fzus63 kmqt 100202
glfls 
expires:202605100800;;301857

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt sat may 9 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... 

heights are rising over the lake this evening as 29.4 inch low 
pressure moves eastward into southern quebec and 30.2 inch high 
pressure over the canadian prairie expands eastward. the high shifts 
southeast into the western great lakes at 30.3 inches sunday night 
into monday. ridging from the high persists at around 30.2 inches 
over lake superior through monday evening. the ridging is eventually 
replaced by a 29.7 inch clipper descending over western lake 
superior on tuesday as the previous high pressure weakens and shifts 
to the east coast. as the clipper continues towards the eastern 
great lakes tuesday night into wednesday, 30.1 inch high pressure 
ridging moves over lake superior. this high pressure is pressed 
southeast to the lower great lakes on thursday while a 29.4 inch low 
emanates off the northern rockies.



lsz162-100800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1001 pm edt sat may 9 2026 /901 pm cdt sat may 9 2026/

.rest of tonight...northwest winds 10 to 20 knots. waves calm to
2 feet. 
.sunday...northwest winds 10 to 20 knots diminishing to 5 to
15 knots in the afternoon, then backing west late. waves calm to
2 feet. 
.sunday night...west winds 5 to 15 knots veering north after
midnight, then diminishing to less than 10 knots late. waves calm
to 2 feet. 
.monday...southeast winds less than 10 knots increasing to 5 to
15 knots by mid afternoon. waves calm to 2 feet. 
.monday night...east winds 5 to 15 knots increasing to 10 to
20 knots after midnight. a chance of rain showers after midnight.
waves building to 1 to 3 feet. 
.tuesday...southeast winds 10 to 20 knots backing north by mid
afternoon. rain showers. waves 1 to 3 feet. 
.tuesday night...north winds 15 to 25 knots diminishing to 10 to
20 knots after midnight. waves 1 to 3 feet. 
.wednesday...west winds 10 to 20 knots becoming southwest 5 to
15 knots. waves subsiding to calm to 2 feet. 
.thursday...east winds 5 to 15 knots becoming south 10 to
20 knots. a chance of rain showers. waves building to 2 to
4 feet. 

$$

fzus63 kmqt 100202
glfls 
expires:202605100800;;301858

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt sat may 9 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... 

heights are rising over the lake this evening as 29.4 inch low 
pressure moves eastward into southern quebec and 30.2 inch high 
pressure over the canadian prairie expands eastward. the high shifts 
southeast into the western great lakes at 30.3 inches sunday night 
into monday. ridging from the high persists at around 30.2 inches 
over lake superior through monday evening. the ridging is eventually 
replaced by a 29.7 inch clipper descending over western lake 
superior on tuesday as the previous high pressure weakens and shifts 
to the east coast. as the clipper continues towards the eastern 
great lakes tuesday night into wednesday, 30.1 inch high pressure 
ridging moves over lake superior. this high pressure is pressed 
southeast to the lower great lakes on thursday while a 29.4 inch low 
emanates off the northern rockies.



lsz263-100800-
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 pm edt sat may 9 2026

.rest of tonight...northwest winds 5 to 15 knots. waves 1 to
3 feet. 
.sunday...northwest winds 5 to 15 knots backing west in the
afternoon. waves subsiding to calm to 2 feet. 
.sunday night...west winds 5 to 15 knots veering north after
midnight, then diminishing to less than 10 knots late. waves calm
to 2 feet. 
.monday...south winds 5 to 15 knots. waves calm to 2 feet. 
.monday night...southeast winds 5 to 15 knots. a chance of rain
showers after midnight. waves building to 1 to 3 feet. 
.tuesday...southeast winds 10 to 20 knots. rain showers. waves
building to 3 to 5 feet occasionally to 7 feet. 
.tuesday night...north winds 10 to 20 knots. waves subsiding to
2 to 4 feet. 
.wednesday...northwest winds 10 to 20 knots becoming west 5 to
15 knots. waves subsiding to calm to 2 feet. 
.thursday...south winds 5 to 15 knots increasing to 10 to
20 knots. a chance of rain showers. waves building to 2 to
4 feet. 

$$