fzus63 kmqt 052102
glfls 
expires:202511060900;;907540

open lake forecast for lake superior
national weather service marquette mi
401 pm est wed nov 5 2025

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 30.2 inch high pressure will build into the upper mississippi 
valley tonight, extending a 30.1 inch ridge north over lake 
superior. on thursday a 29.6 inch low will move from the northern 
plains into mn, deepening to 29.3 inches as it moves over lake 
superior on friday morning. as the low pushes into central quebec 
saturday, weak 29.9 inch ridging will be over the lake. saturday 
night into sunday, a low of at least 29.6 inches will quickly pass 
south of lake michigan towards the lower great lakes while high 
pressure of at least 30.6 inches builds over the northern plains. 
the low will lift north into quebec on monday, with lake superior 
remaining between the 29.4 inch low and 30.6 inch high.



lsz162-060900-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 pm est wed nov 5 2025 /301 pm cst wed nov 5 2025/

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

$$

fzus63 kmqt 052102
glfls 
expires:202511060900;;907541

open lake forecast for lake superior
national weather service marquette mi
401 pm est wed nov 5 2025

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 30.2 inch high pressure will build into the upper mississippi 
valley tonight, extending a 30.1 inch ridge north over lake 
superior. on thursday a 29.6 inch low will move from the northern 
plains into mn, deepening to 29.3 inches as it moves over lake 
superior on friday morning. as the low pushes into central quebec 
saturday, weak 29.9 inch ridging will be over the lake. saturday 
night into sunday, a low of at least 29.6 inches will quickly pass 
south of lake michigan towards the lower great lakes while high 
pressure of at least 30.6 inches builds over the northern plains. 
the low will lift north into quebec on monday, with lake superior 
remaining between the 29.4 inch low and 30.6 inch high.



lsz263-060900-
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 pm est wed nov 5 2025

.late this afternoon...northwest winds 20 to 30 knots. waves 4 to
7 feet occasionally to 9 feet. 
.tonight...northwest winds 20 to 30 knots diminishing to 5 to
15 knots. waves subsiding to calm to 2 feet. 
.thursday...west winds 5 to 15 knots backing southwest by late
morning, then becoming south 10 to 20 knots by mid afternoon. a
slight chance of rain showers in the afternoon. waves building to
1 to 3 feet. 
.thursday night...southeast winds 15 to 25 knots becoming south
10 to 20 knots by midnight, then veering west late. rain showers
likely in the evening, then a chance of rain showers after
midnight. waves building to 2 to 4 feet, then subsiding to 1 to
3 feet. 
.friday...north gales to 35 knots. rain showers likely in the
morning. a chance of snow showers. a chance of rain showers in
the afternoon. waves building to 5 to 9 feet occasionally to
11 feet. 
.friday night...north winds 20 to 30 knots diminishing to 5 to
15 knots after midnight. waves subsiding to calm to 2 feet. 
.saturday...northwest winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon. waves calm to 2 feet. 
.saturday night...northwest winds 15 to 25 knots becoming north
20 to 30 knots after midnight. a chance of snow showers. waves
building to 3 to 6 feet occasionally to 8 feet. 
.sunday...north gales to 35 knots. a chance of snow showers.
waves building to 4 to 8 feet occasionally to 10 feet. 
.monday...northwest winds 20 to 30 knots becoming west 15 to
25 knots. waves subsiding to 2 to 4 feet. 

$$