fzus63 kmqt 161402
glfls 
expires:202605162000;;656230

open lake forecast for lake superior
national weather service marquette mi
1002 am 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 29.6 inch trough over the lake this morning will shift east today 
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. troughing of around 
29.8 inches then lingers over the lake through tuesday. ridging of 
30.2 to 30.2 inches builds back over the lake wednesday into 
thursday.



lsz162-162000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1002 am edt sat may 16 2026 /902 am cdt sat may 16 2026/

.rest of today...west winds 15 to 25 knots becoming northwest
10 to 20 knots late. waves 1 to 3 feet. 
.tonight...north winds 5 to 15 knots veering northeast after
midnight, then becoming east 10 to 20 knots late. waves subsiding
to calm to 2 feet, then building to 1 to 3 feet. 
.sunday...east winds 20 to 30 knots backing northeast in the
afternoon, then increasing to 30 knots with a few gale force
gusts to 35 knots possible late. a slight chance of rain showers
through early afternoon, then rain showers by mid afternoon.
waves building to 8 to 11 feet occasionally to 14 feet. 
.sunday night...northeast gales to 35 knots diminishing to 15 to
25 knots after midnight. rain showers and a chance of
thunderstorms. waves subsiding to 3 to 6 feet occasionally to
8 feet. 
.monday...northeast winds 10 to 20 knots increasing to 15 to
25 knots by mid afternoon. rain showers likely and a slight
chance of thunderstorms. waves subsiding to 3 to 6 feet
occasionally to 8 feet. 
.monday night...northeast winds 20 to 30 knots increasing to
gales to 35 knots after midnight. rain showers. waves building to
9 to 12 feet occasionally to 15 feet. 
.tuesday...north gales to 35 knots becoming northwest 10 to
20 knots. rain showers likely. waves building to 10 to 14 feet
occasionally to 18 feet, then subsiding to calm to 2 feet. 
.wednesday...northwest winds 5 to 15 knots backing west. waves
calm to 2 feet. 

$$

fzus63 kmqt 161402
glfls 
expires:202605162000;;656231

open lake forecast for lake superior
national weather service marquette mi
1002 am 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 29.6 inch trough over the lake this morning will shift east today 
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. troughing of around 
29.8 inches then lingers over the lake through tuesday. ridging of 
30.2 to 30.2 inches builds back over the lake wednesday into 
thursday.



lsz263-162000-
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-
1002 am edt sat may 16 2026

.rest of today...west winds 10 to 20 knots veering northwest
late. waves 1 to 3 feet building to 2 to 4 feet, then subsiding
to 1 to 3 feet. 
.tonight...north winds 5 to 15 knots veering east late. waves
subsiding to calm to 2 feet. 
.sunday...east winds 10 to 20 knots increasing to 20 to 30 knots
in the afternoon. rain showers likely by mid afternoon. waves
building to 6 to 9 feet occasionally to 11 feet. 
.sunday night...east winds 20 to 30 knots diminishing to 15 to
25 knots after midnight. rain showers and a chance of
thunderstorms. waves subsiding to 4 to 7 feet occasionally to
9 feet. 
.monday...northeast winds 10 to 20 knots increasing to 15 to
25 knots by mid afternoon. rain showers likely and a slight
chance of thunderstorms. waves subsiding to 3 to 6 feet
occasionally to 8 feet. 
.monday night...northeast winds 20 to 30 knots. rain showers.
waves building to 9 to 12 feet occasionally to 15 feet. 
.tuesday...north gales to 35 knots becoming northwest 20 to
30 knots. waves building to 10 to 14 feet occasionally to
18 feet, then subsiding to 3 to 5 feet occasionally to 7 feet. 
.wednesday...northwest winds 15 to 25 knots becoming west 5 to
15 knots. waves subsiding to calm to 2 feet. 

$$