fzus63 kmqt 270801
glfls 
expires:202608272000;;434347

open lake forecast for lake superior
national weather service marquette mi
400 am edt thu aug 27 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 30.1 inch high pressure over northern manitoba stretches towards 
lake superior today through tonight, eventually becoming centered 
over lake superior at 30.2 inches by friday morning before 
continuing into new england on saturday. saturday night, a low 
pressure over the central to northern plains deepens to 29.6 inches. 
this low approaches the great lakes over the course of early next 
week, with heights over lake superior falling to 29.8 inches by 
monday afternoon.




lsz162-272000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 am edt thu aug 27 2026 /300 am cdt thu aug 27 2026/

.early this morning...northwest winds 10 to 20 knots. waves calm
to 2 feet. 
.today...northwest winds 5 to 15 knots backing southwest in the
afternoon, then backing southeast late. waves calm to 2 feet. 
.tonight...east winds 5 to 15 knots backing north late. waves
calm to 2 feet. 
.friday...northeast winds less than 10 knots becoming east 5 to
15 knots in the afternoon. waves calm to 2 feet. 
.friday night...east winds 5 to 15 knots becoming northeast less
than 10 knots after midnight. a slight chance of showers after
midnight. waves calm to 2 feet. 
.saturday...east winds 5 to 15 knots. a chance of showers. waves
calm to 2 feet. 
.saturday night...east winds 10 to 20 knots becoming northeast
5 to 15 knots after midnight. a chance of showers. waves calm to
2 feet. 
.sunday...northeast winds 15 to 25 knots. a chance of showers.
waves building to 1 to 3 feet. 
.monday...northeast winds 15 to 25 knots becoming north 10 to
20 knots. a chance of showers. waves subsiding to calm to 2 feet.

$$

fzus63 kmqt 270801
glfls 
expires:202608272000;;434348

open lake forecast for lake superior
national weather service marquette mi
400 am edt thu aug 27 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 30.1 inch high pressure over northern manitoba stretches towards 
lake superior today through tonight, eventually becoming centered 
over lake superior at 30.2 inches by friday morning before 
continuing into new england on saturday. saturday night, a low 
pressure over the central to northern plains deepens to 29.6 inches. 
this low approaches the great lakes over the course of early next 
week, with heights over lake superior falling to 29.8 inches by 
monday afternoon.




lsz263-272000-
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 thu aug 27 2026

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

$$