fzus63 kmqt 241401
glfls 
expires:202608242000;;281981

open lake forecast for lake superior
national weather service marquette mi
1001 am edt mon aug 24 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 pressure moves through the western great lakes 
today before moving to the lower peninsula of michigan by tuesday 
morning. meanwhile, 29.7 inch clipper low pressure over saskatchewan 
this morning moves over lake winnipeg on tuesday as it weakens to 
29.8 inches. this clipper moves over lake superior by wednesday 
morning before lifting away towards james bay and northern quebec 
wednesday night into thursday morning. 30.1 inch high pressure 
ridging returns to lake superior by friday afternoon, building to 
30.2 inches over the lower great lakes for saturday. 




lsz162-242000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1001 am edt mon aug 24 2026 /901 am cdt mon aug 24 2026/

.rest of today...north winds less than 10 knots becoming south
5 to 15 knots in the afternoon. waves calm to 2 feet. 
.tonight...east winds 5 to 15 knots becoming northeast less than
10 knots after midnight, then veering east late. patchy fog after
midnight. a slight chance of showers after midnight. waves calm
to 2 feet. 
.tuesday...east winds 5 to 15 knots veering south in the
afternoon, then backing east late. a chance of showers and
thunderstorms. waves calm to 2 feet. 
.tuesday night...north winds 5 to 15 knots backing west after
midnight. a chance of thunderstorms through midnight. a chance of
showers. waves calm to 2 feet. 
.wednesday...west winds 10 to 20 knots increasing to 15 to
25 knots by mid afternoon. a chance of showers. waves calm to
2 feet. 
.wednesday night...northwest winds 10 to 20 knots. waves calm to
2 feet. 
.thursday...west winds 5 to 15 knots veering north. waves calm to
2 feet. 
.friday...east winds 5 to 15 knots backing northeast. waves calm
to 2 feet. 

$$

fzus63 kmqt 241401
glfls 
expires:202608242000;;281982

open lake forecast for lake superior
national weather service marquette mi
1001 am edt mon aug 24 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 pressure moves through the western great lakes 
today before moving to the lower peninsula of michigan by tuesday 
morning. meanwhile, 29.7 inch clipper low pressure over saskatchewan 
this morning moves over lake winnipeg on tuesday as it weakens to 
29.8 inches. this clipper moves over lake superior by wednesday 
morning before lifting away towards james bay and northern quebec 
wednesday night into thursday morning. 30.1 inch high pressure 
ridging returns to lake superior by friday afternoon, building to 
30.2 inches over the lower great lakes for saturday. 




lsz263-242000-
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 mon aug 24 2026

.rest of today...north winds 5 to 15 knots backing southwest
late. waves calm to 2 feet. 
.tonight...southwest winds 5 to 15 knots backing south after
midnight. waves calm to 2 feet. 
.tuesday...south winds 5 to 15 knots backing southeast late. a
chance of showers. a chance of thunderstorms by mid afternoon.
waves calm to 2 feet. 
.tuesday night...south winds 10 to 20 knots veering southwest
after midnight. showers through midnight. a chance of
thunderstorms. a chance of showers after midnight. waves calm to
2 feet. 
.wednesday...west winds 15 to 25 knots. a chance of showers.
waves building to 1 to 3 feet. 
.wednesday night...northwest winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. waves subsiding to calm to 2 feet. 
.thursday...northwest winds 5 to 15 knots veering north. waves
calm to 2 feet. 
.friday...north winds 5 to 15 knots veering south. waves calm to
2 feet. 

$$