fzus63 kmqt 130902
glfls 
expires:202511132100;;332165

open lake forecast for lake superior
national weather service marquette mi
401 am est thu nov 13 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...

30.0 to 30.1 inch ridging becomes widespread over lake superior 
today, but begins to decrease friday as a 29.1 inch low moves into 
manitoba. this system will pull a 29.4 inch trough through lake 
superior saturday. afterwards, ridging will slowly build over the 
lake into next week, eventually reaching 30.0 inches monday. this 
ridge builds to 30.2 inches by late tuesday.



lsz162-132100-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 am est thu nov 13 2025 /301 am cst thu nov 13 2025/

.early this morning...west winds 15 to 25 knots. waves 2 to
4 feet building to 3 to 5 feet occasionally to 7 feet. 
.today...west winds 15 to 25 knots diminishing to 10 to 20 knots.
waves subsiding to 1 to 3 feet. 
.tonight...west winds 5 to 15 knots backing east by midnight.
waves subsiding to calm to 2 feet. 
.friday...southeast winds 5 to 15 knots backing east by mid
afternoon. waves building to 1 to 3 feet, then subsiding to calm
to 2 feet. 
.friday night...south winds 5 to 15 knots veering southwest after
midnight. a slight chance of showers after midnight. waves calm
to 2 feet. 
.saturday...west winds 15 to 25 knots increasing to gales to
35 knots in the afternoon. a chance of rain showers. waves
building to 3 to 6 feet occasionally to 8 feet. 
.saturday night...northwest winds 20 to 30 knots. waves subsiding
to 3 to 5 feet occasionally to 7 feet. 
.sunday...west winds 15 to 25 knots veering northwest. waves
subsiding to calm to 2 feet. 
.monday...northwest winds 10 to 20 knots veering northeast. waves
calm to 2 feet. 

$$

fzus63 kmqt 130902
glfls 
expires:202511132100;;332166

open lake forecast for lake superior
national weather service marquette mi
401 am est thu nov 13 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...

30.0 to 30.1 inch ridging becomes widespread over lake superior 
today, but begins to decrease friday as a 29.1 inch low moves into 
manitoba. this system will pull a 29.4 inch trough through lake 
superior saturday. afterwards, ridging will slowly build over the 
lake into next week, eventually reaching 30.0 inches monday. this 
ridge builds to 30.2 inches by late tuesday.



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-
401 am est thu nov 13 2025

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

$$