fzus63 kmqt 270201
glfls 
expires:202604270800;;584975

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt sun apr 26 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...

30.1 inch high pressure remains over the lake tonight. a 29.4 inch 
low over the central plains tonight moves northeast and arrives in 
wisconsin late monday afternoon. the low then crosses lake superior 
monday night at 29.3 inches, reaching james bay late tuesday. in the 
wake of the low, 30.2 inch high pressure builds over the canadian 
prairie, sending 30.0 inch high pressure ridging over the lake 
tuesday night through wednesday. this high approaches the great 
lakes slowly thursday and eventually resides over lake superior on 
friday at 30.2 inches.



lsz162-270800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1001 pm edt sun apr 26 2026 /901 pm cdt sun apr 26 2026/

...dense fog advisory in effect until 8 am edt /7 am cdt/
monday...

.rest of tonight...northeast winds 10 to 20 knots veering east
late. patchy fog. a slight chance of rain showers. waves 1 to
3 feet building to 3 to 6 feet occasionally to 8 feet. 
.monday...east winds 15 to 25 knots backing northeast in the
afternoon. patchy fog through early afternoon. rain showers. a
slight chance of thunderstorms by mid afternoon. waves 3 to
6 feet occasionally to 8 feet. 
.monday night...northeast winds 15 to 25 knots backing northwest
after midnight, then increasing to 20 to 30 knots late. rain
showers. waves subsiding to 3 to 5 feet occasionally to 7 feet. 
.tuesday...northwest winds 20 to 30 knots becoming west 15 to
25 knots by mid afternoon. a slight chance of rain showers
through early afternoon. waves subsiding to 1 to 3 feet. 
.tuesday night...northwest winds 10 to 20 knots. waves subsiding
to calm to 2 feet. 
.wednesday...west winds 10 to 20 knots becoming southwest 5 to
15 knots by mid afternoon. waves calm to 2 feet. 
.wednesday night...north winds 5 to 15 knots. waves calm to
2 feet. 
.thursday...north winds 5 to 15 knots. waves calm to 2 feet. 
.friday...north winds 5 to 15 knots diminishing to less than
10 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 270201
glfls 
expires:202604270800;;584976

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt sun apr 26 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...

30.1 inch high pressure remains over the lake tonight. a 29.4 inch 
low over the central plains tonight moves northeast and arrives in 
wisconsin late monday afternoon. the low then crosses lake superior 
monday night at 29.3 inches, reaching james bay late tuesday. in the 
wake of the low, 30.2 inch high pressure builds over the canadian 
prairie, sending 30.0 inch high pressure ridging over the lake 
tuesday night through wednesday. this high approaches the great 
lakes slowly thursday and eventually resides over lake superior on 
friday at 30.2 inches.



lsz263-270800-
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 sun apr 26 2026

...dense fog advisory in effect until 8 am edt monday...

.rest of tonight...northeast winds 5 to 15 knots becoming east
10 to 20 knots after midnight. patchy fog. a slight chance of
rain showers after midnight. waves calm to 2 feet building to
2 to 4 feet. 
.monday...east winds 10 to 20 knots increasing to 15 to 25 knots
in the afternoon. patchy fog through early afternoon. a chance of
rain showers through early afternoon, then rain showers and a
slight chance of thunderstorms by mid afternoon. waves building
to 5 to 8 feet occasionally to 10 feet. 
.monday night...east winds 15 to 25 knots backing north after
midnight, then becoming northwest 20 to 30 knots late. a slight
chance of thunderstorms through midnight. rain showers. waves
building to 6 to 9 feet occasionally to 11 feet, then subsiding
to 4 to 7 feet occasionally to 9 feet. 
.tuesday...west winds 20 to 30 knots. a chance of rain showers
through early afternoon. waves building to 5 to 8 feet
occasionally to 10 feet, then subsiding to 3 to 6 feet
occasionally to 8 feet. 
.tuesday night...northwest winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. waves subsiding to calm to 2 feet. 
.wednesday...west winds 5 to 15 knots backing southwest by mid
afternoon. waves calm to 2 feet. 
.wednesday night...west winds 5 to 15 knots veering north after
midnight. waves calm to 2 feet. 
.thursday...north winds 5 to 15 knots. waves calm to 2 feet. 
.friday...north winds 5 to 15 knots backing west. waves calm to
2 feet. 

$$