fzus63 kmqt 070201
glfls 
expires:202608070800;;744493

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt thu aug 6 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...

lake superior is currently situated between a 29.5 inch low along 
the shore of hudson bay at the manitoba/ontario line and a 30.2 inch 
bermuda high. friday, a cold front brings 29.8 inch troughing across 
the lake before 29.9 inch ridging returns late friday night into 
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, with a weak 29.8 inch trough 
potentially passing through sunday evening. the high pressure 
ridging could increase to 30.0 inches by tuesday. 




lsz162-070800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1001 pm edt thu aug 6 2026 /901 pm cdt thu aug 6 2026/

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

$$

fzus63 kmqt 070201
glfls 
expires:202608070800;;744494

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt thu aug 6 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...

lake superior is currently situated between a 29.5 inch low along 
the shore of hudson bay at the manitoba/ontario line and a 30.2 inch 
bermuda high. friday, a cold front brings 29.8 inch troughing across 
the lake before 29.9 inch ridging returns late friday night into 
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, with a weak 29.8 inch trough 
potentially passing through sunday evening. the high pressure 
ridging could increase to 30.0 inches by tuesday. 




lsz263-070800-
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 pm edt thu aug 6 2026

.rest of tonight...south winds 10 to 20 knots increasing to 15 to
25 knots after midnight, then becoming southwest 10 to 20 knots
late. waves 1 to 3 feet building to 2 to 4 feet. 
.friday...southwest winds 10 to 20 knots diminishing to 5 to
15 knots in the afternoon. a chance of showers and thunderstorms.
waves subsiding to calm to 2 feet. 
.friday night...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 10 to
20 knots by mid 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 slight 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...south 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. 

$$