fzus63 kmqt 251501
glfls 
expires:202601252100;;509370

open lake forecast for lake superior
national weather service marquette mi
1000 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...

remnant 30.4 inch ridging over lake superior this morning gradually 
weakens to 30.1 inches through monday morning as a 30.7 inch high 
lifts through the saint lawrence seaway today, while another 30.8 
inch high drops south through the northern plains. a 29.8 inch low 
from manitoba deepens to 29.6 inches crosses the lake monday night 
into tuesday. a much weaker low grazes the northeast portion of the 
lake at 30.1 inches tuesday night into wednesday. strong high 
pressure descending from the canadian prairies late this week brings 
ridging of around 30.6 inches back over lake superior by friday, 
with ridging looking to persist into next weekend.



lsz162-252100-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1000 am est sun jan 25 2026 /900 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...

.rest of today...north winds 10 to 20 knots backing northwest. a
chance of snow showers. waves 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 3 to 5 feet occasionally to 7 feet. 
.tuesday...northwest winds 15 to 25 knots. waves subsiding to
2 to 4 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 251501
glfls 
expires:202601252100;;509371

open lake forecast for lake superior
national weather service marquette mi
1000 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...

remnant 30.4 inch ridging over lake superior this morning gradually 
weakens to 30.1 inches through monday morning as a 30.7 inch high 
lifts through the saint lawrence seaway today, while another 30.8 
inch high drops south through the northern plains. a 29.8 inch low 
from manitoba deepens to 29.6 inches crosses the lake monday night 
into tuesday. a much weaker low grazes the northeast portion of the 
lake at 30.1 inches tuesday night into wednesday. strong high 
pressure descending from the canadian prairies late this week brings 
ridging of around 30.6 inches back over lake superior by friday, 
with ridging looking to persist into next 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-
1000 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...

.rest of today...north winds 10 to 20 knots. a chance of snow
showers. waves 2 to 4 feet 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 4 to 7 feet occasionally to 9 feet. 
.tuesday...northwest winds 20 to 30 knots diminishing to 15 to
25 knots in the afternoon. a slight chance of snow showers. waves
subsiding to 3 to 5 feet occasionally to 7 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 6 feet occasionally to 8 feet, then subsiding to
2 to 4 feet. 
.wednesday...north winds 10 to 20 knots. waves subsiding to 1 to
3 feet, then building to 2 to 4 feet. 
.thursday...north winds 10 to 20 knots. waves subsiding to 1 to
3 feet, then building to 2 to 4 feet. 

note, wave height forecasts are for ice free areas.

$$