fzus63 kmqt 291402
glfls 
expires:202510292000;;963683

open lake forecast for lake superior
national weather service marquette mi
1001 am edt wed oct 29 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 30.3 inch ridge over lake superior will wane today and thursday as 
a 29.6 inch low lifts into the mid-atlantic while deepening to 29.5 
inches and a 29.8 inch low moves southeast toward the upper great 
lakes. the downstream low will continue deepening as it absorbs the 
other low, reaching 29.0 inches over maine by friday afternoon while 
extending 29.8 inch troughing west over lake superior. the low 
deepens further to 28.7 inches by saturday morning over the canadian 
maritimes while 30.1 inch ridging builds over lake superior thanks 
to a 30.2 inch high stretching across the central plains. this high 
settles eastward into the midwest at 30.3 inches by sunday while a 
29.3 inch low moves into northern manitoba. this low will pull a 
29.8 inch through through lake superior monday.



lsz162-292000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1001 am edt wed oct 29 2025 /901 am cdt wed oct 29 2025/

.rest of today...northeast winds 5 to 15 knots. waves calm to
2 feet. 
.tonight...northeast winds 5 to 15 knots becoming north less than
10 knots after midnight, then backing northwest late. waves calm
to 2 feet. 
.thursday...northwest winds less than 10 knots backing west in
the afternoon, then becoming southwest 5 to 15 knots late. waves
calm to 2 feet. 
.thursday night...north winds less than 10 knots increasing to
5 to 15 knots after midnight. a slight chance of rain showers
after midnight. waves calm to 2 feet. 
.friday...north winds 5 to 15 knots. a chance of showers. waves
calm to 2 feet. 
.friday night...north winds 5 to 15 knots increasing to 10 to
20 knots after midnight. a chance of rain showers. waves calm to
2 feet. 
.saturday...north winds 5 to 15 knots backing southwest. waves
calm to 2 feet. 
.sunday...southwest winds 20 to 30 knots veering west. a chance
of rain showers. waves building to 3 to 6 feet occasionally to
8 feet, then subsiding to 2 to 4 feet. 

$$

fzus63 kmqt 291402
glfls 
expires:202510292000;;963684

open lake forecast for lake superior
national weather service marquette mi
1001 am edt wed oct 29 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 30.3 inch ridge over lake superior will wane today and thursday as 
a 29.6 inch low lifts into the mid-atlantic while deepening to 29.5 
inches and a 29.8 inch low moves southeast toward the upper great 
lakes. the downstream low will continue deepening as it absorbs the 
other low, reaching 29.0 inches over maine by friday afternoon while 
extending 29.8 inch troughing west over lake superior. the low 
deepens further to 28.7 inches by saturday morning over the canadian 
maritimes while 30.1 inch ridging builds over lake superior thanks 
to a 30.2 inch high stretching across the central plains. this high 
settles eastward into the midwest at 30.3 inches by sunday while a 
29.3 inch low moves into northern manitoba. this low will pull a 
29.8 inch through through lake superior monday.



lsz263-292000-
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-
1001 am edt wed oct 29 2025

.rest of today...southeast winds less than 10 knots backing
northeast in the afternoon, then increasing to 5 to 15 knots
late. waves calm to 2 feet. 
.tonight...northeast winds less than 10 knots veering east after
midnight, then backing northwest late. waves calm to 2 feet. 
.thursday...north winds less than 10 knots backing northwest in
the afternoon. waves calm to 2 feet. 
.thursday night...north winds less than 10 knots increasing to
5 to 15 knots after midnight. a slight chance of showers after
midnight. waves calm to 2 feet. 
.friday...north winds 10 to 20 knots increasing to 15 to 25 knots
by mid afternoon. a chance of rain showers. waves building to
2 to 4 feet. 
.friday night...north winds 15 to 25 knots diminishing to 10 to
20 knots after midnight. waves 2 to 4 feet. 
.saturday...north winds 5 to 15 knots backing southwest. waves
subsiding to calm to 2 feet. 
.sunday...southwest gales to 35 knots veering west. a chance of
rain showers. waves building to 4 to 7 feet occasionally to
9 feet, then subsiding to 3 to 6 feet occasionally to 8 feet. 

$$