fzus63 kmqt 241458
glfls 
expires:202511242100;;425582

open lake forecast for lake superior
national weather service marquette mi
958 am est mon nov 24 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 29.8 inch trough over minnesota this morning moves over the lake 
today. tonight into tuesday, a 29.8 inch low will organize just west 
of the great lakes, deepening to 29.6 inches tuesday night over the 
upper peninsula and passing over eastern lake superior at 29.3 
inches wednesday. this low deepens further to 29.2 inches over 
quebec thursday while 30.5 inch high pressure builds over the 
northern great plains. this high moves over lake superior friday 
into the weekend.



lsz162-242100-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
958 am est mon nov 24 2025 /858 am cst mon nov 24 2025/

...gale watch in effect from tuesday evening through thursday
morning...

.rest of today...west winds 10 to 20 knots diminishing to 5 to
15 knots. waves 2 to 4 feet subsiding to calm to 2 feet. 
.tonight...north winds 5 to 15 knots becoming northeast 10 to
20 knots by midnight, then veering east late. a slight chance of
rain after midnight. waves building to 2 to 4 feet. 
.tuesday...northeast winds 15 to 25 knots increasing to 20 to
30 knots. rain. snow in the afternoon. waves building to 6 to
9 feet occasionally to 11 feet. 
.tuesday night...northeast gales to 35 knots becoming north gales
to 40 knots after midnight. rain in the evening. snow. a slight
chance of rain after midnight. waves building to 10 to 14 feet
occasionally to 18 feet. 
.wednesday...north gales to 40 knots backing northwest in the
afternoon. snow. waves subsiding to 9 to 12 feet occasionally to
15 feet, then building to 10 to 14 feet occasionally to 18 feet. 
.wednesday night...northwest gales to 35 knots. a chance of snow
showers. waves subsiding to 5 to 8 feet occasionally to 10 feet. 
.thursday...northwest gales to 35 knots diminishing to 15 to
25 knots. waves subsiding to 1 to 3 feet. 
.friday...northwest winds 10 to 20 knots diminishing to 5 to
15 knots. waves subsiding to calm to 2 feet. 

$$

fzus63 kmqt 241458
glfls 
expires:202511242100;;425583

open lake forecast for lake superior
national weather service marquette mi
958 am est mon nov 24 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 29.8 inch trough over minnesota this morning moves over the lake 
today. tonight into tuesday, a 29.8 inch low will organize just west 
of the great lakes, deepening to 29.6 inches tuesday night over the 
upper peninsula and passing over eastern lake superior at 29.3 
inches wednesday. this low deepens further to 29.2 inches over 
quebec thursday while 30.5 inch high pressure builds over the 
northern great plains. this high moves over lake superior friday 
into the weekend.



lsz263-242100-
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-
958 am est mon nov 24 2025

...gale watch in effect from tuesday evening through thursday
morning...

.rest of today...southwest winds 10 to 20 knots veering west by
late morning, then diminishing to 5 to 15 knots by mid afternoon.
waves 3 to 5 feet occasionally to 7 feet subsiding to 1 to
3 feet. 
.tonight...north winds 5 to 15 knots veering east late. waves
subsiding to calm to 2 feet, then building to 1 to 3 feet. 
.tuesday...northeast winds 10 to 20 knots increasing to 20 to
30 knots. a chance of rain in the morning, then rain, possibly
mixed with snow in the afternoon. waves building to 6 to 9 feet
occasionally to 11 feet. 
.tuesday night...northeast gales to 40 knots becoming north gales
to 45 knots after midnight. rain in the evening. snow. a slight
chance of rain after midnight. waves building to 12 to 17 feet
occasionally to 21 feet. 
.wednesday...north gales to 45 knots. snow. waves subsiding to
10 to 14 feet occasionally to 18 feet. 
.wednesday night...northwest gales to 40 knots. snow showers
likely in the evening, then a chance of snow showers after
midnight. waves subsiding to 8 to 11 feet occasionally to
14 feet. 
.thursday...northwest gales to 35 knots diminishing to 20 to
30 knots. a chance of snow showers. waves subsiding to 3 to
6 feet occasionally to 8 feet. 
.friday...northwest winds 10 to 20 knots diminishing to 5 to
15 knots. waves subsiding to calm to 2 feet. 

$$