fzus63 kmqt 300801
glfls 
expires:202607302000;;322737

open lake forecast for lake superior
national weather service marquette mi
401 am edt thu jul 30 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... 

weak 30.0 inch ridging remains over lake superior through this 
morning. then weak troughing of 28.8 to 29.9 inches moves over the 
lake this afternoon through early friday. ridging of 30.0 to 30.1 
inches returns this weekend into early next week.




lsz263-302000-
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-
401 am edt thu jul 30 2026

.early this morning...southwest winds 5 to 15 knots. patchy
smoke. a chance of showers and thunderstorms. waves calm to
2 feet. 
.today...southwest winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon, then veering west late. patchy smoke
through early afternoon. a chance of showers and a slight chance
of thunderstorms. waves building to 2 to 4 feet, then subsiding
to 1 to 3 feet. 
.tonight...west winds 10 to 20 knots diminishing to 5 to 15 knots
after midnight. a slight chance of showers and thunderstorms.
waves subsiding to calm to 2 feet. 
.friday...west winds 5 to 15 knots. patchy smoke through early
afternoon. a slight chance of showers and thunderstorms. waves
calm to 2 feet. 
.friday night...west winds 5 to 15 knots veering north after
midnight. waves calm to 2 feet. 
.saturday...northeast winds 5 to 15 knots. waves calm to 2 feet. 
.saturday night...north winds 5 to 15 knots becoming northeast
less than 10 knots after midnight. waves calm to 2 feet. 
.sunday...east winds 5 to 15 knots veering southeast. waves calm
to 2 feet. 
.monday...south winds 10 to 20 knots veering southwest. waves
building to 1 to 3 feet. 

$$