fzus63 kmqt 192101
glfls 
expires:202601200900;;176063

open lake forecast for lake superior
national weather service marquette mi
400 pm est mon jan 19 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 high pressure over the midwest will extend weak ridging of 30.1 
inches over the western part of the lake tonight while weak 
troughing of 30.0 inches slowly moves though the eastern half of the 
lake. these features remain in place on tuesday as a 30.3 inch high 
moves south of the area. a 29.8 inch low then moves over lower 
michigan on wednesday ahead of a secondary 29.8 inch low moving into 
lake superior later in the day. as the lows phase and continue east 
wednesday night into thursday, a weak remnant trough of 30.0 inches 
extends over the lake. after that, a 31.0 inch high builds from the 
canadian prairies into the northern plains thursday night through 
friday. this high builds into the upper midwest friday night into 
saturday as it weakens to 30.7 inches.



lsz162-200900-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 pm est mon jan 19 2026 /300 pm cst mon jan 19 2026/

...heavy freezing spray warning in effect until 11 pm est /10 pm
cst/ this evening...

.late this afternoon...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 3 to 6 feet occasionally to
8 feet building to 4 to 7 feet occasionally to 9 feet. 
.tonight...northwest winds 20 to 30 knots diminishing to 15 to
25 knots by midnight, then backing west late. heavy freezing
spray in the evening. a chance of snow showers. waves subsiding
to 3 to 5 feet occasionally to 7 feet. 
.tuesday...west winds 15 to 25 knots. a slight chance of snow
showers. waves subsiding to 2 to 4 feet. 
.tuesday night...west winds 10 to 20 knots. a chance of snow
showers. waves subsiding to calm to 2 feet. 
.wednesday...west winds 10 to 20 knots. a chance of snow showers.
waves building to 1 to 3 feet. 
.wednesday night...northwest winds 20 to 30 knots diminishing to
15 to 25 knots after midnight. waves building to 3 to 5 feet
occasionally to 7 feet. 
.thursday...northwest winds 15 to 25 knots increasing to 20 to
30 knots in the afternoon. waves 3 to 5 feet occasionally to
7 feet. 
.thursday night...northwest winds 20 to 30 knots diminishing to
15 to 25 knots after midnight. waves subsiding to 2 to 4 feet. 
.friday...northwest winds 15 to 25 knots diminishing to 10 to
20 knots. waves subsiding to calm to 2 feet. 
.saturday...west winds 10 to 20 knots. waves calm to 2 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 192101
glfls 
expires:202601200900;;176064

open lake forecast for lake superior
national weather service marquette mi
400 pm est mon jan 19 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 high pressure over the midwest will extend weak ridging of 30.1 
inches over the western part of the lake tonight while weak 
troughing of 30.0 inches slowly moves though the eastern half of the 
lake. these features remain in place on tuesday as a 30.3 inch high 
moves south of the area. a 29.8 inch low then moves over lower 
michigan on wednesday ahead of a secondary 29.8 inch low moving into 
lake superior later in the day. as the lows phase and continue east 
wednesday night into thursday, a weak remnant trough of 30.0 inches 
extends over the lake. after that, a 31.0 inch high builds from the 
canadian prairies into the northern plains thursday night through 
friday. this high builds into the upper midwest friday night into 
saturday as it weakens to 30.7 inches.



lsz263-200900-
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 mon jan 19 2026

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

.late this afternoon...northwest winds 20 to 30 knots. heavy
freezing spray. snow showers. waves 5 to 9 feet occasionally to
11 feet. 
.tonight...northwest winds 15 to 25 knots. heavy freezing spray.
snow showers likely. waves subsiding to 4 to 7 feet occasionally
to 9 feet. 
.tuesday...west winds 15 to 25 knots. heavy freezing spray. a
chance of snow showers. waves 4 to 7 feet occasionally to 9 feet.
.tuesday night...west winds 15 to 25 knots diminishing to 10 to
20 knots by midnight. heavy freezing spray in the evening. a
chance of snow showers. waves subsiding to 2 to 4 feet. 
.wednesday...west winds 10 to 20 knots increasing to 15 to
25 knots in the afternoon. a chance of snow showers. waves
subsiding to 1 to 3 feet, then building to 2 to 4 feet. 
.wednesday night...northwest winds 15 to 25 knots increasing to
20 to 30 knots after midnight. heavy freezing spray after
midnight. waves building to 4 to 7 feet occasionally to 9 feet. 
.thursday...northwest winds 20 to 30 knots. heavy freezing spray.
waves building to 4 to 8 feet occasionally to 10 feet. 
.thursday night...northwest winds 20 to 30 knots. heavy freezing
spray. waves 4 to 7 feet occasionally to 9 feet. 
.friday...northwest winds 20 to 30 knots diminishing to 15 to
25 knots. heavy freezing spray. waves subsiding to 2 to 4 feet. 
.saturday...west winds 5 to 15 knots. waves subsiding to calm to
2 feet, then building to 1 to 3 feet. 

note, wave height forecasts are for ice free areas.

$$