fzus63 kmqt 100801
glfls 
expires:202605102000;;315948

open lake forecast for lake superior
national weather service marquette mi
401 am edt sun may 10 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... 

heights continue to rise over lake superior today as a 30.2 inch 
high pressure over the canadian prairies expands eastward. the high 
shifts southeast into the upper great lakes at 30.3 inches tonight 
and monday morning. ridging from the high persists at around 30.2 
inches over lake superior through monday evening before eventually 
being replaced by a 29.7 inch clipper descending over western lake 
superior on tuesday. as the clipper continues eastward tuesday night 
into wednesday, 30.1 inch high pressure ridging moves back over lake 
superior late in the day on wednesday. this ridging is pressed 
southeast to the lower great lakes on thursday while a 29.4 inch low 
emanates off the northern rockies.



lsz162-102000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 am edt sun may 10 2026 /301 am cdt sun may 10 2026/

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

$$

fzus63 kmqt 100801
glfls 
expires:202605102000;;315949

open lake forecast for lake superior
national weather service marquette mi
401 am edt sun may 10 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... 

heights continue to rise over lake superior today as a 30.2 inch 
high pressure over the canadian prairies expands eastward. the high 
shifts southeast into the upper great lakes at 30.3 inches tonight 
and monday morning. ridging from the high persists at around 30.2 
inches over lake superior through monday evening before eventually 
being replaced by a 29.7 inch clipper descending over western lake 
superior on tuesday. as the clipper continues eastward tuesday night 
into wednesday, 30.1 inch high pressure ridging moves back over lake 
superior late in the day on wednesday. this ridging is pressed 
southeast to the lower great lakes on thursday while a 29.4 inch low 
emanates off the northern rockies.



lsz263-102000-
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 may 10 2026

.early this morning...northwest winds 5 to 15 knots. waves 1 to
3 feet. 
.today...northwest winds 5 to 15 knots backing west in the
afternoon. a chance of rain showers by mid afternoon. waves
subsiding to calm to 2 feet. 
.tonight...west winds 5 to 15 knots veering north after midnight,
then diminishing to less than 10 knots late. waves calm to
2 feet. 
.monday...northwest winds less than 10 knots becoming south 5 to
15 knots in the afternoon. waves calm to 2 feet. 
.monday night...southeast winds 10 to 20 knots. a chance of rain
showers, possibly mixed with snow after midnight. waves building
to 2 to 4 feet. 
.tuesday...southeast winds 10 to 20 knots veering west by mid
afternoon. rain showers. waves building to 3 to 6 feet
occasionally to 8 feet. 
.tuesday night...northwest winds 10 to 20 knots veering north
after midnight. waves subsiding to 2 to 4 feet, then building to
3 to 5 feet occasionally to 7 feet. 
.wednesday...northwest winds 10 to 20 knots becoming west 5 to
15 knots. waves subsiding to calm to 2 feet. 
.thursday...south winds 5 to 15 knots increasing to 15 to
25 knots. a chance of rain showers. waves building to 3 to 5 feet
occasionally to 7 feet, then subsiding to 2 to 4 feet. 

$$