fzus63 kmqt 230801
glfls 
expires:202606232000;;760681

open lake forecast for lake superior
national weather service marquette mi
400 am edt tue jun 23 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 30.2 inch high over lake superior this morning remains until this 
evening. tonight through wednesday, expect a 29.9 inch clipper low 
to dig through the northern plains and upper midwest, before moving 
through lower michigan towards the st. lawrence seaway on 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 as a 
29.5 inch low begins to lift off of the northern rockies. 




lsz162-232000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 am edt tue jun 23 2026 /300 am cdt tue jun 23 2026/

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

$$

fzus63 kmqt 230801
glfls 
expires:202606232000;;760682

open lake forecast for lake superior
national weather service marquette mi
400 am edt tue jun 23 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 30.2 inch high over lake superior this morning remains until this 
evening. tonight through wednesday, expect a 29.9 inch clipper low 
to dig through the northern plains and upper midwest, before moving 
through lower michigan towards the st. lawrence seaway on 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 as a 
29.5 inch low begins to lift off of the northern rockies. 




lsz263-232000-
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 tue jun 23 2026

.early this morning...west winds less than 10 knots. waves calm
to 2 feet. 
.today...south winds less than 10 knots increasing to 5 to
15 knots in the afternoon, then backing northeast late. waves
calm to 2 feet. 
.tonight...east winds 5 to 15 knots. a chance of rain showers and
a slight chance of thunderstorms. waves calm to 2 feet. 
.wednesday...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. 
.wednesday night...northeast winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. a slight chance of rain showers.
waves calm to 2 feet. 
.thursday...north winds less than 10 knots. waves calm to 2 feet.
.thursday night...west winds less than 10 knots. waves calm to
2 feet. 
.friday...northeast winds 5 to 15 knots veering east. waves calm
to 2 feet. 
.saturday...east winds 10 to 20 knots. a chance of rain showers.
waves building to 1 to 3 feet. 

$$