fzus63 kmqt 270201
glfls 
expires:202609270800;;114249

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt sat sep 26 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...

a 30.3 inch high pressure shifts east over northern quebec tonight 
while a 29.3 inch low spins just north of saskatchewan and a 29.3 
inch nor'easter churns off the coast of long island. on sunday, lake 
superior will be between the 30.3 inch high moving to the canadian 
maritimes, the canadian low over nunavut at 29.2 inches, the 
nor'easter over new jersey at 29.6 inches, and a high pressure 
moving from the rockies to the dakotas at 30.1 inches. the latter 
high moves directly over the lake monday as a 29.7 inch low develops 
over colorado. this low ejects northeast late monday through 
tuesday, reaching far northern ontario at 29.7 inches late tuesday. 
tuesday night through wednesday night, a 29.3 inch low moves across 
the far northern canadian prairie to hudson bay, dragging a 29.7 
inch trough across lake superior wednesday night. high pressure of 
30.2 inches returns to the great lakes by friday.




lsz162-270800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1001 pm edt sat sep 26 2026 /901 pm cdt sat sep 26 2026/

.rest of tonight...east winds 5 to 15 knots veering south after
midnight. a chance of showers. waves calm to 2 feet. 
.sunday...south winds 5 to 15 knots veering southwest in the
afternoon. a slight chance of showers through early afternoon.
waves calm to 2 feet. 
.sunday night...west winds 5 to 15 knots veering north late.
waves calm to 2 feet. 
.monday...east winds less than 10 knots increasing to 5 to
15 knots by mid afternoon. waves calm to 2 feet. 
.monday night...east winds 5 to 15 knots veering south after
midnight. waves calm to 2 feet. 
.tuesday...south winds 10 to 20 knots veering southwest by mid
afternoon. showers likely. waves calm to 2 feet. 
.tuesday night...southwest winds 5 to 15 knots. a chance of
showers. waves calm to 2 feet. 
.wednesday...southwest winds 5 to 15 knots. waves calm to 2 feet.
.thursday...west winds 10 to 20 knots veering northwest. waves
calm to 2 feet. 

$$

fzus63 kmqt 270201
glfls 
expires:202609270800;;114250

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt sat sep 26 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...

a 30.3 inch high pressure shifts east over northern quebec tonight 
while a 29.3 inch low spins just north of saskatchewan and a 29.3 
inch nor'easter churns off the coast of long island. on sunday, lake 
superior will be between the 30.3 inch high moving to the canadian 
maritimes, the canadian low over nunavut at 29.2 inches, the 
nor'easter over new jersey at 29.6 inches, and a high pressure 
moving from the rockies to the dakotas at 30.1 inches. the latter 
high moves directly over the lake monday as a 29.7 inch low develops 
over colorado. this low ejects northeast late monday through 
tuesday, reaching far northern ontario at 29.7 inches late tuesday. 
tuesday night through wednesday night, a 29.3 inch low moves across 
the far northern canadian prairie to hudson bay, dragging a 29.7 
inch trough across lake superior wednesday night. high pressure of 
30.2 inches returns to the great lakes by friday.




lsz263-270800-
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-
1001 pm edt sat sep 26 2026

.rest of tonight...south winds 5 to 15 knots. a slight chance of
showers after midnight. waves calm to 2 feet. 
.sunday...south winds 5 to 15 knots veering southwest in the
afternoon. a slight chance of showers through early afternoon.
waves calm to 2 feet. 
.sunday night...west winds 5 to 15 knots diminishing to less than
10 knots after midnight, then becoming north 5 to 15 knots late.
waves calm to 2 feet. 
.monday...north winds 5 to 15 knots veering east by mid
afternoon. waves calm to 2 feet. 
.monday night...southeast winds 5 to 15 knots veering south after
midnight. waves calm to 2 feet. 
.tuesday...south winds 10 to 20 knots increasing to 15 to
25 knots by mid afternoon. showers likely by mid afternoon. waves
calm to 2 feet. 
.tuesday night...southwest winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. a chance of showers. waves calm to
2 feet. 
.wednesday...southwest winds 5 to 15 knots. waves calm to 2 feet.
.thursday...west winds 15 to 25 knots veering northwest. waves
building to 1 to 3 feet. 

$$