fzus63 kmqt 080809 cca
glfls 
expires:202610082000;;726216

open lake forecast for lake superior...corrected
national weather service marquette mi
409 am edt thu oct 8 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...

ridging steadily builds to 30.0 inches today as the 30.1 inch parent 
high digs from the northern plains into the mid-atlantic today and 
tonight. the parent high strengthens to 30.3 inches tonight, 
allowing ridging over lake superior to increase 30.2 inches. a 29.3 
inch clipper over southern alberta on friday night splits and 
creates a 29.4 inch low over the northern plains and canadian 
prairies by saturday. this low is expected to bring 29.6 to 29.9 
inch troughing back over lake superior on saturday, which flattens 
out to around 29.8 inch troughing by sunday as the low weakens to 
29.6 inches near lake winnipeg by the end of the weekend. a subtle 
29.7 inch shortwave low moves over the lake sunday night and monday.




lsz162-082000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
409 am edt thu oct 8 2026 /309 am cdt thu oct 8 2026/

.early this morning...west winds 10 to 20 knots. waves calm to
2 feet building to 1 to 3 feet. 
.today...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, then building to 1 to 3 feet. 
.tonight...west winds 5 to 15 knots becoming southwest less than
10 knots late. waves calm to 2 feet. 
.friday...east winds less than 10 knots increasing to 10 to
20 knots. waves calm to 2 feet. 
.friday night...east winds 10 to 20 knots veering southeast after
midnight. waves building to 3 to 5 feet occasionally to 7 feet,
then subsiding to 2 to 4 feet. 
.saturday...south winds 15 to 25 knots increasing to 20 to
30 knots by mid afternoon. waves subsiding to 1 to 3 feet, then
building to 2 to 4 feet. 
.saturday night...southwest winds 20 to 30 knots. waves building
to 3 to 6 feet occasionally to 8 feet. 
.sunday...southwest winds 10 to 20 knots becoming north 15 to
25 knots. showers likely. waves subsiding to calm to 2 feet, then
building to 2 to 4 feet. 
.monday...north winds 15 to 25 knots. a chance of showers. waves
building to 3 to 5 feet occasionally to 7 feet, then subsiding to
2 to 4 feet. 

$$

fzus63 kmqt 080809 cca
glfls 
expires:202610082000;;726217

open lake forecast for lake superior...corrected
national weather service marquette mi
409 am edt thu oct 8 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...

ridging steadily builds to 30.0 inches today as the 30.1 inch parent 
high digs from the northern plains into the mid-atlantic today and 
tonight. the parent high strengthens to 30.3 inches tonight, 
allowing ridging over lake superior to increase 30.2 inches. a 29.3 
inch clipper over southern alberta on friday night splits and 
creates a 29.4 inch low over the northern plains and canadian 
prairies by saturday. this low is expected to bring 29.6 to 29.9 
inch troughing back over lake superior on saturday, which flattens 
out to around 29.8 inch troughing by sunday as the low weakens to 
29.6 inches near lake winnipeg by the end of the weekend. a subtle 
29.7 inch shortwave low moves over the lake sunday night and monday.




lsz263-082000-
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-
409 am edt thu oct 8 2026

.early this morning...west winds 15 to 25 knots. waves 3 to
5 feet occasionally to 7 feet. 
.today...west winds 15 to 25 knots. waves building to 3 to 6 feet
occasionally to 8 feet, then subsiding to 2 to 4 feet. 
.tonight...west winds 5 to 15 knots veering northwest after
midnight, then backing southwest late. waves subsiding to calm to
2 feet. 
.friday...south winds less than 10 knots becoming southeast 5 to
15 knots in the afternoon, then becoming east 10 to 20 knots
late. waves calm to 2 feet. 
.friday night...southeast winds 15 to 25 knots diminishing to
10 to 20 knots after midnight. waves building to 3 to 5 feet
occasionally to 7 feet. 
.saturday...south winds 15 to 25 knots increasing to 20 to
30 knots by mid afternoon. waves subsiding to 2 to 4 feet. 
.saturday night...southwest winds 20 to 30 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 15 to 25 knots veering north. a chance
of showers. waves subsiding to 1 to 3 feet, then building to 3 to
5 feet occasionally to 7 feet. 
.monday...north winds 20 to 30 knots. rain showers likely. waves
building to 3 to 6 feet occasionally to 8 feet. 

$$