fzus63 kmqt 072001
glfls 
expires:202604080800;;994006

open lake forecast for lake superior
national weather service marquette mi
400 pm edt tue apr 7 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 strong 30.6 inch high pressure continues through the lower great 
lakes the rest of this afternoon, reaching new england by wednesday 
afternoon. meanwhile, a 29.5 inch low continues to organize along 
the montana/saskatchewan border, moving just north of the dakotas 
tonight before moving north of lake superior wednesday night. high 
pressure builds into the upper great lakes thursday and friday, 
eventually building 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.



lsz162-080800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 pm edt tue apr 7 2026 /300 pm cdt tue apr 7 2026/

.late this afternoon...southwest winds 5 to 15 knots. waves 1 to
3 feet subsiding to calm to 2 feet. 
.tonight...southeast winds 10 to 20 knots becoming south 15 to
25 knots after midnight. a chance of snow showers, possibly mixed
with rain after midnight. waves building to 3 to 5 feet
occasionally to 7 feet. 
.wednesday...southeast winds 15 to 25 knots diminishing to 10 to
20 knots in the afternoon, then veering southwest late. a chance
of rain showers, possibly mixed with snow through early
afternoon, then rain showers by mid afternoon. waves subsiding to
1 to 3 feet. 
.wednesday night...southwest winds 10 to 20 knots becoming west
15 to 25 knots after midnight, then increasing to 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 10 to
20 knots by mid afternoon. 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...southwest winds 5 to 15 knots veering west after
midnight. waves calm to 2 feet. 
.saturday...east winds 5 to 15 knots becoming southeast 10 to
20 knots. rain showers. waves building to 2 to 4 feet. 
.sunday...east winds 10 to 20 knots becoming south 15 to
25 knots. rain showers. waves subsiding to 1 to 3 feet, then
building to 7 to 10 feet occasionally to 13 feet. 

$$

fzus63 kmqt 072001
glfls 
expires:202604080800;;994007

open lake forecast for lake superior
national weather service marquette mi
400 pm edt tue apr 7 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 strong 30.6 inch high pressure continues through the lower great 
lakes the rest of this afternoon, reaching new england by wednesday 
afternoon. meanwhile, a 29.5 inch low continues to organize along 
the montana/saskatchewan border, moving just north of the dakotas 
tonight before moving north of lake superior wednesday night. high 
pressure builds into the upper great lakes thursday and friday, 
eventually building 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.



lsz263-080800-
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 tue apr 7 2026

.late this afternoon...southwest winds 10 to 20 knots. waves 2 to
4 feet subsiding to 1 to 3 feet. 
.tonight...southeast winds 5 to 15 knots becoming south 10 to
20 knots after midnight, then increasing to 15 to 25 knots late.
a chance of snow showers after midnight. waves subsiding to calm
to 2 feet, then building to 3 to 5 feet occasionally to 7 feet. 
.wednesday...south winds 15 to 25 knots backing southeast in the
afternoon, then becoming south 10 to 20 knots 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. 
.wednesday night...southwest winds 10 to 20 knots increasing to
20 to 30 knots after midnight, then veering west late. a slight
chance of rain showers with pockets of snow 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 15 to
25 knots by mid afternoon. waves 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...southwest winds 5 to 15 knots. waves calm to
2 feet. 
.saturday...south winds 5 to 15 knots becoming southeast 15 to
25 knots. a chance of rain showers. waves building to 3 to 5 feet
occasionally to 7 feet. 
.sunday...south winds 15 to 25 knots increasing to 20 to
30 knots. rain showers. waves subsiding to 2 to 4 feet, then
building to 7 to 10 feet occasionally to 13 feet. 

$$