fzus63 kmqt 080801
glfls 
expires:202605082000;;207434

open lake forecast for lake superior
national weather service marquette mi
401 am edt fri may 8 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... 

weak troughing of around 29.8 inches this morning deepens to 29.6 
inches by this evening thanks to a 29.8 inch low currently over the 
black hills phasing with a 29.3 inch low over hudson bay. this 
eventually creates a 29.5 inch low over lake superior saturday 
morning that ejects eastward into ontario and eventually western 
quebec by saturday afternoon. meanwhile, a 30.1 inch high over the 
canadian prairies begins to push eastward on saturday. with the high 
digging into the northern plains at 30.3 inches saturday night into 
sunday morning, expect the ridging over lake superior to steadily 
increase with time early next week. by monday afternoon, the 30.3 
inch high moves over the western great lakes. in its wake, a 29.7 
inch clipper low digs through the canadian prairies into the upper 
midwest, arriving over the upper mississippi valley by tuesday.



lsz162-082000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 am edt fri may 8 2026 /301 am cdt fri may 8 2026/

.early this morning...southwest winds 5 to 15 knots. waves calm
to 2 feet. 
.today...southwest winds 5 to 15 knots. sprinkles by mid
afternoon. waves calm to 2 feet. 
.tonight...north winds 5 to 15 knots backing west after midnight,
then becoming northwest 10 to 20 knots late. a chance of rain
showers through midnight. waves calm to 2 feet. 
.saturday...northwest winds 10 to 20 knots diminishing to 5 to
15 knots late. waves calm to 2 feet. 
.saturday night...northwest winds 10 to 20 knots. waves calm to
2 feet. 
.sunday...northwest winds 10 to 20 knots becoming west 5 to
15 knots by mid afternoon. waves calm to 2 feet. 
.sunday night...northwest winds 5 to 15 knots veering north after
midnight. waves calm to 2 feet. 
.monday...south winds 5 to 15 knots backing east. waves calm to
2 feet. 
.tuesday...east winds 10 to 20 knots becoming north 5 to
15 knots. a chance of rain showers. waves calm to 2 feet. 

$$

fzus63 kmqt 080801
glfls 
expires:202605082000;;207435

open lake forecast for lake superior
national weather service marquette mi
401 am edt fri may 8 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... 

weak troughing of around 29.8 inches this morning deepens to 29.6 
inches by this evening thanks to a 29.8 inch low currently over the 
black hills phasing with a 29.3 inch low over hudson bay. this 
eventually creates a 29.5 inch low over lake superior saturday 
morning that ejects eastward into ontario and eventually western 
quebec by saturday afternoon. meanwhile, a 30.1 inch high over the 
canadian prairies begins to push eastward on saturday. with the high 
digging into the northern plains at 30.3 inches saturday night into 
sunday morning, expect the ridging over lake superior to steadily 
increase with time early next week. by monday afternoon, the 30.3 
inch high moves over the western great lakes. in its wake, a 29.7 
inch clipper low digs through the canadian prairies into the upper 
midwest, arriving over the upper mississippi valley by tuesday.



lsz263-082000-
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 fri may 8 2026

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

$$