fzus63 kmqt 130900
glfls 
expires:202611132100;;740760

open lake forecast for lake superior
national weather service marquette mi
400 am est fri nov 13 2026

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 30.3 inch high pressure over western ontario slowly shifts 
southeast and expands towards the southern u.s. today. this high 
continues to shift southeast, expand and build through the weekend, 
centered over the ohio river valley at 30.5 inches by monday 
afternoon. on wednesday a 29.6 inch low pressure will move from the 
rockies to the dakotas, with lake superior between this low and the 
high pressure centered over the mid-atlantic states at 30.4 inches.




lsz162-132100-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 am est fri nov 13 2026 /300 am cst fri nov 13 2026/

.early this morning...north winds 10 to 20 knots. waves 2 to
4 feet. 
.today...north winds 10 to 20 knots diminishing to 5 to 15 knots.
a slight chance of snow showers. waves subsiding to 1 to 3 feet. 
.tonight...north winds 5 to 15 knots backing northwest late.
waves subsiding to calm to 2 feet. 
.saturday...northwest winds 5 to 15 knots backing west by mid
afternoon. waves calm to 2 feet. 
.saturday night...west winds less than 10 knots increasing to
5 to 15 knots after midnight. waves calm to 2 feet. 
.sunday...southwest winds 5 to 15 knots. waves calm to 2 feet. 
.sunday night...southwest winds 10 to 20 knots increasing to
15 to 25 knots after midnight. waves building to 3 to 5 feet
occasionally to 7 feet. 
.monday...southwest winds 20 to 30 knots. waves building to 4 to
7 feet occasionally to 9 feet. 
.tuesday...southwest winds 20 to 30 knots diminishing to 15 to
25 knots. waves subsiding to 2 to 4 feet. 

$$

fzus63 kmqt 130900
glfls 
expires:202611132100;;740761

open lake forecast for lake superior
national weather service marquette mi
400 am est fri nov 13 2026

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 30.3 inch high pressure over western ontario slowly shifts 
southeast and expands towards the southern u.s. today. this high 
continues to shift southeast, expand and build through the weekend, 
centered over the ohio river valley at 30.5 inches by monday 
afternoon. on wednesday a 29.6 inch low pressure will move from the 
rockies to the dakotas, with lake superior between this low and the 
high pressure centered over the mid-atlantic states at 30.4 inches.




lsz263-132100-
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-
400 am est fri nov 13 2026

.early this morning...north winds 10 to 20 knots. a chance of
snow showers. waves 3 to 6 feet occasionally to 8 feet. 
.today...north winds 10 to 20 knots. a chance of snow showers. a
slight chance of rain showers in the afternoon. waves subsiding
to 2 to 4 feet. 
.tonight...north winds 10 to 20 knots diminishing to 5 to
15 knots by midnight. waves subsiding to calm to 2 feet. 
.saturday...north winds 5 to 15 knots becoming northwest less
than 10 knots by mid afternoon. waves calm to 2 feet. 
.saturday night...northwest winds less than 10 knots backing west
after midnight. waves calm to 2 feet. 
.sunday...west winds 5 to 15 knots becoming southwest 10 to
20 knots in the afternoon. waves calm to 2 feet. 
.sunday night...southwest winds 10 to 20 knots increasing to
15 to 25 knots after midnight. waves building to 3 to 6 feet
occasionally to 8 feet. 
.monday...southwest gales to 35 knots. waves building to 5 to
8 feet occasionally to 10 feet. 
.tuesday...southwest gales to 35 knots diminishing to 15 to
25 knots. waves subsiding to 3 to 6 feet occasionally to 8 feet. 

$$