fzus63 kmqt 191401
glfls 
expires:202609192000;;711145

open lake forecast for lake superior
national weather service marquette mi
1001 am edt sat sep 19 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...

this morning, 30.3 inch high pressure is moving into western quebec, 
and is expected to weaken to 30.2 inches by the afternoon. 
meanwhile, broad 29.9 inch low pressure is stretched out over the 
central plains, while a 29.8 inch low tracks across hudson bay. into 
sunday, a 30.2 inch high over the canadian prairie builds to 30.4 
inches as it moves into northwestern ontario. this high pressure 
center slowly builds to 30.5 inches as it shifts into quebec by 
midday tuesday, trailing a 30.4 inch ridge over lake superior. the 
high builds further to 30.6 inches wednesday as it progresses 
eastward.




lsz162-192000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1001 am edt sat sep 19 2026 /901 am cdt sat sep 19 2026/

.rest of today...east winds 5 to 15 knots backing northeast in
the afternoon, then veering east late. waves calm to 2 feet. 
.tonight...northeast winds 5 to 15 knots backing north after
midnight, then becoming northeast 15 to 25 knots late. waves
building to 1 to 3 feet. 
.sunday...northeast winds 20 to 30 knots veering east late. waves
building to 4 to 7 feet occasionally to 9 feet, then subsiding to
3 to 6 feet occasionally to 8 feet. 
.sunday night...east winds 15 to 25 knots diminishing to 10 to
20 knots after midnight. waves subsiding to calm to 2 feet. 
.monday...east winds 10 to 20 knots increasing to 15 to 25 knots
by mid afternoon. waves building to 1 to 3 feet. 
.monday night...east winds 15 to 25 knots diminishing to 5 to
15 knots after midnight. waves subsiding to calm to 2 feet. 
.tuesday...east winds 10 to 20 knots. waves calm to 2 feet. 
.wednesday...east winds 10 to 20 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 191401
glfls 
expires:202609192000;;711146

open lake forecast for lake superior
national weather service marquette mi
1001 am edt sat sep 19 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...

this morning, 30.3 inch high pressure is moving into western quebec, 
and is expected to weaken to 30.2 inches by the afternoon. 
meanwhile, broad 29.9 inch low pressure is stretched out over the 
central plains, while a 29.8 inch low tracks across hudson bay. into 
sunday, a 30.2 inch high over the canadian prairie builds to 30.4 
inches as it moves into northwestern ontario. this high pressure 
center slowly builds to 30.5 inches as it shifts into quebec by 
midday tuesday, trailing a 30.4 inch ridge over lake superior. the 
high builds further to 30.6 inches wednesday as it progresses 
eastward.




lsz263-192000-
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 am edt sat sep 19 2026

.rest of today...southeast winds 5 to 15 knots backing northeast
late. waves calm to 2 feet. 
.tonight...east winds 5 to 15 knots becoming north 10 to 20 knots
after midnight, then becoming northeast 15 to 25 knots late. a
slight chance of showers. waves building to 2 to 4 feet. 
.sunday...northeast winds 15 to 25 knots increasing to 20 to
30 knots in the afternoon. waves building to 4 to 7 feet
occasionally to 9 feet, then subsiding to 3 to 6 feet
occasionally to 8 feet. 
.sunday night...east winds 15 to 25 knots diminishing to 5 to
15 knots after midnight. waves subsiding to calm to 2 feet. 
.monday...east winds 5 to 15 knots increasing to 15 to 25 knots
by mid afternoon. waves building to 1 to 3 feet. 
.monday night...east winds 15 to 25 knots diminishing to 5 to
15 knots after midnight. waves subsiding to calm to 2 feet. 
.tuesday...east winds 10 to 20 knots veering southeast. waves
calm to 2 feet. 
.wednesday...southeast winds 10 to 20 knots becoming south 5 to
15 knots. waves calm to 2 feet. 

$$