fzus63 kmqt 081404 cca
glfls 
expires:202604082000;;032071

open lake forecast for lake superior...corrected
national weather service marquette mi
1004 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 new england this morning moves into the 
atlantic later today as a 29.6 inch low moves through southern 
manitoba towards thunder bay. the low moves north of lake superior 
tonight, reaching james bay by thursday afternoon as high pressure 
builds back into the upper great lakes thursday and friday. the high 
builds 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 pushes east through the upper great 
lakes sunday night before lifting into northern quebec by monday.



lsz162-082000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1004 am edt wed apr 8 2026 /904 am cdt wed apr 8 2026/

.rest of today...southeast winds 10 to 20 knots veering southwest
late. a chance of rain showers, possibly mixed with snow by late
morning, then rain showers by mid afternoon. waves 2 to 4 feet
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 3 to 6 feet occasionally to
8 feet. 
.thursday...west winds 15 to 25 knots diminishing to 5 to
15 knots. waves subsiding to 1 to 3 feet. 
.thursday night...west winds 5 to 15 knots veering northwest
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. waves calm to 2 feet. 
.saturday...east winds 5 to 15 knots increasing to 10 to
20 knots. rain showers. waves building to 2 to 4 feet. 
.sunday...east winds 10 to 20 knots increasing to 15 to 25 knots.
rain showers. waves building to 3 to 5 feet occasionally to
7 feet, then subsiding to 1 to 3 feet. 

$$

fzus63 kmqt 081404 cca
glfls 
expires:202604082000;;032072

open lake forecast for lake superior...corrected
national weather service marquette mi
1004 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 new england this morning moves into the 
atlantic later today as a 29.6 inch low moves through southern 
manitoba towards thunder bay. the low moves north of lake superior 
tonight, reaching james bay by thursday afternoon as high pressure 
builds back into the upper great lakes thursday and friday. the high 
builds 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 pushes east through the upper great 
lakes sunday night before lifting into northern quebec by 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-
1004 am edt wed apr 8 2026

.rest of today...southeast winds 15 to 25 knots veering south
late. a chance of snow and rain showers by late morning, 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 5 to 8 feet occasionally to 10 feet. 
.thursday...west winds 20 to 30 knots diminishing to 10 to
20 knots. waves building to 6 to 9 feet occasionally to 11 feet,
then subsiding to 3 to 5 feet occasionally to 7 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 4 to
7 feet occasionally to 9 feet. 

$$