fzus63 kmqt 080801
glfls 
expires:202604082000;;019334

open lake forecast for lake superior
national weather service marquette mi
400 am edt wed apr 8 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 30.6 inch high over the eastern great lakes will move through new 
england today as a 29.7 inch low moves from southern saskatchewan to 
southwest ontario. the low will move north of lake superior 
overnight, reaching james bay by thursday afternoon as high pressure 
builds back into the upper great lakes thursday and friday. the high 
will build to 30.5 inches over the lower great lakes by saturday. on 
sunday, a 29.3 inch low pressure develops in the lee of the northern 
rockies while the 30.5 inch high pushes off of the eastern seaboard 
into the atlantic. this low will push east to the upper great lakes 
by sunday night and monday.



lsz162-082000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 am edt wed apr 8 2026 /300 am cdt wed apr 8 2026/

.early this morning...southeast winds 15 to 25 knots. a chance of
snow showers, possibly mixed with rain. waves 2 to 4 feet
building to 3 to 5 feet occasionally to 7 feet. 
.today...southeast winds 10 to 20 knots veering southwest late. a
chance of snow and rain showers through early afternoon, then
rain showers by mid afternoon. waves subsiding to 1 to 3 feet. 
.tonight...southwest winds 10 to 20 knots increasing to 15 to
25 knots after midnight, then becoming west 20 to 30 knots late.
a slight chance of rain showers through midnight. waves subsiding
to calm to 2 feet, then building to 4 to 7 feet occasionally to
9 feet. 
.thursday...west winds 15 to 25 knots diminishing to 5 to
15 knots. waves subsiding to calm to 2 feet. 
.thursday night...west winds 5 to 15 knots veering northwest
after midnight. waves 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 5 to 15 knots. waves calm to 2 feet. 
.saturday...east winds 5 to 15 knots increasing to 10 to
20 knots. rain showers. waves building to 3 to 5 feet
occasionally to 7 feet. 
.sunday...east winds 10 to 20 knots increasing to 15 to 25 knots.
rain showers. waves subsiding to 1 to 3 feet, then building to
5 to 8 feet occasionally to 10 feet. 

$$

fzus63 kmqt 080801
glfls 
expires:202604082000;;019335

open lake forecast for lake superior
national weather service marquette mi
400 am edt wed apr 8 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 30.6 inch high over the eastern great lakes will move through new 
england today as a 29.7 inch low moves from southern saskatchewan to 
southwest ontario. the low will move north of lake superior 
overnight, reaching james bay by thursday afternoon as high pressure 
builds back into the upper great lakes thursday and friday. the high 
will build to 30.5 inches over the lower great lakes by saturday. on 
sunday, a 29.3 inch low pressure develops in the lee of the northern 
rockies while the 30.5 inch high pushes off of the eastern seaboard 
into the atlantic. this low will push east to the upper great lakes 
by sunday night and monday.



lsz263-082000-
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 wed apr 8 2026

.early this morning...southeast winds 15 to 25 knots. a chance of
snow showers, possibly mixed with rain. waves 2 to 4 feet
building to 3 to 5 feet occasionally to 7 feet. 
.today...southeast winds 15 to 25 knots veering south late. snow
showers likely, possibly mixed with rain showers through early
afternoon, then rain showers by mid afternoon. waves 3 to 5 feet
occasionally to 7 feet. 
.tonight...southwest winds 10 to 20 knots increasing to 20 to
30 knots after midnight, then veering west late. a chance of rain
showers through midnight. waves subsiding to 2 to 4 feet, then
building to 6 to 9 feet occasionally to 11 feet. 
.thursday...west winds 20 to 30 knots diminishing to 10 to
20 knots. waves subsiding to 2 to 4 feet. 
.thursday night...west winds 5 to 15 knots diminishing to less
than 10 knots after midnight. 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 5 to 15 knots becoming southwest less
than 10 knots after midnight. waves calm to 2 feet. 
.saturday...south winds 5 to 15 knots becoming southeast 15 to
25 knots. rain showers likely. waves building to 3 to 5 feet
occasionally to 7 feet. 
.sunday...southeast winds 15 to 25 knots veering south. rain
showers. waves subsiding to 2 to 4 feet, then building to 6 to
9 feet occasionally to 11 feet. 

$$