fzus63 kmqt 290201
glfls 
expires:202606290800;;081061

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt sun jun 28 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 29.4 low will track north, and then northwest, from the central 
plains to southern saskatchewan through monday night, deepening to 
29.2 inches. meanwhile a 30.1 inch high over the hudson bay will 
weaken and shift southeast to the east of lake erie as the 
saskatchewan low regresses southwest at 29.5 inches to montana while 
another low at 29.4 inches moves from colorado to the northern 
plains. the 2nd low moves to southern manitoba monday night to 
tuesday morning as high pressure shifts off the east coast, still at 
30.1 inches. tuesday, the low shifts north to lake winnipeg and 
deepens to 29.2 inches. the low then weakens to 29.4 inches as it 
crosses northern ontario by midday wednesday. as the low shifts east 
through thursday, weak high pressure around 30.0 inches expands over 
much of the eastern conus into the weekend.




lsz162-290800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1000 pm edt sun jun 28 2026 /900 pm cdt sun jun 28 2026/

.rest of tonight...northeast winds 10 to 20 knots. a chance of
showers and thunderstorms. waves 2 to 4 feet subsiding to 1 to
3 feet. 
.monday...northeast winds 10 to 20 knots increasing to 15 to
25 knots late. a chance of showers and a slight chance of
thunderstorms. waves building to 2 to 4 feet. 
.monday night...northeast winds 15 to 25 knots diminishing to
10 to 20 knots after midnight, then becoming west 5 to 15 knots
late. a chance of showers and thunderstorms. waves building to
3 to 5 feet occasionally to 7 feet, then subsiding to calm to
2 feet. 
.tuesday...southwest winds 5 to 15 knots backing south by mid
afternoon. a chance of showers and a slight chance of
thunderstorms by mid afternoon. waves calm to 2 feet. 
.tuesday night...southwest winds 10 to 20 knots. a slight chance
of thunderstorms through midnight. a chance of showers. waves
calm to 2 feet. 
.wednesday...southwest winds 10 to 20 knots. a chance of showers.
waves building to 2 to 4 feet, then subsiding to 1 to 3 feet. 
.wednesday night...southwest winds 5 to 15 knots. a chance of
showers and thunderstorms. waves subsiding to calm to 2 feet. 
.thursday...southwest winds 5 to 15 knots backing east. a chance
of showers. waves calm to 2 feet. 
.friday...northeast winds 5 to 15 knots. a chance of showers.
waves calm to 2 feet. 

$$

fzus63 kmqt 290201
glfls 
expires:202606290800;;081062

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt sun jun 28 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 29.4 low will track north, and then northwest, from the central 
plains to southern saskatchewan through monday night, deepening to 
29.2 inches. meanwhile a 30.1 inch high over the hudson bay will 
weaken and shift southeast to the east of lake erie as the 
saskatchewan low regresses southwest at 29.5 inches to montana while 
another low at 29.4 inches moves from colorado to the northern 
plains. the 2nd low moves to southern manitoba monday night to 
tuesday morning as high pressure shifts off the east coast, still at 
30.1 inches. tuesday, the low shifts north to lake winnipeg and 
deepens to 29.2 inches. the low then weakens to 29.4 inches as it 
crosses northern ontario by midday wednesday. as the low shifts east 
through thursday, weak high pressure around 30.0 inches expands over 
much of the eastern conus into the weekend.




lsz263-290800-
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-
1000 pm edt sun jun 28 2026

.rest of tonight...southeast winds 5 to 15 knots. a chance of
showers and thunderstorms. waves 2 to 4 feet subsiding to calm to
2 feet. 
.monday...east winds 5 to 15 knots increasing to 10 to 20 knots
late. a chance of showers and a slight chance of thunderstorms.
waves building to 1 to 3 feet, then subsiding to calm to 2 feet. 
.monday night...east winds 15 to 25 knots becoming southeast
10 to 20 knots after midnight, then veering southwest late. a
chance of showers through midnight. a chance of thunderstorms.
showers likely after midnight. waves building to 2 to 4 feet. 
.tuesday...southwest winds 5 to 15 knots backing south by mid
afternoon. a chance of showers and a slight chance of
thunderstorms by mid afternoon. waves subsiding to calm to
2 feet. 
.tuesday night...south winds 10 to 20 knots veering southwest
after midnight. a slight chance of thunderstorms through
midnight. a chance of showers. waves building to 2 to 4 feet. 
.wednesday...southwest winds 15 to 25 knots. a chance of showers.
waves building to 3 to 5 feet occasionally to 7 feet, then
subsiding to 2 to 4 feet. 
.wednesday night...southwest winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. a chance of showers and
thunderstorms. waves subsiding to calm to 2 feet. 
.thursday...southwest winds 5 to 15 knots backing south. a chance
of showers. waves calm to 2 feet. 
.friday...northeast winds 5 to 15 knots backing west. a chance of
showers. waves calm to 2 feet. 

$$