fzus63 kmqt 220909 cca
glfls 
expires:202511222100;;298930

open lake forecast for lake superior...corrected
national weather service marquette mi
409 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.



lsz162-222100-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
409 am est sat nov 22 2025 /309 am cst sat nov 22 2025/

.early this morning...south winds 5 to 15 knots. waves calm to
2 feet. 
.today...south winds 10 to 20 knots becoming southwest 15 to
25 knots by late morning, then veering west by mid afternoon. a
slight chance of snow showers in the morning. a slight chance of
rain showers. waves building to 3 to 5 feet occasionally to
7 feet. 
.tonight...west winds 20 to 30 knots diminishing to 15 to
25 knots by midnight. waves subsiding to 2 to 4 feet, then
building to 3 to 5 feet occasionally to 7 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. 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 220909 cca
glfls 
expires:202511222100;;298931

open lake forecast for lake superior...corrected
national weather service marquette mi
409 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.



lsz263-222100-
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-
409 am est sat nov 22 2025

.early this morning...south winds 5 to 15 knots. waves calm to
2 feet. 
.today...south winds 5 to 15 knots increasing to 10 to 20 knots
by late morning, then becoming west 15 to 25 knots by mid
afternoon. a chance of snow showers in the morning. a chance of
rain showers. snow showers likely in the afternoon. waves
building to 3 to 5 feet occasionally to 7 feet. 
.tonight...west winds 15 to 25 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 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. 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. 

$$