fzus63 kmqt 200201
glfls 
expires:202606200800;;045880

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt fri jun 19 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... 

pressure over lake superior remains at 29.8 to 29.9 tonight into 
tomorrow morning. ridging over the mid-mississippi valley builds to 
30.0 inches tonight into tomorrow, supporting weak 29.9 inches 
ridging over lake superior by tomorrow afternoon. 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 
on wednesday. 




lsz162-200800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1000 pm edt fri jun 19 2026 /900 pm cdt fri jun 19 2026/

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

$$

fzus63 kmqt 200201
glfls 
expires:202606200800;;045881

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt fri jun 19 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... 

pressure over lake superior remains at 29.8 to 29.9 tonight into 
tomorrow morning. ridging over the mid-mississippi valley builds to 
30.0 inches tonight into tomorrow, supporting weak 29.9 inches 
ridging over lake superior by tomorrow afternoon. 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 
on wednesday. 




lsz263-200800-
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 fri jun 19 2026

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

$$