fzus63 kmqt 100801
glfls 
expires:202608102000;;927509

open lake forecast for lake superior
national weather service marquette mi
401 am edt mon aug 10 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 29.9 inch ridge builds over the lake today and persists through 
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.




lsz263-102000-
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-
401 am edt mon aug 10 2026

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

$$

fzus63 kmqt 100801
glfls 
expires:202608102000;;927508

open lake forecast for lake superior
national weather service marquette mi
401 am edt mon aug 10 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 29.9 inch ridge builds over the lake today and persists through 
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.




lsz162-102000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 am edt mon aug 10 2026 /301 am cdt mon aug 10 2026/

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

$$