fzus63 kmqt 080202
glfls 
expires:202608080800;;801939

open lake forecast for lake superior
national weather service marquette mi
1002 pm 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 to lake superior 
tonight. on saturday, a 29.5 inch quebec low and a 30.0 inch four 
corners high drive weak and ill-defined 29.9 inch ridging/troughing 
over lake superior through monday night. weak ridging of 30.0 
inches, extending beween a 30.2 inch bermuda high and 30.0 inch 
ridging over the western canadian provinces, returns for monday and 
tuesday before decreasing to 29.9 inches on wednesday.




lsz162-080800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1002 pm edt fri aug 7 2026 /902 pm cdt fri aug 7 2026/

.rest of tonight...northwest winds 10 to 20 knots backing west
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...southwest winds 5 to 15 knots veering west
after midnight. a chance of showers and a slight chance of
thunderstorms. waves subsiding to calm to 2 feet. 
.sunday...west winds 5 to 15 knots backing south by mid
afternoon. a slight chance of showers through early afternoon.
waves calm to 2 feet. 
.sunday night...west winds 5 to 15 knots veering northwest after
midnight. waves calm to 2 feet. 
.monday...west winds 5 to 15 knots backing southwest by mid
afternoon. waves calm to 2 feet. 
.monday night...west winds 5 to 15 knots veering northwest after
midnight. waves calm to 2 feet. 
.tuesday...southwest winds 5 to 15 knots veering northwest. waves
calm to 2 feet. 
.wednesday...west winds 5 to 15 knots veering north. waves calm
to 2 feet. 

$$

fzus63 kmqt 080202
glfls 
expires:202608080800;;801940

open lake forecast for lake superior
national weather service marquette mi
1002 pm 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 to lake superior 
tonight. on saturday, a 29.5 inch quebec low and a 30.0 inch four 
corners high drive weak and ill-defined 29.9 inch ridging/troughing 
over lake superior through monday night. weak ridging of 30.0 
inches, extending beween a 30.2 inch bermuda high and 30.0 inch 
ridging over the western canadian provinces, returns for monday and 
tuesday before decreasing to 29.9 inches on wednesday.




lsz263-080800-
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-
1002 pm edt fri aug 7 2026

.rest of tonight...west winds 5 to 15 knots veering northwest
after midnight, then backing west late. 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. 
.saturday night...southwest winds 10 to 20 knots becoming west
5 to 15 knots after midnight, then backing southwest late. 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 south by mid
afternoon. a slight chance of showers. waves calm to 2 feet. 
.sunday night...west winds 5 to 15 knots diminishing to less than
10 knots after midnight. waves calm to 2 feet. 
.monday...west winds 5 to 15 knots backing southwest by mid
afternoon. waves calm to 2 feet. 
.monday night...southwest winds 5 to 15 knots becoming west less
than 10 knots after midnight. waves calm to 2 feet. 
.tuesday...west winds 5 to 15 knots. waves calm to 2 feet. 
.wednesday...west winds 5 to 15 knots veering northwest. waves
calm to 2 feet. 

$$