fzus63 kmqt 080759
glfls 
expires:202609082000;;099487

open lake forecast for lake superior
national weather service marquette mi
359 am edt tue sep 8 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 moving over the canadian prairies today before 
approaches hudson bay and deepens to 29.1 inches by wednesday 
afternoon. this sends a 29.7 inch trough over the lake tonight and 
wednesday. ridging of 29.9 to 30.0 inches returns on thursday, 
followed by another trough of 29.6 to 29.7 inches friday into 
saturday.




lsz162-082000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
359 am edt tue sep 8 2026 /259 am cdt tue sep 8 2026/

...gale watch in effect from wednesday morning through wednesday
afternoon...

.early this morning...south winds 15 to 25 knots. showers and a
chance of thunderstorms. waves 1 to 3 feet building to 2 to
4 feet. 
.today...south winds 20 to 30 knots. a slight chance of
thunderstorms through early afternoon. a chance of showers. waves
building to 3 to 5 feet occasionally to 7 feet, then subsiding to
1 to 3 feet. 
.tonight...southwest winds 20 to 30 knots veering west after
midnight. waves building to 3 to 5 feet occasionally to 7 feet. 
.wednesday...west gales to 35 knots. waves building to 5 to
8 feet occasionally to 10 feet, then subsiding to 3 to 6 feet
occasionally to 8 feet. 
.wednesday night...west winds 15 to 25 knots diminishing to 10 to
20 knots after midnight. waves subsiding to calm to 2 feet. 
.thursday...west winds 5 to 15 knots backing south by mid
afternoon. waves calm to 2 feet. 
.thursday night...south winds 10 to 20 knots increasing to 15 to
25 knots after midnight. waves building to 1 to 3 feet. 
.friday...south gales to 35 knots veering west. a chance of
showers, then showers likely. waves building to 2 to 4 feet. 
.saturday...west gales to 35 knots diminishing to 20 to 30 knots.
waves building to 3 to 5 feet occasionally to 7 feet, then
subsiding to calm to 2 feet. 

$$

fzus63 kmqt 080759
glfls 
expires:202609082000;;099488

open lake forecast for lake superior
national weather service marquette mi
359 am edt tue sep 8 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 moving over the canadian prairies today before 
approaches hudson bay and deepens to 29.1 inches by wednesday 
afternoon. this sends a 29.7 inch trough over the lake tonight and 
wednesday. ridging of 29.9 to 30.0 inches returns on thursday, 
followed by another trough of 29.6 to 29.7 inches friday into 
saturday.




lsz263-082000-
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-
359 am edt tue sep 8 2026

...gale watch in effect from wednesday morning through wednesday
evening...

.early this morning...south winds 20 to 30 knots. a chance of
showers and a slight chance of thunderstorms. waves 1 to 3 feet
building to 2 to 4 feet. 
.today...south gales to 35 knots diminishing to 20 to 30 knots
late. showers and a slight chance of thunderstorms through early
afternoon, then a slight chance of showers by mid afternoon.
waves building to 3 to 6 feet occasionally to 8 feet, then
subsiding to 2 to 4 feet. 
.tonight...southwest winds 20 to 30 knots increasing to gales to
35 knots after midnight, then veering west late. waves building
to 3 to 6 feet occasionally to 8 feet. 
.wednesday...west gales to 40 knots. waves building to 7 to
11 feet occasionally to 14 feet. 
.wednesday night...west gales to 35 knots becoming northwest
15 to 25 knots after midnight. waves subsiding to 2 to 4 feet. 
.thursday...northwest winds 10 to 20 knots backing southwest by
mid afternoon. waves subsiding to calm to 2 feet. 
.thursday night...south winds 10 to 20 knots increasing to 20 to
30 knots after midnight. waves building to 2 to 4 feet. 
.friday...south gales to 40 knots. a chance of showers, then
showers likely. waves building to 3 to 6 feet occasionally to
8 feet, then subsiding to 2 to 4 feet. 
.saturday...west gales to 40 knots. waves building to 3 to 6 feet
occasionally to 8 feet, then subsiding to 2 to 4 feet. 

$$