fzus63 kmqt 040300
glfls 
expires:202603040900;;585080

open lake forecast for lake superior
national weather service marquette mi
1000 pm est tue mar 3 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 30.1 inch trough remains over the lake tonight, ahead of weak 30.2 
inch ridging into early wednesday. a 30.6 inch high will move from 
northern manitoba wednesday to quebec thursday morning, building to 
30.7 inches late. the strong high will help keep a 29.9 inch low 
moving up from the southern plains to the south of the lower great 
lakes wednesday night, weakening to 30.1 inches by thursday night. 
friday, a low pressure ejects out of the plains, reaching lake 
superior saturday morning at least at 29.7 inches. behind the low, a 
29.9 inch ridge builds over the lake on saturday night before a 29.1 
inch low moves through northern ontario on sunday.



lsz162-040900-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1000 pm est tue mar 3 2026 /900 pm cst tue mar 3 2026/

.rest of tonight...west winds 5 to 15 knots backing southwest by
midnight. waves calm to 2 feet. 
.wednesday...southwest winds 5 to 15 knots increasing to 10 to
20 knots by mid afternoon. waves calm to 2 feet. 
.wednesday night...south winds 10 to 20 knots backing northeast
by midnight, then increasing to 15 to 25 knots late. waves calm
to 2 feet. 
.thursday...northeast winds 15 to 25 knots. waves calm to 2 feet.
.thursday night...east winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. a slight chance of rain showers after
midnight. waves calm to 2 feet. 
.friday...east winds 5 to 15 knots increasing to 10 to 20 knots
in the afternoon. a chance of rain showers in the morning, then
rain showers likely in the afternoon. waves calm to 2 feet. 
.friday night...northeast winds 10 to 20 knots backing north
after midnight. a chance of rain showers. a chance of snow
showers after midnight. waves calm to 2 feet. 
.saturday...west winds 15 to 25 knots becoming southwest 20 to
30 knots. waves calm to 2 feet. 
.sunday...southwest winds 15 to 25 knots veering west. waves calm
to 2 feet. 

$$

fzus63 kmqt 040300
glfls 
expires:202603040900;;585081

open lake forecast for lake superior
national weather service marquette mi
1000 pm est tue mar 3 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 30.1 inch trough remains over the lake tonight, ahead of weak 30.2 
inch ridging into early wednesday. a 30.6 inch high will move from 
northern manitoba wednesday to quebec thursday morning, building to 
30.7 inches late. the strong high will help keep a 29.9 inch low 
moving up from the southern plains to the south of the lower great 
lakes wednesday night, weakening to 30.1 inches by thursday night. 
friday, a low pressure ejects out of the plains, reaching lake 
superior saturday morning at least at 29.7 inches. behind the low, a 
29.9 inch ridge builds over the lake on saturday night before a 29.1 
inch low moves through northern ontario on sunday.



lsz263-040900-
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 est tue mar 3 2026

.rest of tonight...northeast winds 5 to 15 knots becoming
southwest less than 10 knots by midnight. waves calm to 2 feet. 
.wednesday...south winds 15 to 25 knots becoming southwest 10 to
20 knots by late morning, then diminishing to 5 to 15 knots by
mid afternoon. patchy fog in the morning. waves calm to 2 feet. 
.wednesday night...northeast winds 15 to 25 knots. waves building
to 3 to 6 feet occasionally to 8 feet. 
.thursday...northeast winds 15 to 25 knots. waves subsiding to
3 to 5 feet occasionally to 7 feet. 
.thursday night...east winds 15 to 25 knots becoming southeast
5 to 15 knots after midnight. waves subsiding to 2 to 4 feet. 
.friday...southeast winds 5 to 15 knots backing east in the
afternoon. rain showers likely in the afternoon. waves subsiding
to 1 to 3 feet. 
.friday night...east winds 5 to 15 knots becoming north 10 to
20 knots after midnight. a chance of rain showers. a chance of
snow showers after midnight. waves building to 2 to 4 feet. 
.saturday...west winds 15 to 25 knots becoming southwest 20 to
30 knots. waves subsiding to calm to 2 feet, then building to
2 to 4 feet. 
.sunday...southwest winds 20 to 30 knots becoming west 15 to
25 knots. waves subsiding to calm to 2 feet. 

$$