fzus63 kmqt 070801
glfls 
expires:202610072000;;670502

open lake forecast for lake superior
national weather service marquette mi
401 am edt wed oct 7 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...

29.7 inch troughing continues today as the associated 29.4 inch low 
tracks eastward across far northern ontario towards james bay. high 
pressure then builds in from the canadian prairies and northern 
plains late in the work week, with 30.0 inch ridging over lake 
superior on thursday strengthening to 30.1 inches on friday. a 29.4 
inch clipper low then develops off the northern rockies late friday 
and extends a 29.6 to 29.8 inch trough into the upper great lakes by 
saturday which continues into sunday.




lsz162-072000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 am edt wed oct 7 2026 /301 am cdt wed oct 7 2026/

.early this morning...west winds 10 to 20 knots. waves calm to
2 feet. 
.today...west winds 10 to 20 knots increasing to 20 to 30 knots.
sprinkles by mid afternoon. waves building to 2 to 4 feet, then
subsiding to 1 to 3 feet. 
.tonight...west winds 15 to 25 knots diminishing to 10 to
20 knots late. sprinkles through midnight. waves building to 2 to
4 feet, then subsiding to 1 to 3 feet. 
.thursday...west winds 10 to 20 knots increasing to 15 to
25 knots in the afternoon, then diminishing to 10 to 20 knots
late. waves subsiding to calm to 2 feet. 
.thursday night...west winds 5 to 15 knots. waves calm to 2 feet.
.friday...southwest winds 5 to 15 knots backing east by mid
afternoon. waves calm to 2 feet. 
.friday night...east winds 10 to 20 knots. waves building to 1 to
3 feet. 
.saturday...east winds 20 to 30 knots becoming southwest gales to
35 knots. waves building to 2 to 4 feet, then subsiding to 1 to
3 feet. 
.sunday...southwest winds 15 to 25 knots veering north. waves
subsiding to 1 to 3 feet, then building to 3 to 5 feet
occasionally to 7 feet. 

$$

fzus63 kmqt 070801
glfls 
expires:202610072000;;670503

open lake forecast for lake superior
national weather service marquette mi
401 am edt wed oct 7 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...

29.7 inch troughing continues today as the associated 29.4 inch low 
tracks eastward across far northern ontario towards james bay. high 
pressure then builds in from the canadian prairies and northern 
plains late in the work week, with 30.0 inch ridging over lake 
superior on thursday strengthening to 30.1 inches on friday. a 29.4 
inch clipper low then develops off the northern rockies late friday 
and extends a 29.6 to 29.8 inch trough into the upper great lakes by 
saturday which continues into sunday.




lsz263-072000-
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-
401 am edt wed oct 7 2026

.early this morning...west winds 10 to 20 knots. waves 1 to
3 feet. 
.today...west winds 10 to 20 knots increasing to 20 to 30 knots.
a chance of showers. waves building to 3 to 6 feet occasionally
to 8 feet. 
.tonight...northwest winds 15 to 25 knots. a chance of showers
through midnight. waves subsiding to 2 to 4 feet, then building
to 3 to 5 feet occasionally to 7 feet. 
.thursday...northwest winds 15 to 25 knots backing west in the
afternoon. waves building to 3 to 6 feet occasionally to 8 feet,
then subsiding to 2 to 4 feet. 
.thursday night...west winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. waves subsiding to calm to 2 feet. 
.friday...southwest winds 5 to 15 knots backing southeast by mid
afternoon. waves calm to 2 feet. 
.friday night...southeast winds 10 to 20 knots. waves building to
1 to 3 feet. 
.saturday...southeast winds 20 to 30 knots becoming southwest
gales to 35 knots. waves building to 4 to 7 feet occasionally to
9 feet. 
.sunday...southwest winds 20 to 30 knots veering north. a chance
of showers. waves subsiding to 2 to 4 feet, then building to 3 to
6 feet occasionally to 8 feet. 

$$

fzus63 kmqt 070801
glfls 
expires:202610072000;;670504

open lake forecast for lake superior
national weather service marquette mi
401 am edt wed oct 7 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...

29.7 inch troughing continues today as the associated 29.4 inch low 
tracks eastward across far northern ontario towards james bay. high 
pressure then builds in from the canadian prairies and northern 
plains late in the work week, with 30.0 inch ridging over lake 
superior on thursday strengthening to 30.1 inches on friday. a 29.4 
inch clipper low then develops off the northern rockies late friday 
and extends a 29.6 to 29.8 inch trough into the upper great lakes by 
saturday which continues into sunday.




lsz264-072000-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
401 am edt wed oct 7 2026

.early this morning...west winds 15 to 25 knots. waves 2 to
4 feet. 
.today...west winds 15 to 25 knots increasing to 20 to 30 knots
in the afternoon. a chance of showers. waves subsiding to 1 to
3 feet, then building to 3 to 5 feet occasionally to 7 feet. 
.tonight...northwest winds 15 to 25 knots. a chance of showers
through midnight. waves building to 3 to 6 feet occasionally to
8 feet. 
.thursday...northwest winds 20 to 30 knots diminishing to 15 to
25 knots late. sprinkles through early afternoon. waves building
to 4 to 7 feet occasionally to 9 feet, then subsiding to 3 to
5 feet occasionally to 7 feet. 
.thursday night...northwest winds 10 to 20 knots becoming west
5 to 15 knots after midnight. a chance of showers through
midnight. waves subsiding to calm to 2 feet. 
.friday...west winds 5 to 15 knots backing southeast by mid
afternoon. waves calm to 2 feet. 
.friday night...southeast winds 5 to 15 knots increasing to 15 to
25 knots after midnight. waves building to 2 to 4 feet. 
.saturday...southeast winds 20 to 30 knots becoming southwest
gales to 35 knots. waves building to 4 to 7 feet occasionally to
9 feet. 
.sunday...southwest winds 20 to 30 knots veering north. a chance
of showers. waves subsiding to 2 to 4 feet, then building to 3 to
6 feet occasionally to 8 feet. 

$$

fzus63 kmqt 070801
glfls 
expires:202610072000;;670505

open lake forecast for lake superior
national weather service marquette mi
401 am edt wed oct 7 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...

29.7 inch troughing continues today as the associated 29.4 inch low 
tracks eastward across far northern ontario towards james bay. high 
pressure then builds in from the canadian prairies and northern 
plains late in the work week, with 30.0 inch ridging over lake 
superior on thursday strengthening to 30.1 inches on friday. a 29.4 
inch clipper low then develops off the northern rockies late friday 
and extends a 29.6 to 29.8 inch trough into the upper great lakes by 
saturday which continues into sunday.




lsz265-072000-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
401 am edt wed oct 7 2026

.early this morning...northwest winds 20 to 30 knots. waves 1 to
3 feet. 
.today...west winds 20 to 30 knots increasing to 30 knots with a
few gale force gusts to 35 knots possible late. a chance of
showers. waves building to 3 to 5 feet occasionally to 7 feet. 
.tonight...northwest winds to 30 knots with a few gale force
gusts to 35 knots possible diminishing to 20 to 30 knots after
midnight, then increasing to 30 knots with a few gale force gusts
to 35 knots possible late. a chance of showers through midnight.
waves subsiding to 2 to 4 feet, then building to 3 to 6 feet
occasionally to 8 feet. 
.thursday...northwest winds to 30 knots with a few gale force
gusts to 35 knots possible diminishing to 20 to 30 knots late.
sprinkles through early afternoon. waves building to 4 to 7 feet
occasionally to 9 feet, then subsiding to 2 to 4 feet. 
.thursday night...west winds 15 to 25 knots diminishing to 10 to
20 knots after midnight. sprinkles through midnight. waves
subsiding to calm to 2 feet. 
.friday...west winds 10 to 20 knots backing southeast by mid
afternoon. waves calm to 2 feet. 
.friday night...southeast winds 15 to 25 knots. waves building to
2 to 4 feet. 
.saturday...southeast gales to 35 knots veering southwest. waves
building to 3 to 6 feet occasionally to 8 feet. 
.sunday...southwest winds 20 to 30 knots veering northwest. waves
subsiding to 1 to 3 feet, then building to 3 to 6 feet
occasionally to 8 feet. 

$$

fzus63 kmqt 070801
glfls 
expires:202610072000;;670506

open lake forecast for lake superior
national weather service marquette mi
401 am edt wed oct 7 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...

29.7 inch troughing continues today as the associated 29.4 inch low 
tracks eastward across far northern ontario towards james bay. high 
pressure then builds in from the canadian prairies and northern 
plains late in the work week, with 30.0 inch ridging over lake 
superior on thursday strengthening to 30.1 inches on friday. a 29.4 
inch clipper low then develops off the northern rockies late friday 
and extends a 29.6 to 29.8 inch trough into the upper great lakes by 
saturday which continues into sunday.




lsz266-072000-
lake superior east of a line from manitou island to marquette mi
and west of a line from grand marais mi to the us/canadian border
beyond 5nm from shore-
401 am edt wed oct 7 2026

.early this morning...northwest winds 20 to 30 knots. waves 2 to
4 feet. 
.today...northwest winds 20 to 30 knots backing west in the
afternoon. a chance of showers. waves building to 3 to 5 feet
occasionally to 7 feet. 
.tonight...northwest winds 20 to 30 knots. a slight chance of
thunderstorms through midnight. a chance of showers. waves
building to 3 to 6 feet occasionally to 8 feet. 
.thursday...northwest winds to 30 knots with a few gale force
gusts to 35 knots possible diminishing to 20 to 30 knots in the
afternoon. a chance of showers. waves building to 5 to 9 feet
occasionally to 11 feet. 
.thursday night...northwest winds 15 to 25 knots becoming west
10 to 20 knots after midnight. a chance of showers through
midnight. waves subsiding to 1 to 3 feet. 
.friday...west winds 10 to 20 knots backing southeast by mid
afternoon. waves subsiding to calm to 2 feet. 
.friday night...southeast winds 10 to 20 knots increasing to
15 to 25 knots after midnight. waves building to 2 to 4 feet. 
.saturday...southeast gales to 40 knots becoming south gales to
35 knots. waves building to 4 to 7 feet occasionally to 9 feet,
then subsiding to 3 to 6 feet occasionally to 8 feet. 
.sunday...southwest winds 20 to 30 knots veering west. waves
subsiding to 3 to 6 feet occasionally to 8 feet. 

$$

fzus63 kmqt 070801
glfls 
expires:202610072000;;670507

open lake forecast for lake superior
national weather service marquette mi
401 am edt wed oct 7 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...

29.7 inch troughing continues today as the associated 29.4 inch low 
tracks eastward across far northern ontario towards james bay. high 
pressure then builds in from the canadian prairies and northern 
plains late in the work week, with 30.0 inch ridging over lake 
superior on thursday strengthening to 30.1 inches on friday. a 29.4 
inch clipper low then develops off the northern rockies late friday 
and extends a 29.6 to 29.8 inch trough into the upper great lakes by 
saturday which continues into sunday.




lsz267-072000-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
401 am edt wed oct 7 2026

.early this morning...northwest winds 15 to 25 knots. waves 2 to
4 feet. 
.today...northwest winds 15 to 25 knots becoming west 20 to
30 knots in the afternoon. a slight chance of showers and
thunderstorms by mid afternoon. waves building to 3 to 5 feet
occasionally to 7 feet. 
.tonight...northwest winds 20 to 30 knots. a chance of showers.
waves building to 3 to 6 feet occasionally to 8 feet. 
.thursday...northwest winds 20 to 30 knots increasing to 30 knots
with a few gale force gusts to 35 knots possible in the
afternoon, then diminishing to 20 to 30 knots late. a chance of
showers. waves building to 5 to 9 feet occasionally to 11 feet. 
.thursday night...northwest winds 15 to 25 knots becoming west
10 to 20 knots after midnight. a chance of showers through
midnight. waves subsiding to 1 to 3 feet. 
.friday...west winds 10 to 20 knots backing southwest by mid
afternoon. waves subsiding to calm to 2 feet. 
.friday night...south winds 10 to 20 knots becoming southeast
15 to 25 knots after midnight. waves building to 1 to 3 feet. 
.saturday...southeast winds 20 to 30 knots veering south. waves
building to 4 to 7 feet occasionally to 9 feet, then subsiding to
3 to 6 feet occasionally to 8 feet. 
.sunday...southwest winds 15 to 25 knots. waves subsiding to 2 to
4 feet, then building to 4 to 7 feet occasionally to 9 feet. 

$$