fzus63 kmqt 071401
glfls 
expires:202608072000;;772164

open lake forecast for lake superior
national weather service marquette mi
1001 am edt fri aug 7 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 passing cold front brings 29.8 inch troughing across the lake 
today and tonight before 29.9 inch ridging returns saturday. while 
some weak 29.8 inch troughing could be seen over lake superior 
saturday night, weak 29.9 inch ridging settles once again over the 
lake sunday and monday. a weak 29.8 inch trough potentially passes 
through sunday evening. the high pressure ridging could increase to 
30.0 inches by tuesday. 




lsz162-072000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1001 am edt fri aug 7 2026 /901 am cdt fri aug 7 2026/

.rest of today...southwest winds 10 to 20 knots. a chance of
showers and a slight chance of thunderstorms. waves calm to
2 feet. 
.tonight...west winds 10 to 20 knots becoming northwest 5 to
15 knots after midnight, then becoming west 10 to 20 knots late.
waves calm to 2 feet. 
.saturday...west winds 10 to 20 knots backing southwest in the
afternoon. waves building to 1 to 3 feet. 
.saturday night...west winds 5 to 15 knots. a slight chance of
thunderstorms through midnight. a chance of showers. waves
subsiding to calm to 2 feet. 
.sunday...west winds 5 to 15 knots backing south by mid
afternoon. waves calm to 2 feet. 
.sunday night...west winds 5 to 15 knots veering northwest after
midnight. waves calm to 2 feet. 
.monday...southwest winds 5 to 15 knots veering northwest. waves
calm to 2 feet. 
.tuesday...southwest winds 5 to 15 knots veering northwest. waves
calm to 2 feet. 

$$

fzus63 kmqt 071401
glfls 
expires:202608072000;;772165

open lake forecast for lake superior
national weather service marquette mi
1001 am edt fri aug 7 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 passing cold front brings 29.8 inch troughing across the lake 
today and tonight before 29.9 inch ridging returns saturday. while 
some weak 29.8 inch troughing could be seen over lake superior 
saturday night, weak 29.9 inch ridging settles once again over the 
lake sunday and monday. a weak 29.8 inch trough potentially passes 
through sunday evening. the high pressure ridging could increase to 
30.0 inches by tuesday. 




lsz263-072000-
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-
1001 am edt fri aug 7 2026

.rest of today...southwest winds 10 to 20 knots diminishing to
5 to 15 knots late. a chance of showers by late morning. a chance
of thunderstorms. showers likely by mid afternoon. waves 1 to
3 feet subsiding to calm to 2 feet. 
.tonight...west winds 5 to 15 knots veering northwest after
midnight, then backing west late. a slight chance of showers
through midnight. waves calm to 2 feet. 
.saturday...west winds 5 to 15 knots becoming southwest 15 to
25 knots in the afternoon. waves building to 2 to 4 feet, then
subsiding to 1 to 3 feet. 
.saturday night...southwest winds 10 to 20 knots becoming west
5 to 15 knots after midnight. a chance of showers. a slight
chance of thunderstorms after midnight. waves subsiding to calm
to 2 feet. 
.sunday...west winds 5 to 15 knots backing southwest by mid
afternoon. waves calm to 2 feet. 
.sunday night...southwest winds 5 to 15 knots becoming west less
than 10 knots after midnight. waves calm to 2 feet. 
.monday...west winds 5 to 15 knots. waves calm to 2 feet. 
.tuesday...west winds 10 to 20 knots diminishing to 5 to
15 knots. waves calm to 2 feet. 

$$