fzus63 kmqt 010301
glfls 
expires:202601010900;;584248

open lake forecast for lake superior
national weather service marquette mi
1000 pm est wed dec 31 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...

as a weakening 28.3 inch low continues retrograding over hudson bay 
through tonight, a weakening 30.5 inch ridge builds from the 
canadian prairies into the upper midwest. this pattern remains 
fairly stable thursday through saturday as another strong hudson bay 
low sets up while ridging averaging 30.1 inches remains over the 
upper mississippi valley.



lsz162-010900-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1000 pm est wed dec 31 2025 /900 pm cst wed dec 31 2025/

.rest of tonight...northwest winds 20 to 30 knots. heavy freezing
spray late in the evening. waves 3 to 6 feet occasionally to
8 feet. 
.thursday...west winds 15 to 25 knots. a slight chance of snow
showers. waves subsiding to 3 to 5 feet occasionally to 7 feet. 
.thursday night...west winds 15 to 25 knots. a slight chance of
snow showers in the evening. waves subsiding to 1 to 3 feet. 
.friday...west winds 10 to 20 knots increasing to 15 to 25 knots
in the afternoon. waves 1 to 3 feet. 
.friday night...northwest winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. a slight chance of snow showers
after midnight. waves subsiding to calm to 2 feet. 
.saturday...northwest winds 5 to 15 knots becoming west 10 to
20 knots in the afternoon. a chance of snow showers. waves calm
to 2 feet. 
.saturday night...northwest winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. waves calm to 2 feet. 
.sunday...west winds 5 to 15 knots becoming southwest 10 to
20 knots. a chance of snow showers. waves calm to 2 feet. 
.monday...west winds 5 to 15 knots. waves calm to 2 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 010301
glfls 
expires:202601010900;;584249

open lake forecast for lake superior
national weather service marquette mi
1000 pm est wed dec 31 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...

as a weakening 28.3 inch low continues retrograding over hudson bay 
through tonight, a weakening 30.5 inch ridge builds from the 
canadian prairies into the upper midwest. this pattern remains 
fairly stable thursday through saturday as another strong hudson bay 
low sets up while ridging averaging 30.1 inches remains over the 
upper mississippi valley.



lsz263-010900-
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 pm est wed dec 31 2025

...heavy freezing spray warning in effect through thursday
evening...

.rest of tonight...northwest winds 20 to 30 knots. heavy freezing
spray. a slight chance of snow showers. waves 5 to 9 feet
occasionally to 11 feet. 
.thursday...northwest winds 20 to 30 knots backing west. heavy
freezing spray. a chance of snow showers. waves building to 5 to
9 feet occasionally to 11 feet. 
.thursday night...west winds 20 to 30 knots veering northwest
late. freezing spray. a chance of snow showers. waves subsiding
to 4 to 7 feet occasionally to 9 feet. 
.friday...northwest winds 20 to 30 knots becoming west 15 to
25 knots in the afternoon. freezing spray. waves subsiding to
3 to 6 feet occasionally to 8 feet. 
.friday night...northwest winds 15 to 25 knots diminishing to
10 to 20 knots after midnight. a slight chance of snow showers
after midnight. waves subsiding to 1 to 3 feet. 
.saturday...northwest winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon. a chance of snow showers. waves
subsiding to calm to 2 feet, then building to 1 to 3 feet. 
.saturday night...northwest winds 10 to 20 knots. waves 1 to
3 feet. 
.sunday...northwest winds 5 to 15 knots backing southwest. a
chance of snow showers. waves subsiding to calm to 2 feet. 
.monday...west winds 5 to 15 knots. waves calm to 2 feet. 

note, wave height forecasts are for ice free areas.

$$