fzus63 kmqt 061401
glfls 
expires:202608062000;;715991

open lake forecast for lake superior
national weather service marquette mi
1001 am 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...

a 30.1 inch high over the upper great lakes today keeps 30.0 inch 
ridging over lake superior until tonight as the weak high travels 
east towards the st. lawrence river. by friday, a cold front brings 
29.8 inch troughing across the lake before 29.9 inch ridging returns 
with a high digging towards chicago 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. the high pressure ridging could increase to 
30.0 inches by tuesday. 




lsz162-062000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1001 am edt thu aug 6 2026 /901 am cdt thu aug 6 2026/

.rest of today...southwest winds 15 to 25 knots backing south
late. waves 1 to 3 feet building to 2 to 4 feet, then subsiding
to 1 to 3 feet. 
.tonight...south winds 15 to 25 knots veering southwest after
midnight, then diminishing to 10 to 20 knots late. a slight
chance of showers and thunderstorms after midnight. waves 1 to
3 feet. 
.friday...southwest winds 10 to 20 knots veering west late. a
chance of showers and a slight chance of thunderstorms. waves
subsiding to calm to 2 feet. 
.friday night...west winds 10 to 20 knots. waves calm to 2 feet. 
.saturday...west winds 10 to 20 knots backing southwest by mid
afternoon. waves building to 1 to 3 feet, then subsiding to calm
to 2 feet. 
.saturday night...west winds 5 to 15 knots veering northwest
after midnight. waves calm to 2 feet. 
.sunday...southwest winds 5 to 15 knots veering north. waves calm
to 2 feet. 
.monday...north winds 5 to 15 knots backing northwest. waves calm
to 2 feet. 

$$

fzus63 kmqt 061401
glfls 
expires:202608062000;;715992

open lake forecast for lake superior
national weather service marquette mi
1001 am 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...

a 30.1 inch high over the upper great lakes today keeps 30.0 inch 
ridging over lake superior until tonight as the weak high travels 
east towards the st. lawrence river. by friday, a cold front brings 
29.8 inch troughing across the lake before 29.9 inch ridging returns 
with a high digging towards chicago 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. the high pressure ridging could increase to 
30.0 inches by tuesday. 




lsz263-062000-
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 thu aug 6 2026

.rest of today...southwest winds 15 to 25 knots increasing to
20 to 30 knots in the afternoon, then becoming south 15 to
25 knots late. waves 2 to 4 feet building to 3 to 5 feet
occasionally to 7 feet, then subsiding to 2 to 4 feet. 
.tonight...south winds 15 to 25 knots veering southwest late.
waves subsiding to 1 to 3 feet, then building to 2 to 4 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. a slight chance of
showers through midnight. 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. waves subsiding to
calm to 2 feet. 
.sunday...west winds 10 to 20 knots diminishing to 5 to 15 knots.
waves calm to 2 feet. 
.monday...southwest winds 5 to 15 knots veering west. waves calm
to 2 feet. 

$$