong low of 29.3 inches looks to cross into hudson bay 
early next week.




lsz162-090800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 pm edt wed jul 8 2026 /301 pm cdt wed jul 8 2026/

...dense fog advisory in effect until 8 am edt /7 am cdt/
thursday...

.late this afternoon...north winds 5 to 15 knots. patchy fog.
waves calm to 2 feet. 
.tonight...north winds 5 to 15 knots diminishing to less than
10 knots after midnight. patchy dense fog. waves calm to 2 feet. 
.thursday...north winds less than 10 knots. patchy dense fog
through early afternoon. waves calm to 2 feet. 
.thursday night...north winds less than 10 knots. waves calm to
2 feet. 
.friday...east winds less than 10 knots increasing to 5 to
15 knots by mid afternoon. waves calm to 2 feet. 
.friday night...northeast winds less than 10 knots backing north
after midnight. waves calm to 2 feet. 
.saturday...south winds less than 10 knots becoming north 5 to
15 knots by mid afternoon. waves calm to 2 feet. 
.saturday night...north winds 5 to 15 knots backing southwest
after midnight. waves calm to 2 feet. 
.sunday...southwest winds 10 to 20 knots. waves building to 1 to
3 feet, then subsiding to calm to 2 feet. 
.monday...southwest winds 15 to 25 knots increasing to 20 to
30 knots. waves building to 3 to 5 feet occasionally to 7 feet,
then subsiding to 2 to 4 feet. 

$$

fzus63 kmqt 082001
glfls 
expires:202607090800;;637334

open lake forecast for lake superior
national weather service marquette mi
401 pm edt wed jul 8 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 hudson bay low moves into northern quebec this evening, sending a 
29.9 inch trough over the upper great lakes. weak high pressure to 
30.0 inches then builds over lake superior and northern ontario 
thursday and friday. saturday, the high builds to 30.1 inches as it 
shifts toward southern ontario. the high continues to shift south 
sunday, reaching the lower great lakes at 30.2 inches before 
weakening to 30.1 inches again monday south of the great lakes. 
another strong low of 29.3 inches looks to cross into hudson bay 
early next week.




lsz263-090800-
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-
401 pm edt wed jul 8 2026

...dense fog advisory in effect until 8 am edt thursday...

.late this afternoon...southwest winds 5 to 15 knots. patchy fog.
waves calm to 2 feet. 
.tonight...west winds 5 to 15 knots diminishing to less than
10 knots after midnight. patchy dense fog. waves calm to 2 feet. 
.thursday...west winds less than 10 knots backing southwest in
the afternoon, then increasing to 5 to 15 knots late. patchy fog.
waves calm to 2 feet. 
.thursday night...southwest winds less than 10 knots backing
southeast after midnight, then backing east late. waves calm to
2 feet. 
.friday...east winds less than 10 knots. waves calm to 2 feet. 
.friday night...east winds 5 to 15 knots veering south after
midnight. waves calm to 2 feet. 
.saturday...southwest winds less than 10 knots becoming south
5 to 15 knots by mid afternoon. waves calm to 2 feet. 
.saturday night...southwest winds 5 to 15 knots. waves calm to
2 feet. 
.sunday...southwest winds 10 to 20 knots. waves building to 2 to
4 feet, then subsiding 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. 

$$