fzus63 kmqt 262001
glfls 
expires:202606270800;;953752

open lake forecast for lake superior
national weather service marquette mi
400 pm edt fri jun 26 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 remains over lake superior today into sunday 
morning. meanwhile, broad 29.6 inch low pressure over the northern 
rockies this afternoon further deepens to at least 29.4 inches while 
moving into the high plains into saturday. by sunday afternoon, the 
high over lake superior retreats eastward but keeps 30.0 inch 
ridging over the upper great lakes while the low pressure remains 
over the plains. the high pressure then shifts over to lake ontario 
by monday morning as the 29.4 inch low pressure consolidates over 
south dakota. through monday and tuesday, this low slides north to 
lake winnipeg while the 30.1 inch high shifts off the east coast. 
this progressively strengthens troughing over lake superior to 29.8 
inches by monday evening, remaining that way until tuesday morning. 
a shortwave low lifting from colorado then deepens the troughing 
over lake superior to 29.7 inches by tuesday evening as it heads 
toward northern ontario. with a 30.1 inch high developing over the 
southeastern u.s. on wednesday, we could see 29.9 inch ridging 
return over lake superior late in the day.  




lsz162-270800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 pm edt fri jun 26 2026 /300 pm cdt fri jun 26 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, then veering east late. waves calm to 2 feet. 
.saturday...east winds 5 to 15 knots becoming northeast 10 to
20 knots in the afternoon. waves building to 1 to 3 feet. 
.saturday night...east winds 10 to 20 knots becoming northeast
5 to 15 knots after midnight, then increasing to 10 to 20 knots
late. waves subsiding to calm to 2 feet. 
.sunday...east winds 10 to 20 knots becoming northeast 15 to
25 knots by mid afternoon. a chance of showers. a slight chance
of thunderstorms by mid afternoon. waves building to 2 to 4 feet.
.sunday night...east winds 15 to 25 knots diminishing to 10 to
20 knots after midnight. showers likely and a chance of
thunderstorms. waves subsiding to 1 to 3 feet. 
.monday...northeast winds 10 to 20 knots increasing to 15 to
25 knots by mid afternoon. waves subsiding to calm to 2 feet,
then building to 1 to 3 feet. 
.monday night...northeast winds 15 to 25 knots diminishing to
10 to 20 knots after midnight. a chance of showers and
thunderstorms. waves building to 2 to 4 feet, then subsiding to
1 to 3 feet. 
.tuesday...southwest winds 5 to 15 knots becoming west 10 to
20 knots. a chance of showers. waves subsiding to calm to 2 feet.
.wednesday...southwest winds 10 to 20 knots diminishing to 5 to
15 knots. a chance of showers and thunderstorms. waves calm to
2 feet. 

$$

fzus63 kmqt 262001
glfls 
expires:202606270800;;953753

open lake forecast for lake superior
national weather service marquette mi
400 pm edt fri jun 26 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 remains over lake superior today into sunday 
morning. meanwhile, broad 29.6 inch low pressure over the northern 
rockies this afternoon further deepens to at least 29.4 inches while 
moving into the high plains into saturday. by sunday afternoon, the 
high over lake superior retreats eastward but keeps 30.0 inch 
ridging over the upper great lakes while the low pressure remains 
over the plains. the high pressure then shifts over to lake ontario 
by monday morning as the 29.4 inch low pressure consolidates over 
south dakota. through monday and tuesday, this low slides north to 
lake winnipeg while the 30.1 inch high shifts off the east coast. 
this progressively strengthens troughing over lake superior to 29.8 
inches by monday evening, remaining that way until tuesday morning. 
a shortwave low lifting from colorado then deepens the troughing 
over lake superior to 29.7 inches by tuesday evening as it heads 
toward northern ontario. with a 30.1 inch high developing over the 
southeastern u.s. on wednesday, we could see 29.9 inch ridging 
return over lake superior late in the day.  




lsz263-270800-
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 fri jun 26 2026

.late this afternoon...northeast winds 5 to 15 knots. waves calm
to 2 feet. 
.tonight...east winds 5 to 15 knots becoming southeast less than
10 knots late. waves calm to 2 feet. 
.saturday...east winds less than 10 knots becoming northeast 5 to
15 knots in the afternoon, then increasing to 10 to 20 knots
late. waves calm to 2 feet. 
.saturday night...east winds 10 to 20 knots diminishing to 5 to
15 knots after midnight, then veering southeast late. waves
building to 1 to 3 feet, then subsiding to calm to 2 feet. 
.sunday...east winds 5 to 15 knots increasing to 10 to 20 knots
by mid afternoon. a chance of showers by mid afternoon. waves
building to 2 to 4 feet. 
.sunday night...east winds 15 to 25 knots becoming southeast
10 to 20 knots after midnight. a chance of showers through
midnight. showers likely after midnight. waves 2 to 4 feet. 
.monday...east winds 10 to 20 knots. waves 2 to 4 feet. 
.monday night...east winds 10 to 20 knots veering south after
midnight. a chance of showers through midnight. a chance of
thunderstorms. showers likely after midnight. waves 2 to 4 feet. 
.tuesday...southwest winds 10 to 20 knots. a chance of showers.
waves subsiding to calm to 2 feet, then building to 1 to 3 feet. 
.wednesday...southwest winds 10 to 20 knots. a chance of showers.
waves subsiding to calm to 2 feet, then building to 1 to 3 feet. 

$$