fzus63 kmqt 100201
glfls 
expires:202608100800;;912185

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt sun aug 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 ridging of 29.9 inches develops over lake superior tonight and 
persists into tuesday. weak troughing of around 29.8 inches moves 
over the lake tuesday night into wednesday before high pressure 
gradually builds over the great lakes from western canada late in 
the week, strengthening to 30.2 inches by friday.




lsz162-100800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1001 pm edt sun aug 9 2026 /901 pm cdt sun aug 9 2026/

.rest of tonight...south winds 5 to 15 knots veering west after
midnight. patchy fog. waves calm to 2 feet. 
.monday...west winds 5 to 15 knots backing southwest in the
afternoon, then becoming south 10 to 20 knots late. waves calm to
2 feet. 
.monday night...south winds 5 to 15 knots backing north after
midnight. a slight chance of thunderstorms through midnight. a
slight chance of showers. waves calm to 2 feet. 
.tuesday...north winds 5 to 15 knots veering south by mid
afternoon. a slight chance of showers through early afternoon.
waves calm to 2 feet. 
.tuesday night...northwest winds 5 to 15 knots. a slight chance
of thunderstorms through midnight. a chance of showers. waves
calm to 2 feet. 
.wednesday...west winds 5 to 15 knots. waves calm to 2 feet. 
.wednesday night...north winds 5 to 15 knots backing northwest
after midnight. waves calm to 2 feet. 
.thursday...north winds 5 to 15 knots. waves calm to 2 feet. 
.friday...east winds 5 to 15 knots backing northeast. waves calm
to 2 feet. 

$$

fzus63 kmqt 100201
glfls 
expires:202608100800;;912186

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt sun aug 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 ridging of 29.9 inches develops over lake superior tonight and 
persists into tuesday. weak troughing of around 29.8 inches moves 
over the lake tuesday night into wednesday before high pressure 
gradually builds over the great lakes from western canada late in 
the week, strengthening to 30.2 inches by friday.




lsz263-100800-
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 pm edt sun aug 9 2026

.rest of tonight...southwest winds 5 to 15 knots becoming west
less than 10 knots after midnight, then increasing to 5 to
15 knots late. patchy dense fog. waves calm to 2 feet. 
.monday...west winds 5 to 15 knots backing southwest in the
afternoon, then increasing to 10 to 20 knots late. patchy fog
through early afternoon. waves calm to 2 feet. 
.monday night...southwest winds 5 to 15 knots veering west after
midnight, then diminishing to less than 10 knots late. a slight
chance of showers after midnight. waves calm to 2 feet. 
.tuesday...north winds less than 10 knots becoming south 5 to
15 knots by mid afternoon. a slight chance of showers through
early afternoon. waves calm to 2 feet. 
.tuesday night...southwest winds 5 to 15 knots becoming west less
than 10 knots after midnight. a chance of showers. waves calm to
2 feet. 
.wednesday...west winds less than 10 knots increasing to 5 to
15 knots by mid afternoon. waves calm to 2 feet. 
.wednesday night...northwest winds 5 to 15 knots. waves calm to
2 feet. 
.thursday...southwest winds 5 to 15 knots veering west. waves
calm to 2 feet. 
.friday...north winds 5 to 15 knots veering south. waves calm to
2 feet. 

$$