fzus63 kmqt 100201
glfls 
expires:202610100800;;827214

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt fri oct 9 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 30.3 inch high over the lower 
great lakes and a 29.3 inch low over southern saskatchewan. into 
saturday morning, the high will build to 30.4 inches over new york 
as the canada low weakens slightly to 29.4 inches and expands across 
the north plains. meanwhile, 29.7 inch hurricane isaias will move 
north through alabama, eventually helping to kick the high east 
through this weekend. by early sunday morning, the canada low will 
split into 2 weaker 29.7 inch lows, one settling over the central 
plains and one moving from northern minnesota to northern ontario. 
this will create weak 29.8 inch troughing over lake superior for 
sunday, deepening to 29.7 inches by monday evening. meanwhile, the 
high will shift to the new england coastline then over the atlantic, 
ushered east by the tropical remnants at 29.8 inches as they move 
into the ne conus. the colorado low crosses the great lakes basin 
early next week, followed by 30.2 inch high pressure for the midweek.




lsz162-100800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1000 pm edt fri oct 9 2026 /900 pm cdt fri oct 9 2026/

.rest of tonight...east winds 15 to 25 knots veering southeast
after midnight, then diminishing to 10 to 20 knots late. waves
3 to 6 feet occasionally to 8 feet, then subsiding to 2 to
4 feet. 
.saturday...southeast winds 10 to 20 knots increasing to 15 to
25 knots in the afternoon, then becoming south 20 to 30 knots
late. waves subsiding to 1 to 3 feet. 
.saturday night...south winds 20 to 30 knots veering southwest
after midnight, then diminishing to 15 to 25 knots late. waves
building to 3 to 6 feet occasionally to 8 feet, then subsiding to
2 to 4 feet. 
.sunday...southwest winds 10 to 20 knots diminishing to 5 to
15 knots by mid afternoon. waves subsiding to calm to 2 feet. 
.sunday night...northeast winds 10 to 20 knots increasing to
20 to 30 knots after midnight. a chance of showers. waves
building to 4 to 7 feet occasionally to 9 feet. 
.monday...northeast gales to 35 knots. a chance of showers. waves
building to 5 to 9 feet occasionally to 11 feet. 
.monday night...northeast winds 20 to 30 knots diminishing to
15 to 25 knots after midnight. showers likely through 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. waves subsiding to calm to 2 feet. 
.wednesday...east winds 5 to 15 knots increasing to 10 to
20 knots. a chance of showers. waves building to 1 to 3 feet. 

$$

fzus63 kmqt 100201
glfls 
expires:202610100800;;827215

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt fri oct 9 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 30.3 inch high over the lower 
great lakes and a 29.3 inch low over southern saskatchewan. into 
saturday morning, the high will build to 30.4 inches over new york 
as the canada low weakens slightly to 29.4 inches and expands across 
the north plains. meanwhile, 29.7 inch hurricane isaias will move 
north through alabama, eventually helping to kick the high east 
through this weekend. by early sunday morning, the canada low will 
split into 2 weaker 29.7 inch lows, one settling over the central 
plains and one moving from northern minnesota to northern ontario. 
this will create weak 29.8 inch troughing over lake superior for 
sunday, deepening to 29.7 inches by monday evening. meanwhile, the 
high will shift to the new england coastline then over the atlantic, 
ushered east by the tropical remnants at 29.8 inches as they move 
into the ne conus. the colorado low crosses the great lakes basin 
early next week, followed by 30.2 inch high pressure for the midweek.




lsz263-100800-
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 pm edt fri oct 9 2026

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

$$