fzus63 kmqt 280201
glfls 
expires:202605280800;;763247

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt wed may 27 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 of 30.2 inches over lake superior tonight builds to 30.3 
inches on thursday as high pressure shifts southward from hudson 
bay. pressure falls to around 30.0 inches over the lake on friday as 
the high weakens to 30.1 inches over lower michigan. a second high 
pushing in from hudson bay brings 30.3 inch ridging back over the 
lake on saturday, briefly weakening to 30.0 to 30.1 inches again on 
sunday. high pressure persists over lake superior through early next 
week.



lsz162-280800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1000 pm edt wed may 27 2026 /900 pm cdt wed may 27 2026/

.rest of tonight...northeast winds 5 to 15 knots. waves calm to
2 feet. 
.thursday...east winds 5 to 15 knots backing northeast in the
afternoon. waves calm to 2 feet. 
.thursday night...north winds less than 10 knots increasing to
5 to 15 knots after midnight, then backing southwest late. waves
calm to 2 feet. 
.friday...southwest winds 5 to 15 knots. a slight chance of
showers and thunderstorms by mid afternoon. waves calm to 2 feet.
.friday night...east winds 5 to 15 knots becoming northeast 15 to
25 knots after midnight. a slight chance of rain showers through
midnight. waves building to 2 to 4 feet. 
.saturday...northeast winds 15 to 25 knots. waves building to
3 to 5 feet occasionally to 7 feet. 
.saturday night...northeast winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. waves subsiding to calm to 2 feet. 
.sunday...northeast winds 5 to 15 knots. waves calm to 2 feet. 
.monday...northeast winds 10 to 20 knots diminishing to 5 to
15 knots. waves building to 1 to 3 feet, then subsiding to calm
to 2 feet. 

$$

fzus63 kmqt 280201
glfls 
expires:202605280800;;763248

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt wed may 27 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 of 30.2 inches over lake superior tonight builds to 30.3 
inches on thursday as high pressure shifts southward from hudson 
bay. pressure falls to around 30.0 inches over the lake on friday as 
the high weakens to 30.1 inches over lower michigan. a second high 
pushing in from hudson bay brings 30.3 inch ridging back over the 
lake on saturday, briefly weakening to 30.0 to 30.1 inches again on 
sunday. high pressure persists over lake superior through early next 
week.



lsz263-280800-
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 wed may 27 2026

.rest of tonight...east winds 5 to 15 knots backing northeast
after midnight, then diminishing to less than 10 knots late.
waves calm to 2 feet. 
.thursday...east winds less than 10 knots becoming northeast 5 to
15 knots in the afternoon. waves calm to 2 feet. 
.thursday night...northeast winds less than 10 knots becoming
southwest 5 to 15 knots after midnight. waves calm to 2 feet. 
.friday...southwest winds 5 to 15 knots. a slight chance of
showers and thunderstorms by mid afternoon. waves building to
1 to 3 feet, then subsiding to calm to 2 feet. 
.friday night...east winds 5 to 15 knots increasing to 10 to
20 knots after midnight. a slight chance of rain showers through
midnight. waves building to 2 to 4 feet. 
.saturday...east winds 10 to 20 knots backing northeast by mid
afternoon. waves building to 3 to 5 feet occasionally to 7 feet,
then subsiding to 2 to 4 feet. 
.saturday night...east winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. waves subsiding to calm to 2 feet. 
.sunday...northeast winds 5 to 15 knots. waves calm to 2 feet. 
.monday...northeast winds 5 to 15 knots. waves building to 1 to
3 feet, then subsiding to calm to 2 feet. 

$$