fzus63 kmqt 042101
glfls 
expires:202611050900;;266801

open lake forecast for lake superior
national weather service marquette mi
400 pm est wed nov 4 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 29.5 inch low lifts along the minnesota/wisconsin state line this 
morning before trekking northeast over lake superior through 
tomorrow. high pressure ridging of 30.2 inches returns from the 
northwest through friday, weakening to 30.1 inches on saturday as it 
shifts southeast ahead of a clipper low pressure system.




lsz162-050900-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 pm est wed nov 4 2026 /300 pm cst wed nov 4 2026/

.late this afternoon...north winds 10 to 20 knots. patchy fog. a
chance of showers. waves 2 to 4 feet. 
.tonight...north winds 15 to 25 knots increasing to 30 knots with
a few gale force gusts to 35 knots possible. patchy fog in the
evening. showers. waves building to 5 to 8 feet occasionally to
10 feet. 
.thursday...north winds to 30 knots with a few gale force gusts
to 35 knots possible diminishing to 20 to 30 knots. a chance of
rain showers in the morning. waves building to 5 to 9 feet
occasionally to 11 feet. 
.thursday night...north winds 20 to 30 knots diminishing to 10 to
20 knots. waves subsiding to 3 to 5 feet occasionally to 7 feet. 
.friday...north winds 5 to 15 knots diminishing to less than
10 knots in the afternoon. waves subsiding to calm to 2 feet. 
.friday night...southwest winds less than 10 knots increasing to
5 to 15 knots after midnight. waves calm to 2 feet. 
.saturday...southwest winds 10 to 20 knots. waves building to
2 to 4 feet. 
.saturday night...west winds 15 to 25 knots. waves 2 to 4 feet. 
.sunday...west winds 15 to 25 knots diminishing to 5 to 15 knots.
waves subsiding to calm to 2 feet. 
.monday...southwest winds 15 to 25 knots veering west. waves
building to 2 to 4 feet, then subsiding to 1 to 3 feet. 

$$

fzus63 kmqt 042101
glfls 
expires:202611050900;;266802

open lake forecast for lake superior
national weather service marquette mi
400 pm est wed nov 4 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 29.5 inch low lifts along the minnesota/wisconsin state line this 
morning before trekking northeast over lake superior through 
tomorrow. high pressure ridging of 30.2 inches returns from the 
northwest through friday, weakening to 30.1 inches on saturday as it 
shifts southeast ahead of a clipper low pressure system.




lsz263-050900-
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 pm est wed nov 4 2026

...gale warning in effect from 4 am est thursday through thursday
evening...

.late this afternoon...north winds 10 to 20 knots. patchy fog. a
chance of showers. waves 2 to 4 feet. 
.tonight...north winds 15 to 25 knots increasing to gales to
40 knots by midnight. patchy fog in the evening. a chance of
showers in the evening, then showers after midnight. waves
building to 8 to 11 feet occasionally to 14 feet. 
.thursday...north gales to 40 knots. a chance of rain showers.
waves building to 10 to 14 feet occasionally to 18 feet, then
subsiding to 8 to 11 feet occasionally to 14 feet. 
.thursday night...north winds 20 to 30 knots diminishing to 15 to
25 knots late. a slight chance of rain showers in the evening.
waves subsiding to 4 to 7 feet occasionally to 9 feet. 
.friday...north winds 10 to 20 knots diminishing to 5 to 15 knots
in the afternoon. waves subsiding to calm to 2 feet. 
.friday night...west winds less than 10 knots increasing to 5 to
15 knots after midnight. waves calm to 2 feet. 
.saturday...southwest winds 10 to 20 knots increasing to 15 to
25 knots in the afternoon. waves building to 2 to 4 feet. 
.saturday night...southwest winds 15 to 25 knots veering west
after midnight. waves building to 4 to 7 feet occasionally to
9 feet. 
.sunday...west winds 20 to 30 knots diminishing to 10 to
20 knots. waves subsiding to calm to 2 feet. 
.monday...southwest winds 15 to 25 knots veering west. waves
building to 3 to 5 feet occasionally to 7 feet. 

$$