fzus63 kmqt 232001
glfls 
expires:202606240800;;788094

open lake forecast for lake superior
national weather service marquette mi
400 pm 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 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. 




lsz162-240800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 pm edt tue jun 23 2026 /300 pm cdt tue jun 23 2026/

.late this afternoon...northeast winds 5 to 15 knots. waves calm
to 2 feet. 
.tonight...east winds 5 to 15 knots backing northeast after
midnight. a chance of rain showers and a slight chance of
thunderstorms. waves calm to 2 feet. 
.wednesday...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. 
.wednesday night...northeast winds 5 to 15 knots. a slight chance
of rain showers through midnight. waves subsiding to calm to
2 feet. 
.thursday...northeast winds 5 to 15 knots becoming north less
than 10 knots by mid afternoon. waves calm to 2 feet. 
.thursday night...north winds less than 10 knots. waves calm to
2 feet. 
.friday...north winds 5 to 15 knots veering northeast by mid
afternoon. waves calm to 2 feet. 
.friday night...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. 
.sunday...east winds 20 to 30 knots. a chance of showers. showers
likely. waves building to 3 to 6 feet occasionally to 8 feet,
then subsiding to 2 to 4 feet. 

$$

fzus63 kmqt 232001
glfls 
expires:202606240800;;788095

open lake forecast for lake superior
national weather service marquette mi
400 pm 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 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. 




lsz263-240800-
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 pm edt tue jun 23 2026

.late this afternoon...northeast winds 5 to 15 knots. waves calm
to 2 feet. 
.tonight...east winds 5 to 15 knots. a chance of rain showers. a
slight chance of thunderstorms after midnight. waves calm to
2 feet. 
.wednesday...east winds 5 to 15 knots backing northeast late. 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
through midnight. waves subsiding to calm to 2 feet. 
.thursday...north winds less than 10 knots. waves calm to 2 feet.
.thursday night...west winds less than 10 knots backing southwest
after midnight. 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. waves calm to 2 feet. 
.saturday...east winds 10 to 20 knots. a chance of rain showers.
waves building to 1 to 3 feet. 
.sunday...east winds 15 to 25 knots veering southeast. a chance
of showers. showers likely. waves building to 3 to 6 feet
occasionally to 8 feet. 

$$