fzus63 kmqt 250801
glfls 
expires:202607252000;;566313

open lake forecast for lake superior
national weather service marquette mi
400 am edt sat jul 25 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 persists over lake superior through 
sunday morning, deepening to 29.8 inches by sunday night. a 29.6 to 
29.7 inch clipper low moves into the upper great lakes or upper 
midwest by monday before departing east towards the st. lawrence 
seaway on tuesday. behind the clipper, weak ridging of 29.9 to 30.0 
inches returns to lake superior tuesday into wednesday.




lsz162-252000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 am edt sat jul 25 2026 /300 am cdt sat jul 25 2026/

.early this morning...southwest winds 15 to 25 knots. a chance of
showers and thunderstorms. waves 3 to 5 feet occasionally to
7 feet subsiding to 2 to 4 feet. 
.today...southwest winds 10 to 20 knots diminishing to 5 to
15 knots late. waves subsiding to calm to 2 feet. 
.tonight...south winds 5 to 15 knots becoming north less than
10 knots after midnight. a slight chance of showers and
thunderstorms after midnight. waves calm to 2 feet. 
.sunday...east winds 5 to 15 knots backing northeast late. a
slight chance of showers through early afternoon. waves calm to
2 feet. 
.sunday night...east winds 5 to 15 knots backing northeast after
midnight. a chance of showers and a slight chance of
thunderstorms. waves calm to 2 feet. 
.monday...northeast winds 5 to 15 knots. a chance of showers
through early afternoon. waves calm to 2 feet. 
.monday night...northeast winds 5 to 15 knots becoming north less
than 10 knots after midnight. waves calm to 2 feet. 
.tuesday...east winds 5 to 15 knots backing northeast. waves calm
to 2 feet. 
.wednesday...northeast winds 5 to 15 knots. waves calm to 2 feet.

$$

fzus63 kmqt 250801
glfls 
expires:202607252000;;566314

open lake forecast for lake superior
national weather service marquette mi
400 am edt sat jul 25 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 persists over lake superior through 
sunday morning, deepening to 29.8 inches by sunday night. a 29.6 to 
29.7 inch clipper low moves into the upper great lakes or upper 
midwest by monday before departing east towards the st. lawrence 
seaway on tuesday. behind the clipper, weak ridging of 29.9 to 30.0 
inches returns to lake superior tuesday into wednesday.




lsz263-252000-
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 sat jul 25 2026

.early this morning...southwest winds 15 to 25 knots. a chance of
showers and thunderstorms. waves 3 to 6 feet occasionally to
8 feet. 
.today...southwest winds 15 to 25 knots diminishing to 5 to
15 knots. a chance of showers through early afternoon. waves
subsiding to calm to 2 feet. 
.tonight...southwest winds 5 to 15 knots diminishing to less than
10 knots after midnight, then backing south late. a slight chance
of showers and thunderstorms after midnight. waves calm to
2 feet. 
.sunday...south winds less than 10 knots becoming east 5 to
15 knots in the afternoon, then backing northeast late. a chance
of showers through early afternoon. waves calm to 2 feet. 
.sunday night...northeast winds 5 to 15 knots. a chance of
showers and a slight chance of thunderstorms. waves calm to
2 feet. 
.monday...northeast winds 5 to 15 knots. a chance of showers and
thunderstorms. waves calm to 2 feet. 
.monday night...northeast winds 5 to 15 knots diminishing to less
than 10 knots after midnight. waves calm to 2 feet. 
.tuesday...northeast winds less than 10 knots. waves calm to
2 feet. 
.wednesday...east winds 5 to 15 knots veering southeast. waves
calm to 2 feet. 

$$