fzus63 kmqt 251026 cca
glfls 
expires:202511252100;;474104

open lake forecast for lake superior...corrected
national weather service marquette mi
526 am est tue nov 25 2025

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 29.8 inch low continues to move closer to the great lakes from the 
west today, deepening to 29.6 inches by tonight over the upper 
peninsula. by the time it passes over eastern lake superior on 
wednesday, it will have strengthened to 29.3 inches. this low 
deepens further to 29.2 inches over quebec thursday while 30.5 inch 
high pressure builds over the northern great plains in its wake. 
this high moves over lake superior friday into the weekend.



lsz162-252100-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
526 am est tue nov 25 2025 /426 am cst tue nov 25 2025/

...gale warning in effect from 3 pm est /2 pm cst/ this afternoon
through thursday morning...

.early this morning...northeast winds 15 to 25 knots. waves 2 to
4 feet. 
.today...northeast winds 15 to 25 knots increasing to gales to
35 knots. a chance of rain. a chance of snow in the afternoon.
waves building to 6 to 9 feet occasionally to 11 feet. 
.tonight...northeast gales to 35 knots becoming north gales to
45 knots by midnight. a slight chance of rain in the evening.
snow. waves building to 12 to 17 feet occasionally to 21 feet. 
.wednesday...north gales to 45 knots becoming northwest gales to
40 knots by mid afternoon. snow. waves subsiding to 9 to 12 feet
occasionally to 15 feet. 
.wednesday night...northwest gales to 40 knots. a chance of snow
showers. waves subsiding to 5 to 8 feet occasionally to 10 feet. 
.thursday...northwest winds 20 to 30 knots. waves subsiding to
3 to 6 feet occasionally to 8 feet. 
.thursday night...northwest winds 15 to 25 knots. waves subsiding
to 1 to 3 feet. 
.friday...northwest winds 10 to 20 knots diminishing to 5 to
15 knots. waves subsiding to calm to 2 feet. 
.saturday...northwest winds 5 to 15 knots veering north. a chance
of snow showers. waves calm to 2 feet. 

$$

fzus63 kmqt 251026 cca
glfls 
expires:202511252100;;474105

open lake forecast for lake superior...corrected
national weather service marquette mi
526 am est tue nov 25 2025

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 29.8 inch low continues to move closer to the great lakes from the 
west today, deepening to 29.6 inches by tonight over the upper 
peninsula. by the time it passes over eastern lake superior on 
wednesday, it will have strengthened to 29.3 inches. this low 
deepens further to 29.2 inches over quebec thursday while 30.5 inch 
high pressure builds over the northern great plains in its wake. 
this high moves over lake superior friday into the weekend.



lsz263-252100-
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-
526 am est tue nov 25 2025

...gale warning in effect from this evening through thursday
afternoon...

.early this morning...northeast winds 10 to 20 knots. waves 2 to
4 feet. 
.today...northeast winds 10 to 20 knots increasing to 20 to
30 knots. a chance of rain. a slight chance of snow in the
afternoon. waves building to 6 to 9 feet occasionally to 11 feet.
.tonight...northeast gales to 40 knots becoming north gales to
45 knots late. rain in the evening. snow. waves building to 15 to
20 feet occasionally to 25 feet. 
.wednesday...north gales to 45 knots. snow. waves subsiding to
12 to 17 feet occasionally to 21 feet. 
.wednesday night...north gales to 40 knots backing northwest
after midnight. snow showers likely in the evening, then a chance
of snow showers after midnight. waves subsiding to 9 to 12 feet
occasionally to 15 feet. 
.thursday...northwest gales to 35 knots diminishing to 20 to
30 knots in the afternoon. a chance of snow showers. waves
subsiding to 5 to 8 feet occasionally to 10 feet. 
.thursday night...northwest winds 20 to 30 knots diminishing to
15 to 25 knots after midnight. a chance of snow showers. waves
subsiding to 3 to 6 feet occasionally to 8 feet. 
.friday...northwest winds 15 to 25 knots diminishing to 5 to
15 knots. waves subsiding to calm to 2 feet. 
.saturday...northwest winds 5 to 15 knots. a chance of snow
showers. waves calm to 2 feet. 

$$