fzus63 kmqt 100901
glfls 
expires:202511102100;;165117

open lake forecast for lake superior
national weather service marquette mi
401 am est mon nov 10 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...

30.3 inch ridging remains over lake superior this morning, with 30.7 
inch high pressure over the great plains. this evening, a 29.3 inch 
low over northern saskatchewan will begin to erode the ridge over 
lake superior down to 30.1 inches. as the low pushes towards hudson 
bay tuesday, a 29.5 inch trough draped south from the low will push 
over the lake. by wednesday night, the lake will be between 30.1 
inch ridging over the plains and a deep 28.4 inch low over labrador. 
ridging builds to 30.0 inches over the lake thursday night ahead of 
a 29.2 inch low moving southeast out of the northern rockies and 
over the canadian prairie for the beginning of the weekend.



lsz162-102100-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 am est mon nov 10 2025 /301 am cst mon nov 10 2025/

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

$$

fzus63 kmqt 100901
glfls 
expires:202511102100;;165118

open lake forecast for lake superior
national weather service marquette mi
401 am est mon nov 10 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...

30.3 inch ridging remains over lake superior this morning, with 30.7 
inch high pressure over the great plains. this evening, a 29.3 inch 
low over northern saskatchewan will begin to erode the ridge over 
lake superior down to 30.1 inches. as the low pushes towards hudson 
bay tuesday, a 29.5 inch trough draped south from the low will push 
over the lake. by wednesday night, the lake will be between 30.1 
inch ridging over the plains and a deep 28.4 inch low over labrador. 
ridging builds to 30.0 inches over the lake thursday night ahead of 
a 29.2 inch low moving southeast out of the northern rockies and 
over the canadian prairie for the beginning of the weekend.



lsz263-102100-
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 mon nov 10 2025

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

$$