fzus63 kmqt 020801
glfls 
expires:202609022000;;764483

open lake forecast for lake superior
national weather service marquette mi
400 am edt wed sep 2 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...

the 

a 29.8 inch low will continue to slowly move east over eastern 
ontario today reaching western quebec by thursday morning. a broad 
29.9 inch trough over the upper great lakes will shift east as the 
low departs ontario tonight and a 29.9 inch ridge will move into the 
area, building to 30.0 inches through friday. ridging will give way 
to another weak trough on saturday night with ridging of 30.1 inches 
building back in for sunday night and monday.




lsz162-022000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 am edt wed sep 2 2026 /300 am cdt wed sep 2 2026/

.early this morning...west winds 5 to 15 knots. waves calm to
2 feet. 
.today...west winds 5 to 15 knots backing south late. waves calm
to 2 feet. 
.tonight...west winds less than 10 knots becoming northeast 5 to
15 knots after midnight. waves calm to 2 feet. 
.thursday...northeast winds 5 to 15 knots becoming east 10 to
20 knots in the afternoon, then becoming northeast 15 to 25 knots
late. a slight chance of showers by mid afternoon. waves building
to 1 to 3 feet. 
.thursday night...northeast winds 10 to 20 knots. a chance of
showers and thunderstorms. waves subsiding to calm to 2 feet,
then building to 1 to 3 feet. 
.friday...east winds 15 to 25 knots backing northeast by mid
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 10 to 20 knots diminishing to 5 to
15 knots. a chance of showers and thunderstorms. waves calm to
2 feet. 
.sunday...east winds 5 to 15 knots becoming northeast 15 to
25 knots. a chance of showers. waves building to 1 to 3 feet. 

$$

fzus63 kmqt 020801
glfls 
expires:202609022000;;764484

open lake forecast for lake superior
national weather service marquette mi
400 am edt wed sep 2 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...

the 

a 29.8 inch low will continue to slowly move east over eastern 
ontario today reaching western quebec by thursday morning. a broad 
29.9 inch trough over the upper great lakes will shift east as the 
low departs ontario tonight and a 29.9 inch ridge will move into the 
area, building to 30.0 inches through friday. ridging will give way 
to another weak trough on saturday night with ridging of 30.1 inches 
building back in for sunday night and monday.




lsz263-022000-
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-
400 am edt wed sep 2 2026

.early this morning...west winds 5 to 15 knots. waves calm to
2 feet. 
.today...west winds 5 to 15 knots backing southwest late. waves
calm to 2 feet. 
.tonight...southwest winds 5 to 15 knots becoming north less than
10 knots after midnight. waves calm to 2 feet. 
.thursday...northeast winds 5 to 15 knots becoming east 15 to
25 knots late. waves calm to 2 feet. 
.thursday night...east winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. a chance of showers and a slight chance
of thunderstorms. waves calm to 2 feet. 
.friday...east winds 10 to 20 knots. waves building to 1 to
3 feet. 
.friday night...east winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. waves subsiding to calm to 2 feet. 
.saturday...east winds 5 to 15 knots. a chance of showers and
thunderstorms. waves calm to 2 feet. 
.sunday...south winds 5 to 15 knots becoming northeast 15 to
25 knots. a chance of showers. waves building to 1 to 3 feet. 

$$