fzus63 kmqt 030203
glfls 
expires:202507030800;;781704

open lake forecast for lake superior
national weather service marquette mi
1002 pm edt wed jul 2 2025

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 weak ridge of 30.0 inches builds in across the upper great lakes 
tonight and remains across the area through thursday evening. by 
friday morning, the ridging will build to 30.1 inches as it shifts 
over southern ontario and the lower great lakes while a 29.3 inch 
low over northern saskatchewan drapes a trough of 29.6 inches over 
the northern great plains. by saturday, the ridge will shift over 
the east coast and as the low moves over hudson bay, troughing of 
29.8 inches approaches the western extent of lake superior. the 
trough then proceeds over the lake through sunday morning, with 30.1 
inch high pressure building over the plains. this high moves over 
the great lakes basin for the early portions of next week.



lsz162-030800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1002 pm edt wed jul 2 2025 /902 pm cdt wed jul 2 2025/

.rest of tonight...north winds 5 to 15 knots veering northeast
after midnight. haze. waves calm to 2 feet. 
.thursday...northeast winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon. haze through early afternoon. waves
calm to 2 feet. 
.thursday night...northeast winds 5 to 15 knots. waves calm to
2 feet. 
.friday...east winds 5 to 15 knots increasing to 10 to 20 knots
by mid afternoon. a slight chance of showers and thunderstorms.
waves calm to 2 feet. 
.friday night...southwest winds 10 to 20 knots. a chance of
showers through midnight. a chance of thunderstorms. showers
likely after midnight. waves calm to 2 feet. 
.saturday...southwest winds 10 to 20 knots. showers and a chance
of thunderstorms. waves calm to 2 feet. 
.saturday night...north winds 10 to 20 knots. showers likely
through midnight. a chance of thunderstorms. a chance of showers
after midnight. waves calm to 2 feet. 
.sunday...east winds 10 to 20 knots becoming northeast 5 to
15 knots. waves calm to 2 feet. 
.monday...east winds 5 to 15 knots backing northeast. waves calm
to 2 feet. 

$$