fzus63 kmqt 050901
glfls 
expires:202601052100;;818343

open lake forecast for lake superior
national weather service marquette mi
400 am est mon jan 5 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...

today, 29.8 inch low pressure moves over lake superior while a 29.6 
inch low develops over the centralo plains. the plains low then 
moves to southern lake michigan tuesday, then southern ontario 
tuesday evening as it deepens to 29.5 inches. ridging of around 29.8 
inches then moves over lake superior on wednesday ahead of a 29.5 
inch low arriving over northern ontario thursday morning. this low 
brings a trough across the lake thursday before lifting to james bay 
late thursday. meanwhile, a colorado low of around 29.6 inches will 
quickly approach the upper great lakes by friday morning, moving 
into ontario by late friday to early saturday.



lsz162-052100-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 am est mon jan 5 2026 /300 am cst mon jan 5 2026/

.early this morning...northwest winds 5 to 15 knots. waves calm
to 2 feet. 
.today...north winds 5 to 15 knots backing southwest. waves calm
to 2 feet. 
.tonight...southwest winds 5 to 15 knots veering west late. waves
calm to 2 feet. 
.tuesday...west winds 5 to 15 knots increasing to 10 to 20 knots
by mid afternoon. a slight chance of rain showers, freezing rain
and snow showers in the morning. waves calm to 2 feet. 
.tuesday night...west winds 10 to 20 knots. waves calm to 2 feet.
.wednesday...southwest winds 10 to 20 knots. waves calm to
2 feet. 
.wednesday night...southwest winds 10 to 20 knots. waves calm to
2 feet. 
.thursday...west winds 10 to 20 knots becoming north 5 to
15 knots. waves calm to 2 feet. 
.friday...northeast winds 5 to 15 knots increasing to 10 to
20 knots. waves building to 2 to 4 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 050901
glfls 
expires:202601052100;;818344

open lake forecast for lake superior
national weather service marquette mi
400 am est mon jan 5 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...

today, 29.8 inch low pressure moves over lake superior while a 29.6 
inch low develops over the centralo plains. the plains low then 
moves to southern lake michigan tuesday, then southern ontario 
tuesday evening as it deepens to 29.5 inches. ridging of around 29.8 
inches then moves over lake superior on wednesday ahead of a 29.5 
inch low arriving over northern ontario thursday morning. this low 
brings a trough across the lake thursday before lifting to james bay 
late thursday. meanwhile, a colorado low of around 29.6 inches will 
quickly approach the upper great lakes by friday morning, moving 
into ontario by late friday to early saturday.



lsz263-052100-
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 am est mon jan 5 2026

.early this morning...west winds 5 to 15 knots. waves calm to
2 feet. 
.today...north winds 5 to 15 knots backing southwest. waves calm
to 2 feet. 
.tonight...southwest winds 5 to 15 knots. waves calm to 2 feet. 
.tuesday...southwest winds less than 10 knots becoming west 5 to
15 knots. a slight chance of freezing rain in the morning. a
slight chance of rain and snow showers. waves calm to 2 feet. 
.tuesday night...west winds 5 to 15 knots. waves calm to 2 feet. 
.wednesday...southwest winds 10 to 20 knots. waves building to
1 to 3 feet, then subsiding to calm to 2 feet. 
.wednesday night...southwest winds 5 to 15 knots. waves calm to
2 feet. 
.thursday...west winds 10 to 20 knots becoming north 5 to
15 knots. waves calm to 2 feet. 
.friday...northeast winds 5 to 15 knots increasing to 10 to
20 knots. waves building to 3 to 6 feet occasionally to 8 feet. 

note, wave height forecasts are for ice free areas.

$$