fzus63 kmqt 102001
glfls 
expires:202610110800;;873454

open lake forecast for lake superior
national weather service marquette mi
401 pm edt sat oct 10 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 30.4 inch high over new england 
and a 29.4 inch low elongated from the red river valley of the north 
to wyoming. as the high is kicked east by the remnants of hurricane 
isaias on sunday, the aforementioned 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 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.




lsz162-110800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 pm edt sat oct 10 2026 /301 pm cdt sat oct 10 2026/

.late this afternoon...south winds 20 to 30 knots. waves 1 to
3 feet. 
.tonight...south winds 20 to 30 knots veering southwest after
midnight, then diminishing to 15 to 25 knots late. waves building
to 3 to 5 feet occasionally to 7 feet, then subsiding to 2 to
4 feet. 
.sunday...southwest winds 10 to 20 knots diminishing to 5 to
15 knots in the afternoon, then veering north late. waves
subsiding to calm to 2 feet. 
.sunday night...northeast winds 15 to 25 knots increasing to
30 knots with a few gale force gusts to 35 knots possible. a
slight chance of showers after midnight. waves building to 5 to
8 feet occasionally to 10 feet. 
.monday...northeast gales to 35 knots. a chance of showers. waves
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 through midnight, then a
chance of showers after midnight. 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...east winds 10 to 20 knots becoming southeast 20 to
30 knots. a chance of showers. waves building to 2 to 4 feet. 

$$

fzus63 kmqt 102001
glfls 
expires:202610110800;;873455

open lake forecast for lake superior
national weather service marquette mi
401 pm edt sat oct 10 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 30.4 inch high over new england 
and a 29.4 inch low elongated from the red river valley of the north 
to wyoming. as the high is kicked east by the remnants of hurricane 
isaias on sunday, the aforementioned 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 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.




lsz263-110800-
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 sat oct 10 2026

.late this afternoon...south winds 20 to 30 knots. waves 3 to
6 feet occasionally to 8 feet. 
.tonight...south winds 20 to 30 knots becoming southwest 15 to
25 knots late. waves building to 3 to 6 feet occasionally to
8 feet. 
.sunday...southwest winds 15 to 25 knots diminishing to 10 to
20 knots in the afternoon, then becoming north 5 to 15 knots
late. waves subsiding to calm to 2 feet. 
.sunday night...northeast winds 15 to 25 knots increasing to
30 knots with a few gale force gusts to 35 knots possible. a
chance of showers after midnight. 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 15 to 25 knots becoming south gales
to 35 knots. a chance of showers. waves building to 3 to 6 feet
occasionally to 8 feet. 

$$