fzus63 kmqt 290801
glfls 
expires:202610292000;;900424

open lake forecast for lake superior
national weather service marquette mi
400 am edt thu oct 29 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 29.6 inch low over northeast ontario with a 29.8 inch trough 
extending over lake superior this morning will depart into central 
quebec at 29.4 inches by later this afternoon. 30.2 inch ridging 
will extend over the lake tonight from an elongated area of 30.3 
inch high pressure spanning from the canadian rockies into the upper 
mississippi river valley. high pressure shifts to the great lakes on 
friday and strengthens to 30.4 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 29.5 inch colorado low 
develops on monday and approaches the upper midwest early to mid 
next week.




lsz162-292000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 am edt thu oct 29 2026 /300 am cdt thu oct 29 2026/

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

$$

fzus63 kmqt 290801
glfls 
expires:202610292000;;900425

open lake forecast for lake superior
national weather service marquette mi
400 am edt thu oct 29 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 29.6 inch low over northeast ontario with a 29.8 inch trough 
extending over lake superior this morning will depart into central 
quebec at 29.4 inches by later this afternoon. 30.2 inch ridging 
will extend over the lake tonight from an elongated area of 30.3 
inch high pressure spanning from the canadian rockies into the upper 
mississippi river valley. high pressure shifts to the great lakes on 
friday and strengthens to 30.4 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 29.5 inch colorado low 
develops on monday and approaches the upper midwest early to mid 
next week.




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-
400 am edt thu oct 29 2026

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

$$