fzus63 kmqt 282001
glfls 
expires:202610290800;;873669

open lake forecast for lake superior
national weather service marquette mi
400 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...

this evening, lake superior is between a 29.8 inch low along the 
ontario/manitoba line and a 30.4 inch high over cape cod. throughout 
the overnight into thursday morning, the low will cross northern 
ontario, deepening to 29.6 inches. 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-
400 pm edt wed oct 28 2026 /300 pm cdt wed oct 28 2026/

.late this afternoon...east winds 5 to 15 knots. showers likely
and a slight chance of thunderstorms. waves calm to 2 feet. 
.tonight...east winds 5 to 15 knots becoming west 10 to 20 knots
after midnight, then increasing to 20 to 30 knots late. showers
and a slight chance of thunderstorms through midnight. waves
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 282001
glfls 
expires:202610290800;;873670

open lake forecast for lake superior
national weather service marquette mi
400 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...

this evening, lake superior is between a 29.8 inch low along the 
ontario/manitoba line and a 30.4 inch high over cape cod. throughout 
the overnight into thursday morning, the low will cross northern 
ontario, deepening to 29.6 inches. 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-
400 pm edt wed oct 28 2026

.late this afternoon...east winds 5 to 15 knots. a chance of
showers and a slight chance of thunderstorms. waves calm to
2 feet. 
.tonight...south winds 10 to 20 knots becoming west 15 to
25 knots after midnight. showers and a slight chance of
thunderstorms through midnight. waves 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. 

$$