fzus63 kmqt 270901
glfls 
expires:202601272100;;614274

open lake forecast for lake superior
national weather service marquette mi
400 am est tue jan 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 29.6 inch shortwave low over eastern lake superior this morning 
lifts away towards the st. lawrence seaway by this afternoon as it 
weakens to 29.8 inches. afterwards, a much weaker low grazes the 
northeast portion of the lake at 30.0 inches tonight into wednesday. 
remnant troughing gradually weakens over the lake thursday through 
friday before strong high pressure around 31.0 inches descending 
from the canadian prairies brings ridging of around 30.6 inches back 
over lake superior on saturday.



lsz162-272100-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 am est tue jan 27 2026 /300 am cst tue jan 27 2026/

...heavy freezing spray warning in effect through late tonight...

.early this morning...northwest winds to 30 knots with a few gale
force gusts to 35 knots possible. heavy freezing spray. a slight
chance of snow showers. waves 5 to 8 feet occasionally to
10 feet. 
.today...northwest winds 20 to 30 knots diminishing to 15 to
25 knots by late morning, then becoming west 20 to 30 knots by
mid afternoon. heavy freezing spray in the morning. a slight
chance of snow showers in the morning. waves subsiding to 3 to
5 feet occasionally to 7 feet. 
.tonight...west winds 20 to 30 knots becoming northwest 15 to
25 knots by midnight. a chance of snow showers 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. a chance of snow
showers. waves subsiding to calm to 2 feet. 
.wednesday night...northwest winds 10 to 20 knots veering north
after midnight. a slight chance of snow showers. waves calm to
2 feet. 
.thursday...north winds 10 to 20 knots. waves calm to 2 feet. 
.thursday night...north winds 10 to 20 knots. waves building to
1 to 3 feet, then subsiding to calm to 2 feet. 
.friday...north winds 10 to 20 knots diminishing to 5 to
15 knots. waves calm to 2 feet. 
.saturday...southwest 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 270901
glfls 
expires:202601272100;;614275

open lake forecast for lake superior
national weather service marquette mi
400 am est tue jan 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 29.6 inch shortwave low over eastern lake superior this morning 
lifts away towards the st. lawrence seaway by this afternoon as it 
weakens to 29.8 inches. afterwards, a much weaker low grazes the 
northeast portion of the lake at 30.0 inches tonight into wednesday. 
remnant troughing gradually weakens over the lake thursday through 
friday before strong high pressure around 31.0 inches descending 
from the canadian prairies brings ridging of around 30.6 inches back 
over lake superior on saturday.



lsz263-272100-
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 tue jan 27 2026

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

.early this morning...northwest winds 20 to 30 knots. heavy
freezing spray. a chance of snow showers. waves 6 to 9 feet
occasionally to 11 feet. 
.today...northwest winds 20 to 30 knots diminishing to 15 to
25 knots. heavy freezing spray. a chance of snow showers. waves
subsiding to 3 to 6 feet occasionally to 8 feet, then building to
4 to 7 feet occasionally to 9 feet. 
.tonight...northwest winds 15 to 25 knots diminishing to 10 to
20 knots late. heavy freezing spray. a chance of snow showers.
waves building to 5 to 8 feet occasionally to 10 feet, then
subsiding to 3 to 5 feet occasionally to 7 feet. 
.wednesday...northwest winds 10 to 20 knots veering north by late
morning, then backing northwest by mid afternoon. a chance of
snow showers. waves subsiding to 2 to 4 feet. 
.wednesday night...north winds 10 to 20 knots. a chance of snow
showers. waves 2 to 4 feet. 
.thursday...north winds 10 to 20 knots. a chance of snow showers.
waves 2 to 4 feet. 
.thursday night...north winds 15 to 25 knots. waves building to
3 to 6 feet occasionally to 8 feet. 
.friday...north winds 15 to 25 knots diminishing to 10 to
20 knots. waves subsiding to 1 to 3 feet. 
.saturday...west winds 5 to 15 knots backing southwest. waves
subsiding to calm to 2 feet, then building to 1 to 3 feet. 

note, wave height forecasts are for ice free areas.

$$