fzus63 kmqt 280201
glfls 
expires:202608280800;;475070

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt thu aug 27 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 over northern manitoba stretches towards 
lake superior through tonight, eventually becoming centered over 
lake superior at 30.2 inches by friday morning before continuing 
into new england on saturday. saturday night, a low pressure over 
the central to northern plains deepens to 29.6 inches. this low 
approaches the great lakes over the course of early next week, with 
heights over lake superior falling to 29.8 inches by monday 
afternoon.




lsz162-280800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1001 pm edt thu aug 27 2026 /901 pm cdt thu aug 27 2026/

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

$$

fzus63 kmqt 280201
glfls 
expires:202608280800;;475071

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt thu aug 27 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 over northern manitoba stretches towards 
lake superior through tonight, eventually becoming centered over 
lake superior at 30.2 inches by friday morning before continuing 
into new england on saturday. saturday night, a low pressure over 
the central to northern plains deepens to 29.6 inches. this low 
approaches the great lakes over the course of early next week, with 
heights over lake superior falling to 29.8 inches by monday 
afternoon.




lsz263-280800-
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 27 2026

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

$$