fzus63 kmqt 292001
glfls 
expires:202606300800;;125288

open lake forecast for lake superior
national weather service marquette mi
401 pm edt mon jun 29 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 29.4 inch low pressure over the dakotas will track north tonight 
and then deepen to 29.3 inches as it retrogrades into eastern 
saskatchewan on tuesday. this will keep troughing of 29.7 inches over 
lake superior through tuesday evening. tuesday night into wednesday 
a 29.8 inch ridge will build over the upper great lakes while a 
broad trough of 29.6 inches remains over the plains. this pattern 
will hold through friday. on friday night into saturday a 30.2 inch 
high pressure will move south from the hudson bay, extending a 30.0 
inch ridge of lake superior. 




lsz162-300800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 pm edt mon jun 29 2026 /301 pm cdt mon jun 29 2026/

.late this afternoon...northeast winds 15 to 25 knots. patchy
fog. a chance of showers and thunderstorms. waves 2 to 4 feet. 
.tonight...northeast winds 15 to 25 knots becoming east 10 to
20 knots after midnight. patchy fog. a chance of showers and
thunderstorms. waves subsiding to 1 to 3 feet. 
.tuesday...west winds 5 to 15 knots backing southwest in the
afternoon, then becoming south 10 to 20 knots late. areas of
dense fog through early afternoon. waves subsiding to calm to
2 feet. 
.tuesday night...southwest winds 10 to 20 knots. waves calm to
2 feet. 
.wednesday...southwest winds 10 to 20 knots. a chance of showers
and thunderstorms by mid afternoon. waves calm to 2 feet. 
.wednesday night...southwest winds 5 to 15 knots. a chance of
showers. waves calm to 2 feet. 
.thursday...southwest winds 5 to 15 knots. waves calm to 2 feet. 
.thursday night...southwest winds 5 to 15 knots backing northeast
after midnight. a chance of showers. waves calm to 2 feet. 
.friday...northeast winds 5 to 15 knots. a chance of showers.
waves calm to 2 feet. 
.saturday...northeast winds 5 to 15 knots. a chance of showers.
waves calm to 2 feet. 

$$

fzus63 kmqt 292001
glfls 
expires:202606300800;;125289

open lake forecast for lake superior
national weather service marquette mi
401 pm edt mon jun 29 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 29.4 inch low pressure over the dakotas will track north tonight 
and then deepen to 29.3 inches as it retrogrades into eastern 
saskatchewan on tuesday. this will keep troughing of 29.7 inches over 
lake superior through tuesday evening. tuesday night into wednesday 
a 29.8 inch ridge will build over the upper great lakes while a 
broad trough of 29.6 inches remains over the plains. this pattern 
will hold through friday. on friday night into saturday a 30.2 inch 
high pressure will move south from the hudson bay, extending a 30.0 
inch ridge of lake superior. 




lsz263-300800-
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 pm edt mon jun 29 2026

...dense fog advisory in effect until 8 am edt tuesday...

.late this afternoon...northeast winds 10 to 20 knots. patchy
fog. a slight chance of showers and thunderstorms. waves 2 to
4 feet. 
.tonight...east winds 15 to 25 knots veering southeast after
midnight, then becoming south 10 to 20 knots late. patchy fog. a
chance of showers and thunderstorms. waves 2 to 4 feet. 
.tuesday...southwest winds 10 to 20 knots backing south late.
areas of dense fog. a slight chance of showers and thunderstorms
by mid afternoon. waves subsiding to 1 to 3 feet. 
.tuesday night...southwest winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. a slight chance of showers and
thunderstorms through midnight. some thunderstorms may be severe.
waves subsiding to calm to 2 feet. 
.wednesday...southwest winds 10 to 20 knots. a chance of showers
and thunderstorms by mid afternoon. waves building to 2 to
4 feet, then subsiding to 1 to 3 feet. 
.wednesday night...southwest winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. showers likely through midnight. a
chance of thunderstorms. waves subsiding to calm to 2 feet. 
.thursday...southwest winds 5 to 15 knots increasing to 10 to
20 knots by mid afternoon. waves building to 1 to 3 feet, then
subsiding to calm to 2 feet. 
.thursday night...southwest winds 5 to 15 knots. waves calm to
2 feet. 
.friday...northeast winds 5 to 15 knots backing west. a chance of
showers. waves calm to 2 feet. 
.saturday...northeast winds 5 to 15 knots veering east. a chance
of showers. waves calm to 2 feet. 

$$