fzus63 kmqt 250900
glfls 
expires:202601252100;;493852

open lake forecast for lake superior
national weather service marquette mi
400 am est sun jan 25 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...

while remnant 30.4 inch ridging over lake superior weakens to 30.2 
inches by this evening, expect it to remain over the lake until 
monday morning as a 30.7 inch high lifts through the st. lawrence 
seaway today and another 30.8 inch high digs into the northern 
plains. a 29.8 inch low from manitoba crosses the lake monday night 
into tuesday, deepening to 29.6 inches as it does so. another low, 
much weaker at 30.1 inches, grazes the northeast portion of the lake 
tuesday night into wednesday. a strong high pressure descending from 
the canadian prairies late this week brings ridging of around 30.6 
inches back to lake superior by friday, with the ridging looking to 
stay into this upcoming weekend.



lsz162-252100-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 am est sun jan 25 2026 /300 am cst sun jan 25 2026/

...heavy freezing spray warning in effect from monday morning
through monday evening...
...gale watch in effect from monday afternoon through late monday
night...

.early this morning...northwest winds 5 to 15 knots. a chance of
snow showers. waves 1 to 3 feet. 
.today...north winds 5 to 15 knots becoming northwest 10 to
20 knots. a chance of snow showers. waves subsiding to calm to
2 feet. 
.tonight...northwest winds 10 to 20 knots increasing to 15 to
25 knots by midnight. a slight chance of snow showers. waves
building to 2 to 4 feet, then subsiding to 1 to 3 feet. 
.monday...west winds 15 to 25 knots becoming southwest 20 to
30 knots by late morning, then increasing to gales to 35 knots by
mid afternoon. a chance of snow showers in the afternoon. waves
building to 6 to 9 feet occasionally to 11 feet. 
.monday night...west gales to 35 knots becoming northwest 20 to
30 knots after midnight. a chance of snow showers. waves
subsiding to 2 to 4 feet. 
.tuesday...northwest winds 15 to 25 knots. waves subsiding to
1 to 3 feet. 
.tuesday night...northwest winds 15 to 25 knots diminishing to
10 to 20 knots after midnight. waves subsiding to calm to 2 feet.
.wednesday...northwest winds 10 to 20 knots veering north. waves
calm to 2 feet. 
.thursday...north winds 5 to 15 knots increasing to 10 to
20 knots. waves calm to 2 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 250900
glfls 
expires:202601252100;;493853

open lake forecast for lake superior
national weather service marquette mi
400 am est sun jan 25 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...

while remnant 30.4 inch ridging over lake superior weakens to 30.2 
inches by this evening, expect it to remain over the lake until 
monday morning as a 30.7 inch high lifts through the st. lawrence 
seaway today and another 30.8 inch high digs into the northern 
plains. a 29.8 inch low from manitoba crosses the lake monday night 
into tuesday, deepening to 29.6 inches as it does so. another low, 
much weaker at 30.1 inches, grazes the northeast portion of the lake 
tuesday night into wednesday. a strong high pressure descending from 
the canadian prairies late this week brings ridging of around 30.6 
inches back to lake superior by friday, with the ridging looking to 
stay into this upcoming weekend.



lsz263-252100-
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 est sun jan 25 2026

...heavy freezing spray warning in effect from monday morning
through monday evening...
...gale watch in effect from monday afternoon through late monday
night...

.early this morning...north winds 10 to 20 knots. snow showers
likely. waves 2 to 4 feet. 
.today...north winds 10 to 20 knots. a chance of snow showers.
waves subsiding to 1 to 3 feet. 
.tonight...northwest winds 10 to 20 knots increasing to 15 to
25 knots late. a chance of snow showers. waves building to 3 to
5 feet occasionally to 7 feet. 
.monday...west winds 20 to 30 knots becoming southwest gales to
35 knots by mid afternoon. a chance of snow showers. heavy
freezing spray in the afternoon. waves building to 7 to 10 feet
occasionally to 13 feet. 
.monday night...west gales to 35 knots becoming northwest 20 to
30 knots after midnight. heavy freezing spray. snow showers
likely in the evening. a chance of snow showers after midnight.
waves subsiding to 3 to 6 feet occasionally to 8 feet. 
.tuesday...northwest winds 20 to 30 knots diminishing to 15 to
25 knots in the afternoon. waves subsiding to 2 to 4 feet. 
.tuesday night...northwest winds 15 to 25 knots diminishing to
10 to 20 knots after midnight. a chance of snow showers. waves
building to 3 to 5 feet occasionally to 7 feet, then subsiding to
1 to 3 feet. 
.wednesday...north winds 10 to 20 knots. waves building to 2 to
4 feet. 
.thursday...north winds 10 to 20 knots. waves subsiding to 1 to
3 feet. 

note, wave height forecasts are for ice free areas.

$$