fzus63 kmqt 252101
glfls 
expires:202601260900;;527234

open lake forecast for lake superior
national weather service marquette mi
400 pm 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 30.3 inch ridging over lake superior this afternoon 
gradually weakens to 30.1 inches through monday morning as a 30.7 
inch high lifts through the saint lawrence seaway, while another 
30.8 inch high drops south through the northern plains. a 29.8 inch 
low from manitoba deepens to 29.6 inches as it 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.



lsz162-260900-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 pm est sun jan 25 2026 /300 pm cst sun jan 25 2026/

...heavy freezing spray warning in effect from monday afternoon
through monday evening...
...gale warning in effect from monday afternoon through monday
evening...

.late this afternoon...northwest winds 10 to 20 knots. a slight
chance of snow showers. waves calm to 2 feet. 
.tonight...northwest winds 10 to 20 knots increasing to 15 to
25 knots by midnight, then backing west late. 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 slight chance of snow showers in the morning,
then snow showers likely in the afternoon. 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 by midnight. heavy freezing spray in the evening. a
chance of snow showers. waves subsiding to 3 to 6 feet
occasionally to 8 feet. 
.tuesday...northwest winds 15 to 25 knots backing west in the
afternoon. waves subsiding to 2 to 4 feet. 
.tuesday night...west winds 15 to 25 knots becoming northwest
10 to 20 knots after midnight. waves subsiding to calm to 2 feet.
.wednesday...northwest winds 10 to 20 knots. waves calm to
2 feet. 
.wednesday night...northwest winds 10 to 20 knots veering north
after midnight. waves calm to 2 feet. 
.thursday...north winds 5 to 15 knots increasing to 10 to
20 knots. waves calm to 2 feet. 
.friday...north winds 5 to 15 knots backing northwest. waves calm
to 2 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 252101
glfls 
expires:202601260900;;527235

open lake forecast for lake superior
national weather service marquette mi
400 pm 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 30.3 inch ridging over lake superior this afternoon 
gradually weakens to 30.1 inches through monday morning as a 30.7 
inch high lifts through the saint lawrence seaway, while another 
30.8 inch high drops south through the northern plains. a 29.8 inch 
low from manitoba deepens to 29.6 inches as it 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.



lsz263-260900-
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 sun jan 25 2026

...heavy freezing spray warning in effect from monday morning
through tuesday morning...
...gale warning in effect from monday afternoon through monday
evening...

.late this afternoon...northwest winds 10 to 20 knots. a chance
of snow showers. waves 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 backing southwest by late
morning, then increasing to gales to 35 knots by mid afternoon.
heavy freezing spray. a chance of snow showers. waves building to
7 to 10 feet occasionally to 13 feet. 
.monday night...west gales to 35 knots becoming northwest 20 to
30 knots by midnight. heavy freezing spray. a chance of snow
showers. waves building to 9 to 12 feet occasionally to 15 feet,
then subsiding to 5 to 8 feet occasionally to 10 feet. 
.tuesday...northwest winds 20 to 30 knots diminishing to 15 to
25 knots in the afternoon. heavy freezing spray in the morning.
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. waves building to 3 to 6 feet
occasionally to 8 feet, then subsiding to 2 to 4 feet. 
.wednesday...northwest winds 10 to 20 knots veering north in the
afternoon. waves subsiding to 1 to 3 feet. 
.wednesday night...north winds 10 to 20 knots. waves building to
2 to 4 feet. 
.thursday...north winds 10 to 20 knots increasing to 15 to
25 knots. waves subsiding to 1 to 3 feet, then building to 2 to
4 feet. 
.friday...north winds 10 to 20 knots. waves subsiding to calm to
2 feet, then building to 1 to 3 feet. 

note, wave height forecasts are for ice free areas.

$$