fzus63 kmqt 170801
glfls 
expires:202606172000;;886211

open lake forecast for lake superior
national weather service marquette mi
400 am edt wed jun 17 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... 

29.34 inch low pressure currently over the dakotas moves into 
southern wi by the early evening, sending troughing of at least 
29.5 inches over the lake. the low then pushes into southern quebec 
by thursday morning while deepening to 29.2 inches. this low slowly 
fills on friday while a 30.0 inch high builds over the upper 
mississippi valley, persisting into saturday.




lsz162-172000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 am edt wed jun 17 2026 /300 am cdt wed jun 17 2026/

.early this morning...southeast winds less than 10 knots. patchy
fog. a slight chance of rain showers. waves calm to 2 feet. 
.today...east winds 5 to 15 knots increasing to 15 to 25 knots in
the afternoon, then backing northeast late. a chance of rain
showers. waves building to 2 to 4 feet. 
.tonight...northeast winds 15 to 25 knots diminishing to 5 to
15 knots after midnight, then backing west late. a slight chance
of rain showers. waves subsiding to calm to 2 feet. 
.thursday...west winds 10 to 20 knots. a slight chance of showers
by mid afternoon. waves calm to 2 feet. 
.thursday night...west winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. waves calm to 2 feet. 
.friday...west winds 5 to 15 knots becoming southwest 10 to
20 knots by mid afternoon. waves calm to 2 feet. 
.friday night...west winds 5 to 15 knots. waves calm to 2 feet. 
.saturday...west winds 5 to 15 knots veering north. waves calm to
2 feet. 
.sunday...east winds 5 to 15 knots backing northeast. waves calm
to 2 feet. 

$$

fzus63 kmqt 170801
glfls 
expires:202606172000;;886212

open lake forecast for lake superior
national weather service marquette mi
400 am edt wed jun 17 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... 

29.34 inch low pressure currently over the dakotas moves into 
southern wi by the early evening, sending troughing of at least 
29.5 inches over the lake. the low then pushes into southern quebec 
by thursday morning while deepening to 29.2 inches. this low slowly 
fills on friday while a 30.0 inch high builds over the upper 
mississippi valley, persisting into saturday.




lsz263-172000-
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 wed jun 17 2026

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

$$