fzus63 kmqt 190201
glfls 
expires:202606190800;;989449

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt thu jun 18 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 30.0 inch high will build over the mid-mississippi valley tonight 
into saturday, supporting weak 29.9 inches ridging over lake 
superior by saturday. ridging continues into monday, when it builds 
to 30.1 inches and then 30.2 inches by tuesday morning. a weak 30.0 
inch low moves through the great lakes wednesday. 




lsz162-190800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1000 pm edt thu jun 18 2026 /900 pm cdt thu jun 18 2026/

.rest of tonight...west winds 10 to 20 knots diminishing to 5 to
15 knots late. waves calm to 2 feet. 
.friday...west winds 5 to 15 knots backing southwest in the
afternoon. a chance of showers and a slight chance of
thunderstorms by mid afternoon. waves calm to 2 feet. 
.friday night...southwest winds 5 to 15 knots veering west after
midnight. a slight chance of showers. waves calm to 2 feet. 
.saturday...west winds 5 to 15 knots backing southwest by mid
afternoon. a slight chance of showers by mid afternoon. waves
calm to 2 feet. 
.saturday night...west winds 5 to 15 knots becoming northwest
less than 10 knots after midnight. waves calm to 2 feet. 
.sunday...north winds 5 to 15 knots veering east by mid
afternoon. waves calm to 2 feet. 
.sunday night...northeast winds 5 to 15 knots. waves calm to
2 feet. 
.monday...northeast winds 5 to 15 knots becoming north less than
10 knots. waves calm to 2 feet. 
.tuesday...northeast winds 5 to 15 knots. a chance of showers.
waves calm to 2 feet. 

$$

fzus63 kmqt 190201
glfls 
expires:202606190800;;989450

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt thu jun 18 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 30.0 inch high will build over the mid-mississippi valley tonight 
into saturday, supporting weak 29.9 inches ridging over lake 
superior by saturday. ridging continues into monday, when it builds 
to 30.1 inches and then 30.2 inches by tuesday morning. a weak 30.0 
inch low moves through the great lakes wednesday. 




lsz263-190800-
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-
1000 pm edt thu jun 18 2026

.rest of tonight...west winds 5 to 15 knots veering northwest
late. waves 1 to 3 feet subsiding to calm to 2 feet. 
.friday...west winds 5 to 15 knots becoming southwest 10 to
20 knots in the afternoon. waves building to 1 to 3 feet. 
.friday night...southwest winds 5 to 15 knots veering west late.
a slight chance of showers through midnight. waves subsiding to
calm to 2 feet. 
.saturday...west winds 5 to 15 knots backing southwest by mid
afternoon. a slight chance of showers. waves calm to 2 feet. 
.saturday night...southwest winds less than 10 knots veering west
after midnight. waves calm to 2 feet. 
.sunday...northwest winds less than 10 knots becoming northeast
5 to 15 knots by mid afternoon. waves calm to 2 feet. 
.sunday night...northeast winds 5 to 15 knots backing north after
midnight. waves calm to 2 feet. 
.monday...northeast winds 5 to 15 knots backing northwest. waves
calm to 2 feet. 
.tuesday...northeast winds 5 to 15 knots diminishing to less than
10 knots. a chance of rain showers. waves calm to 2 feet. 

$$