fzus63 kmqt 221544
glfls 
expires:202601222345;;332499

open lake forecast for lake superior
national weather service marquette mi
1044 am est thu jan 22 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 low near the ontario/quebec border this morning will 
lift northeast into northern quebec by this evening. in the wake of 
the low, a 31.0 inch high pressure will be over saskatchewan, 
shifting over the dakotas friday and overspreading the upper midwest 
at around 30.7 inches saturday. remnant ridging of at least 30.3 
inches remains over lake superior through sunday. a 29.8 inch trough 
will approach the lake on monday evening, eventually moving through 
monday night as the high pressure slides south and east away from 
the area.



lsz162-222345-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1044 am est thu jan 22 2026 /944 am cst thu jan 22 2026/

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

.rest of today...northwest winds 15 to 25 knots increasing to
30 knots with a few gale force gusts to 35 knots possible by mid
afternoon. scattered snow showers. heavy freezing spray in the
afternoon. waves 3 to 5 feet occasionally to 7 feet building to
7 to 10 feet occasionally to 13 feet. 
.tonight...northwest winds to 30 knots with a few gale force
gusts to 35 knots possible diminishing to 20 to 30 knots by
midnight. heavy freezing spray. scattered snow showers. waves
subsiding to 4 to 7 feet occasionally to 9 feet. 
.friday...northwest winds 15 to 25 knots. scattered snow showers.
waves subsiding to 1 to 3 feet. 
.friday night...northwest winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. scattered snow showers. waves
subsiding to calm to 2 feet. 
.saturday...west winds 5 to 15 knots becoming southwest 10 to
20 knots in the afternoon. scattered snow showers. waves calm to
2 feet. 
.saturday night...west winds 5 to 15 knots. a chance of snow
showers. waves calm to 2 feet. 
.sunday...northwest winds 5 to 15 knots increasing to 10 to
20 knots. waves calm to 2 feet. 
.monday...west winds 15 to 25 knots. waves building to 2 to
4 feet, then subsiding to 1 to 3 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 221544
glfls 
expires:202601222345;;332500

open lake forecast for lake superior
national weather service marquette mi
1044 am est thu jan 22 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 low near the ontario/quebec border this morning will 
lift northeast into northern quebec by this evening. in the wake of 
the low, a 31.0 inch high pressure will be over saskatchewan, 
shifting over the dakotas friday and overspreading the upper midwest 
at around 30.7 inches saturday. remnant ridging of at least 30.3 
inches remains over lake superior through sunday. a 29.8 inch trough 
will approach the lake on monday evening, eventually moving through 
monday night as the high pressure slides south and east away from 
the area.



lsz263-222345-
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-
1044 am est thu jan 22 2026

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

.rest of today...northwest winds 15 to 25 knots increasing to
20 to 30 knots by mid afternoon. heavy freezing spray. scattered
snow showers late in the morning. numerous snow showers in the
afternoon. waves 4 to 8 feet occasionally to 10 feet, then
building to 9 to 12 feet occasionally to 15 feet. 
.tonight...northwest winds 20 to 30 knots. heavy freezing spray.
numerous snow showers. waves subsiding to 6 to 9 feet
occasionally to 11 feet. 
.friday...northwest winds 20 to 30 knots diminishing to 15 to
25 knots. heavy freezing spray. numerous snow showers in the
morning. scattered snow showers in the afternoon. waves subsiding
to 3 to 5 feet occasionally to 7 feet. 
.friday night...northwest winds 15 to 25 knots diminishing to
10 to 20 knots after midnight. scattered snow showers. waves
subsiding to 1 to 3 feet. 
.saturday...west winds 5 to 15 knots. scattered snow showers.
waves subsiding to calm to 2 feet. 
.saturday night...southwest winds 5 to 15 knots veering west
after midnight. a chance of snow showers. waves calm to 2 feet. 
.sunday...northwest winds 5 to 15 knots increasing to 10 to
20 knots. waves building to 1 to 3 feet. 
.monday...west winds 20 to 30 knots. heavy freezing spray. waves
building to 3 to 6 feet occasionally to 8 feet. 

note, wave height forecasts are for ice free areas.

$$