fzus63 kmqt 151501
glfls 
expires:202611152100;;869831

open lake forecast for lake superior
national weather service marquette mi
1000 am est sun nov 15 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...

high pressure extending from ontario into the mississippi river 
valley builds from 30.3 inches to 30.4 inches into tomorrow as it 
marches slowly east, becoming centered over illinois by late sunday. 
this sends ridging at 30.3 inches over lake superior through the 
weekend. ridging continues to build to 30.6 inches, shifting 
southeast and reaching west virginia by late tuesday. pressure falls 
slightly over lake superior, decreasing to 30.1 inches along the 
northwestern shoreline of lake superior, and remaining at 30.3 
inches near whitefish bay, by late monday. the high lingers over the 
mid-atlantic at 30.5 inches into wednesday as pressure continues to 
fall slowly lake superior, reaching 29.9 inches in the west and 30.2 
inches in the east by wednesday afternoon. pressure over lake 
superior then falls abruptly through thursday as a colorado low 
approaches northern minnesota late wednesday and tracks directly 
over lake superior at 29.8 inches on thursday. the low transits 
quickly northeast, and pressure begins to increase over lake supeior 
by early friday. 




lsz162-152100-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1000 am est sun nov 15 2026 /900 am cst sun nov 15 2026/

.rest of today...southwest winds 10 to 20 knots diminishing to
5 to 15 knots. waves calm to 2 feet. 
.tonight...southwest winds 10 to 20 knots increasing to 15 to
25 knots by midnight. waves building to 3 to 5 feet occasionally
to 7 feet. 
.monday...southwest winds 20 to 30 knots. waves building to 4 to
8 feet occasionally to 10 feet. 
.monday night...southwest winds 20 to 30 knots. waves subsiding
to 3 to 6 feet occasionally to 8 feet. 
.tuesday...southwest winds 20 to 30 knots diminishing to 15 to
25 knots in the afternoon. waves subsiding to 2 to 4 feet. 
.tuesday night...southwest winds 15 to 25 knots. waves subsiding
to 1 to 3 feet, then building to 2 to 4 feet. 
.wednesday...south winds 15 to 25 knots. waves subsiding to 1 to
3 feet, then building to 2 to 4 feet. 
.thursday...west winds 20 to 30 knots becoming northwest 5 to
15 knots. a chance of rain showers. waves building to 3 to 6 feet
occasionally to 8 feet, then subsiding to calm to 2 feet. 

$$

fzus63 kmqt 151501
glfls 
expires:202611152100;;869832

open lake forecast for lake superior
national weather service marquette mi
1000 am est sun nov 15 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...

high pressure extending from ontario into the mississippi river 
valley builds from 30.3 inches to 30.4 inches into tomorrow as it 
marches slowly east, becoming centered over illinois by late sunday. 
this sends ridging at 30.3 inches over lake superior through the 
weekend. ridging continues to build to 30.6 inches, shifting 
southeast and reaching west virginia by late tuesday. pressure falls 
slightly over lake superior, decreasing to 30.1 inches along the 
northwestern shoreline of lake superior, and remaining at 30.3 
inches near whitefish bay, by late monday. the high lingers over the 
mid-atlantic at 30.5 inches into wednesday as pressure continues to 
fall slowly lake superior, reaching 29.9 inches in the west and 30.2 
inches in the east by wednesday afternoon. pressure over lake 
superior then falls abruptly through thursday as a colorado low 
approaches northern minnesota late wednesday and tracks directly 
over lake superior at 29.8 inches on thursday. the low transits 
quickly northeast, and pressure begins to increase over lake supeior 
by early friday. 




lsz263-152100-
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-
1000 am est sun nov 15 2026

.rest of today...southwest winds 5 to 15 knots increasing to
10 to 20 knots by mid afternoon. waves calm to 2 feet building to
1 to 3 feet. 
.tonight...southwest winds 10 to 20 knots increasing to 15 to
25 knots by midnight. waves building to 3 to 6 feet occasionally
to 8 feet. 
.monday...southwest winds 20 to 30 knots increasing to 30 knots
with a few gale force gusts to 35 knots possible. waves building
to 4 to 8 feet occasionally to 10 feet. 
.monday night...southwest winds 20 to 30 knots. waves subsiding
to 3 to 6 feet occasionally to 8 feet, then building to 4 to
7 feet occasionally to 9 feet. 
.tuesday...southwest winds 20 to 30 knots. waves subsiding to
2 to 4 feet. 
.tuesday night...southwest winds 15 to 25 knots. waves building
to 3 to 5 feet occasionally to 7 feet. 
.wednesday...southwest winds 15 to 25 knots backing south. waves
subsiding to 1 to 3 feet, then building to 2 to 4 feet. 
.thursday...west winds 20 to 30 knots becoming northwest 15 to
25 knots. a chance of rain showers. waves building to 5 to 8 feet
occasionally to 10 feet, then subsiding to calm to 2 feet. 

$$