fzus63 kmqt 260300
glfls 
expires:202511260900;;513239

open lake forecast for lake superior
national weather service marquette mi
1000 pm 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 29.6 inch low over west-cental wisconsin will deepen to 29.3 
inches over eastern upper michigan by wednesday afternoon. by 
thursday, the low will shift into quebec, maintaining 29.4 inches. 
meanwhile, a 30.6 inch high will develop over the canadian prairie. 
with the low lifting further northeast for friday, the high will 
weaken slightly to 30.5 inches as it moves into the mississippi 
river valley. the high then shifts over the lower great lakes 
saturday morning while 29.7 inch low pressure develops over the ok 
panhandle. this low ejects northeast, reaching the upper great lakes 
at 29.7 inches sunday afternoon. monday, the low will lift into 
quebec at 29.5 inches while 30.5 inch high pressure builds over the 
central plains.



lsz162-260900-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1000 pm est tue nov 25 2025 /900 pm cst tue nov 25 2025/

...gale warning in effect through thursday morning...

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

$$

fzus63 kmqt 260300
glfls 
expires:202511260900;;513240

open lake forecast for lake superior
national weather service marquette mi
1000 pm 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 29.6 inch low over west-cental wisconsin will deepen to 29.3 
inches over eastern upper michigan by wednesday afternoon. by 
thursday, the low will shift into quebec, maintaining 29.4 inches. 
meanwhile, a 30.6 inch high will develop over the canadian prairie. 
with the low lifting further northeast for friday, the high will 
weaken slightly to 30.5 inches as it moves into the mississippi 
river valley. the high then shifts over the lower great lakes 
saturday morning while 29.7 inch low pressure develops over the ok 
panhandle. this low ejects northeast, reaching the upper great lakes 
at 29.7 inches sunday afternoon. monday, the low will lift into 
quebec at 29.5 inches while 30.5 inch high pressure builds over the 
central plains.



lsz263-260900-
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 tue nov 25 2025

...gale warning in effect through thursday afternoon...

.rest of tonight...northeast gales to 40 knots becoming north
gales to 45 knots late. rain showers late in the evening. snow
showers. a slight chance of rain showers after midnight. waves
9 to 12 feet occasionally to 15 feet building to 15 to 20 feet
occasionally to 25 feet. 
.wednesday...north gales to 45 knots with a few storm force gusts
to 50 knots possible diminishing to gales to 45 knots. snow
showers. waves subsiding to 12 to 17 feet occasionally to
21 feet. 
.wednesday night...north gales to 45 knots becoming northwest
gales to 40 knots by midnight. a chance of snow showers. waves
subsiding to 9 to 12 feet occasionally to 15 feet. 
.thursday...northwest gales to 40 knots. 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 slight chance of snow showers.
waves subsiding to 3 to 6 feet occasionally to 8 feet. 
.friday...northwest winds 15 to 25 knots diminishing to 10 to
20 knots in the afternoon. waves subsiding to calm to 2 feet. 
.friday night...northwest winds 5 to 15 knots. waves calm to
2 feet. 
.saturday...north winds 5 to 15 knots increasing to 15 to
25 knots. a chance of snow showers. waves building to 2 to
4 feet. 
.sunday...northwest winds 15 to 25 knots. waves building to 3 to
5 feet occasionally to 7 feet, then subsiding to 2 to 4 feet. 

$$