fzus63 kmqt 172107 cca
glfls 
expires:202511180900;;583012

open lake forecast for lake superior...corrected
national weather service marquette mi
407 pm est mon nov 17 2025

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...
high pressure averaging 30.1 inches will build over lake superior 
through tuesday while a 28.8 inch low moves north through the 
canadian maritimes. 30.2 inch ridging will continue to encompass the 
great lakes basin wednesday, shifting into new england by thursday 
as a 29.7 inch low develops over northern ontario. high pressure
ridging of around 30.1 inches develops over the northern plains and
upper midwest on friday before moving into the great lakes region by
saturday.



lsz162-180900-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
407 pm est mon nov 17 2025 /307 pm cst mon nov 17 2025/

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

$$

fzus63 kmqt 172107 cca
glfls 
expires:202511180900;;583013

open lake forecast for lake superior...corrected
national weather service marquette mi
407 pm est mon nov 17 2025

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...
high pressure averaging 30.1 inches will build over lake superior 
through tuesday while a 28.8 inch low moves north through the 
canadian maritimes. 30.2 inch ridging will continue to encompass the 
great lakes basin wednesday, shifting into new england by thursday 
as a 29.7 inch low develops over northern ontario. high pressure
ridging of around 30.1 inches develops over the northern plains and
upper midwest on friday before moving into the great lakes region by
saturday.



lsz263-180900-
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-
407 pm est mon nov 17 2025

.late this afternoon...northwest winds 5 to 15 knots. waves calm
to 2 feet. 
.tonight...north winds 5 to 15 knots becoming northeast less than
10 knots late. waves calm to 2 feet. 
.tuesday...north winds less than 10 knots backing northwest by
mid afternoon. waves calm to 2 feet. 
.tuesday night...west winds less than 10 knots becoming southwest
5 to 15 knots by midnight. waves calm to 2 feet. 
.wednesday...southwest winds 10 to 20 knots. waves building to
1 to 3 feet. 
.wednesday night...southwest winds 10 to 20 knots. a chance of
rain showers. waves building to 2 to 4 feet. 
.thursday...southwest winds 15 to 25 knots veering west in the
afternoon. rain showers likely in the morning, then a chance of
rain showers in the afternoon. waves 2 to 4 feet. 
.thursday night...west winds 15 to 25 knots. waves building to
3 to 5 feet occasionally to 7 feet. 
.friday...northwest winds 15 to 25 knots becoming west 5 to
15 knots. waves subsiding to calm to 2 feet. 
.saturday...southwest winds 10 to 20 knots veering west. waves
building to 1 to 3 feet. 

$$