fzus63 kmqt 110802
glfls 
expires:202605112000;;371078

open lake forecast for lake superior
national weather service marquette mi
401 am edt mon may 11 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 continues over the upper great lakes today before 
departing for the lower great lakes this evening. behind it, a 29.6 
inch clipper descends over far western lake superior on tuesday. as 
the clipper continues eastward towards the st. lawrence seaway 
tuesday night and 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 thursday into friday 
while a 29.1 inch low emanates off the northern rockies. this low is 
expected to bring troughing of 29.6 inches over lake superior on 
friday.



lsz162-112000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 am edt mon may 11 2026 /301 am cdt mon may 11 2026/

.early this morning...north winds less than 10 knots. waves calm
to 2 feet. 
.today...north winds less than 10 knots becoming southeast 5 to
15 knots in the afternoon. waves calm to 2 feet. 
.tonight...east winds 10 to 20 knots. rain showers likely and a
slight chance of thunderstorms after midnight. waves building to
1 to 3 feet. 
.tuesday...southeast winds 10 to 20 knots veering northwest late.
a chance of rain showers. waves building to 3 to 5 feet
occasionally to 7 feet, then subsiding to 1 to 3 feet. 
.tuesday night...northwest winds 10 to 20 knots veering north
after midnight. a slight chance of rain showers through midnight.
waves 1 to 3 feet. 
.wednesday...northwest winds 10 to 20 knots becoming west 5 to
15 knots by mid afternoon. waves subsiding to calm to 2 feet. 
.wednesday night...north winds 5 to 15 knots diminishing to less
than 10 knots after midnight. waves calm to 2 feet. 
.thursday...east winds 5 to 15 knots becoming south 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. 
.friday...south winds 15 to 25 knots becoming north 10 to
20 knots. a chance of rain showers. waves subsiding to 1 to
3 feet, then building to 2 to 4 feet. 

$$

fzus63 kmqt 110802
glfls 
expires:202605112000;;371079

open lake forecast for lake superior
national weather service marquette mi
401 am edt mon may 11 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 continues over the upper great lakes today before 
departing for the lower great lakes this evening. behind it, a 29.6 
inch clipper descends over far western lake superior on tuesday. as 
the clipper continues eastward towards the st. lawrence seaway 
tuesday night and 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 thursday into friday 
while a 29.1 inch low emanates off the northern rockies. this low is 
expected to bring troughing of 29.6 inches over lake superior on 
friday.



lsz263-112000-
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 mon may 11 2026

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

$$