fzus63 kmqt 291500
glfls 
expires:202511292100;;711761

open lake forecast for lake superior
national weather service marquette mi
1000 am est sat nov 29 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...

a 29.8 inch low near the oklahoma panhandle will maintain its 
intensity as it tracks to lower michigan by sunday morning and then 
into southern quebec by sunday evening, sending a 30.0 inch trough 
over the eastern half of lake superior on sunday. in its wake, 30.6 
inch high pressure moves over the upper midwest, sliding south of 
the great lakes at 30.5 inches on monday. the high will weaken 
tuesday into wednesday as 29.7 inch low pressure moves across 
ontario and a 29.5 inch nor'easter develops over the mid atlantic. a 
30.4 inch high will build into the central plains on wednesday night 
into thursday, extending a 30.2 inch ridge over lake superior.



lsz162-292100-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1000 am est sat nov 29 2025 /900 am cst sat nov 29 2025/

.rest of today...northeast winds 5 to 15 knots increasing to
10 to 20 knots by mid afternoon. a chance of snow showers. waves
calm to 2 feet building to 1 to 3 feet. 
.tonight...northeast winds 15 to 25 knots becoming north 20 to
30 knots by midnight. snow showers likely in the evening, then a
chance of snow showers after midnight. waves building to 4 to
8 feet occasionally to 10 feet. 
.sunday...north winds 20 to 30 knots backing northwest by late
morning, then diminishing to 15 to 25 knots by mid afternoon. a
slight chance of snow showers. waves subsiding to 2 to 4 feet. 
.sunday night...west winds 10 to 20 knots increasing to 15 to
25 knots after midnight. waves subsiding to calm to 2 feet, then
building to 1 to 3 feet. 
.monday...west winds 20 to 30 knots backing southwest 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. 
.monday night...west winds 15 to 25 knots diminishing to 10 to
20 knots after midnight. waves subsiding to calm to 2 feet. 
.tuesday...southwest winds 10 to 20 knots veering west. a chance
of snow showers. waves building to 1 to 3 feet. 
.wednesday...northwest winds 15 to 25 knots. waves building to
2 to 4 feet, then subsiding to 1 to 3 feet. 

$$

fzus63 kmqt 291500
glfls 
expires:202511292100;;711762

open lake forecast for lake superior
national weather service marquette mi
1000 am est sat nov 29 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...

a 29.8 inch low near the oklahoma panhandle will maintain its 
intensity as it tracks to lower michigan by sunday morning and then 
into southern quebec by sunday evening, sending a 30.0 inch trough 
over the eastern half of lake superior on sunday. in its wake, 30.6 
inch high pressure moves over the upper midwest, sliding south of 
the great lakes at 30.5 inches on monday. the high will weaken 
tuesday into wednesday as 29.7 inch low pressure moves across 
ontario and a 29.5 inch nor'easter develops over the mid atlantic. a 
30.4 inch high will build into the central plains on wednesday night 
into thursday, extending a 30.2 inch ridge over lake superior.



lsz263-292100-
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-
1000 am est sat nov 29 2025

.rest of today...north winds 5 to 15 knots veering northeast by
late morning, then increasing to 10 to 20 knots by mid afternoon.
a chance of snow showers. waves calm to 2 feet building to 1 to
3 feet. 
.tonight...northeast winds 15 to 25 knots increasing to 20 to
30 knots by midnight, then backing north late. snow showers in
the evening, then a chance of snow showers after midnight. waves
building to 6 to 9 feet occasionally to 11 feet. 
.sunday...north winds to 30 knots with a few gale force gusts to
35 knots possible becoming northwest 20 to 30 knots. a chance of
snow showers. waves subsiding to 3 to 6 feet occasionally to
8 feet. 
.sunday night...northwest winds 15 to 25 knots backing west after
midnight. waves subsiding to 2 to 4 feet, then building to 3 to
5 feet occasionally to 7 feet. 
.monday...west gales to 35 knots backing southwest in the
afternoon. a slight chance of snow showers. waves building to
6 to 10 feet occasionally to 13 feet. 
.monday night...west winds 20 to 30 knots diminishing to 15 to
25 knots after midnight. waves subsiding to 3 to 5 feet
occasionally to 7 feet. 
.tuesday...southwest winds 10 to 20 knots becoming west 15 to
25 knots. a chance of snow showers. waves subsiding to 2 to
4 feet, then building to 3 to 6 feet occasionally to 8 feet. 
.wednesday...northwest gales to 35 knots. a chance of snow
showers. freezing spray. waves building to 4 to 7 feet
occasionally to 9 feet, then subsiding to 3 to 6 feet
occasionally to 8 feet. 

$$