fzus63 kmqt 010802
glfls 
expires:202610012000;;344710

open lake forecast for lake superior
national weather service marquette mi
401 am edt thu oct 1 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...

troughing of around 29.7 inches lingers over eastern lake superior 
this morning between a 29.0 inch hudson bay low and another 29.7 
inch low over the south plains. high pressure builds to 30.2 inches 
over the northern plains tonight into friday before shifting east to 
the great lakes at 30.3 inches friday night and saturday. a weak 
29.9 inch trough crosses lake superior saturday night and sunday, 
with 30.3 inch high pressure quickly returning sunday night into 
monday. 




lsz162-012000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 am edt thu oct 1 2026 /301 am cdt thu oct 1 2026/

.early this morning...northwest winds 10 to 20 knots. waves calm
to 2 feet. 
.today...northwest winds 10 to 20 knots becoming west 15 to
25 knots in the afternoon. waves building to 1 to 3 feet. 
.tonight...northwest winds 15 to 25 knots. waves subsiding to
calm to 2 feet, then building to 1 to 3 feet. 
.friday...northwest winds 15 to 25 knots becoming west 10 to
20 knots in the afternoon, then diminishing to 5 to 15 knots
late. waves subsiding to calm to 2 feet. 
.friday night...southwest winds 5 to 15 knots backing south after
midnight. waves calm to 2 feet. 
.saturday...south winds 5 to 15 knots increasing to 15 to
25 knots by mid afternoon. a chance of showers. waves calm to
2 feet. 
.saturday night...southwest winds 15 to 25 knots veering west
after midnight. waves building to 1 to 3 feet. 
.sunday...northwest winds 15 to 25 knots diminishing to 5 to
15 knots. waves subsiding to calm to 2 feet. 
.monday...northwest winds 5 to 15 knots becoming south 10 to
20 knots. waves building to 1 to 3 feet. 

$$

fzus63 kmqt 010802
glfls 
expires:202610012000;;344711

open lake forecast for lake superior
national weather service marquette mi
401 am edt thu oct 1 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...

troughing of around 29.7 inches lingers over eastern lake superior 
this morning between a 29.0 inch hudson bay low and another 29.7 
inch low over the south plains. high pressure builds to 30.2 inches 
over the northern plains tonight into friday before shifting east to 
the great lakes at 30.3 inches friday night and saturday. a weak 
29.9 inch trough crosses lake superior saturday night and sunday, 
with 30.3 inch high pressure quickly returning sunday night into 
monday. 




lsz263-012000-
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-
401 am edt thu oct 1 2026

.early this morning...north winds 10 to 20 knots. waves calm to
2 feet. 
.today...northwest winds 10 to 20 knots backing west in the
afternoon, then increasing to 15 to 25 knots late. waves building
to 2 to 4 feet. 
.tonight...northwest winds 15 to 25 knots. waves building to 3 to
5 feet occasionally to 7 feet. 
.friday...northwest winds 15 to 25 knots becoming west 10 to
20 knots late. waves building to 3 to 6 feet occasionally to
8 feet, then subsiding to 1 to 3 feet. 
.friday night...west winds 5 to 15 knots backing southwest after
midnight. waves subsiding to calm to 2 feet. 
.saturday...south winds 10 to 20 knots. waves building to 1 to
3 feet, then subsiding to calm to 2 feet. 
.saturday night...south winds 15 to 25 knots becoming west 20 to
30 knots after midnight. a chance of showers. waves building to
3 to 6 feet occasionally to 8 feet. 
.sunday...northwest winds 20 to 30 knots diminishing to 15 to
25 knots. waves subsiding to 1 to 3 feet. 
.monday...northwest winds 5 to 15 knots becoming south 15 to
25 knots. waves subsiding to calm to 2 feet, then building to
2 to 4 feet. 

$$