fzus63 kmqt 032101
glfls 
expires:202602040900;;036028

open lake forecast for lake superior
national weather service marquette mi
400 pm est tue feb 3 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 30.3 inch high over the midwest and upper great lakes will build 
to 30.4 inches overnight and remain over the area through wednesday. 
meanwhile, a 29.6 inch low will move into northern saskatchewan, 
reaching northern manitoba wednesday night. this will bring a 29.9 
inch through over lake superior by thursday afternoon as the low 
moves into northern ontario. the trough will deepen to 29.6 inches 
over the lake on thursday night as low pressure over james bay 
deepens. the trough pushes east friday night with a 30.4 inch high 
moving over the lake on saturday. the high will shift east on sunday 
with 30.2 inch ridging over the lake.



lsz162-040900-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 pm est tue feb 3 2026 /300 pm cst tue feb 3 2026/

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

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 032101
glfls 
expires:202602040900;;036029

open lake forecast for lake superior
national weather service marquette mi
400 pm est tue feb 3 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 30.3 inch high over the midwest and upper great lakes will build 
to 30.4 inches overnight and remain over the area through wednesday. 
meanwhile, a 29.6 inch low will move into northern saskatchewan, 
reaching northern manitoba wednesday night. this will bring a 29.9 
inch through over lake superior by thursday afternoon as the low 
moves into northern ontario. the trough will deepen to 29.6 inches 
over the lake on thursday night as low pressure over james bay 
deepens. the trough pushes east friday night with a 30.4 inch high 
moving over the lake on saturday. the high will shift east on sunday 
with 30.2 inch ridging over the lake.



lsz263-040900-
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 tue feb 3 2026

.late this afternoon...west winds 5 to 15 knots. waves calm to
2 feet. 
.tonight...west winds 5 to 15 knots veering northwest late.
isolated snow showers after midnight. waves calm to 2 feet. 
.wednesday...northwest winds 5 to 15 knots backing west by mid
afternoon. waves calm to 2 feet. 
.wednesday night...west winds 5 to 15 knots backing southwest by
midnight, then increasing to 15 to 25 knots late. a chance of
snow showers after midnight. waves building to 2 to 4 feet. 
.thursday...southwest winds 15 to 25 knots veering west in the
afternoon. a slight chance of snow showers in the morning. waves
building to 3 to 5 feet occasionally to 7 feet. 
.thursday night...west winds 10 to 20 knots becoming northwest
20 to 30 knots after midnight. a chance of snow showers. waves
subsiding to 2 to 4 feet, then building to 4 to 7 feet
occasionally to 9 feet. 
.friday...north gales to 35 knots diminishing to 20 to 30 knots
in the afternoon. waves building to 6 to 9 feet occasionally to
11 feet, then subsiding to 3 to 6 feet occasionally to 8 feet. 
.friday night...north winds 15 to 25 knots diminishing to 10 to
20 knots after midnight. waves subsiding to calm to 2 feet. 
.saturday...south winds 5 to 15 knots backing southeast. waves
calm to 2 feet. 
.sunday...southeast winds 5 to 15 knots veering south. waves calm
to 2 feet. 

note, wave height forecasts are for ice free areas.

$$