fzus63 kmqt 240800
glfls 
expires:202610242000;;095677

open lake forecast for lake superior
national weather service marquette mi
400 am 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...

a 30.5 inch high pressure over new england is extending a 30.2 inch 
ridge over lake superior this morning. by this afternoon, a 29.2 
inch low over northern manitoba drags a 30.1 inch trough over the 
west half of lake superior. the trough remains over the lake until 
tonight. high pressure of 30.6 inches over the canadian prairies on 
sunday pushes ridging of 30.4 inches over the upper great lakes. the 
high pressure moves 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.




lsz162-242000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 am edt sat oct 24 2026 /300 am cdt sat oct 24 2026/

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

$$

fzus63 kmqt 240800
glfls 
expires:202610242000;;095678

open lake forecast for lake superior
national weather service marquette mi
400 am 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...

a 30.5 inch high pressure over new england is extending a 30.2 inch 
ridge over lake superior this morning. by this afternoon, a 29.2 
inch low over northern manitoba drags a 30.1 inch trough over the 
west half of lake superior. the trough remains over the lake until 
tonight. high pressure of 30.6 inches over the canadian prairies on 
sunday pushes ridging of 30.4 inches over the upper great lakes. the 
high pressure moves 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.




lsz263-242000-
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 am edt sat oct 24 2026

.early this morning...south winds 10 to 20 knots. a chance of
showers. waves 1 to 3 feet building to 2 to 4 feet. 
.today...south winds 15 to 25 knots becoming southwest 10 to
20 knots late. a chance of showers. waves building to 3 to 5 feet
occasionally to 7 feet, then subsiding to 2 to 4 feet. 
.tonight...west winds 15 to 25 knots diminishing to 5 to
15 knots. a chance of showers through midnight. waves subsiding
to 1 to 3 feet. 
.sunday...west winds 10 to 20 knots. waves building to 2 to
4 feet. 
.sunday night...northwest winds 10 to 20 knots veering north
after midnight. waves subsiding to 1 to 3 feet. 
.monday...north winds 5 to 15 knots veering northeast by mid
afternoon. waves subsiding to calm to 2 feet. 
.monday night...east winds 5 to 15 knots. waves calm to 2 feet. 
.tuesday...east winds 10 to 20 knots veering southeast. a chance
of rain showers. waves building to 1 to 3 feet. 
.wednesday...south winds 10 to 20 knots becoming southwest gales
to 35 knots. showers likely. waves building to 5 to 8 feet
occasionally to 10 feet. 

$$