fzus63 kmqt 261401
glfls 
expires:202605262000;;679890

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

lake superior will remain under the influence of 29.8 inch troughing 
until tonight, when weak ridging of 30.1 inches builds in over lake 
superior thanks to a 30.4 inch high over the western shores of 
hudson bay. this parent high then shifts southward over lake 
superior on thursday, causing pressure to increase to 30.3 inches. 
on friday, the high weakens to around 30.1 inches as it continues 
its southerly propagation. following this, a second ridge pushing in 
from hudson bay brings 30.1 inch ridging back over lake superior 
late on friday, with the ridging increasing once again to 30.3 
inches by saturday midday as the parent high over hudson bay pushes 
south. by sunday morning, this ridging decreases to 30.1 inches as 
the parent high moves toward the lower great lakes.



lsz162-262000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1001 am edt tue may 26 2026 /901 am cdt tue may 26 2026/

.rest of today...east winds 5 to 15 knots backing northeast late.
waves calm to 2 feet. 
.tonight...northeast winds 5 to 15 knots diminishing to less than
10 knots after midnight, then increasing to 5 to 15 knots late.
waves calm to 2 feet. 
.wednesday...northeast winds 10 to 20 knots veering east in the
afternoon, then backing northeast late. waves building to 2 to
4 feet, then subsiding to 1 to 3 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. waves calm to 2 feet. 
.thursday night...north winds 5 to 15 knots backing west after
midnight. waves calm to 2 feet. 
.friday...east winds 5 to 15 knots becoming northeast 10 to
20 knots. waves building to 1 to 3 feet, then subsiding to calm
to 2 feet. 
.saturday...northeast winds 10 to 20 knots. waves building to
2 to 4 feet, then subsiding to calm to 2 feet. 

$$

fzus63 kmqt 261401
glfls 
expires:202605262000;;679891

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

lake superior will remain under the influence of 29.8 inch troughing 
until tonight, when weak ridging of 30.1 inches builds in over lake 
superior thanks to a 30.4 inch high over the western shores of 
hudson bay. this parent high then shifts southward over lake 
superior on thursday, causing pressure to increase to 30.3 inches. 
on friday, the high weakens to around 30.1 inches as it continues 
its southerly propagation. following this, a second ridge pushing in 
from hudson bay brings 30.1 inch ridging back over lake superior 
late on friday, with the ridging increasing once again to 30.3 
inches by saturday midday as the parent high over hudson bay pushes 
south. by sunday morning, this ridging decreases to 30.1 inches as 
the parent high moves toward the lower great lakes.



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-
1001 am edt tue may 26 2026

.rest of today...northeast winds less than 10 knots increasing to
5 to 15 knots in the afternoon. waves calm to 2 feet. 
.tonight...east winds less than 10 knots backing northeast after
midnight, then increasing to 5 to 15 knots late. waves calm to
2 feet. 
.wednesday...northeast winds 10 to 20 knots veering east late.
waves building to 2 to 4 feet, then subsiding to 1 to 3 feet. 
.wednesday night...northeast winds 5 to 15 knots diminishing to
less than 10 knots after midnight. waves subsiding to calm to
2 feet. 
.thursday...northeast winds 5 to 15 knots. waves calm to 2 feet. 
.thursday night...southwest winds 5 to 15 knots veering west
after midnight. waves calm to 2 feet. 
.friday...west winds 5 to 15 knots backing east. waves building
to 1 to 3 feet, then subsiding to calm to 2 feet. 
.saturday...northeast winds 10 to 20 knots. waves building to
2 to 4 feet, then subsiding to calm to 2 feet. 

$$