fzus63 kmqt 061403
glfls 
expires:202610062000;;629656

open lake forecast for lake superior
national weather service marquette mi
1002 am edt tue oct 6 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 29.5 inch low moving over far northern ontario at 29.4 inches this 
evening will bring 29.6 inch troughing over lake superior this 
afternoon. troughing will weaken to 29.7 inches over the lake 
through wednesday. high pressure 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 29.9 inch trough into the 
upper great lakes by saturday.




lsz162-062000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1002 am edt tue oct 6 2026 /902 am cdt tue oct 6 2026/

.rest of today...south winds 15 to 25 knots veering west late.
waves 1 to 3 feet. 
.tonight...west winds 10 to 20 knots. waves subsiding to calm to
2 feet. 
.wednesday...west winds 10 to 20 knots increasing to 15 to
25 knots in the afternoon. a slight chance of showers by mid
afternoon. waves building to 2 to 4 feet. 
.wednesday night...northwest winds 10 to 20 knots. waves
subsiding to 1 to 3 feet. 
.thursday...west winds 10 to 20 knots. waves subsiding to calm to
2 feet. 
.thursday night...west winds 5 to 15 knots. waves calm to 2 feet.
.friday...west winds 5 to 15 knots becoming southeast 10 to
20 knots. waves building to 1 to 3 feet. 
.saturday...southeast winds 20 to 30 knots veering southwest.
waves building to 3 to 6 feet occasionally to 8 feet. 

$$

fzus63 kmqt 061403
glfls 
expires:202610062000;;629657

open lake forecast for lake superior
national weather service marquette mi
1002 am edt tue oct 6 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 29.5 inch low moving over far northern ontario at 29.4 inches this 
evening will bring 29.6 inch troughing over lake superior this 
afternoon. troughing will weaken to 29.7 inches over the lake 
through wednesday. high pressure 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 29.9 inch trough into the 
upper great lakes by saturday.




lsz263-062000-
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-
1002 am edt tue oct 6 2026

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

$$