fzus63 kmqt 300201
glfls 
expires:202610300800;;940999

open lake forecast for lake superior
national weather service marquette mi
1000 pm 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 30.3 inch high stretching from alberta to the upper mississippi 
valley will shift over the upper great lakes friday afternoon. high 
pressure shifts to the lower great lakes on saturday 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, 
moving to minnesota by tuesday afternoon. this low passes north of 
lake superior through the midweek.




lsz162-300800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1000 pm edt thu oct 29 2026 /900 pm cdt thu oct 29 2026/

.rest of tonight...northwest winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. waves 1 to 3 feet subsiding to calm
to 2 feet. 
.friday...west winds 5 to 15 knots. waves calm to 2 feet. 
.friday night...west winds 5 to 15 knots becoming southwest less
than 10 knots after midnight, then backing south late. waves calm
to 2 feet. 
.saturday...east winds 5 to 15 knots. 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 less than 10 knots increasing to 5 to
15 knots by mid afternoon. waves calm to 2 feet. 
.sunday night...southwest winds less than 10 knots. waves calm to
2 feet. 
.monday...east winds 10 to 20 knots. showers likely. waves
building to 2 to 4 feet. 
.tuesday...east winds 15 to 25 knots becoming northeast 10 to
20 knots. showers likely, then a chance of showers. waves
subsiding to 1 to 3 feet. 

$$

fzus63 kmqt 300201
glfls 
expires:202610300800;;941000

open lake forecast for lake superior
national weather service marquette mi
1000 pm 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 30.3 inch high stretching from alberta to the upper mississippi 
valley will shift over the upper great lakes friday afternoon. high 
pressure shifts to the lower great lakes on saturday 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, 
moving to minnesota by tuesday afternoon. this low passes north of 
lake superior through the midweek.




lsz263-300800-
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 pm edt thu oct 29 2026

.rest of tonight...northwest winds 15 to 25 knots diminishing to
5 to 15 knots. waves 3 to 6 feet occasionally to 8 feet 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 diminishing to less than
10 knots after midnight, then backing south late. waves calm to
2 feet. 
.saturday...south winds less than 10 knots increasing to 5 to
15 knots by mid afternoon. 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...east winds 5 to 15 knots increasing to 10 to 20 knots.
showers likely. waves building to 1 to 3 feet. 
.tuesday...southeast winds 10 to 20 knots. showers likely. waves
building to 2 to 4 feet, then subsiding to 1 to 3 feet. 

$$