fzus63 kmqt 250201
glfls 
expires:202605250800;;597327

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt sun may 24 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... 

high pressure off the coast of new england will push east tonight 
with weak troughing of 29.7 inches moving from the canadian prairies 
towards ontario. weak ridging of 29.9 to 30.0 over lake superior 
tonight will give way to weak 29.8 inch troughing on monday as the 
low crosses northern ontario at 29.6 inches. a 30.1 inch ridge forms 
monday over the lower great lakes. by tuesday night, a 30.2 inch 
high over the western shores of hudson bay will extend weak ridging 
over lake superior with 29.4 inch troughing forming in the lee of 
the northern us rockies. pressure rises to 30.3 inches over the lake 
through mid week as the high shifts southeast over northern ontario 
on wednesday while low pressure over the west weakens through 
thursday.



lsz162-250800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1000 pm edt sun may 24 2026 /900 pm cdt sun may 24 2026/

.rest of tonight...southeast winds 5 to 15 knots backing
northeast after midnight, then veering southwest late. patchy fog
by midnight. a slight chance of rain showers. waves calm to
2 feet. 
.monday...south winds 5 to 15 knots veering southwest in the
afternoon. a slight chance of showers and thunderstorms by mid
afternoon. waves calm to 2 feet. 
.monday night...southwest winds 5 to 15 knots veering west after
midnight. a slight chance of showers and thunderstorms through
midnight. waves calm to 2 feet. 
.tuesday...northwest winds 5 to 15 knots veering east by mid
afternoon. waves calm to 2 feet. 
.tuesday night...northeast winds 5 to 15 knots. a slight chance
of rain showers. waves calm to 2 feet. 
.wednesday...northeast winds 10 to 20 knots. waves building to
2 to 4 feet. 
.wednesday night...northeast winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. waves subsiding to calm to 2 feet. 
.thursday...northeast winds 5 to 15 knots backing north. waves
calm to 2 feet. 
.friday...east winds 5 to 15 knots backing northeast. waves calm
to 2 feet. 

$$

fzus63 kmqt 250201
glfls 
expires:202605250800;;597328

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt sun may 24 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... 

high pressure off the coast of new england will push east tonight 
with weak troughing of 29.7 inches moving from the canadian prairies 
towards ontario. weak ridging of 29.9 to 30.0 over lake superior 
tonight will give way to weak 29.8 inch troughing on monday as the 
low crosses northern ontario at 29.6 inches. a 30.1 inch ridge forms 
monday over the lower great lakes. by tuesday night, a 30.2 inch 
high over the western shores of hudson bay will extend weak ridging 
over lake superior with 29.4 inch troughing forming in the lee of 
the northern us rockies. pressure rises to 30.3 inches over the lake 
through mid week as the high shifts southeast over northern ontario 
on wednesday while low pressure over the west weakens through 
thursday.



lsz263-250800-
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 sun may 24 2026

.rest of tonight...south winds 5 to 15 knots veering southwest
late. patchy fog. a slight chance of rain showers. waves calm to
2 feet. 
.monday...southwest winds 5 to 15 knots. patchy dense fog through
early afternoon. waves calm to 2 feet. 
.monday night...southwest winds 5 to 15 knots veering west after
midnight. a chance of showers and a slight chance of
thunderstorms through midnight. waves building to 1 to 3 feet,
then subsiding to calm to 2 feet. 
.tuesday...northwest winds 5 to 15 knots becoming east less than
10 knots by mid afternoon. waves calm to 2 feet. 
.tuesday night...east winds 5 to 15 knots backing northeast after
midnight. waves calm to 2 feet. 
.wednesday...northeast winds 10 to 20 knots. waves building to
2 to 4 feet. 
.wednesday night...east winds 5 to 15 knots. waves subsiding to
calm to 2 feet. 
.thursday...east winds 5 to 15 knots becoming southwest less than
10 knots. waves calm to 2 feet. 
.friday...east winds 5 to 15 knots. waves calm to 2 feet. 

$$