fzus63 kmqt 110801
glfls 
expires:202610112000;;901513

open lake forecast for lake superior
national weather service marquette mi
400 am edt sun oct 11 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...

lake superior is currently between a 30.5 inch high offshore of new 
england and a 29.6 inch low stretched out from northern mn through 
south dakota. through the daytime hours, the low splits and weakens 
into a pair of 29.7 inch lows, one that remains in the central 
plains and another that moves across northern ontario. this will 
drag a 29.8 inch low across lake superior tonight into monday 
morning as 30.3 inch high pressure expands across the ontario and 
manitoba shores of hudson bay. by monday night, the high will weaken 
to 30.2 inches over quebec as the plains low moves into the upper 
great lakes region at 29.7 inches. as the low escapes to new england 
tuesday into wednesday morning, a new 30.2 inch high forms over the 
dakotas, moving over lake superior at 30.3 inches wednesday night. 
thursday, the high shifts to the eastern great lakes as a 29.8 inch 
alberta clipper moves over lake winnipeg.




lsz162-112000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 am edt sun oct 11 2026 /301 am cdt sun oct 11 2026/

...gale watch in effect from late tonight through monday
evening...

.early this morning...southwest winds 15 to 25 knots. waves 2 to
4 feet. 
.today...southwest winds 10 to 20 knots diminishing to 5 to
15 knots in the afternoon. waves subsiding to calm to 2 feet. 
.tonight...northeast winds 15 to 25 knots increasing to gales to
35 knots. a slight chance of showers. waves building to 5 to
8 feet occasionally to 10 feet. 
.monday...northeast gales to 35 knots. a chance of showers. waves
building to 6 to 9 feet occasionally to 11 feet, then subsiding
to 4 to 7 feet occasionally to 9 feet. 
.monday night...northeast winds 20 to 30 knots diminishing to
15 to 25 knots after midnight. showers. waves subsiding to 3 to
5 feet occasionally to 7 feet. 
.tuesday...northeast winds 10 to 20 knots becoming north 5 to
15 knots by mid afternoon. waves subsiding to 1 to 3 feet. 
.tuesday night...northwest winds 5 to 15 knots. waves subsiding
to calm to 2 feet. 
.wednesday...northwest winds 5 to 15 knots veering east. waves
calm to 2 feet. 
.thursday...southeast winds 10 to 20 knots becoming west gales to
35 knots. a chance of showers. waves building to 2 to 4 feet. 

$$

fzus63 kmqt 110801
glfls 
expires:202610112000;;901514

open lake forecast for lake superior
national weather service marquette mi
400 am edt sun oct 11 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...

lake superior is currently between a 30.5 inch high offshore of new 
england and a 29.6 inch low stretched out from northern mn through 
south dakota. through the daytime hours, the low splits and weakens 
into a pair of 29.7 inch lows, one that remains in the central 
plains and another that moves across northern ontario. this will 
drag a 29.8 inch low across lake superior tonight into monday 
morning as 30.3 inch high pressure expands across the ontario and 
manitoba shores of hudson bay. by monday night, the high will weaken 
to 30.2 inches over quebec as the plains low moves into the upper 
great lakes region at 29.7 inches. as the low escapes to new england 
tuesday into wednesday morning, a new 30.2 inch high forms over the 
dakotas, moving over lake superior at 30.3 inches wednesday night. 
thursday, the high shifts to the eastern great lakes as a 29.8 inch 
alberta clipper moves over lake winnipeg.




lsz263-112000-
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 sun oct 11 2026

...gale watch in effect from late tonight through monday
evening...

.early this morning...south winds 15 to 25 knots. waves 3 to
5 feet occasionally to 7 feet. 
.today...southwest winds 15 to 25 knots diminishing to 10 to
20 knots in the afternoon, then veering west late. waves
subsiding to calm to 2 feet. 
.tonight...northeast winds 15 to 25 knots increasing to gales to
35 knots. a chance of showers. waves building to 5 to 8 feet
occasionally to 10 feet. 
.monday...northeast gales to 35 knots diminishing to 20 to
30 knots in the afternoon. a chance of showers. waves building to
6 to 9 feet occasionally to 11 feet, then subsiding to 4 to
7 feet occasionally to 9 feet. 
.monday night...northeast winds 20 to 30 knots diminishing to
15 to 25 knots after midnight. showers. waves subsiding to 3 to
5 feet occasionally to 7 feet. 
.tuesday...northeast winds 10 to 20 knots becoming north 5 to
15 knots by mid afternoon. waves subsiding to 1 to 3 feet. 
.tuesday night...northwest winds 5 to 15 knots. waves subsiding
to calm to 2 feet. 
.wednesday...northwest winds 5 to 15 knots veering east. waves
calm to 2 feet. 
.thursday...southeast winds 15 to 25 knots becoming west gales to
40 knots. a chance of showers. waves building to 3 to 6 feet
occasionally to 8 feet. 

$$