fzus63 kmqt 270201
glfls 
expires:202607270800;;666306

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt sun jul 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... 

troughing around 29.8 inches over lake superior deepens to 29.7 
inches by tonight. a 29.6 to 29.7 inch clipper low then moves into 
the upper great lakes or upper midwest by monday before departing 
east towards the mid-atlantic on tuesday. behind the clipper, weak 
ridging of 29.9 to 30.0 inches returns to lake superior tuesday into 
thursday.




lsz162-270800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1001 pm edt sun jul 26 2026 /901 pm cdt sun jul 26 2026/

.rest of tonight...southwest winds 5 to 15 knots veering west
after midnight, then veering northeast late. patchy fog and
smoke. a chance of showers and a slight chance of thunderstorms.
some thunderstorms may be severe. waves calm to 2 feet. 
.monday...northeast winds 10 to 20 knots diminishing to 5 to
15 knots in the afternoon. a chance of showers and a slight
chance of thunderstorms through early afternoon. patchy fog. some
thunderstorms may be severe. waves calm to 2 feet. 
.monday night...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 by mid afternoon. waves calm to 2 feet. 
.tuesday night...northeast winds 5 to 15 knots becoming north
less than 10 knots after midnight. waves calm to 2 feet. 
.wednesday...east winds less than 10 knots increasing to 5 to
15 knots by mid afternoon. waves calm to 2 feet. 
.wednesday night...northeast winds 5 to 15 knots diminishing to
less than 10 knots after midnight. waves calm to 2 feet. 
.thursday...southwest winds 5 to 15 knots veering north. a chance
of showers. waves calm to 2 feet. 
.friday...west winds 5 to 15 knots veering north. waves calm to
2 feet. 

$$

fzus63 kmqt 270201
glfls 
expires:202607270800;;666307

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt sun jul 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... 

troughing around 29.8 inches over lake superior deepens to 29.7 
inches by tonight. a 29.6 to 29.7 inch clipper low then moves into 
the upper great lakes or upper midwest by monday before departing 
east towards the mid-atlantic on tuesday. behind the clipper, weak 
ridging of 29.9 to 30.0 inches returns to lake superior tuesday into 
thursday.




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-
1001 pm edt sun jul 26 2026

.rest of tonight...west winds 5 to 15 knots veering northeast
after midnight. patchy fog. patchy smoke after midnight. a slight
chance of showers and thunderstorms. some thunderstorms may be
severe. waves calm to 2 feet. 
.monday...northeast winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon. a slight chance of showers through
early afternoon. patchy fog. waves calm to 2 feet. 
.monday night...north winds 5 to 15 knots backing northwest after
midnight, then becoming north less than 10 knots late. waves calm
to 2 feet. 
.tuesday...northeast winds less than 10 knots becoming east 5 to
15 knots by mid afternoon. waves calm to 2 feet. 
.tuesday night...east winds less than 10 knots veering southeast
after midnight. waves calm to 2 feet. 
.wednesday...south winds 5 to 15 knots backing east by mid
afternoon. waves calm to 2 feet. 
.wednesday night...southeast winds 5 to 15 knots veering south
after midnight. waves calm to 2 feet. 
.thursday...southwest winds 5 to 15 knots veering north. a chance
of showers. waves calm to 2 feet. 
.friday...northwest winds 5 to 15 knots backing west. waves calm
to 2 feet. 

$$