fzus63 kmqt 010201
glfls 
expires:202609010800;;694406

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt mon aug 31 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 continues to move across manitoba and into ontario 
tonight, bringing broad 29.9 inch troughing over the upper great 
lakes. weak troughing remains over the lake until ridging of around 
29.9 inches builds over the lake on wednesday and strengthens to 
30.0 inches through friday. ridging will continue to build to 30.2 
inches by sunday morning as a high pressure center over eastern 
canada moves southward over the weekend.




lsz162-010800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1000 pm edt mon aug 31 2026 /900 pm cdt mon aug 31 2026/

.rest of tonight...southwest winds 5 to 15 knots backing south
after midnight, then veering southwest late. areas of dense fog.
waves calm to 2 feet. 
.tuesday...southwest winds 5 to 15 knots increasing to 15 to
25 knots in the afternoon, then veering west late. waves building
to 1 to 3 feet. 
.tuesday night...west winds 5 to 15 knots veering northwest after
midnight, then backing west late. waves subsiding to calm to
2 feet. 
.wednesday...northwest winds less than 10 knots becoming south
5 to 15 knots by mid afternoon. waves calm to 2 feet. 
.wednesday night...northeast winds 5 to 15 knots. waves calm to
2 feet. 
.thursday...northeast winds 10 to 20 knots increasing to 15 to
25 knots by mid afternoon. waves building to 1 to 3 feet. 
.thursday night...northeast winds 15 to 25 knots diminishing to
10 to 20 knots after midnight. a chance of showers. waves
subsiding to calm to 2 feet. 
.friday...northeast winds 15 to 25 knots increasing to 20 to
30 knots. waves building to 1 to 3 feet, then subsiding to calm
to 2 feet. 
.saturday...northeast winds 10 to 20 knots. waves calm to 2 feet.

$$

fzus63 kmqt 010201
glfls 
expires:202609010800;;694407

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt mon aug 31 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 continues to move across manitoba and into ontario 
tonight, bringing broad 29.9 inch troughing over the upper great 
lakes. weak troughing remains over the lake until ridging of around 
29.9 inches builds over the lake on wednesday and strengthens to 
30.0 inches through friday. ridging will continue to build to 30.2 
inches by sunday morning as a high pressure center over eastern 
canada moves southward over the weekend.




lsz263-010800-
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 mon aug 31 2026

.rest of tonight...southwest winds 5 to 15 knots. areas of dense
fog. waves calm to 2 feet. 
.tuesday...southwest winds 10 to 20 knots increasing to 15 to
25 knots in the afternoon, then veering west late. patchy dense
fog through early afternoon. waves building to 2 to 4 feet, then
subsiding to 1 to 3 feet. 
.tuesday night...west winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. waves subsiding to calm to 2 feet. 
.wednesday...northwest winds 5 to 15 knots backing south by mid
afternoon. a slight chance of showers through early afternoon.
waves calm to 2 feet. 
.wednesday night...east winds 5 to 15 knots diminishing to less
than 10 knots after midnight. waves calm to 2 feet. 
.thursday...east winds 5 to 15 knots increasing to 15 to 25 knots
by mid afternoon. waves calm to 2 feet. 
.thursday night...east winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. waves calm to 2 feet. 
.friday...east winds 15 to 25 knots. waves building to 1 to
3 feet, then subsiding to calm to 2 feet. 
.saturday...east winds 10 to 20 knots veering south. waves calm
to 2 feet. 

$$