fzus63 kmqt 312001
glfls 
expires:202611010800;;039807

open lake forecast for lake superior
national weather service marquette mi
400 pm edt sat oct 31 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 over the eastern great lakes will continue 
to slowly move southeast, reaching the eastern seaboard sunday 
night. this will continue to extend a 30.2 inch ridge over lake 
superior through sunday. thereafter a 29.4 inch low will move from 
colorado to the plains on monday, then lift into minnesota monday 
evening, eventually passing over western lake superior at 29.7 
inches on tuesday. this low then passes north towards james bay 
tuesday night. in its wake, high pressure ridging of 30.0 inches 
builds back over lake superior by late wednesday through friday.




lsz162-010800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 pm edt sat oct 31 2026 /300 pm cdt sat oct 31 2026/

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

$$

fzus63 kmqt 312001
glfls 
expires:202611010800;;039808

open lake forecast for lake superior
national weather service marquette mi
400 pm edt sat oct 31 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 over the eastern great lakes will continue 
to slowly move southeast, reaching the eastern seaboard sunday 
night. this will continue to extend a 30.2 inch ridge over lake 
superior through sunday. thereafter a 29.4 inch low will move from 
colorado to the plains on monday, then lift into minnesota monday 
evening, eventually passing over western lake superior at 29.7 
inches on tuesday. this low then passes north towards james bay 
tuesday night. in its wake, high pressure ridging of 30.0 inches 
builds back over lake superior by late wednesday through friday.




lsz263-010800-
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 sat oct 31 2026

.late this afternoon...east winds less than 10 knots. a slight
chance of showers. waves calm to 2 feet. 
.tonight...southeast winds less than 10 knots becoming south 5 to
15 knots after midnight. a slight chance of showers. waves calm
to 2 feet. 
.sunday...southwest winds 5 to 15 knots. a slight chance of
showers through early afternoon. waves calm to 2 feet. 
.sunday night...south winds 5 to 15 knots. waves calm to 2 feet. 
.monday...southeast winds 5 to 15 knots. showers likely by mid
afternoon. waves calm to 2 feet. 
.monday night...southeast winds 5 to 15 knots increasing to 10 to
20 knots after midnight. showers. waves building to 2 to 4 feet. 
.tuesday...southeast winds 10 to 20 knots veering southwest by
mid afternoon. showers. waves 2 to 4 feet. 
.tuesday night...southwest winds 10 to 20 knots increasing to
15 to 25 knots after midnight. showers likely. waves building to
3 to 5 feet occasionally to 7 feet. 
.wednesday...west winds 10 to 20 knots veering north. a chance of
rain showers. waves subsiding to 1 to 3 feet, then building to
2 to 4 feet. 
.thursday...north winds 10 to 20 knots veering northeast. waves
subsiding to 1 to 3 feet. 

$$