fzus63 kmqt 221523
glfls 
expires:202511222330;;313147

open lake forecast for lake superior
national weather service marquette mi
1023 am est sat nov 22 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...

weak 30.0 inch ridging over the lake early this morning breaks down 
today as a 29.8 inch trough moves over lake superior in the 
afternoon and evening. 30.0 inch ridging follows sunday into monday. 
troughing of at least 29.7 inches begins to organize in the plains 
monday, then moves into the great lakes tuesday through wednesday, 
remaining in the vicinity thursday.



lsz162-222330-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1023 am est sat nov 22 2025 /923 am cst sat nov 22 2025/

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

$$

fzus63 kmqt 221523
glfls 
expires:202511222330;;313148

open lake forecast for lake superior
national weather service marquette mi
1023 am est sat nov 22 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...

weak 30.0 inch ridging over the lake early this morning breaks down 
today as a 29.8 inch trough moves over lake superior in the 
afternoon and evening. 30.0 inch ridging follows sunday into monday. 
troughing of at least 29.7 inches begins to organize in the plains 
monday, then moves into the great lakes tuesday through wednesday, 
remaining in the vicinity thursday.



lsz263-222330-
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-
1023 am est sat nov 22 2025

.rest of today...south winds 10 to 20 knots increasing to 15 to
25 knots by late morning, then veering southwest by mid
afternoon. a chance of snow showers late in the morning. a chance
of rain showers. snow showers likely in the afternoon. waves calm
to 2 feet building to 3 to 5 feet occasionally to 7 feet. 
.tonight...west winds 20 to 30 knots veering northwest by
midnight. waves building to 4 to 7 feet occasionally to 9 feet,
then subsiding to 3 to 6 feet occasionally to 8 feet. 
.sunday...west winds 15 to 25 knots diminishing to 10 to 20 knots
by late morning, then backing southwest by mid afternoon. waves
subsiding to 1 to 3 feet. 
.sunday night...southwest winds 5 to 15 knots. waves subsiding to
calm to 2 feet. 
.monday...southwest winds 5 to 15 knots backing south in the
afternoon. a slight chance of rain showers in the afternoon.
waves calm to 2 feet. 
.monday night...southeast winds 5 to 15 knots. rain showers
likely. waves calm to 2 feet. 
.tuesday...east winds 15 to 25 knots becoming west gales to
35 knots. rain showers likely. a chance of snow showers. waves
building to 6 to 9 feet occasionally to 11 feet. 
.wednesday...northwest gales to 40 knots. snow showers likely,
then a chance of snow showers. waves building to 6 to 10 feet
occasionally to 13 feet. 

$$