fzus63 kmqt 031401
glfls 
expires:202609032000;;834419

open lake forecast for lake superior
national weather service marquette mi
1000 am edt thu sep 3 2026

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 29.9 inch ridge extends over lake superior today from a 30.2 inch 
high over hudson bay. the ridge over the lake will gradually 
strengthen 30.1 inches through this weekend as a 29.8 inch low over 
quebec shifts east towards nova scotia and deepens to 29.5 inches. 
ridging builds to 30.2 inches over the lake by early next week as 
high pressure over hudson bay strengthens to 30.4 inches. broad 
troughing of 29.5 to 29.6 inches will persist over the rockies and 
northern plains through the period.




lsz162-032000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1000 am edt thu sep 3 2026 /900 am cdt thu sep 3 2026/

.rest of today...northeast winds 10 to 20 knots becoming east
15 to 25 knots in the afternoon, then becoming northeast 20 to
30 knots late. waves calm to 2 feet building to 2 to 4 feet. 
.tonight...east winds 15 to 25 knots becoming northeast 10 to
20 knots after midnight. a slight chance of showers and
thunderstorms. waves subsiding to 1 to 3 feet. 
.friday...northeast winds 15 to 25 knots increasing to 20 to
30 knots late. a slight chance of showers through early
afternoon. waves building to 2 to 4 feet. 
.friday night...northeast winds 15 to 25 knots diminishing to
5 to 15 knots after midnight. waves subsiding to calm to 2 feet. 
.saturday...northeast winds 5 to 15 knots increasing to 10 to
20 knots by mid afternoon. waves calm to 2 feet. 
.saturday night...northeast winds 5 to 15 knots. waves calm to
2 feet. 
.sunday...east winds 5 to 15 knots becoming northeast 10 to
20 knots. a chance of showers and thunderstorms. waves calm to
2 feet. 
.monday...east gales to 35 knots. a chance of showers. showers
likely. waves building to 4 to 7 feet occasionally to 9 feet. 

$$

fzus63 kmqt 031401
glfls 
expires:202609032000;;834420

open lake forecast for lake superior
national weather service marquette mi
1000 am edt thu sep 3 2026

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 29.9 inch ridge extends over lake superior today from a 30.2 inch 
high over hudson bay. the ridge over the lake will gradually 
strengthen 30.1 inches through this weekend as a 29.8 inch low over 
quebec shifts east towards nova scotia and deepens to 29.5 inches. 
ridging builds to 30.2 inches over the lake by early next week as 
high pressure over hudson bay strengthens to 30.4 inches. broad 
troughing of 29.5 to 29.6 inches will persist over the rockies and 
northern plains through the period.




lsz263-032000-
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-
1000 am edt thu sep 3 2026

.rest of today...northeast winds 5 to 15 knots increasing to
10 to 20 knots in the afternoon, then becoming east 20 to
30 knots late. waves calm to 2 feet building to 1 to 3 feet. 
.tonight...east winds 15 to 25 knots diminishing to 10 to
20 knots after midnight. a slight chance of showers and
thunderstorms. patchy fog after midnight. waves subsiding to calm
to 2 feet. 
.friday...east winds 10 to 20 knots increasing to 15 to 25 knots
in the afternoon. waves building to 2 to 4 feet. 
.friday night...east winds 15 to 25 knots diminishing to 5 to
15 knots after midnight. a slight chance of showers through
midnight. waves subsiding to calm to 2 feet. 
.saturday...east winds 5 to 15 knots backing northeast by mid
afternoon. waves calm to 2 feet. 
.saturday night...east winds 5 to 15 knots veering southeast
after midnight. waves calm to 2 feet. 
.sunday...east winds 5 to 15 knots increasing to 15 to 25 knots.
a chance of showers. waves building to 1 to 3 feet. 
.monday...east winds 20 to 30 knots veering southeast. a chance
of showers. showers likely. waves building to 4 to 7 feet
occasionally to 9 feet. 

$$