fzus63 kmqt 260801
glfls 
expires:202608262000;;378822

open lake forecast for lake superior
national weather service marquette mi
400 am edt wed aug 26 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 29.7 inch clipper over lake superior today lifts into james bay by 
this evening. by thursday morning, a 30.2 inch high pressure over 
manitoba starts stretching towards lake superior. this high moves 
over the lake by friday morning before continuing into new england 
on saturday. on saturday night, a low pressure over the central to 
northern plains deepens to 29.6 inches. this low approaches the 
great lakes by early next week.




lsz162-262000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 am edt wed aug 26 2026 /300 am cdt wed aug 26 2026/

.early this morning...west winds 10 to 20 knots. a chance of
showers. waves calm to 2 feet. 
.today...west winds 10 to 20 knots increasing to 15 to 25 knots
in the afternoon, then diminishing to 10 to 20 knots late. a
slight chance of showers. waves calm to 2 feet. 
.tonight...northwest winds 10 to 20 knots. waves calm to 2 feet. 
.thursday...northwest winds 5 to 15 knots backing southwest in
the afternoon, then backing south late. waves calm to 2 feet. 
.thursday night...northeast winds 5 to 15 knots. waves calm to
2 feet. 
.friday...east winds less than 10 knots increasing to 5 to
15 knots by mid afternoon. waves calm to 2 feet. 
.friday night...east winds 5 to 15 knots backing northeast after
midnight. waves calm to 2 feet. 
.saturday...east winds 5 to 15 knots. a chance of showers. waves
calm to 2 feet. 
.sunday...east winds 10 to 20 knots backing northeast. a chance
of showers. waves building to 1 to 3 feet. 

$$

fzus63 kmqt 260801
glfls 
expires:202608262000;;378823

open lake forecast for lake superior
national weather service marquette mi
400 am edt wed aug 26 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 29.7 inch clipper over lake superior today lifts into james bay by 
this evening. by thursday morning, a 30.2 inch high pressure over 
manitoba starts stretching towards lake superior. this high moves 
over the lake by friday morning before continuing into new england 
on saturday. on saturday night, a low pressure over the central to 
northern plains deepens to 29.6 inches. this low approaches the 
great lakes by early next week.




lsz263-262000-
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-
400 am edt wed aug 26 2026

.early this morning...west winds 10 to 20 knots. a chance of
showers. waves calm to 2 feet building to 1 to 3 feet. 
.today...west winds 15 to 25 knots. a chance of showers. waves
building to 2 to 4 feet, then subsiding to 1 to 3 feet. 
.tonight...northwest winds 10 to 20 knots diminishing to 5 to
15 knots after midnight, then veering north late. a chance of
showers through midnight. waves subsiding to calm to 2 feet. 
.thursday...north winds 5 to 15 knots veering south late. a
slight chance of showers by mid afternoon. waves calm to 2 feet. 
.thursday night...northeast winds less than 10 knots veering east
after midnight. waves calm to 2 feet. 
.friday...southwest winds less than 10 knots becoming south 5 to
15 knots by mid afternoon. waves calm to 2 feet. 
.friday night...southeast winds 5 to 15 knots veering south after
midnight. waves calm to 2 feet. 
.saturday...south winds 5 to 15 knots. a chance of showers. waves
calm to 2 feet. 
.sunday...south winds 5 to 15 knots increasing to 10 to 20 knots.
a chance of showers. waves building to 1 to 3 feet. 

$$