fzus63 kmqt 150801
glfls 
expires:202606152000;;775992

open lake forecast for lake superior
national weather service marquette mi
400 am edt mon jun 15 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... 

weak 29.8 inch ridging over the lake this morning gives way to a 
29.6 inch trough moving through this evening into tuesday. this 
trough will deepen into a 29.5 inch low over northeast wisconsin 
tuesday. this low will then slowly move east-northeast into ontario 
through wednesday morning. a low of 29.4 inches then moves through 
the great lakes region wednesday night and thursday. 




lsz162-152000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 am edt mon jun 15 2026 /300 am cdt mon jun 15 2026/

.early this morning...west winds 10 to 20 knots. waves calm to
2 feet. 
.today...southwest winds 15 to 25 knots. a chance of showers and
a slight chance of thunderstorms by mid afternoon. waves building
to 3 to 5 feet occasionally to 7 feet, then subsiding to 2 to
4 feet. 
.tonight...southwest winds 10 to 20 knots diminishing to 5 to
15 knots after midnight, then veering north late. a slight chance
of thunderstorms through midnight. a chance of rain showers.
waves subsiding to calm to 2 feet. 
.tuesday...northeast winds 5 to 15 knots veering east in the
afternoon, then veering southwest late. a slight chance of
showers through early afternoon. waves calm to 2 feet. 
.tuesday night...south winds 5 to 15 knots diminishing to less
than 10 knots after midnight. waves calm to 2 feet. 
.wednesday...east winds 5 to 15 knots increasing to 10 to
20 knots by mid afternoon. a chance of rain showers. waves
building to 1 to 3 feet. 
.wednesday night...northeast winds 15 to 25 knots becoming north
10 to 20 knots after midnight. a chance of rain showers. waves
building to 2 to 4 feet, then subsiding to 1 to 3 feet. 
.thursday...west winds 10 to 20 knots. waves subsiding to calm to
2 feet. 
.friday...west winds 10 to 20 knots diminishing to 5 to 15 knots.
waves calm to 2 feet. 

$$

fzus63 kmqt 150801
glfls 
expires:202606152000;;775993

open lake forecast for lake superior
national weather service marquette mi
400 am edt mon jun 15 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... 

weak 29.8 inch ridging over the lake this morning gives way to a 
29.6 inch trough moving through this evening into tuesday. this 
trough will deepen into a 29.5 inch low over northeast wisconsin 
tuesday. this low will then slowly move east-northeast into ontario 
through wednesday morning. a low of 29.4 inches then moves through 
the great lakes region wednesday night and thursday. 




lsz263-152000-
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 am edt mon jun 15 2026

.early this morning...west winds 10 to 20 knots. waves 1 to
3 feet. 
.today...southwest winds 15 to 25 knots. a slight chance of
showers and thunderstorms by mid afternoon. waves building to
3 to 6 feet occasionally to 8 feet. 
.tonight...southwest winds 10 to 20 knots diminishing to 5 to
15 knots after midnight, then backing northeast late. a slight
chance of thunderstorms through midnight. a slight chance of rain
showers. waves subsiding to calm to 2 feet. 
.tuesday...northeast winds 5 to 15 knots veering southwest late.
a chance of rain showers through early afternoon. waves calm to
2 feet. 
.tuesday night...southwest winds 5 to 15 knots becoming south
less than 10 knots after midnight. waves calm to 2 feet. 
.wednesday...south winds 5 to 15 knots backing east by mid
afternoon. a chance of rain showers by mid afternoon. waves calm
to 2 feet. 
.wednesday night...northeast winds 10 to 20 knots. a chance of
rain showers. waves building to 2 to 4 feet, then subsiding to
1 to 3 feet. 
.thursday...west winds 5 to 15 knots. waves subsiding to calm to
2 feet. 
.friday...west winds 10 to 20 knots diminishing to 5 to 15 knots.
waves building to 1 to 3 feet, then subsiding to calm to 2 feet. 

$$