fzus63 kmqt 240801
glfls 
expires:202606242000;;815288

open lake forecast for lake superior
national weather service marquette mi
400 am edt wed jun 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 29.9 inch clipper low over northwest minnesota this morning digs 
along the wisconsin/u.p. border by this afternoon before moving 
through lower michigan towards the st. lawrence seaway tonight into 
thursday. as the clipper leaves the upper midwest, expect weak 30.0 
inch ridging to return to lake superior on thursday, building to 
30.1 inches by friday morning and remaining that way into saturday 
to potentially even sunday. meanwhile late this weekend, a 29.2 inch 
low lifts from the rockies towards the northern plains and canadian 
prairies. 




lsz162-242000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 am edt wed jun 24 2026 /300 am cdt wed jun 24 2026/

.early this morning...northeast winds 5 to 15 knots. a chance of
showers and thunderstorms. waves calm to 2 feet. 
.today...northeast winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon. a chance of showers and a slight
chance of thunderstorms. waves building to 1 to 3 feet. 
.tonight...northeast winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. a slight chance of rain showers through
midnight. patchy fog after midnight. waves subsiding to calm to
2 feet. 
.thursday...northeast winds 5 to 15 knots veering southwest in
the afternoon, then veering north late. patchy fog through early
afternoon. waves calm to 2 feet. 
.thursday night...north winds less than 10 knots. waves calm to
2 feet. 
.friday...north winds less than 10 knots becoming northeast 5 to
15 knots by mid afternoon. waves calm to 2 feet. 
.friday night...northeast winds 5 to 15 knots diminishing to less
than 10 knots after midnight. waves calm to 2 feet. 
.saturday...northeast winds 10 to 20 knots veering east. a chance
of rain showers. waves building to 1 to 3 feet. 
.sunday...east winds 20 to 30 knots. a chance of showers. a
chance of thunderstorms. showers likely. waves building to 3 to
6 feet occasionally to 8 feet, then subsiding to 2 to 4 feet. 

$$

fzus63 kmqt 240801
glfls 
expires:202606242000;;815289

open lake forecast for lake superior
national weather service marquette mi
400 am edt wed jun 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 29.9 inch clipper low over northwest minnesota this morning digs 
along the wisconsin/u.p. border by this afternoon before moving 
through lower michigan towards the st. lawrence seaway tonight into 
thursday. as the clipper leaves the upper midwest, expect weak 30.0 
inch ridging to return to lake superior on thursday, building to 
30.1 inches by friday morning and remaining that way into saturday 
to potentially even sunday. meanwhile late this weekend, a 29.2 inch 
low lifts from the rockies towards the northern plains and canadian 
prairies. 




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-
400 am edt wed jun 24 2026

.early this morning...east winds 5 to 15 knots. a chance of rain
showers and a slight chance of thunderstorms. waves calm to
2 feet. 
.today...east winds 5 to 15 knots becoming northeast 10 to
20 knots in the afternoon. a chance of showers and a slight
chance of thunderstorms. waves calm to 2 feet. 
.tonight...northeast winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. patchy fog. waves building to 1 to
3 feet, then subsiding to calm to 2 feet. 
.thursday...north winds 5 to 15 knots becoming northwest less
than 10 knots in the afternoon. patchy fog through early
afternoon. waves calm to 2 feet. 
.thursday night...west winds less than 10 knots. waves calm to
2 feet. 
.friday...northeast winds less than 10 knots increasing to 5 to
15 knots by mid afternoon. waves calm to 2 feet. 
.friday night...east winds 5 to 15 knots diminishing to less than
10 knots after midnight. waves calm to 2 feet. 
.saturday...east winds 10 to 20 knots. waves building to 1 to
3 feet, then subsiding to calm to 2 feet. 
.sunday...east winds 15 to 25 knots veering southeast. a chance
of showers, then showers likely. waves building to 3 to 6 feet
occasionally to 8 feet. 

$$