fzus63 kmqt 160800
glfls 
expires:202603162000;;769690

open lake forecast for lake superior
national weather service marquette mi
400 am edt mon mar 16 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 over lower michigan reaches northern lake huron this 
afternoon. tonight, lake superior will be between the low as it 
shifts into quebec and a 30.3 inch high over the great plains. this 
high shifts south of the great lakes basin through tuesday, 
extending weak 30.0 inch ridging over lake superior. a 29.5 inch low 
over the canadian prairie wednesday morning will begin to push 
towards the lake on wednesday, weakening to 29.8 inches over 
northwestern ontario wednesday night. weak ridging of around 30.1 
inches will be over the lake thursday evening ahead of the next 
clipper low moving over northern ontario by friday afternoon at 
around 29.7 inches.



lsz162-162000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 am edt mon mar 16 2026 /300 am cdt mon mar 16 2026/

...gale warning in effect through this evening...
...heavy freezing spray warning in effect through late tonight...

.early this morning...north gales to 40 knots. heavy freezing
spray. a slight chance of snow. waves 15 to 20 feet occasionally
to 25 feet. 
.today...north gales to 45 knots. a slight chance of snow through
early afternoon. heavy freezing spray. waves subsiding to 8 to
11 feet occasionally to 14 feet. 
.tonight...north gales to 35 knots diminishing to 10 to 20 knots.
heavy freezing spray through midnight. waves subsiding to 2 to
4 feet. 
.tuesday...northwest winds 5 to 15 knots backing west in the
afternoon, then becoming southwest 10 to 20 knots late. waves
subsiding to calm to 2 feet. 
.tuesday night...south winds 15 to 25 knots veering southwest
after midnight. a chance of snow showers. waves building to 3 to
5 feet occasionally to 7 feet. 
.wednesday...southwest winds 10 to 20 knots. waves subsiding to
1 to 3 feet. 
.wednesday night...southwest winds 10 to 20 knots veering west
after midnight. a chance of rain showers, possibly mixed with
snow. waves subsiding to calm to 2 feet. 
.thursday...southwest winds 5 to 15 knots veering west. waves
building to 1 to 3 feet. 
.friday...east winds 10 to 20 knots becoming northeast 15 to
25 knots. a chance of rain showers. a chance of snow showers.
waves 1 to 3 feet. 

$$

fzus63 kmqt 160800
glfls 
expires:202603162000;;769691

open lake forecast for lake superior
national weather service marquette mi
400 am edt mon mar 16 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 over lower michigan reaches northern lake huron this 
afternoon. tonight, lake superior will be between the low as it 
shifts into quebec and a 30.3 inch high over the great plains. this 
high shifts south of the great lakes basin through tuesday, 
extending weak 30.0 inch ridging over lake superior. a 29.5 inch low 
over the canadian prairie wednesday morning will begin to push 
towards the lake on wednesday, weakening to 29.8 inches over 
northwestern ontario wednesday night. weak ridging of around 30.1 
inches will be over the lake thursday evening ahead of the next 
clipper low moving over northern ontario by friday afternoon at 
around 29.7 inches.



lsz263-162000-
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 edt mon mar 16 2026

...storm warning in effect until 2 pm edt this afternoon...
...heavy freezing spray warning in effect through tuesday
afternoon...
...gale warning in effect from 2 pm edt this afternoon through
late tonight...

.early this morning...north gales to 45 knots. heavy freezing
spray. a chance of snow. waves 17 to 22 feet occasionally to
28 feet. 
.today...north gales to 45 knots. heavy freezing spray. a slight
chance of snow. waves subsiding to 12 to 17 feet occasionally to
21 feet. 
.tonight...north gales to 45 knots. heavy freezing spray. a
slight chance of snow showers. waves subsiding to 5 to 8 feet
occasionally to 10 feet. 
.tuesday...north winds 15 to 25 knots becoming northwest 5 to
15 knots in the afternoon, then backing southwest late. a slight
chance of snow showers through early afternoon. waves subsiding
to calm to 2 feet. 
.tuesday night...south winds 15 to 25 knots. a slight chance of
snow showers. waves building to 3 to 5 feet occasionally to
7 feet. 
.wednesday...southwest winds 10 to 20 knots. waves subsiding to
2 to 4 feet. 
.wednesday night...southwest winds 5 to 15 knots veering west
after midnight. a chance of rain showers. waves subsiding to calm
to 2 feet. 
.thursday...southwest winds 5 to 15 knots increasing to 10 to
20 knots. waves building to 1 to 3 feet. 
.friday...east winds 10 to 20 knots increasing to 15 to 25 knots.
a chance of rain showers. a chance of snow showers. waves
building to 3 to 5 feet occasionally to 7 feet. 

$$