fzus63 kmqt 262001
glfls 
expires:202604270800;;571638

open lake forecast for lake superior
national weather service marquette mi
401 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. throughout 
monday, this low moves northeast and maintains strength, arriving in 
wisconsin tomorrow night. the low then crosses lake superior tuesday 
morning, reaching james bay tuesday night. in the wake of the low, 
30.2 inch high pressure builds over the canadian prairie, sending 
30.1 inch high pressure over the lake wednesday. this high 
approaches the great lakes slowly thursday, residing over the lake 
friday at 30.2 inches.



lsz162-270800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 pm edt sun apr 26 2026 /301 pm cdt sun apr 26 2026/

.late this afternoon...northeast winds 5 to 15 knots. a slight
chance of rain showers. waves calm to 2 feet. 
.tonight...northeast winds 10 to 20 knots veering east late. a
slight chance of rain showers. patchy fog after midnight. waves
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 262001
glfls 
expires:202604270800;;571639

open lake forecast for lake superior
national weather service marquette mi
401 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. throughout 
monday, this low moves northeast and maintains strength, arriving in 
wisconsin tomorrow night. the low then crosses lake superior tuesday 
morning, reaching james bay tuesday night. in the wake of the low, 
30.2 inch high pressure builds over the canadian prairie, sending 
30.1 inch high pressure over the lake wednesday. this high 
approaches the great lakes slowly thursday, residing over the lake 
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-
401 pm edt sun apr 26 2026

.late this afternoon...northeast winds 5 to 15 knots. patchy fog.
waves calm to 2 feet. 
.tonight...northeast winds 5 to 15 knots becoming east 10 to
20 knots after midnight. patchy fog through midnight, then areas
of dense fog after midnight. a slight chance of rain showers
after midnight. waves 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. 

$$