fzus63 kmqt 290201
glfls 
expires:202610290800;;886675

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt wed oct 28 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, a 29.8 inch low over northwest ontario will cross northern 
ontario, deepening to 29.6 inches thursday morning. this low will 
deepen further to 29.5 inches thursday afternoon over quebec as 30.2 
inch ridging fills over the northern plains. as the low departs to 
the northeast by friday morning, high pressure over elongates from 
lake michigan to the canadian rockies at between 30.3 and 30.4 
inches. friday night into saturday, the high settles over the great 
lakes at 30.4 inches. the high builds to 30.5 inches over new 
england saturday night, weakening through sunday, reaching 30.3 
inches monday morning. meanwhile, a 29.5 inch colorado low develops, 
which will approach the upper great lakes early next week.




lsz162-290800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1000 pm edt wed oct 28 2026 /900 pm cdt wed oct 28 2026/

.rest of tonight...northwest winds 5 to 15 knots becoming west
10 to 20 knots after midnight, then increasing to 20 to 30 knots
late. a chance of showers by midnight. waves calm to 2 feet
building to 3 to 5 feet occasionally to 7 feet. 
.thursday...west winds 20 to 30 knots diminishing to 15 to
25 knots late. waves building to 3 to 6 feet occasionally to
8 feet. 
.thursday night...northwest winds 10 to 20 knots diminishing to
5 to 15 knots after midnight, then backing west late. waves
subsiding to calm to 2 feet. 
.friday...west winds 5 to 15 knots backing southwest by mid
afternoon. waves calm to 2 feet. 
.friday night...west winds less than 10 knots backing east after
midnight. waves calm to 2 feet. 
.saturday...east winds less than 10 knots increasing to 5 to
15 knots by mid afternoon. waves calm to 2 feet. 
.saturday night...east winds 5 to 15 knots becoming south less
than 10 knots after midnight. waves calm to 2 feet. 
.sunday...southwest winds less than 10 knots backing east. waves
calm to 2 feet. 
.monday...east winds 10 to 20 knots. a chance of showers. waves
building to 1 to 3 feet. 

$$

fzus63 kmqt 290201
glfls 
expires:202610290800;;886676

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt wed oct 28 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, a 29.8 inch low over northwest ontario will cross northern 
ontario, deepening to 29.6 inches thursday morning. this low will 
deepen further to 29.5 inches thursday afternoon over quebec as 30.2 
inch ridging fills over the northern plains. as the low departs to 
the northeast by friday morning, high pressure over elongates from 
lake michigan to the canadian rockies at between 30.3 and 30.4 
inches. friday night into saturday, the high settles over the great 
lakes at 30.4 inches. the high builds to 30.5 inches over new 
england saturday night, weakening through sunday, reaching 30.3 
inches monday morning. meanwhile, a 29.5 inch colorado low develops, 
which will approach the upper great lakes early next week.




lsz263-290800-
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 oct 28 2026

.rest of tonight...south winds 10 to 20 knots becoming west 15 to
25 knots after midnight. a chance of showers and a slight chance
of thunderstorms by midnight. waves calm to 2 feet building to
3 to 6 feet occasionally to 8 feet. 
.thursday...west winds 20 to 30 knots. waves building to 4 to
8 feet occasionally to 10 feet. 
.thursday night...northwest winds 15 to 25 knots diminishing to
5 to 15 knots. waves subsiding to 1 to 3 feet. 
.friday...west winds 5 to 15 knots. waves subsiding to calm to
2 feet. 
.friday night...west winds 5 to 15 knots becoming south less than
10 knots after midnight. waves calm to 2 feet. 
.saturday...south winds less than 10 knots. waves calm to 2 feet.
.saturday night...south winds less than 10 knots. waves calm to
2 feet. 
.sunday...southwest winds less than 10 knots backing south. waves
calm to 2 feet. 
.monday...east winds 5 to 15 knots veering southeast. a chance of
showers. waves building to 1 to 3 feet. 

$$