fzus63 kmqt 310801
glfls 
expires:202610312000;;012155

open lake forecast for lake superior
national weather service marquette mi
400 am 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 lower great lakes this morning 
will keep ridging of 30.2 inches over lake superior through sunday 
as it exits east over the eastern seaboard. a 29.4 inch colorado low 
over the plains on monday then lifts 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.




lsz162-312000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 am edt sat oct 31 2026 /300 am cdt sat oct 31 2026/

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

$$

fzus63 kmqt 310801
glfls 
expires:202610312000;;012156

open lake forecast for lake superior
national weather service marquette mi
400 am 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 lower great lakes this morning 
will keep ridging of 30.2 inches over lake superior through sunday 
as it exits east over the eastern seaboard. a 29.4 inch colorado low 
over the plains on monday then lifts 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.




lsz263-312000-
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 am edt sat oct 31 2026

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

$$