fzus63 kmqt 260801
glfls 
expires:202609262000;;074681

open lake forecast for lake superior
national weather service marquette mi
401 am edt sat sep 26 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 broad area of 30.3 inch high pressure over the great lakes basin 
today shifts northeast toward northern quebec tonight while a 29.4 
inch low deepens over the northern canadian prairies. sunday through 
monday, the high shifts east to the canadian maritimes, weakening to 
30.1 inches. this gradually weakens ridging over lake superior from 
30.1 inches sunday morning to 29.9 inches by monday night as a 29.8 
inch trough approaches from the west. by tuesday evening the trough 
will move over lake superior at around 29.7 inches.




lsz162-262000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 am edt sat sep 26 2026 /301 am cdt sat sep 26 2026/

.early this morning...east winds 5 to 15 knots. patchy fog. waves
calm to 2 feet. 
.today...east winds 5 to 15 knots increasing to 10 to 20 knots
late. patchy fog through early afternoon. waves calm to 2 feet. 
.tonight...east winds 5 to 15 knots veering south after midnight.
a chance of showers. waves calm to 2 feet. 
.sunday...south winds 5 to 15 knots veering southwest late. a
chance of showers through early afternoon. waves calm to 2 feet. 
.sunday night...west winds less than 10 knots veering north after
midnight. waves calm to 2 feet. 
.monday...northeast winds less than 10 knots becoming east 5 to
15 knots by mid afternoon. waves calm to 2 feet. 
.monday night...east winds 5 to 15 knots veering southeast after
midnight. waves calm to 2 feet. 
.tuesday...south winds 5 to 15 knots veering west. showers
likely, then a chance of showers. waves calm to 2 feet. 
.wednesday...southwest winds 5 to 15 knots veering west. waves
calm to 2 feet. 

$$

fzus63 kmqt 260801
glfls 
expires:202609262000;;074682

open lake forecast for lake superior
national weather service marquette mi
401 am edt sat sep 26 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 broad area of 30.3 inch high pressure over the great lakes basin 
today shifts northeast toward northern quebec tonight while a 29.4 
inch low deepens over the northern canadian prairies. sunday through 
monday, the high shifts east to the canadian maritimes, weakening to 
30.1 inches. this gradually weakens ridging over lake superior from 
30.1 inches sunday morning to 29.9 inches by monday night as a 29.8 
inch trough approaches from the west. by tuesday evening the trough 
will move over lake superior at around 29.7 inches.




lsz263-262000-
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-
401 am edt sat sep 26 2026

.early this morning...east winds 5 to 15 knots. waves calm to
2 feet. 
.today...southeast winds 5 to 15 knots backing east in the
afternoon. waves calm to 2 feet. 
.tonight...southeast winds 5 to 15 knots veering south after
midnight. a slight chance of showers after midnight. waves calm
to 2 feet. 
.sunday...south winds 5 to 15 knots veering southwest in the
afternoon. a slight chance of showers through early afternoon.
waves calm to 2 feet. 
.sunday night...southwest winds 5 to 15 knots veering west after
midnight. waves calm to 2 feet. 
.monday...northeast winds 5 to 15 knots becoming east less than
10 knots by mid afternoon. waves calm to 2 feet. 
.monday night...southeast winds 5 to 15 knots veering south after
midnight. waves calm to 2 feet. 
.tuesday...south winds 5 to 15 knots veering southwest. showers
likely, then a chance of showers. waves calm to 2 feet. 
.wednesday...southwest winds 5 to 15 knots increasing to 10 to
20 knots. waves calm to 2 feet. 

$$