fzus63 kmqt 091401
glfls 
expires:202608092000;;883770

open lake forecast for lake superior
national weather service marquette mi
1001 am 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...

a 29.9 inch trough moves over the lake today into tonight. then, 
weak ridging of 29.9 inches returns on monday and holds through 
tuesday. another weak trough at 29.8 inches moves over the lake 
tuesday night into wednesday before high pressure gradually builds 
over the great lakes from western canada through friday to 30.1 
inches.




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

.rest of today...west winds 5 to 15 knots backing southwest in
the afternoon. patchy fog. waves calm to 2 feet. 
.tonight...southwest 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. waves calm to 2 feet. 
.monday night...west winds 5 to 15 knots becoming north less than
10 knots after midnight. waves calm to 2 feet. 
.tuesday...north winds less than 10 knots becoming south 5 to
15 knots by mid afternoon. waves calm to 2 feet. 
.tuesday night...west winds 5 to 15 knots veering northwest after
midnight. a chance of showers. waves calm to 2 feet. 
.wednesday...west winds 5 to 15 knots veering northwest. waves
calm to 2 feet. 
.thursday...southwest winds 5 to 15 knots veering north. waves
calm to 2 feet. 

$$

fzus63 kmqt 091401
glfls 
expires:202608092000;;883771

open lake forecast for lake superior
national weather service marquette mi
1001 am 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...

a 29.9 inch trough moves over the lake today into tonight. then, 
weak ridging of 29.9 inches returns on monday and holds through 
tuesday. another weak trough at 29.8 inches moves over the lake 
tuesday night into wednesday before high pressure gradually builds 
over the great lakes from western canada through friday to 30.1 
inches.




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 sun aug 9 2026

.rest of today...west winds less than 10 knots increasing to 5 to
15 knots in the afternoon, then backing southwest late. patchy
fog. waves calm to 2 feet. 
.tonight...southwest winds 5 to 15 knots diminishing to less than
10 knots after midnight. patchy 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. waves calm to 2 feet. 
.tuesday...north winds less than 10 knots becoming south 5 to
15 knots by mid afternoon. waves calm to 2 feet. 
.tuesday night...southwest winds 5 to 15 knots becoming west less
than 10 knots after midnight. waves calm to 2 feet. 
.wednesday...west winds 5 to 15 knots veering northwest. waves
calm to 2 feet. 
.thursday...northwest winds 5 to 15 knots. waves calm to 2 feet. 

$$