fzus63 kmqt 220811
glfls 
expires:202606222000;;172740

open lake forecast for lake superior
national weather service marquette mi
411 am edt mon jun 22 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 between a 30.2 inch high over 
northern manitoba and a 29.8 inch low over indiana. throughout 
today, the low will weaken to 29.9 inches and push to the east coast 
while the high shifts into hudson bay. the high expands over the 
upper great lakes tuesday. late tuesday into wednesday, a weak 30.0 
inch low will pass just south of lake superior from the dakotas. the 
low will slowly push into the lower great lakes thursday while 
ridging fills in behind associated with the high over hudson bay, 
now at 30.1 inches. weak high pressure remains over lake superior 
into the weekend while low pressure deepens over the central plains.




lsz162-222000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
411 am edt mon jun 22 2026 /311 am cdt mon jun 22 2026/

.early this morning...northeast winds 5 to 15 knots. waves calm
to 2 feet. 
.today...northeast winds 5 to 15 knots veering south in the
afternoon, then veering southwest late. waves calm to 2 feet. 
.tonight...west winds 5 to 15 knots backing southwest late. waves
calm to 2 feet. 
.tuesday...north winds less than 10 knots becoming northeast 5 to
15 knots in the afternoon. a chance of showers and a slight
chance of thunderstorms by mid afternoon. waves calm to 2 feet. 
.tuesday night...northeast winds 5 to 15 knots increasing to
10 to 20 knots after midnight. a chance of rain showers through
midnight. a chance of thunderstorms. rain showers after midnight.
waves calm to 2 feet. 
.wednesday...northeast winds 10 to 20 knots. a chance of rain
showers. waves building to 1 to 3 feet. 
.wednesday night...northeast winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. waves subsiding to calm to 2 feet. 
.thursday...north winds 5 to 15 knots diminishing to less than
10 knots. waves calm to 2 feet. 
.friday...north winds less than 10 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 220811
glfls 
expires:202606222000;;172741

open lake forecast for lake superior
national weather service marquette mi
411 am edt mon jun 22 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 between a 30.2 inch high over 
northern manitoba and a 29.8 inch low over indiana. throughout 
today, the low will weaken to 29.9 inches and push to the east coast 
while the high shifts into hudson bay. the high expands over the 
upper great lakes tuesday. late tuesday into wednesday, a weak 30.0 
inch low will pass just south of lake superior from the dakotas. the 
low will slowly push into the lower great lakes thursday while 
ridging fills in behind associated with the high over hudson bay, 
now at 30.1 inches. weak high pressure remains over lake superior 
into the weekend while low pressure deepens over the central plains.




lsz263-222000-
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-
411 am edt mon jun 22 2026

.early this morning...north winds less than 10 knots. waves calm
to 2 feet. 
.today...north winds 5 to 15 knots backing west in the afternoon.
waves calm to 2 feet. 
.tonight...west winds 5 to 15 knots diminishing to less than
10 knots after midnight. waves calm to 2 feet. 
.tuesday...southwest winds less than 10 knots becoming northeast
5 to 15 knots in the afternoon, then veering east late. waves
calm to 2 feet. 
.tuesday night...east winds 5 to 15 knots. a chance of rain
showers through midnight. a slight chance of thunderstorms. rain
showers likely after midnight. waves calm to 2 feet. 
.wednesday...east winds 10 to 20 knots backing northeast by mid
afternoon. rain showers likely through early afternoon. waves
building to 1 to 3 feet, then subsiding to calm to 2 feet. 
.wednesday night...northeast winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. waves calm to 2 feet. 
.thursday...north winds 5 to 15 knots backing west. waves calm to
2 feet. 
.friday...southwest winds less than 10 knots backing east. waves
calm to 2 feet. 

$$