fzus63 kmqt 112001
glfls 
expires:202610120800;;930988

open lake forecast for lake superior
national weather service marquette mi
401 pm 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 29.7 inch low stretched out from nebraska toward 
quebec. currently, this stretched-out low signs of splitting into a 
pair of 29.7 inch lows, one that remains in the central plains and 
another that moves eastward into quebec. as these lows get pushed 
south by 30.4 high pressure building in from manitoba and hudson 
bay, low pressure to 29.8 inches transits south across lake 
superior, and southerly winds shift to northeasterly. 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 early thursday morning. 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 impressive 30.7 high pressure reaching 
from nunavut to texas. 




lsz162-120800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 pm edt sun oct 11 2026 /301 pm cdt sun oct 11 2026/

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

.late this afternoon...southwest winds 5 to 15 knots. waves calm
to 2 feet. 
.tonight...northeast winds 15 to 25 knots increasing to gales to
35 knots. a slight chance of showers after midnight. waves
building to 6 to 9 feet occasionally to 11 feet. 
.monday...northeast gales to 40 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 gales to 35 knots diminishing to 20 to
30 knots late. a slight chance of thunderstorms through midnight.
a chance of showers. waves subsiding to 3 to 6 feet occasionally
to 8 feet. 
.tuesday...northeast winds 10 to 20 knots becoming west 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 increasing to
10 to 20 knots after midnight. waves subsiding to calm to 2 feet.
.wednesday...northwest winds 10 to 20 knots becoming west 5 to
15 knots by mid afternoon. waves calm to 2 feet. 
.wednesday night...north winds 5 to 15 knots veering east after
midnight. waves calm to 2 feet. 
.thursday...south winds 5 to 15 knots becoming west gales to
40 knots. a chance of showers. waves building to 4 to 7 feet
occasionally to 9 feet. 
.friday...northwest gales to 45 knots. waves building to 7 to
10 feet occasionally to 13 feet, then subsiding to 3 to 5 feet
occasionally to 7 feet. 

$$

fzus63 kmqt 112001
glfls 
expires:202610120800;;930989

open lake forecast for lake superior
national weather service marquette mi
401 pm 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 29.7 inch low stretched out from nebraska toward 
quebec. currently, this stretched-out low signs of splitting into a 
pair of 29.7 inch lows, one that remains in the central plains and 
another that moves eastward into quebec. as these lows get pushed 
south by 30.4 high pressure building in from manitoba and hudson 
bay, low pressure to 29.8 inches transits south across lake 
superior, and southerly winds shift to northeasterly. 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 early thursday morning. 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 impressive 30.7 high pressure reaching 
from nunavut to texas. 




lsz263-120800-
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 pm edt sun oct 11 2026

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

.late this afternoon...west winds 5 to 15 knots. waves calm to
2 feet. 
.tonight...northeast winds 15 to 25 knots increasing to gales to
35 knots. a slight chance of showers after midnight. waves
building to 6 to 9 feet occasionally to 11 feet. 
.monday...northeast gales to 35 knots diminishing to 20 to
30 knots late. 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. a slight chance
of thunderstorms through midnight. a chance of showers. waves
subsiding to 3 to 6 feet occasionally to 8 feet. 
.tuesday...northeast winds 10 to 20 knots becoming northwest 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. waves calm to 2 feet.
.wednesday night...north winds 5 to 15 knots veering east after
midnight. waves calm to 2 feet. 
.thursday...south winds 15 to 25 knots becoming west gales to
40 knots. a chance of rain showers. waves building to 7 to
10 feet occasionally to 13 feet. 
.friday...north gales to 45 knots. waves building to 10 to
14 feet occasionally to 18 feet, then subsiding to 6 to 9 feet
occasionally to 11 feet. 

$$