fzus63 kmqt 200301
glfls 
expires:202601200900;;189357

open lake forecast for lake superior
national weather service marquette mi
1000 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...

thhrough tonight and tuesday morning, lake superior will be between 
a 30.5 inch high over the lower mississippi valley and a 29.7 inch 
low over hudson bay. by tuesday night, the high will shift over the 
virginias at 30.6 inches while the low remains stationary. 
meanwhile, a 30.0 inch low forms over the ok panhandle, quickly 
moving over lake michigan by wednesday morning. by midday wednesday, 
the low will move over the michigan lower peninsula at 29.9 inches 
as a weak 30.0 inch ridge fills over the upper mississippi valley 
while the hudson low extends a 29.9 inch front over the dakotas. the 
front and remnant low from the lower peninsula will consolidate into 
a 29.7 inch low over northeastern ontario wednesday night before 
shifting to quebec thursday morning. in the wake of the low, 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.



lsz162-200900-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1000 pm est mon jan 19 2026 /900 pm cst mon jan 19 2026/

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

.rest of tonight...northwest winds 20 to 30 knots diminishing to
15 to 25 knots by midnight, then backing west late. heavy
freezing spray late in the evening. a chance of snow showers.
waves 5 to 8 feet occasionally to 10 feet subsiding to 3 to
6 feet occasionally to 8 feet. 
.tuesday...west winds 15 to 25 knots. a slight chance of snow
showers. waves subsiding to 3 to 6 feet occasionally to 8 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 building to 3 to 6 feet
occasionally to 8 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 200301
glfls 
expires:202601200900;;189358

open lake forecast for lake superior
national weather service marquette mi
1000 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...

thhrough tonight and tuesday morning, lake superior will be between 
a 30.5 inch high over the lower mississippi valley and a 29.7 inch 
low over hudson bay. by tuesday night, the high will shift over the 
virginias at 30.6 inches while the low remains stationary. 
meanwhile, a 30.0 inch low forms over the ok panhandle, quickly 
moving over lake michigan by wednesday morning. by midday wednesday, 
the low will move over the michigan lower peninsula at 29.9 inches 
as a weak 30.0 inch ridge fills over the upper mississippi valley 
while the hudson low extends a 29.9 inch front over the dakotas. the 
front and remnant low from the lower peninsula will consolidate into 
a 29.7 inch low over northeastern ontario wednesday night before 
shifting to quebec thursday morning. in the wake of the low, 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.



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-
1000 pm est mon jan 19 2026

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

.rest of tonight...northwest winds 15 to 25 knots. heavy freezing
spray. snow showers likely. waves 7 to 10 feet occasionally to
13 feet subsiding to 5 to 8 feet occasionally to 10 feet. 
.tuesday...west winds 15 to 25 knots. heavy freezing spray. a
chance of snow showers. waves building to 5 to 9 feet
occasionally to 11 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 3 to 5 feet
occasionally to 7 feet. 
.wednesday night...northwest winds 15 to 25 knots increasing to
20 to 30 knots after midnight. a slight chance of snow showers in
the evening. heavy freezing spray after midnight. waves building
to 5 to 8 feet occasionally to 10 feet. 
.thursday...northwest winds 20 to 30 knots. heavy freezing spray.
waves building to 5 to 9 feet occasionally to 11 feet. 
.thursday night...northwest winds 20 to 30 knots. heavy freezing
spray. waves building to 5 to 9 feet occasionally to 11 feet. 
.friday...northwest winds 20 to 30 knots diminishing to 15 to
25 knots. heavy freezing spray. waves subsiding to 1 to 3 feet. 
.saturday...west winds 5 to 15 knots. waves 1 to 3 feet. 

note, wave height forecasts are for ice free areas.

$$