fzus63 kmqt 262001
glfls 
expires:202605270800;;694788

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

tonight, 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 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 pressure increasing once again to 30.3 inches by saturday 
midday as the parent high over hudson bay propogates south. high 
pressure over lake superior remains until sunday evening and 
decreases to 30.1 inches sunday night as the parent high moves 
toward the lower great lakes.



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

.late this afternoon...northeast winds 5 to 15 knots. waves calm
to 2 feet. 
.tonight...northeast winds 5 to 15 knots. 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. 
.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...southwest winds 5 to 15 knots. waves building to 1 to
3 feet, then subsiding to calm to 2 feet. 
.friday night...northeast winds 5 to 15 knots increasing to 10 to
20 knots after midnight. waves building to 2 to 4 feet. 
.saturday...northeast winds 15 to 25 knots diminishing to 10 to
20 knots. waves building to 3 to 5 feet occasionally to 7 feet,
then subsiding to calm to 2 feet. 
.sunday...east winds 5 to 15 knots backing northeast. waves calm
to 2 feet. 

$$

fzus63 kmqt 262001
glfls 
expires:202605270800;;694789

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

tonight, 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 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 pressure increasing once again to 30.3 inches by saturday 
midday as the parent high over hudson bay propogates south. high 
pressure over lake superior remains until sunday evening and 
decreases to 30.1 inches sunday night as the parent high moves 
toward the lower great lakes.



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 tue may 26 2026

.late this afternoon...east winds 5 to 15 knots. waves calm to
2 feet. 
.tonight...east winds 5 to 15 knots backing northeast after
midnight. waves calm to 2 feet. 
.wednesday...northeast winds 10 to 20 knots veering east late.
waves building to 2 to 4 feet. 
.wednesday night...northeast winds 5 to 15 knots. waves subsiding
to calm to 2 feet. 
.thursday...northeast winds 5 to 15 knots. waves calm to 2 feet. 
.thursday night...south winds 5 to 15 knots veering southwest
after midnight. waves calm to 2 feet. 
.friday...southwest winds 10 to 20 knots. waves building to 1 to
3 feet. 
.friday night...east winds 5 to 15 knots increasing to 10 to
20 knots after midnight. waves subsiding to calm to 2 feet, then
building to 1 to 3 feet. 
.saturday...northeast winds 15 to 25 knots becoming east 10 to
20 knots. waves building to 2 to 4 feet, then subsiding to calm
to 2 feet. 
.sunday...northeast winds 5 to 15 knots. waves calm to 2 feet. 

$$