fzus63 kmqt 300801
glfls 
expires:202610302000;;955566

open lake forecast for lake superior
national weather service marquette mi
400 am edt fri oct 30 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 30.3 inch high stretching from alberta to the upper great lakes 
this morning will continue building to 30.4 inches over the upper 
great lakes today. high pressure then shifts to the lower great 
lakes by saturday morning and strengthens to 30.5 inches, with 
ridging of around 30.2 inches lingering over lake superior through 
the weekend as the high gradually shifts to the eastern seaboard. a 
29.6 inch colorado low develops on monday and moves into minnesota 
by tuesday morning. this low passes north of lake superior into 
northern ontario tuesday night at 29.5 inches, dragging troughing of 
at least 29.6 inches over the western half of the lake tuesday into 
wednesday.




lsz162-302000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 am edt fri oct 30 2026 /300 am cdt fri oct 30 2026/

.early this morning...northwest 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 south less than
10 knots after midnight. waves calm to 2 feet. 
.saturday...south winds less than 10 knots becoming east 5 to
15 knots in the afternoon. a slight chance of rain showers by mid
afternoon. waves calm to 2 feet. 
.saturday night...east winds 5 to 15 knots becoming southwest
less than 10 knots after midnight. a chance of showers. waves
calm to 2 feet. 
.sunday...southwest winds 5 to 15 knots. waves calm to 2 feet. 
.sunday night...south winds less than 10 knots. waves calm to
2 feet. 
.monday...east winds 10 to 20 knots increasing to 20 to 30 knots.
a chance of showers, then showers. waves building to 3 to 5 feet
occasionally to 7 feet. 
.tuesday...east winds 20 to 30 knots becoming west 15 to
25 knots. showers, then a chance of showers. waves building to
3 to 6 feet occasionally to 8 feet, then subsiding to 1 to
3 feet. 

$$

fzus63 kmqt 300801
glfls 
expires:202610302000;;955567

open lake forecast for lake superior
national weather service marquette mi
400 am edt fri oct 30 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 30.3 inch high stretching from alberta to the upper great lakes 
this morning will continue building to 30.4 inches over the upper 
great lakes today. high pressure then shifts to the lower great 
lakes by saturday morning and strengthens to 30.5 inches, with 
ridging of around 30.2 inches lingering over lake superior through 
the weekend as the high gradually shifts to the eastern seaboard. a 
29.6 inch colorado low develops on monday and moves into minnesota 
by tuesday morning. this low passes north of lake superior into 
northern ontario tuesday night at 29.5 inches, dragging troughing of 
at least 29.6 inches over the western half of the lake tuesday into 
wednesday.




lsz263-302000-
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 fri oct 30 2026

.early this morning...northwest winds 5 to 15 knots. waves 2 to
4 feet subsiding to 1 to 3 feet. 
.today...northwest winds 5 to 15 knots backing west in the
afternoon. waves subsiding to calm to 2 feet. 
.tonight...west winds 5 to 15 knots becoming southwest less than
10 knots late. waves calm to 2 feet. 
.saturday...south winds less than 10 knots backing east late.
waves calm to 2 feet. 
.saturday night...south winds 5 to 15 knots veering southwest
after midnight. a chance of showers. waves calm to 2 feet. 
.sunday...southwest winds 5 to 15 knots. waves calm to 2 feet. 
.sunday night...southwest winds 5 to 15 knots diminishing to less
than 10 knots after midnight. waves calm to 2 feet. 
.monday...southeast winds 5 to 15 knots becoming east 15 to
25 knots. showers likely. waves building to 2 to 4 feet. 
.tuesday...southeast gales to 35 knots becoming southwest 15 to
25 knots. showers likely. waves building to 3 to 6 feet
occasionally to 8 feet, then subsiding to 2 to 4 feet. 

$$