fzus63 kmqt 272001
glfls 
expires:202606280800;;011575

open lake forecast for lake superior
national weather service marquette mi
400 pm edt sat jun 27 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... 

tonight, low pressure will push north out of eastern montana and 
deepen over southern saskatchewan to 29.3 inches as high pressure 
retreats to the hudson bay, remaining at 30.1 inches. the low pushes 
into manitoba and the dakotas early monday morning while the high 
shifts southeast to just east of the lower great lakes. tuesday into 
wednesday, the low moves through northern ontario at around 29.5 
inches as 30.1 inch high pressure extends over much of the east 
coast. by thursday morning, the low will move east through quebec 
while 30.1 inch high pressure builds south of the great lakes.




lsz162-280800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 pm edt sat jun 27 2026 /300 pm cdt sat jun 27 2026/

.late this afternoon...northeast winds 10 to 20 knots. waves calm
to 2 feet building to 1 to 3 feet. 
.tonight...northeast winds 10 to 20 knots diminishing to 5 to
15 knots after midnight, then veering east late. a slight chance
of showers. waves subsiding to calm to 2 feet, then building to
1 to 3 feet. 
.sunday...east winds 10 to 20 knots increasing to 15 to 25 knots
in the afternoon. a slight chance of showers by mid afternoon.
waves building to 2 to 4 feet. 
.sunday night...east winds 15 to 25 knots diminishing to 10 to
20 knots after midnight. a chance of showers and thunderstorms.
waves building to 3 to 5 feet occasionally to 7 feet, then
subsiding to 1 to 3 feet. 
.monday...northeast winds 10 to 20 knots increasing to 15 to
25 knots by mid afternoon. a chance of showers and a slight
chance of thunderstorms. waves subsiding to calm to 2 feet, then
building to 2 to 4 feet. 
.monday night...northeast winds 15 to 25 knots diminishing to
10 to 20 knots after midnight. showers likely and a chance of
thunderstorms. waves subsiding to 1 to 3 feet. 
.tuesday...southwest winds 10 to 20 knots. a chance of showers
and thunderstorms by mid afternoon. waves subsiding to calm to
2 feet. 
.tuesday night...southwest winds 10 to 20 knots. a chance of
showers. waves calm to 2 feet. 
.wednesday...southwest winds 10 to 20 knots becoming south 5 to
15 knots. a chance of showers and thunderstorms. waves calm to
2 feet. 
.thursday...east winds 5 to 15 knots backing north. a chance of
showers and thunderstorms. waves calm to 2 feet. 

$$

fzus63 kmqt 272001
glfls 
expires:202606280800;;011576

open lake forecast for lake superior
national weather service marquette mi
400 pm edt sat jun 27 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... 

tonight, low pressure will push north out of eastern montana and 
deepen over southern saskatchewan to 29.3 inches as high pressure 
retreats to the hudson bay, remaining at 30.1 inches. the low pushes 
into manitoba and the dakotas early monday morning while the high 
shifts southeast to just east of the lower great lakes. tuesday into 
wednesday, the low moves through northern ontario at around 29.5 
inches as 30.1 inch high pressure extends over much of the east 
coast. by thursday morning, the low will move east through quebec 
while 30.1 inch high pressure builds south of the great lakes.




lsz263-280800-
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 pm edt sat jun 27 2026

.late this afternoon...northeast winds 10 to 20 knots. waves calm
to 2 feet. 
.tonight...east winds 10 to 20 knots diminishing to 5 to 15 knots
after midnight. a slight chance of showers. waves building to
1 to 3 feet, then subsiding to calm to 2 feet. 
.sunday...east winds 5 to 15 knots increasing to 15 to 25 knots.
a slight chance of showers by mid afternoon. waves building to
3 to 5 feet occasionally to 7 feet. 
.sunday night...east winds 15 to 25 knots becoming southeast
10 to 20 knots after midnight, then backing east late. a chance
of showers and thunderstorms. waves subsiding to 1 to 3 feet. 
.monday...east winds 5 to 15 knots becoming northeast 15 to
25 knots by mid afternoon. a chance of showers and a slight
chance of thunderstorms. waves building to 2 to 4 feet. 
.monday night...east winds 15 to 25 knots becoming southwest
10 to 20 knots after midnight. a chance of showers through
midnight. showers likely after midnight. waves building to 3 to
5 feet occasionally to 7 feet, then subsiding to 2 to 4 feet. 
.tuesday...southwest winds 10 to 20 knots. a chance of showers
and thunderstorms by mid afternoon. waves subsiding to calm to
2 feet. 
.tuesday night...southwest winds 10 to 20 knots. a chance of
showers. waves building to 1 to 3 feet. 
.wednesday...southwest winds 10 to 20 knots becoming south 5 to
15 knots. a chance of showers and thunderstorms. waves subsiding
to calm to 2 feet. 
.thursday...southwest winds 5 to 15 knots veering west. a chance
of showers. waves calm to 2 feet. 

$$