fzus63 kmqt 292101
glfls 
expires:202511300900;;726968

open lake forecast for lake superior
national weather service marquette mi
400 pm 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 29.9 inch low over missouri this evening will deepen slightly to 
29.8 inches over southern michigan overnight tonight into sunday 
morning. the low will reach georgian bay at 29.7 inches sunday 
afternoon while 30.6 inch high pressure expands over the northern 
plains. as the low quickly moves to the mouth of the st lawrence 
river monday morning, the high will weaken slightly to 30.5 inches 
just southwest of the great lakes. this high weakens to 30.3 inches 
over the lower great lakes monday evening while a weak 30.0 inch 
trough descends over the lake from northern ontario. after the 
trough briefly deepens to 29.9 inches, a weak 30.0 inch ridge moves 
over the lake tuesday morning as a 29.7 inch clipper low forms over 
saskatchewan. the low weakens slightly to 29.8 inches tuesday 
evening as it approaches lake superior. by wednesday afternoon, the 
low will deepen to 29.6 inches south of james bay while a 30.5 inch 
high builds over the high plains. as the low departs to the east, 
the high shifts over the central plains thursday morning, moving 
south of the great lakes thursday evening.



lsz162-300900-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 pm est sat nov 29 2025 /300 pm cst sat nov 29 2025/

.late this afternoon...northeast winds 15 to 25 knots. a chance
of snow showers. waves 1 to 3 feet building to 2 to 4 feet. 
.tonight...northeast winds 15 to 25 knots increasing to 20 to
30 knots by midnight, then backing north late. a chance of snow
showers. waves building to 6 to 9 feet occasionally to 11 feet. 
.sunday...north winds 15 to 25 knots backing northwest. waves
subsiding to 2 to 4 feet. 
.sunday night...northwest winds 10 to 20 knots backing west by
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. a slight chance of snow showers in the afternoon.
waves building 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...west winds 10 to 20 knots backing southwest in the
afternoon. waves building to 1 to 3 feet. 
.tuesday night...west winds 15 to 25 knots veering northwest
after midnight. a chance of snow showers. waves 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. 
.thursday...southwest winds 20 to 30 knots becoming west 15 to
25 knots. a chance of snow showers. waves building to 3 to 6 feet
occasionally to 8 feet. 

$$

fzus63 kmqt 292101
glfls 
expires:202511300900;;726969

open lake forecast for lake superior
national weather service marquette mi
400 pm 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 29.9 inch low over missouri this evening will deepen slightly to 
29.8 inches over southern michigan overnight tonight into sunday 
morning. the low will reach georgian bay at 29.7 inches sunday 
afternoon while 30.6 inch high pressure expands over the northern 
plains. as the low quickly moves to the mouth of the st lawrence 
river monday morning, the high will weaken slightly to 30.5 inches 
just southwest of the great lakes. this high weakens to 30.3 inches 
over the lower great lakes monday evening while a weak 30.0 inch 
trough descends over the lake from northern ontario. after the 
trough briefly deepens to 29.9 inches, a weak 30.0 inch ridge moves 
over the lake tuesday morning as a 29.7 inch clipper low forms over 
saskatchewan. the low weakens slightly to 29.8 inches tuesday 
evening as it approaches lake superior. by wednesday afternoon, the 
low will deepen to 29.6 inches south of james bay while a 30.5 inch 
high builds over the high plains. as the low departs to the east, 
the high shifts over the central plains thursday morning, moving 
south of the great lakes thursday evening.



lsz263-300900-
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 pm est sat nov 29 2025

.late this afternoon...east winds 10 to 20 knots. 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. a chance of snow
showers. waves building to 6 to 9 feet occasionally to 11 feet. 
.sunday...north winds 20 to 30 knots becoming northwest 15 to
25 knots by mid afternoon. a slight chance of snow showers in the
morning. waves subsiding to 3 to 5 feet occasionally to 7 feet. 
.sunday night...northwest winds 10 to 20 knots backing west by
midnight, then increasing to 15 to 25 knots late. waves subsiding
to 1 to 3 feet, then building to 3 to 5 feet occasionally to
7 feet. 
.monday...west winds 20 to 30 knots becoming southwest gales to
35 knots in the afternoon. a slight chance of snow showers. waves
building to 6 to 9 feet occasionally to 11 feet. 
.monday night...west winds 15 to 25 knots. a chance of snow
showers. waves subsiding to 3 to 5 feet occasionally to 7 feet. 
.tuesday...west winds 10 to 20 knots backing southwest in the
afternoon. waves subsiding to 2 to 4 feet. 
.tuesday night...west winds 10 to 20 knots increasing to 20 to
30 knots after midnight. a chance of snow showers in the evening,
then snow showers likely after midnight. waves building to 3 to
6 feet occasionally to 8 feet. 
.wednesday...northwest winds 20 to 30 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. 
.thursday...west winds 20 to 30 knots. freezing spray. a chance
of snow showers. waves building to 5 to 8 feet occasionally to
10 feet. 

$$