fzus63 kmqt 301401
glfls 
expires:202607302000;;335719

open lake forecast for lake superior
national weather service marquette mi
1001 am edt thu jul 30 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 30.0 inch ridging remains over lake superior through this 
morning. then weak troughing of 28.8 to 29.9 inches moves over the 
lake this afternoon through early friday. ridging of 30.0 to 30.1 
inches returns this weekend into early next week.




lsz162-302000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1001 am edt thu jul 30 2026 /901 am cdt thu jul 30 2026/

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

$$

fzus63 kmqt 301401
glfls 
expires:202607302000;;335720

open lake forecast for lake superior
national weather service marquette mi
1001 am edt thu jul 30 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 30.0 inch ridging remains over lake superior through this 
morning. then weak troughing of 28.8 to 29.9 inches moves over the 
lake this afternoon through early friday. ridging of 30.0 to 30.1 
inches returns this weekend into early next week.




lsz263-302000-
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 30 2026

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

$$