fzus63 kmqt 201401
glfls 
expires:202606202000;;071668

open lake forecast for lake superior
national weather service marquette mi
1000 am edt sat jun 20 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... 

this morning, lake superior is sits under 29.9 inches of pressure, 
between a surface low over the gulf of st. lawrence and high 
pressure over the northern plains. lake superior remains at 29.9 
inches through sunday evening as the high weakens and moves over the 
upper great lakes. pressure increases to 30.2 inches by tuesday 
morning. this ridging begins to break down late tuesday, decreasing 
to 29.9 by thursday afternoon as a weak low tracks from wisconsin to 
the upper great lakes.




lsz162-202000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1000 am edt sat jun 20 2026 /900 am cdt sat jun 20 2026/

.rest of today...southwest winds 5 to 15 knots. a chance of rain
showers and a slight chance of thunderstorms. waves calm to
2 feet. 
.tonight...southwest winds 5 to 15 knots veering north after
midnight. waves calm to 2 feet. 
.sunday...north winds less than 10 knots becoming southeast 5 to
15 knots in the afternoon, then backing east late. waves calm to
2 feet. 
.sunday night...northeast winds 5 to 15 knots diminishing to less
than 10 knots after midnight. waves calm to 2 feet. 
.monday...northeast winds less than 10 knots becoming north 5 to
15 knots by mid afternoon. waves calm to 2 feet. 
.monday night...north winds less than 10 knots. waves calm to
2 feet. 
.tuesday...northeast winds 5 to 15 knots. a chance of rain
showers. waves calm to 2 feet. 
.wednesday...northeast winds 5 to 15 knots becoming north less
than 10 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 201401
glfls 
expires:202606202000;;071669

open lake forecast for lake superior
national weather service marquette mi
1000 am edt sat jun 20 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... 

this morning, lake superior is sits under 29.9 inches of pressure, 
between a surface low over the gulf of st. lawrence and high 
pressure over the northern plains. lake superior remains at 29.9 
inches through sunday evening as the high weakens and moves over the 
upper great lakes. pressure increases to 30.2 inches by tuesday 
morning. this ridging begins to break down late tuesday, decreasing 
to 29.9 by thursday afternoon as a weak low tracks from wisconsin to 
the upper great lakes.




lsz263-202000-
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-
1000 am edt sat jun 20 2026

.rest of today...southwest winds 5 to 15 knots diminishing to
less than 10 knots late. a slight chance of showers and
thunderstorms. waves calm to 2 feet. 
.tonight...southwest winds less than 10 knots veering west after
midnight, then veering north late. waves calm to 2 feet. 
.sunday...north winds less than 10 knots veering south in the
afternoon, then backing northeast late. waves calm to 2 feet. 
.sunday night...northeast winds 5 to 15 knots backing north after
midnight. waves calm to 2 feet. 
.monday...north winds 5 to 15 knots backing west by mid
afternoon. waves calm to 2 feet. 
.monday night...west winds 5 to 15 knots diminishing to less than
10 knots after midnight. waves calm to 2 feet. 
.tuesday...southwest winds 5 to 15 knots backing east. a chance
of rain showers. waves calm to 2 feet. 
.wednesday...east winds 5 to 15 knots backing northeast. waves
calm to 2 feet. 

$$