fzus63 kmqt 080301
glfls 
expires:202511080900;;032441

open lake forecast for lake superior
national weather service marquette mi
1001 pm est fri nov 7 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 29.3 inch low over eastern ontario this evening will push into 
quebec tonight and saturday. ridging will build over the lake this 
weekend as the low exits and 30.6 inch high pressure develops over 
the great plains, with the ridge over the lake strengthening from 
29.8 inches on saturday to 30.2 inches through sunday night. the 
ridge quickly breaks down early next week as a 29.4 inch trough 
sweeps across the lake tuesday into wednesday morning. by wednesday 
night the lake will be between 30.1 inch ridging over the plains and 
a deep 28.8 inch low over the hudson bay.



lsz162-080900-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1001 pm est fri nov 7 2025 /901 pm cst fri nov 7 2025/

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

$$

fzus63 kmqt 080301
glfls 
expires:202511080900;;032442

open lake forecast for lake superior
national weather service marquette mi
1001 pm est fri nov 7 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 29.3 inch low over eastern ontario this evening will push into 
quebec tonight and saturday. ridging will build over the lake this 
weekend as the low exits and 30.6 inch high pressure develops over 
the great plains, with the ridge over the lake strengthening from 
29.8 inches on saturday to 30.2 inches through sunday night. the 
ridge quickly breaks down early next week as a 29.4 inch trough 
sweeps across the lake tuesday into wednesday morning. by wednesday 
night the lake will be between 30.1 inch ridging over the plains and 
a deep 28.8 inch low over the hudson bay.



lsz263-080900-
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-
1001 pm est fri nov 7 2025

.rest of tonight...north winds 10 to 20 knots diminishing to 5 to
15 knots late. waves 3 to 5 feet occasionally to 7 feet subsiding
to calm to 2 feet. 
.saturday...northwest winds 5 to 15 knots veering north by late
morning, then increasing to 10 to 20 knots by mid afternoon. a
slight chance of snow showers in the afternoon. waves calm to
2 feet. 
.saturday night...north winds 10 to 20 knots becoming northwest
15 to 25 knots by midnight. a chance of snow showers. waves
building to 3 to 6 feet occasionally to 8 feet. 
.sunday...northwest winds 20 to 30 knots veering north in the
afternoon. a chance of snow showers. waves building to 4 to
7 feet occasionally to 9 feet. 
.sunday night...north gales to 35 knots diminishing to 20 to
30 knots after midnight. a chance of snow showers. waves 4 to
7 feet occasionally to 9 feet. 
.monday...north winds 20 to 30 knots becoming northwest 15 to
25 knots in the afternoon. waves subsiding to 2 to 4 feet. 
.monday night...west winds 10 to 20 knots becoming southwest
15 to 25 knots after midnight. waves subsiding to 1 to 3 feet,
then building to 2 to 4 feet. 
.tuesday...southwest gales to 35 knots veering west. waves
building to 6 to 9 feet occasionally to 11 feet. 
.wednesday...west gales to 45 knots becoming northwest gales to
40 knots. waves building to 9 to 12 feet occasionally to 15 feet,
then subsiding to 6 to 9 feet occasionally to 11 feet. 

$$