fzus63 kmqt 090901
glfls 
expires:202511092100;;106262

open lake forecast for lake superior
national weather service marquette mi
401 am est sun nov 9 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...

ridging builds over lake superior to 30.3 inches by this evening as 
30.7 inch high pressure builds over the great plains. the ridge 
weakens to 29.9 inches by monday night ahead of a 29.4 inch trough 
that's expected to move across the lake tuesday night into 
wednesday. by wednesday night, the lake will be between 30.1 inch 
ridging over the plains and a deep 28.7 inch low east of hudson bay.



lsz162-092100-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 am est sun nov 9 2025 /301 am cst sun nov 9 2025/

.early this morning...northwest winds 15 to 25 knots. waves 2 to
4 feet. 
.today...northwest winds 15 to 25 knots veering north by late
morning, then increasing to 20 to 30 knots by mid afternoon. a
slight chance of snow showers. waves building to 3 to 5 feet
occasionally to 7 feet. 
.tonight...north winds 20 to 30 knots diminishing to 15 to
25 knots by midnight. waves building to 3 to 6 feet occasionally
to 8 feet, then subsiding to 2 to 4 feet. 
.monday...north winds 15 to 25 knots becoming northwest 10 to
20 knots by late morning, then backing west by mid afternoon.
waves subsiding to calm to 2 feet. 
.monday night...west winds 10 to 20 knots becoming southwest
15 to 25 knots after midnight. a slight chance of snow showers
after midnight. waves building to 2 to 4 feet. 
.tuesday...southwest winds 20 to 30 knots veering west in the
afternoon. waves building to 3 to 6 feet occasionally to 8 feet. 
.tuesday night...west winds 20 to 30 knots. waves subsiding to
2 to 4 feet, then building to 3 to 6 feet occasionally to 8 feet.
.wednesday...northwest winds 20 to 30 knots becoming west 15 to
25 knots. waves subsiding to 2 to 4 feet. 
.thursday...west winds 15 to 25 knots becoming northwest 5 to
15 knots. waves subsiding to calm to 2 feet. 

$$

fzus63 kmqt 090901
glfls 
expires:202511092100;;106263

open lake forecast for lake superior
national weather service marquette mi
401 am est sun nov 9 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...

ridging builds over lake superior to 30.3 inches by this evening as 
30.7 inch high pressure builds over the great plains. the ridge 
weakens to 29.9 inches by monday night ahead of a 29.4 inch trough 
that's expected to move across the lake tuesday night into 
wednesday. by wednesday night, the lake will be between 30.1 inch 
ridging over the plains and a deep 28.7 inch low east of hudson bay.



lsz263-092100-
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-
401 am est sun nov 9 2025

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

$$