fzus63 kmqt 111401
glfls 
expires:202610112000;;915177

open lake forecast for lake superior
national weather service marquette mi
1001 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 nebraska toward james 
bay. throughout today, the low splits and weakens into a pair of 
29.7 inch lows, one that remains in the central plains and another 
that moves eastward into quebec. 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 toward new england as a 29.8 inch alberta clipper 
swings southeast through manitoba. the alberta clipper tracks over 
lake superior friday morning, followed closely by massive high 
pressure reaching from nunavut to texas. 




lsz162-112000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1001 am edt sun oct 11 2026 /901 am cdt sun oct 11 2026/

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

.rest of today...southwest winds 10 to 20 knots diminishing to
5 to 15 knots in the afternoon. waves 2 to 4 feet 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 6 to
9 feet occasionally to 11 feet. 
.monday...northeast gales to 35 knots. a chance of showers. waves
building to 8 to 11 feet occasionally to 14 feet, then subsiding
to 6 to 9 feet occasionally to 11 feet. 
.monday night...northeast winds 20 to 30 knots diminishing to
15 to 25 knots after midnight. showers. waves subsiding to 3 to
6 feet occasionally to 8 feet. 
.tuesday...northeast winds 10 to 20 knots becoming north 5 to
15 knots by mid afternoon. a slight chance of showers through
early 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 4 to 7 feet
occasionally to 9 feet. 

$$

fzus63 kmqt 111401
glfls 
expires:202610112000;;915178

open lake forecast for lake superior
national weather service marquette mi
1001 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 nebraska toward james 
bay. throughout today, the low splits and weakens into a pair of 
29.7 inch lows, one that remains in the central plains and another 
that moves eastward into quebec. 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 toward new england as a 29.8 inch alberta clipper 
swings southeast through manitoba. the alberta clipper tracks over 
lake superior friday morning, followed closely by massive high 
pressure reaching from nunavut to texas. 




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-
1001 am edt sun oct 11 2026

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

.rest of today...southwest winds 10 to 20 knots veering west
late. waves 2 to 4 feet 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 6 to 9 feet
occasionally to 11 feet. 
.monday...northeast gales to 35 knots diminishing to 20 to
30 knots in the afternoon. a chance of showers. waves building to
8 to 11 feet occasionally to 14 feet, then subsiding to 6 to
9 feet occasionally to 11 feet. 
.monday night...northeast winds 20 to 30 knots diminishing to
15 to 25 knots after midnight. showers. waves subsiding to 3 to
6 feet occasionally to 8 feet. 
.tuesday...northeast winds 10 to 20 knots becoming north 5 to
15 knots by mid afternoon. a slight chance of showers through
early 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 7 to 10 feet
occasionally to 13 feet. 

$$