fzus63 kmqt 092002
glfls 
expires:202608100800;;898500

open lake forecast for lake superior
national weather service marquette mi
402 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...

a 29.9 inch trough moves over the lake through 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.




lsz162-100800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
402 pm edt sun aug 9 2026 /302 pm cdt sun aug 9 2026/

.late this afternoon...east winds 5 to 15 knots. waves calm to
2 feet. 
.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 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 092002
glfls 
expires:202608100800;;898501

open lake forecast for lake superior
national weather service marquette mi
402 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...

a 29.9 inch trough moves over the lake through 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.




lsz263-100800-
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-
402 pm edt sun aug 9 2026

.late this afternoon...east winds 5 to 15 knots. waves calm to
2 feet. 
.tonight...east winds 5 to 15 knots becoming west less than
10 knots after midnight, then increasing to 5 to 15 knots late.
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, 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. 

$$