fzus63 kmqt 200201
glfls 
expires:202605200800;;322221

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt tue may 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... 

a 30.3 inch high over the northern plains builds to 30.4 inches 
tonight into wednesday as it tracks eastward into the upper great 
lakes. the high pressure shifts east on thursday while leaving 
lingering ridging of at least 30.3 inches over lake superior through 
friday. a 29.9 inch low then lifts into the lower great lakes from 
the southern plains friday night and saturday, but 30.1 inch ridging 
could persists over lake superior the remainder of the weekend.



lsz162-200800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1001 pm edt tue may 19 2026 /901 pm cdt tue may 19 2026/

.rest of tonight...northwest winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. waves calm to 2 feet. 
.wednesday...west winds 5 to 15 knots backing south in the
afternoon. waves calm to 2 feet. 
.wednesday night...southeast winds 5 to 15 knots backing
northeast after midnight. waves calm to 2 feet. 
.thursday...east winds 5 to 15 knots. waves calm to 2 feet. 
.thursday night...east winds 5 to 15 knots. waves calm to 2 feet.
.friday...east winds 10 to 20 knots becoming northeast 15 to
25 knots by mid afternoon. waves building to 2 to 4 feet. 
.friday night...northeast winds 10 to 20 knots. a chance of rain
showers. waves subsiding to 1 to 3 feet. 
.saturday...northeast winds 10 to 20 knots diminishing to 5 to
15 knots. a chance of rain showers. waves subsiding to calm to
2 feet. 
.sunday...southwest winds 5 to 15 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 200201
glfls 
expires:202605200800;;322222

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt tue may 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... 

a 30.3 inch high over the northern plains builds to 30.4 inches 
tonight into wednesday as it tracks eastward into the upper great 
lakes. the high pressure shifts east on thursday while leaving 
lingering ridging of at least 30.3 inches over lake superior through 
friday. a 29.9 inch low then lifts into the lower great lakes from 
the southern plains friday night and saturday, but 30.1 inch ridging 
could persists over lake superior the remainder of the weekend.



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-
1001 pm edt tue may 19 2026

.rest of tonight...northwest winds 5 to 15 knots. waves 2 to
4 feet subsiding to calm to 2 feet. 
.wednesday...northwest winds 5 to 15 knots backing southwest in
the afternoon. waves calm to 2 feet. 
.wednesday night...southeast winds 5 to 15 knots veering south
late. waves calm to 2 feet. 
.thursday...south winds 5 to 15 knots backing east by mid
afternoon. waves calm to 2 feet. 
.thursday night...east winds 5 to 15 knots veering southeast
after midnight. waves calm to 2 feet. 
.friday...east winds 5 to 15 knots increasing to 10 to 20 knots
by mid afternoon. waves building to 2 to 4 feet. 
.friday night...east winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. waves subsiding to 1 to 3 feet. 
.saturday...east winds 5 to 15 knots. a chance of rain showers.
waves building to 2 to 4 feet, then subsiding to calm to 2 feet. 
.sunday...southwest winds 5 to 15 knots backing south. waves calm
to 2 feet. 

$$