fzus63 kmqt 090801
glfls 
expires:202507092000;;132481

open lake forecast for lake superior
national weather service marquette mi
401 am edt wed jul 9 2025

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 weak 30.0 to 30.1 inch ridge stays in place over lake superior 
through thursday. ridging is eventually pushed east by a 29.7 inch 
phasing lows over the canadian prairies and northern plains on 
friday, with the phased low deepening to 29.6 inches over northern 
ontario by saturday as 29.7 inch troughing moves over lake superior. 
weak ridging of at least 29.8 inches then returns to lake superior 
sunday morning.



lsz162-092000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 am edt wed jul 9 2025 /301 am cdt wed jul 9 2025/

.early this morning...northwest winds 5 to 15 knots. patchy fog.
waves calm to 2 feet. 
.today...east winds 5 to 15 knots veering west in the afternoon.
waves calm to 2 feet. 
.tonight...east winds 5 to 15 knots diminishing to less than
10 knots after midnight, then increasing to 5 to 15 knots late.
waves calm to 2 feet. 
.thursday...east winds 5 to 15 knots backing northeast late.
waves calm to 2 feet. 
.thursday night...northeast winds 5 to 15 knots. a chance of
showers and a slight chance of thunderstorms after midnight.
waves calm to 2 feet. 
.friday...east winds 5 to 15 knots increasing to 10 to 20 knots
by mid afternoon. a chance of showers through early afternoon. a
chance of thunderstorms. showers likely by mid afternoon. waves
calm to 2 feet. 
.friday night...northeast winds 10 to 20 knots backing north
after midnight. showers likely through midnight. a chance of
thunderstorms. a chance of showers after midnight. waves calm to
2 feet. 
.saturday...west winds 10 to 20 knots. waves calm to 2 feet. 
.sunday...southwest winds 10 to 20 knots. a chance of showers.
waves calm to 2 feet. 

$$

fzus63 kmqt 090801
glfls 
expires:202507092000;;132482

open lake forecast for lake superior
national weather service marquette mi
401 am edt wed jul 9 2025

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 weak 30.0 to 30.1 inch ridge stays in place over lake superior 
through thursday. ridging is eventually pushed east by a 29.7 inch 
phasing lows over the canadian prairies and northern plains on 
friday, with the phased low deepening to 29.6 inches over northern 
ontario by saturday as 29.7 inch troughing moves over lake superior. 
weak ridging of at least 29.8 inches then returns to lake superior 
sunday morning.



lsz263-092000-
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 wed jul 9 2025

.early this morning...northwest winds less than 10 knots. patchy
dense fog. waves calm to 2 feet. 
.today...northwest winds less than 10 knots backing west late.
waves calm to 2 feet. 
.tonight...west winds less than 10 knots backing southwest after
midnight. waves calm to 2 feet. 
.thursday...east winds less than 10 knots increasing to 5 to
15 knots in the afternoon. waves calm to 2 feet. 
.thursday night...east winds 5 to 15 knots veering south after
midnight. a slight chance of showers and thunderstorms after
midnight. waves calm to 2 feet. 
.friday...south winds 5 to 15 knots backing east by mid
afternoon. a chance of showers. waves calm to 2 feet. 
.friday night...east winds 5 to 15 knots backing northeast after
midnight. showers likely and a chance of thunderstorms. waves
calm to 2 feet. 
.saturday...west winds 5 to 15 knots. a chance of showers. waves
calm to 2 feet. 
.sunday...southwest winds 10 to 20 knots diminishing to 5 to
15 knots. a chance of showers. waves calm to 2 feet. 

$$