fzus63 kmqt 171501
glfls 
expires:202601172100;;045515

open lake forecast for lake superior
national weather service marquette mi
1000 am est sat jan 17 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 over eastern upper michigan this morning slowly 
meanders to just north of georgian bay today, weakening to 29.7 
inches by this evening when it reaches quebec. meanwhile, a 30.6 
inch high moves over the plains. while the low lifts northeast 
through quebec tonight, the high moves into texas, briefly extending 
29.9 inch ridging over lake superior. this is quickly replaced by a 
29.8 inch clipper low on sunday. the low deepens to 29.6 inches over 
far eastern lake superior sunday night, then moves to quebec on 
monday while another high pressure of 30.6 inches drops south over 
the plains. this builds ridging to 30.1 inches over much of lake 
superior on monday which weakens on tuesday. a low of at least 29.9 
inches then moves over lake superior on wednesday.



lsz162-172100-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1000 am est sat jan 17 2026 /900 am cst sat jan 17 2026/

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

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 171501
glfls 
expires:202601172100;;045516

open lake forecast for lake superior
national weather service marquette mi
1000 am est sat jan 17 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 over eastern upper michigan this morning slowly 
meanders to just north of georgian bay today, weakening to 29.7 
inches by this evening when it reaches quebec. meanwhile, a 30.6 
inch high moves over the plains. while the low lifts northeast 
through quebec tonight, the high moves into texas, briefly extending 
29.9 inch ridging over lake superior. this is quickly replaced by a 
29.8 inch clipper low on sunday. the low deepens to 29.6 inches over 
far eastern lake superior sunday night, then moves to quebec on 
monday while another high pressure of 30.6 inches drops south over 
the plains. this builds ridging to 30.1 inches over much of lake 
superior on monday which weakens on tuesday. a low of at least 29.9 
inches then moves over lake superior on wednesday.



lsz263-172100-
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 sat jan 17 2026

...gale watch in effect from sunday evening through monday
morning...

.rest of today...north winds 20 to 30 knots diminishing to 15 to
25 knots by mid afternoon. freezing spray. a chance of snow
showers. waves 6 to 9 feet occasionally to 11 feet subsiding to
3 to 6 feet occasionally to 8 feet. 
.tonight...north winds 10 to 20 knots diminishing to 5 to
15 knots by midnight, then increasing to 10 to 20 knots late. a
chance of snow showers. waves subsiding to 1 to 3 feet, then
building to 2 to 4 feet. 
.sunday...southwest winds 10 to 20 knots becoming west 15 to
25 knots by mid afternoon. snow showers likely. freezing spray in
the afternoon. waves 2 to 4 feet. 
.sunday night...north gales to 35 knots. heavy freezing spray. a
chance of snow showers. waves building to 9 to 12 feet
occasionally to 15 feet. 
.monday...northwest gales to 35 knots diminishing to 20 to
30 knots in the afternoon. heavy freezing spray. a chance of snow
showers. waves subsiding to 4 to 7 feet occasionally to 9 feet. 
.monday night...northwest winds 20 to 30 knots becoming west
15 to 25 knots after midnight. heavy freezing spray. waves
building to 5 to 8 feet occasionally to 10 feet, then subsiding
to 3 to 6 feet occasionally to 8 feet. 
.tuesday...west winds 15 to 25 knots diminishing to 10 to
20 knots. waves subsiding to 1 to 3 feet. 
.wednesday...northwest winds 10 to 20 knots increasing to 15 to
25 knots. waves building to 3 to 5 feet occasionally to 7 feet. 

note, wave height forecasts are for ice free areas.

$$