fzus63 kmqt 280801
glfls 
expires:202608282000;;489611

open lake forecast for lake superior
national weather service marquette mi
400 am edt fri aug 28 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 lake superior this morning increases 
to 30.2 inches later today over the upper great lakes 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 lifts north into the canadian prairies early next week, 
with heights over lake superior subsequently falling to 29.8 inches 
by monday afternoon. weak high pressure ridging of at least 29.8 
inches returns to lake superior by tuesday.




lsz162-282000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 am edt fri aug 28 2026 /300 am cdt fri aug 28 2026/

.early this morning...northeast winds 5 to 15 knots. patchy fog.
waves calm to 2 feet. 
.today...northeast winds less than 10 knots becoming east 5 to
15 knots in the afternoon, then veering southeast late. waves
calm to 2 feet. 
.tonight...southeast winds 5 to 15 knots becoming northeast less
than 10 knots 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. a slight chance of
showers through midnight. waves calm to 2 feet. 
.sunday...northeast winds 10 to 20 knots increasing to 15 to
25 knots by mid afternoon. waves building to 1 to 3 feet. 
.sunday night...northeast winds 15 to 25 knots diminishing to
10 to 20 knots after midnight. a chance of showers. waves 1 to
3 feet. 
.monday...northeast winds 10 to 20 knots becoming west 5 to
15 knots. waves subsiding to calm to 2 feet. 
.tuesday...southwest winds 15 to 25 knots becoming west 5 to
15 knots. waves building to 1 to 3 feet, then subsiding to calm
to 2 feet. 

$$

fzus63 kmqt 280801
glfls 
expires:202608282000;;489612

open lake forecast for lake superior
national weather service marquette mi
400 am edt fri aug 28 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 lake superior this morning increases 
to 30.2 inches later today over the upper great lakes 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 lifts north into the canadian prairies early next week, 
with heights over lake superior subsequently falling to 29.8 inches 
by monday afternoon. weak high pressure ridging of at least 29.8 
inches returns to lake superior by tuesday.




lsz263-282000-
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-
400 am edt fri aug 28 2026

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

$$