fzus63 kmqt 060917 cca
glfls 
expires:202610062000;;620194

open lake forecast for lake superior...corrected
national weather service marquette mi
517 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 dropping southeast into far northern ontario at 29.4 
inches this evening will bring 29.6 inch troughing over lake 
superior starting late this afternoon. this troughing over lake 
superior progressively weakens to 29.7 inches through wednesday. 
high pressure then builds back in from the canadian prairies and 
northern plains late in the work week, resulting in 30.1 to 30.2 
inch ridging over lake superior late thursday into 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-
517 am edt tue oct 6 2026 /417 am cdt tue oct 6 2026/

.early this morning...southeast winds 10 to 20 knots. a slight
chance of showers. waves 1 to 3 feet. 
.today...south winds 15 to 25 knots veering west late. waves
building to 2 to 4 feet, then subsiding to 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 060917 cca
glfls 
expires:202610062000;;620195

open lake forecast for lake superior...corrected
national weather service marquette mi
517 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 dropping southeast into far northern ontario at 29.4 
inches this evening will bring 29.6 inch troughing over lake 
superior starting late this afternoon. this troughing over lake 
superior progressively weakens to 29.7 inches through wednesday. 
high pressure then builds back in from the canadian prairies and 
northern plains late in the work week, resulting in 30.1 to 30.2 
inch ridging over lake superior late thursday into 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-
517 am edt tue oct 6 2026

.early this morning...south winds 10 to 20 knots. a slight chance
of showers. waves 1 to 3 feet building to 2 to 4 feet. 
.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 through early afternoon. waves building to 3 to
5 feet occasionally to 7 feet, then 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. 

$$