fzus63 kmqt 050302
glfls 
expires:202511050900;;866004

open lake forecast for lake superior
national weather service marquette mi
1001 pm est tue nov 4 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 29.9 inch low deepens to 29.7 inches through wednesday morning as 
it transits across lake michigan. as the low further deepens to 29.5 
inches over the lower great lakes wednesday evening, 30.2 inch high 
pressure moves over the upper mississippi valley. this high builds 
to 30.3 inches just south of the great lakes thursday. by thursday 
evening, as the high continues pushing east, a 29.6 inch low 
pressure will develop over the dakotas, reaching 29.4 inches in the 
vicnity of lake superior friday morning. the low deepens further to 
29.3 inches over the ontario/quebec line friday evening. with the 
low pushing 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.



lsz162-050900-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1001 pm est tue nov 4 2025 /901 pm cst tue nov 4 2025/

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

$$

fzus63 kmqt 050302
glfls 
expires:202511050900;;866005

open lake forecast for lake superior
national weather service marquette mi
1001 pm est tue nov 4 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 29.9 inch low deepens to 29.7 inches through wednesday morning as 
it transits across lake michigan. as the low further deepens to 29.5 
inches over the lower great lakes wednesday evening, 30.2 inch high 
pressure moves over the upper mississippi valley. this high builds 
to 30.3 inches just south of the great lakes thursday. by thursday 
evening, as the high continues pushing east, a 29.6 inch low 
pressure will develop over the dakotas, reaching 29.4 inches in the 
vicnity of lake superior friday morning. the low deepens further to 
29.3 inches over the ontario/quebec line friday evening. with the 
low pushing 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.



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-
1001 pm est tue nov 4 2025

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

$$