fzus63 kmqt 270200
glfls 
expires:202610270800;;775971

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt mon oct 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...

a 30.5 inch high pressure centered over northern ontario tonight 
continues eastward, reaching the saint lawrence seaway on tuesday. 
this keeps ridging of at least 30.4 inches over lake superior 
through tuesday afternoon. a 29.8 inch colorado low lifts through 
the plains on wednesday, eventually moving through lake superior 
wednesday night into early thursday morning. high pressure of 30.2 
to 30.3 inches returns to the upper great lakes by friday. the 
high's center builds to 30.4 inches over the lower great lakes by 
early saturday, with ridging of at least 30.2 inches remaining over 
lake superior until saturday night.




lsz162-270800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1000 pm edt mon oct 26 2026 /900 pm cdt mon oct 26 2026/

.rest of tonight...east winds 10 to 20 knots. a chance of rain
showers after midnight. waves calm to 2 feet building to 1 to
3 feet. 
.tuesday...east winds 15 to 25 knots. rain showers. waves
building to 3 to 5 feet occasionally to 7 feet, then subsiding to
2 to 4 feet. 
.tuesday night...southeast winds 10 to 20 knots becoming south
5 to 15 knots after midnight, then veering southwest late. a
chance of showers through midnight. waves subsiding to calm to
2 feet. 
.wednesday...southwest winds 5 to 15 knots. a chance of showers
by mid afternoon. waves calm to 2 feet. 
.wednesday night...south winds 5 to 15 knots becoming west 10 to
20 knots after midnight. showers and a slight chance of
thunderstorms through midnight, then a slight chance of showers
after midnight. waves calm to 2 feet. 
.thursday...west winds 10 to 20 knots. waves calm to 2 feet. 
.thursday night...west winds 5 to 15 knots. waves calm to 2 feet.
.friday...west winds 5 to 15 knots veering northeast. waves calm
to 2 feet. 
.saturday...east winds 10 to 20 knots diminishing to 5 to
15 knots. a chance of showers. waves calm to 2 feet. 

$$

fzus63 kmqt 270200
glfls 
expires:202610270800;;775972

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt mon oct 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...

a 30.5 inch high pressure centered over northern ontario tonight 
continues eastward, reaching the saint lawrence seaway on tuesday. 
this keeps ridging of at least 30.4 inches over lake superior 
through tuesday afternoon. a 29.8 inch colorado low lifts through 
the plains on wednesday, eventually moving through lake superior 
wednesday night into early thursday morning. high pressure of 30.2 
to 30.3 inches returns to the upper great lakes by friday. the 
high's center builds to 30.4 inches over the lower great lakes by 
early saturday, with ridging of at least 30.2 inches remaining over 
lake superior until saturday night.




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-
1000 pm edt mon oct 26 2026

.rest of tonight...east winds 5 to 15 knots. a slight chance of
rain showers after midnight. waves calm to 2 feet. 
.tuesday...southeast winds 10 to 20 knots increasing to 15 to
25 knots late. a chance of rain showers through early afternoon,
then rain showers likely by mid afternoon. waves building to 2 to
4 feet. 
.tuesday night...southeast winds 10 to 20 knots veering south
after midnight, then becoming southwest 5 to 15 knots late. a
slight chance of showers through midnight. waves building to 3 to
5 feet occasionally to 7 feet, then subsiding to 1 to 3 feet. 
.wednesday...southwest winds 10 to 20 knots. a slight chance of
showers by mid afternoon. waves subsiding to calm to 2 feet. 
.wednesday night...south winds 10 to 20 knots veering west after
midnight. showers and a slight chance of thunderstorms through
midnight, then a chance of showers after midnight. waves building
to 1 to 3 feet. 
.thursday...west winds 10 to 20 knots. waves building to 2 to
4 feet. 
.thursday night...west winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. waves subsiding to calm to 2 feet. 
.friday...west winds 5 to 15 knots backing east. waves calm to
2 feet. 
.saturday...east winds 5 to 15 knots veering south. a chance of
rain showers. waves calm to 2 feet. 

$$