fzus63 kmqt 292101
glfls 
expires:202601300900;;755557

open lake forecast for lake superior
national weather service marquette mi
400 pm est thu jan 29 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, remnant 30.3 inch troughing over eastern lake superior this 
afternoon continues to weaken through tonight as 30.5 inch high 
pressure over manitoba and the dakotas strengthens to 30.9 inches by 
friday morning. this will send 30.6 inch ridging over the lake on 
friday. ridging over the lake will then gradually weaken to 30.3 
inches through the weekend as high pressure shifts southeast into 
the lower mississippi valley at 30.5 inches by sunday. a 29.9 inch 
trough will cross the lake sunday night, followed by another 30.5 
inch high moving over the lake by tuesday morning.



lsz162-300900-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 pm est thu jan 29 2026 /300 pm cst thu jan 29 2026/

.late this afternoon...north winds 10 to 20 knots. a chance of
snow showers. waves 1 to 3 feet. 
.tonight...north winds 10 to 20 knots becoming northeast 15 to
25 knots by midnight, then backing north late. a chance of snow
showers. waves building to 3 to 6 feet occasionally to 8 feet. 
.friday...north winds 10 to 20 knots. a slight chance of snow
showers in the morning. waves subsiding to calm to 2 feet. 
.friday night...north winds 10 to 20 knots diminishing to 5 to
15 knots by midnight. waves calm to 2 feet. 
.saturday...west winds 5 to 15 knots backing southwest in the
afternoon. waves calm to 2 feet. 
.saturday night...southwest winds 5 to 15 knots increasing to
10 to 20 knots after midnight. waves building to 1 to 3 feet. 
.sunday...southwest winds 10 to 20 knots. a chance of snow
showers in the morning, then snow showers likely in the
afternoon. waves subsiding to calm to 2 feet. 
.sunday night...northwest winds 10 to 20 knots veering north
after midnight. waves calm to 2 feet. 
.monday...northwest winds 10 to 20 knots becoming north 5 to
15 knots. waves calm to 2 feet. 
.tuesday...east winds 5 to 15 knots veering southwest. waves calm
to 2 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 292101
glfls 
expires:202601300900;;755558

open lake forecast for lake superior
national weather service marquette mi
400 pm est thu jan 29 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, remnant 30.3 inch troughing over eastern lake superior this 
afternoon continues to weaken through tonight as 30.5 inch high 
pressure over manitoba and the dakotas strengthens to 30.9 inches by 
friday morning. this will send 30.6 inch ridging over the lake on 
friday. ridging over the lake will then gradually weaken to 30.3 
inches through the weekend as high pressure shifts southeast into 
the lower mississippi valley at 30.5 inches by sunday. a 29.9 inch 
trough will cross the lake sunday night, followed by another 30.5 
inch high moving over the lake by tuesday morning.



lsz263-300900-
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 pm est thu jan 29 2026

...heavy freezing spray warning in effect through friday
morning...

.late this afternoon...north winds 10 to 20 knots. a chance of
snow showers. waves 2 to 4 feet. 
.tonight...north winds 15 to 25 knots diminishing to 10 to
20 knots late. heavy freezing spray. a chance of snow showers.
waves building to 3 to 6 feet occasionally to 8 feet. 
.friday...north winds 10 to 20 knots increasing to 15 to 25 knots
by mid afternoon. a chance of snow showers. waves subsiding to
2 to 4 feet, then building to 3 to 5 feet occasionally to 7 feet.
.friday night...north winds 15 to 25 knots diminishing to 5 to
15 knots. waves subsiding to 1 to 3 feet. 
.saturday...northwest winds 5 to 15 knots backing southwest in
the afternoon. waves subsiding to calm to 2 feet. 
.saturday night...southwest winds 10 to 20 knots. waves building
to 1 to 3 feet. 
.sunday...southwest winds 10 to 20 knots. a chance of snow
showers. waves 1 to 3 feet. 
.sunday night...west winds 10 to 20 knots becoming north 15 to
25 knots after midnight. waves building to 2 to 4 feet. 
.monday...north winds 10 to 20 knots diminishing to 5 to
15 knots. waves subsiding to calm to 2 feet. 
.tuesday...northeast winds 5 to 15 knots veering southwest. waves
calm to 2 feet. 

note, wave height forecasts are for ice free areas.

$$