fzus63 kmqt 270801
glfls 
expires:202609272000;;127961

open lake forecast for lake superior
national weather service marquette mi
401 am edt sun sep 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...

a 30.3 inch high shifts from northern quebec to the canadian 
maritimes today while a 29.3 inch low spins over nunavut and a 29.5 
inch nor'easter weakens to 29.7 inches over new jersey. lake 
superior will remain under 30.1 inch ridging between these three 
features through monday. a 29.7 inch low develops in the lee of the 
northern rockies on monday and ejects northeast to northern ontario 
at 29.6 inches by 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 upper 
great lakes by friday.




lsz162-272000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 am edt sun sep 27 2026 /301 am cdt sun sep 27 2026/

.early this morning...south winds 5 to 15 knots. a chance of
showers. waves calm to 2 feet. 
.today...south winds 5 to 15 knots veering southwest in the
afternoon. a slight chance of showers through early afternoon.
waves calm to 2 feet. 
.tonight...west winds 5 to 15 knots veering north late. waves
calm to 2 feet. 
.monday...northeast winds less than 10 knots becoming east 5 to
15 knots in the 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. a chance of rain through early afternoon, then rain
likely by mid afternoon. waves building to 1 to 3 feet, then
subsiding to calm to 2 feet. 
.tuesday night...south winds 10 to 20 knots becoming southwest
5 to 15 knots after midnight. a chance of rain. waves calm to
2 feet. 
.wednesday...southwest winds 5 to 15 knots becoming west 10 to
20 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 270801
glfls 
expires:202609272000;;127962

open lake forecast for lake superior
national weather service marquette mi
401 am edt sun sep 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...

a 30.3 inch high shifts from northern quebec to the canadian 
maritimes today while a 29.3 inch low spins over nunavut and a 29.5 
inch nor'easter weakens to 29.7 inches over new jersey. lake 
superior will remain under 30.1 inch ridging between these three 
features through monday. a 29.7 inch low develops in the lee of the 
northern rockies on monday and ejects northeast to northern ontario 
at 29.6 inches by 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 upper 
great lakes by friday.




lsz263-272000-
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 am edt sun sep 27 2026

.early this morning...south winds 5 to 15 knots. a slight chance
of showers. waves calm to 2 feet. 
.today...south winds 5 to 15 knots veering southwest in the
afternoon. waves calm to 2 feet. 
.tonight...west winds 5 to 15 knots veering north late. waves
calm to 2 feet. 
.monday...northeast winds 5 to 15 knots diminishing to less than
10 knots in the afternoon, then becoming east 5 to 15 knots late.
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 15 to 25 knots. a chance of rain by mid
afternoon. waves building to 1 to 3 feet. 
.tuesday night...south winds 10 to 20 knots becoming southwest
5 to 15 knots after midnight. a chance of rain. waves subsiding
to calm to 2 feet. 
.wednesday...southwest winds 10 to 20 knots veering west. waves
calm to 2 feet. 
.thursday...west winds 20 to 30 knots becoming northwest 15 to
25 knots. waves building to 2 to 4 feet, then subsiding to 1 to
3 feet. 

$$