fzus63 kmqt 091401
glfls 
expires:202607092000;;677990

open lake forecast for lake superior
national weather service marquette mi
1001 am edt thu jul 9 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... 

weak troughing of 29.9 inches over lake superior today will give way 
to weak high pressure of 30.0 inches building over hudson bay and 
northern ontario tonight and friday. high pressure continues to 
build to 30.1 to 30.2 inches over the lake this weekend as the high 
shifts south to the lower great lakes through sunday. a strong low 
of around 29.3 inches looks to cross into hudson bay early next week.




lsz162-092000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1001 am edt thu jul 9 2026 /901 am cdt thu jul 9 2026/

...dense fog advisory in effect until 11 am edt /10 am cdt/ this
morning...

.rest of today...northeast winds 5 to 15 knots veering east in
the afternoon, then backing northeast late. patchy dense fog by
mid afternoon. waves calm to 2 feet. 
.tonight...northeast winds 5 to 15 knots veering east late.
patchy dense fog after midnight. waves calm to 2 feet. 
.friday...north winds less than 10 knots becoming east 5 to
15 knots in the afternoon, then backing northeast late. a slight
chance of showers by mid afternoon. waves calm to 2 feet. 
.friday night...northeast winds 5 to 15 knots diminishing to less
than 10 knots after midnight. a slight chance of showers and
thunderstorms. waves calm to 2 feet. 
.saturday...east winds less than 10 knots becoming north 5 to
15 knots by mid afternoon. waves calm to 2 feet. 
.saturday night...northeast winds less than 10 knots backing
north after midnight. waves calm to 2 feet. 
.sunday...southwest winds 5 to 15 knots increasing to 10 to
20 knots. waves building to 1 to 3 feet. 
.monday...southwest winds 15 to 25 knots. waves building to 3 to
5 feet occasionally to 7 feet, then subsiding to 2 to 4 feet. 

$$

fzus63 kmqt 091401
glfls 
expires:202607092000;;677991

open lake forecast for lake superior
national weather service marquette mi
1001 am edt thu jul 9 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... 

weak troughing of 29.9 inches over lake superior today will give way 
to weak high pressure of 30.0 inches building over hudson bay and 
northern ontario tonight and friday. high pressure continues to 
build to 30.1 to 30.2 inches over the lake this weekend as the high 
shifts south to the lower great lakes through sunday. a strong low 
of around 29.3 inches looks to cross into hudson bay early next week.




lsz263-092000-
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-
1001 am edt thu jul 9 2026

...dense fog advisory in effect until 11 am edt this morning...

.rest of today...north winds less than 10 knots veering northeast
in the afternoon. waves calm to 2 feet. 
.tonight...northeast winds less than 10 knots backing west after
midnight, then backing east late. patchy dense fog. waves calm to
2 feet. 
.friday...east winds less than 10 knots backing northeast in the
afternoon, then becoming east 5 to 15 knots late. waves calm to
2 feet. 
.friday night...east winds 5 to 15 knots backing northeast after
midnight. a slight chance of showers and thunderstorms. waves
calm to 2 feet. 
.saturday...south winds less than 10 knots backing east by mid
afternoon. waves calm to 2 feet. 
.saturday night...east winds less than 10 knots becoming
southwest 5 to 15 knots after midnight. waves calm to 2 feet. 
.sunday...southwest winds 10 to 20 knots. waves building to 2 to
4 feet. 
.monday...southwest winds 20 to 30 knots. waves building to 3 to
6 feet occasionally to 8 feet. 

$$