fzus63 kmqt 080801
glfls 
expires:202607082000;;610440

open lake forecast for lake superior
national weather service marquette mi
400 am edt wed jul 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 hudson low moves into northern quebec throughout today, sending a 
trough as low as 29.9 inches over the upper great lakes. weak high 
pressure to 30.0 inches then builds over lake superior and northern 
ontario thursday and friday. saturday, the high builds to 30.1 
inches as it shifts towards southern ontario. the high continues to 
shift south sunday, reaching the lower great lakes at 30.2 inches 
before weakening to 30.1 inches again monday south of the great 
lakes. by late monday, low pressure of at least 29.6 inches will 
develop near the ontario/manitoba line.




lsz162-082000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 am edt wed jul 8 2026 /300 am cdt wed jul 8 2026/

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

$$

fzus63 kmqt 080801
glfls 
expires:202607082000;;610441

open lake forecast for lake superior
national weather service marquette mi
400 am edt wed jul 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 hudson low moves into northern quebec throughout today, sending a 
trough as low as 29.9 inches over the upper great lakes. weak high 
pressure to 30.0 inches then builds over lake superior and northern 
ontario thursday and friday. saturday, the high builds to 30.1 
inches as it shifts towards southern ontario. the high continues to 
shift south sunday, reaching the lower great lakes at 30.2 inches 
before weakening to 30.1 inches again monday south of the great 
lakes. by late monday, low pressure of at least 29.6 inches will 
develop near the ontario/manitoba line.




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-
400 am edt wed jul 8 2026

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

$$