fzus63 kmqt 120900
glfls 
expires:202611122100;;684759

open lake forecast for lake superior
national weather service marquette mi
400 am est thu nov 12 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 29.6 inch low over the mid-atlantic moves to the eastern seaboard 
today, deepening to 29.4 inches as it moves offshore this evening. 
meanwhile, a 30.4 inch high pressure over northern manitoba slowly 
weakens to 30.3 inches over northwestern ontario by friday. this 
high slowly tracks eastward through the end of the week, moving over 
the western great lakes at 30.4 inches by sunday. the high then 
builds to 30.5 inches over the lower great lakes on monday before 
inching into the mid-atlantic on tuesday.




lsz162-122100-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 am est thu nov 12 2026 /300 am cst thu nov 12 2026/

.early this morning...north winds 20 to 30 knots. a chance of
rain showers. waves 4 to 7 feet occasionally to 9 feet. 
.today...north winds 20 to 30 knots diminishing to 10 to 20 knots
by late morning, then increasing to 15 to 25 knots by mid
afternoon. waves subsiding to 2 to 4 feet. 
.tonight...north winds 15 to 25 knots. waves building to 3 to
5 feet occasionally to 7 feet. 
.friday...north winds 15 to 25 knots diminishing to 5 to
15 knots. waves subsiding to 1 to 3 feet. 
.friday night...north winds 5 to 15 knots increasing to 10 to
20 knots after midnight. waves subsiding to calm to 2 feet. 
.saturday...north winds 5 to 15 knots veering northeast in the
afternoon. waves calm to 2 feet. 
.saturday night...east winds 5 to 15 knots veering southwest
after midnight. waves calm to 2 feet. 
.sunday...southwest winds 5 to 15 knots increasing to 10 to
20 knots. waves calm to 2 feet. 
.monday...southwest winds 15 to 25 knots. waves building to 2 to
4 feet. 

$$

fzus63 kmqt 120900
glfls 
expires:202611122100;;684760

open lake forecast for lake superior
national weather service marquette mi
400 am est thu nov 12 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 29.6 inch low over the mid-atlantic moves to the eastern seaboard 
today, deepening to 29.4 inches as it moves offshore this evening. 
meanwhile, a 30.4 inch high pressure over northern manitoba slowly 
weakens to 30.3 inches over northwestern ontario by friday. this 
high slowly tracks eastward through the end of the week, moving over 
the western great lakes at 30.4 inches by sunday. the high then 
builds to 30.5 inches over the lower great lakes on monday before 
inching into the mid-atlantic on tuesday.




lsz263-122100-
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 est thu nov 12 2026

.early this morning...north winds 15 to 25 knots. a chance of
snow showers, possibly mixed with rain. waves 4 to 7 feet
occasionally to 9 feet. 
.today...north winds 15 to 25 knots. a chance of snow showers,
possibly mixed with rain. waves subsiding to 3 to 6 feet
occasionally to 8 feet. 
.tonight...north winds 15 to 25 knots increasing to 20 to
30 knots by midnight, then diminishing to 15 to 25 knots late. a
slight chance of snow showers. waves building to 4 to 7 feet
occasionally to 9 feet. 
.friday...north winds 15 to 25 knots diminishing to 10 to
20 knots. a slight chance of rain showers in the morning. a
slight chance of snow showers. waves subsiding to 3 to 5 feet
occasionally to 7 feet. 
.friday night...north winds 10 to 20 knots. waves subsiding to
1 to 3 feet. 
.saturday...north winds 10 to 20 knots diminishing to 5 to
15 knots in the afternoon. waves subsiding to calm to 2 feet. 
.saturday night...north winds less than 10 knots backing
northwest after midnight. waves calm to 2 feet. 
.sunday...southwest winds 5 to 15 knots increasing to 10 to
20 knots. waves calm to 2 feet. 
.monday...southwest winds 20 to 30 knots. waves building to 2 to
4 feet, then subsiding to 1 to 3 feet. 

$$