fzus63 kmqt 262001
glfls 
expires:202609270800;;101830

open lake forecast for lake superior
national weather service marquette mi
401 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 broad area of 30.3 inch high pressure over james bay today shifts 
east toward northern quebec tonight while a 29.4 inch low deepens to 
29.3 inches over northern saskatchewan and a 29.3 inch nor'easter 
churns off the coast of long island. sunday, lake superior will be 
between the 30.3 inch high over the canadian maritimes, the canadian 
low over the manitoba/nunuvut line at 29.5 inches, the nor'easter 
over new jersey at 29.7 inches, and a high pressure movign 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 northern ontario at 29.7 inches late tuesday. wednesday, 
lake superior will be between a 29.5 inch low over northern manitoba 
and a 30.1 inch high off the coast of the carolinas. thursday, the 
low will cross hudson bay, dragging along a 29.7 inch trough across 
lake superior.




lsz162-270800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 pm edt sat sep 26 2026 /301 pm cdt sat sep 26 2026/

.late this afternoon...northeast winds 10 to 20 knots. waves calm
to 2 feet. 
.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
building to 1 to 3 feet, then subsiding to calm to 2 feet. 

$$

fzus63 kmqt 262001
glfls 
expires:202609270800;;101831

open lake forecast for lake superior
national weather service marquette mi
401 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 broad area of 30.3 inch high pressure over james bay today shifts 
east toward northern quebec tonight while a 29.4 inch low deepens to 
29.3 inches over northern saskatchewan and a 29.3 inch nor'easter 
churns off the coast of long island. sunday, lake superior will be 
between the 30.3 inch high over the canadian maritimes, the canadian 
low over the manitoba/nunuvut line at 29.5 inches, the nor'easter 
over new jersey at 29.7 inches, and a high pressure movign 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 northern ontario at 29.7 inches late tuesday. wednesday, 
lake superior will be between a 29.5 inch low over northern manitoba 
and a 30.1 inch high off the coast of the carolinas. thursday, the 
low will cross hudson bay, dragging along a 29.7 inch trough across 
lake superior.




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-
401 pm edt sat sep 26 2026

.late this afternoon...east winds 5 to 15 knots. waves calm to
2 feet. 
.tonight...southeast winds 5 to 15 knots veering south after
midnight. 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 3 to 5 feet occasionally to 7 feet, then subsiding to
1 to 3 feet. 

$$