fzus63 kmqt 100801
glfls 
expires:202610102000;;843521

open lake forecast for lake superior
national weather service marquette mi
401 am 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 york 
state and a 29.4 inch low over southern saskatchewan. the low slowly 
weakens to 29.6 inches while tracking eastward into ontario today 
into tonight. meanwhile, 29.7 inch hurricane isaias will move north 
through alabama, eventually helping to kick the high eastward off 
the atlantic coast by early sunday. 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. 
the colorado low crosses the great lakes basin early next week, 
followed by 30.2 inch high pressure for the midweek.




lsz162-102000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 am edt sat oct 10 2026 /301 am cdt sat oct 10 2026/

.early this morning...east winds 10 to 20 knots. waves 2 to
4 feet. 
.today...east 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. 
.tonight...south winds to 30 knots with a few gale force gusts to
35 knots possible 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 backing northeast late. waves
subsiding to calm to 2 feet. 
.sunday night...northeast winds 15 to 25 knots increasing to
20 to 30 knots after midnight. a slight 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 7 to 10 feet occasionally to 13 feet, then subsiding
to 5 to 8 feet occasionally to 10 feet. 
.monday night...northeast winds 20 to 30 knots. 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...northwest winds 5 to 15 knots becoming east 10 to
20 knots. waves building to 1 to 3 feet. 

$$

fzus63 kmqt 100801
glfls 
expires:202610102000;;843522

open lake forecast for lake superior
national weather service marquette mi
401 am 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 york 
state and a 29.4 inch low over southern saskatchewan. the low slowly 
weakens to 29.6 inches while tracking eastward into ontario today 
into tonight. meanwhile, 29.7 inch hurricane isaias will move north 
through alabama, eventually helping to kick the high eastward off 
the atlantic coast by early sunday. 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. 
the colorado low crosses the great lakes basin early next week, 
followed by 30.2 inch high pressure for the midweek.




lsz263-102000-
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 am edt sat oct 10 2026

.early this morning...southeast winds 15 to 25 knots. waves 3 to
6 feet occasionally to 8 feet. 
.today...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. 
.tonight...south winds 20 to 30 knots veering southwest after
midnight. waves building to 3 to 6 feet occasionally to 8 feet. 
.sunday...southwest winds 10 to 20 knots becoming west 5 to
15 knots late. waves subsiding to calm to 2 feet. 
.sunday night...northeast winds 15 to 25 knots increasing to
gales to 35 knots after midnight. 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 7 to 10 feet occasionally to 13 feet, then subsiding
to 5 to 8 feet occasionally to 10 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 northwest 5 to
15 knots. waves subsiding to calm to 2 feet. 
.wednesday...northwest winds 5 to 15 knots becoming east 10 to
20 knots. waves building to 1 to 3 feet. 

$$