fzus63 kmqt 160801
glfls 
expires:202605162000;;643678

open lake forecast for lake superior
national weather service marquette mi
401 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 will shift east today as the 
associated 29.2 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 toward the upper great lakes 
from the central plains by early monday, which lingers over the area 
until tuesday. then, ridging of 30.2 inches builds back over the 
lake by wednesday and builds to 30.3 inches on thursday.



lsz162-162000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 am edt sat may 16 2026 /301 am cdt sat may 16 2026/

.early this morning...west winds 10 to 20 knots. waves 1 to
3 feet. 
.today...west winds 10 to 20 knots increasing to 15 to 25 knots
in the afternoon, then becoming northwest 10 to 20 knots late.
waves subsiding to calm to 2 feet. 
.tonight...north winds 5 to 15 knots veering northeast after
midnight, then becoming east 10 to 20 knots late. waves building
to 2 to 4 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. 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
10 to 14 feet occasionally to 18 feet. 
.tuesday...north gales to 35 knots becoming northwest 10 to
20 knots. rain showers likely. waves subsiding to 2 to 4 feet. 
.wednesday...northwest winds 5 to 15 knots backing west. waves
subsiding to calm to 2 feet. 

$$

fzus63 kmqt 160801
glfls 
expires:202605162000;;643679

open lake forecast for lake superior
national weather service marquette mi
401 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 will shift east today as the 
associated 29.2 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 toward the upper great lakes 
from the central plains by early monday, which lingers over the area 
until tuesday. then, ridging of 30.2 inches builds back over the 
lake by wednesday and builds to 30.3 inches on 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-
401 am edt sat may 16 2026

.early this morning...west winds 5 to 15 knots. waves 2 to
4 feet. 
.today...west winds 10 to 20 knots veering northwest late. waves
subsiding to 1 to 3 feet, then building to 2 to 4 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. waves subsiding
to 3 to 6 feet occasionally to 8 feet. 
.monday night...northeast winds 20 to 30 knots. rain showers.
waves building to 10 to 14 feet occasionally to 18 feet. 
.tuesday...north gales to 35 knots becoming northwest 20 to
30 knots. waves subsiding to 8 to 11 feet occasionally to
14 feet, then building to 9 to 12 feet occasionally to 15 feet. 
.wednesday...northwest winds 15 to 25 knots becoming west 5 to
15 knots. waves subsiding to calm to 2 feet. 

$$