fzus63 kmqt 102102
glfls 
expires:202511110900;;194362

open lake forecast for lake superior
national weather service marquette mi
401 pm 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...

a 29.3 inch low over northern saskatchewan will begin to erode the 
ridge over lake superior down to 30.1 inches this evening. 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.



lsz162-110900-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 pm est mon nov 10 2025 /301 pm cst mon nov 10 2025/

.late this afternoon...west winds 5 to 15 knots. waves 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 increasing to 30 knots
with a few gale force gusts to 35 knots possible late. a slight
chance of rain showers. waves building to 3 to 6 feet
occasionally to 8 feet. 
.wednesday...west winds 20 to 30 knots. waves subsiding to 3 to
5 feet occasionally to 7 feet. 
.wednesday night...west winds 15 to 25 knots diminishing to 10 to
20 knots after midnight. waves subsiding to 1 to 3 feet. 
.thursday...west winds 10 to 20 knots. waves subsiding to calm to
2 feet. 
.thursday night...west winds 5 to 15 knots backing east after
midnight. waves calm to 2 feet. 
.friday...east winds 10 to 20 knots becoming southeast 15 to
25 knots. waves building to 3 to 5 feet occasionally to 7 feet. 
.saturday...southeast winds 15 to 25 knots veering west. a chance
of rain showers. waves subsiding to 1 to 3 feet. 

$$

fzus63 kmqt 102102
glfls 
expires:202511110900;;194363

open lake forecast for lake superior
national weather service marquette mi
401 pm 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...

a 29.3 inch low over northern saskatchewan will begin to erode the 
ridge over lake superior down to 30.1 inches this evening. 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.



lsz263-110900-
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 pm est mon nov 10 2025

...gale watch in effect from late tuesday night through late
wednesday night...

.late this afternoon...northwest winds 5 to 15 knots. waves 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
slight chance of snow showers 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 by mid
afternoon. a chance of rain and snow showers. waves building to
4 to 7 feet occasionally to 9 feet, then subsiding to 3 to 6 feet
occasionally to 8 feet. 
.tuesday night...west winds 20 to 30 knots becoming northwest
gales to 35 knots late. a chance of rain showers. waves building
to 7 to 10 feet occasionally to 13 feet. 
.wednesday...northwest gales to 35 knots backing west in the
afternoon. a slight chance of rain showers in the morning. waves
building to 8 to 11 feet occasionally to 14 feet, then subsiding
to 6 to 9 feet occasionally to 11 feet. 
.wednesday night...west winds 20 to 30 knots diminishing to 15 to
25 knots after midnight. waves subsiding to 3 to 6 feet
occasionally to 8 feet. 
.thursday...west winds 15 to 25 knots. waves subsiding to 2 to
4 feet. 
.thursday night...west winds 10 to 20 knots becoming east 5 to
15 knots after midnight. waves subsiding to calm to 2 feet. 
.friday...east winds 15 to 25 knots becoming southeast 20 to
30 knots. waves building to 4 to 7 feet occasionally to 9 feet. 
.saturday...southeast winds 20 to 30 knots becoming south 15 to
25 knots. a chance of rain showers. waves building to 5 to 8 feet
occasionally to 10 feet, then subsiding to 3 to 5 feet
occasionally to 7 feet. 

$$