fzus63 kmqt 162002
glfls 
expires:202605170800;;671058

open lake forecast for lake superior
national weather service marquette mi
401 pm edt sat may 16 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 29.7 inch trough will shift east of lake superior this evening as 
an associated 29.1 inch low moves from hudson bay to northern 
quebec. in its wake, ridging of 30.1 inches will build over the lake 
from northern ontario tonight into sunday. this is followed by 
another 29.7 inch trough extending northeast over the upper great 
lakes from the central plains by early monday. a low of around 29.6 
inches then moves over the lake on tuesday. ridging of 30.2 to 30.3 
inches builds back over the lake wednesday into thursday.



lsz162-170800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 pm edt sat may 16 2026 /301 pm cdt sat may 16 2026/

.late this afternoon...northwest winds 10 to 20 knots. waves 1 to
3 feet. 
.tonight...north winds 5 to 15 knots becoming northeast 10 to
20 knots after midnight, then becoming east 15 to 25 knots late.
waves subsiding to calm to 2 feet, then building to 2 to 4 feet. 
.sunday...east winds 20 to 30 knots becoming northeast to
30 knots with a few gale force gusts to 35 knots possible in the
afternoon. a chance of rain showers by mid afternoon. waves
building to 7 to 10 feet occasionally to 13 feet. 
.sunday night...northeast winds to 30 knots with a few gale force
gusts to 35 knots possible diminishing to 15 to 25 knots. rain
showers and a chance of thunderstorms. waves building to 8 to
11 feet occasionally to 14 feet, then subsiding to 3 to 5 feet
occasionally to 7 feet. 
.monday...northeast winds 10 to 20 knots. rain showers likely
through early afternoon. a slight chance of thunderstorms. a
chance of rain showers by mid afternoon. waves subsiding to 2 to
4 feet, then building to 3 to 5 feet occasionally to 7 feet. 
.monday night...northeast winds 20 to 30 knots. a chance of rain
showers through midnight. rain showers after midnight. waves
building to 8 to 11 feet occasionally to 14 feet. 
.tuesday...northeast winds 20 to 30 knots becoming north 15 to
25 knots by mid afternoon. rain showers through early afternoon.
waves subsiding to 3 to 6 feet occasionally to 8 feet. 
.tuesday night...north winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. waves subsiding to calm to 2 feet. 
.wednesday...northwest winds 5 to 15 knots backing west. waves
calm to 2 feet. 
.thursday...south winds 5 to 15 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 162002
glfls 
expires:202605170800;;671059

open lake forecast for lake superior
national weather service marquette mi
401 pm edt sat may 16 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 29.7 inch trough will shift east of lake superior this evening as 
an associated 29.1 inch low moves from hudson bay to northern 
quebec. in its wake, ridging of 30.1 inches will build over the lake 
from northern ontario tonight into sunday. this is followed by 
another 29.7 inch trough extending northeast over the upper great 
lakes from the central plains by early monday. a low of around 29.6 
inches then moves over the lake on tuesday. ridging of 30.2 to 30.3 
inches builds back over the lake wednesday into thursday.



lsz263-170800-
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 may 16 2026

.late this afternoon...northwest winds 10 to 20 knots. waves 1 to
3 feet. 
.tonight...north winds 5 to 15 knots veering northeast after
midnight. waves subsiding to calm to 2 feet. 
.sunday...east winds 10 to 20 knots increasing to 20 to 30 knots
in the afternoon. a chance of rain showers by mid afternoon.
waves building to 5 to 8 feet occasionally to 10 feet. 
.sunday night...east winds 20 to 30 knots diminishing to 15 to
25 knots after midnight, then backing northeast late. rain
showers and a chance of thunderstorms. waves subsiding to 3 to
6 feet occasionally to 8 feet. 
.monday...north winds 10 to 20 knots veering northeast by mid
afternoon. rain showers through early afternoon. a slight chance
of thunderstorms. a chance of rain showers by mid afternoon.
waves subsiding to 3 to 5 feet occasionally to 7 feet. 
.monday night...northeast winds 20 to 30 knots. a chance of rain
showers through midnight, then rain showers after midnight. waves
building to 8 to 11 feet occasionally to 14 feet. 
.tuesday...north winds 20 to 30 knots. rain showers likely
through early afternoon. waves subsiding to 5 to 8 feet
occasionally to 10 feet. 
.tuesday night...north winds 15 to 25 knots. waves subsiding to
3 to 5 feet occasionally to 7 feet. 
.wednesday...southwest winds 10 to 20 knots diminishing to 5 to
15 knots. waves subsiding to calm to 2 feet. 
.thursday...southwest winds 5 to 15 knots backing south. waves
calm to 2 feet. 

$$