fzus63 kmqt 260801
glfls 
expires:202604262000;;542645

open lake forecast for lake superior
national weather service marquette mi
401 am 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...

ridging resides over lake superior at 30.1 inches this morning as 
30.4 inch high pressure is over northern quebec. the pattern remains 
stable over lake superior today while a 29.4 inch colorado low 
develops. throughout monday, this low moves northeast and maintains 
strength, arriving in wisconsin monday 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.



lsz162-262000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 am edt sun apr 26 2026 /301 am cdt sun apr 26 2026/

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

$$

fzus63 kmqt 260801
glfls 
expires:202604262000;;542646

open lake forecast for lake superior
national weather service marquette mi
401 am 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...

ridging resides over lake superior at 30.1 inches this morning as 
30.4 inch high pressure is over northern quebec. the pattern remains 
stable over lake superior today while a 29.4 inch colorado low 
develops. throughout monday, this low moves northeast and maintains 
strength, arriving in wisconsin monday 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.



lsz263-262000-
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 am edt sun apr 26 2026

.early this morning...east winds 5 to 15 knots. patchy fog. a
slight chance of rain showers. waves calm to 2 feet. 
.today...northeast winds 5 to 15 knots. patchy fog through early
afternoon. a chance of rain showers through early afternoon.
waves calm to 2 feet. 
.tonight...northeast winds 10 to 20 knots veering east after
midnight, then diminishing to 5 to 15 knots late. waves building
to 1 to 3 feet. 
.monday...east winds 15 to 25 knots increasing to 20 to 30 knots
late. a chance of rain showers through early afternoon, then rain
showers and a slight chance of thunderstorms by mid afternoon.
waves building to 6 to 9 feet occasionally to 11 feet. 
.monday night...east winds 20 to 30 knots backing northwest after
midnight. a slight chance of thunderstorms through midnight. rain
showers. waves building to 8 to 11 feet occasionally to 14 feet,
then subsiding to 5 to 8 feet occasionally to 10 feet. 
.tuesday...west winds 20 to 30 knots. a chance of rain showers.
waves subsiding to 4 to 8 feet occasionally to 10 feet. 
.tuesday night...northwest winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. waves subsiding to 1 to 3 feet. 
.wednesday...west winds 5 to 15 knots veering northwest. waves
subsiding to calm to 2 feet. 
.thursday...northwest winds 5 to 15 knots veering north. waves
calm to 2 feet. 

$$