fzus63 kmqt 281500
glfls 
expires:202602282100;;395977

open lake forecast for lake superior
national weather service marquette mi
1000 am est sat feb 28 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 29.1 inch low near southern james bay early this morning continues 
departing northeast today over northern quebec. meanwhile, 30.6 inch 
high pressure over the canadian prairie builds in from the 
northwest. this high becomes centered over upper michigan sunday 
afternoon, then reaches new england for monday. a weak 30.1 inch 
trough slides through on tuesday. a 30.4 inch high moving over 
northern ontario on wednesday extends 30.2 inch ridging over the 
lake.



lsz162-282100-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1000 am est sat feb 28 2026 /900 am cst sat feb 28 2026/

.rest of today...northwest winds 10 to 20 knots. waves calm to
2 feet. 
.tonight...northwest winds 10 to 20 knots diminishing to 5 to
15 knots by midnight. waves calm to 2 feet. 
.sunday...northwest winds 5 to 15 knots backing west. waves calm
to 2 feet. 
.sunday night...southeast winds 5 to 15 knots veering south after
midnight. waves calm to 2 feet. 
.monday...southwest winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon. waves building to 3 to 5 feet
occasionally to 7 feet. 
.monday night...southwest gales to 35 knots. waves subsiding to
calm to 2 feet. 
.tuesday...southwest winds 20 to 30 knots becoming west 15 to
25 knots. waves calm to 2 feet. 
.wednesday...west winds 10 to 20 knots becoming east 15 to
25 knots. waves building to 3 to 5 feet occasionally to 7 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 281500
glfls 
expires:202602282100;;395978

open lake forecast for lake superior
national weather service marquette mi
1000 am est sat feb 28 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 29.1 inch low near southern james bay early this morning continues 
departing northeast today over northern quebec. meanwhile, 30.6 inch 
high pressure over the canadian prairie builds in from the 
northwest. this high becomes centered over upper michigan sunday 
afternoon, then reaches new england for monday. a weak 30.1 inch 
trough slides through on tuesday. a 30.4 inch high moving over 
northern ontario on wednesday extends 30.2 inch ridging over the 
lake.



lsz263-282100-
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 feb 28 2026

.rest of today...northwest winds 10 to 20 knots diminishing to
5 to 15 knots by mid afternoon. a slight chance of snow showers
late in the morning. waves 2 to 4 feet subsiding to calm to
2 feet. 
.tonight...northwest winds 5 to 15 knots veering north by
midnight, then backing northwest late. a slight chance of snow
showers after midnight. waves calm to 2 feet. 
.sunday...northwest winds 5 to 15 knots backing west. waves calm
to 2 feet. 
.sunday night...south winds 5 to 15 knots. waves calm to 2 feet. 
.monday...southwest winds 10 to 20 knots. waves building to 3 to
6 feet occasionally to 8 feet. 
.monday night...southwest gales to 35 knots. waves subsiding to
1 to 3 feet. 
.tuesday...southwest winds 20 to 30 knots veering west. waves
subsiding to calm to 2 feet. 
.wednesday...west winds 20 to 30 knots backing east. waves
building to 1 to 3 feet, then subsiding to calm to 2 feet. 

note, wave height forecasts are for ice free areas.

$$