fzus63 kmqt 210801
glfls 
expires:202606212000;;115539

open lake forecast for lake superior
national weather service marquette mi
400 am edt sun jun 21 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, the upper great lakes are under broad weak 29.9 inch 
ridging associated with 30.1 inch high pressure over northwest 
canada. as a 29.8 inch low passes south of the great lakes through 
monday morning, high pressure builds to 30.2 inches over northern 
manitoba. the high then moves over hudson bay, northern ontario, and 
lake superior for tuesday, maintaining 30.2 inches. tuesday 
afternoon, a weak 30.0 inch low forms over the dakotas, deepening 
toi 29.9 inches over wisconsin wednesday as the high retreats to 
hudson bay. the low continues slowly pushing east through the great 
lakes thursday before broad 30.0 inch high pressure fills in over 
the upper great lakes for friday.




lsz162-212000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 am edt sun jun 21 2026 /300 am cdt sun jun 21 2026/

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

$$

fzus63 kmqt 210801
glfls 
expires:202606212000;;115540

open lake forecast for lake superior
national weather service marquette mi
400 am edt sun jun 21 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, the upper great lakes are under broad weak 29.9 inch 
ridging associated with 30.1 inch high pressure over northwest 
canada. as a 29.8 inch low passes south of the great lakes through 
monday morning, high pressure builds to 30.2 inches over northern 
manitoba. the high then moves over hudson bay, northern ontario, and 
lake superior for tuesday, maintaining 30.2 inches. tuesday 
afternoon, a weak 30.0 inch low forms over the dakotas, deepening 
toi 29.9 inches over wisconsin wednesday as the high retreats to 
hudson bay. the low continues slowly pushing east through the great 
lakes thursday before broad 30.0 inch high pressure fills in over 
the upper great lakes for friday.




lsz263-212000-
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-
400 am edt sun jun 21 2026

.early this morning...north winds less than 10 knots. waves calm
to 2 feet. 
.today...north winds less than 10 knots veering northeast in the
afternoon. waves calm to 2 feet. 
.tonight...northeast winds less than 10 knots becoming north 5 to
15 knots late. waves calm to 2 feet. 
.monday...north winds 5 to 15 knots backing west in the
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 less than 10 knots becoming northeast
5 to 15 knots by mid afternoon. waves calm to 2 feet. 
.tuesday night...east winds 5 to 15 knots. a chance of rain
showers through midnight. rain showers likely after midnight.
waves calm to 2 feet. 
.wednesday...northeast winds 5 to 15 knots. a chance of rain
showers. waves calm to 2 feet. 
.thursday...north winds less than 10 knots backing west. waves
calm to 2 feet. 

$$