fzus63 kmqt 222001
glfls 
expires:202606230800;;732505

open lake forecast for lake superior
national weather service marquette mi
400 pm edt mon jun 22 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... 

this afternoon, lake superior is between a 30.2 inch sprawling high 
over northern manitoba and a 29.8 inch low over indiana. throughout 
today, the low will weaken to 29.9 inches and push to the east coast 
while the high shifts into hudson bay. the high expands over the 
upper great lakes tuesday. late tuesday into wednesday, a weak 30.0 
inch low will pass just south of lake superior from the dakotas. the 
low will slowly push into the lower great lakes thursday while 
ridging fills in behind associated with the high over hudson bay, 
now at 30.1 inches. weak high pressure remains over lake superior 
through saturday while low pressure deepens and approaches from over 
the central plains.




lsz162-230800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 pm edt mon jun 22 2026 /300 pm cdt mon jun 22 2026/

.late this afternoon...west winds 5 to 15 knots. waves calm to
2 feet. 
.tonight...north winds 5 to 15 knots diminishing to less than
10 knots after midnight. waves calm to 2 feet. 
.tuesday...north winds less than 10 knots becoming east 5 to
15 knots in the afternoon. waves calm to 2 feet. 
.tuesday night...east winds 5 to 15 knots becoming northeast
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. showers likely
through early afternoon, then a slight chance of showers and
thunderstorms by mid afternoon. waves building to 2 to 4 feet,
then subsiding to 1 to 3 feet. 
.wednesday night...northeast winds 10 to 20 knots becoming north
5 to 15 knots after midnight. waves subsiding to calm to 2 feet. 
.thursday...north winds 5 to 15 knots. 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. 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 222001
glfls 
expires:202606230800;;732506

open lake forecast for lake superior
national weather service marquette mi
400 pm edt mon jun 22 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... 

this afternoon, lake superior is between a 30.2 inch sprawling high 
over northern manitoba and a 29.8 inch low over indiana. throughout 
today, the low will weaken to 29.9 inches and push to the east coast 
while the high shifts into hudson bay. the high expands over the 
upper great lakes tuesday. late tuesday into wednesday, a weak 30.0 
inch low will pass just south of lake superior from the dakotas. the 
low will slowly push into the lower great lakes thursday while 
ridging fills in behind associated with the high over hudson bay, 
now at 30.1 inches. weak high pressure remains over lake superior 
through saturday while low pressure deepens and approaches from over 
the central plains.




lsz263-230800-
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 mon jun 22 2026

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

$$