fzus63 kmqt 242001
glfls 
expires:202610250800;;123809

open lake forecast for lake superior
national weather service marquette mi
400 pm edt sat oct 24 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...

30.4 inch high pressure remains sprawled out over the northeast us, 
while a 29.8 inch shortwave trough moving towards hudson bay drags a 
weak 30.1 inch trough towards lake superior. the trough remains over 
the lake the first half of the night before lifting northward. high 
pressure of 30.6 inches over the canadian prairies on sunday pushes 
ridging of 30.4 inches over the upper great lakes. high pressure 
becomes centered over northern ontario at 30.5 inches monday into 
tuesday. a weak 30.0 inch low lifts north over minnesota on tuesday. 
then, a 29.8 inch low quickly follows a similar northeast track over 
the dakotas/northwestern minnesota tuesday night into wednesday 
while the high moves to new england. the low then tracks northeast 
over northern ontario on wednesday.




lsz162-250800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 pm edt sat oct 24 2026 /300 pm cdt sat oct 24 2026/

.late this afternoon...southwest winds 15 to 25 knots. a chance
of showers. waves 1 to 3 feet. 
.tonight...west winds 10 to 20 knots. a chance of showers through
midnight. waves subsiding to calm to 2 feet. 
.sunday...west winds 5 to 15 knots increasing to 10 to 20 knots
in the afternoon. waves building to 1 to 3 feet. 
.sunday night...northwest winds 10 to 20 knots veering north
after midnight. waves subsiding to calm to 2 feet. 
.monday...northeast winds 10 to 20 knots veering east by mid
afternoon. waves calm to 2 feet. 
.monday night...east winds 10 to 20 knots increasing to 15 to
25 knots after midnight. a chance of rain showers. waves building
to 2 to 4 feet. 
.tuesday...east winds 15 to 25 knots. rain showers. waves
building to 3 to 5 feet occasionally to 7 feet. 
.tuesday night...east winds 15 to 25 knots becoming southeast
5 to 15 knots after midnight. a chance of showers through
midnight, then showers likely after midnight. waves subsiding to
1 to 3 feet. 
.wednesday...southwest winds 10 to 20 knots veering west. a
chance of showers. waves building to 2 to 4 feet, then subsiding
to 1 to 3 feet. 
.thursday...west winds 10 to 20 knots becoming northwest 5 to
15 knots. waves subsiding to calm to 2 feet. 

$$

fzus63 kmqt 242001
glfls 
expires:202610250800;;123810

open lake forecast for lake superior
national weather service marquette mi
400 pm edt sat oct 24 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...

30.4 inch high pressure remains sprawled out over the northeast us, 
while a 29.8 inch shortwave trough moving towards hudson bay drags a 
weak 30.1 inch trough towards lake superior. the trough remains over 
the lake the first half of the night before lifting northward. high 
pressure of 30.6 inches over the canadian prairies on sunday pushes 
ridging of 30.4 inches over the upper great lakes. high pressure 
becomes centered over northern ontario at 30.5 inches monday into 
tuesday. a weak 30.0 inch low lifts north over minnesota on tuesday. 
then, a 29.8 inch low quickly follows a similar northeast track over 
the dakotas/northwestern minnesota tuesday night into wednesday 
while the high moves to new england. the low then tracks northeast 
over northern ontario on wednesday.




lsz263-250800-
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-
400 pm edt sat oct 24 2026

.late this afternoon...southwest winds 10 to 20 knots. a chance
of showers. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.tonight...west winds 15 to 25 knots diminishing to 5 to
15 knots. a chance of showers through midnight. waves subsiding
to calm to 2 feet. 
.sunday...west winds 5 to 15 knots increasing to 10 to 20 knots
in the afternoon. waves building to 2 to 4 feet. 
.sunday night...northwest winds 5 to 15 knots becoming north
10 to 20 knots after midnight. waves subsiding to 1 to 3 feet. 
.monday...northeast winds 5 to 15 knots. waves subsiding to calm
to 2 feet. 
.monday night...east winds 5 to 15 knots. waves building to 1 to
3 feet. 
.tuesday...east winds 10 to 20 knots increasing to 15 to 25 knots
by mid afternoon. rain showers likely. waves building to 2 to
4 feet. 
.tuesday night...southeast winds 15 to 25 knots becoming south
10 to 20 knots after midnight. a chance of showers. waves
building to 3 to 5 feet occasionally to 7 feet, then subsiding to
2 to 4 feet. 
.wednesday...south winds 15 to 25 knots veering west. a chance of
showers. waves building to 3 to 5 feet occasionally to 7 feet. 
.thursday...west winds 15 to 25 knots becoming northwest 5 to
15 knots. waves subsiding to calm to 2 feet. 

$$