fzus63 kmqt 282001
glfls 
expires:202606290800;;068375

open lake forecast for lake superior
national weather service marquette mi
400 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 tomorrow night 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.




lsz162-290800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 pm edt sun jun 28 2026 /301 pm cdt sun jun 28 2026/

.late this afternoon...northeast winds 10 to 20 knots. a chance
of showers and a slight chance of thunderstorms. waves 2 to
4 feet. 
.tonight...northeast winds 10 to 20 knots veering east after
midnight. showers and a chance of thunderstorms. waves subsiding
to 1 to 3 feet. 
.monday...east winds 10 to 20 knots becoming northeast 15 to
25 knots in the afternoon. a slight chance of showers and
thunderstorms through early afternoon. waves building to 3 to
5 feet occasionally to 7 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. showers likely through midnight. a chance of thunderstorms.
a chance of showers after midnight. waves 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 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 282001
glfls 
expires:202606290800;;068376

open lake forecast for lake superior
national weather service marquette mi
400 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 tomorrow night 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.




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-
401 pm edt sun jun 28 2026

.late this afternoon...east winds 10 to 20 knots. a slight chance
of showers. waves 2 to 4 feet. 
.tonight...east winds 10 to 20 knots veering southeast after
midnight, then backing east late. a chance of showers and
thunderstorms. waves subsiding to 1 to 3 feet. 
.monday...east winds 10 to 20 knots. a slight chance of showers
and thunderstorms through early afternoon. waves building to 2 to
4 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 3 to 5 feet
occasionally to 7 feet, then subsiding 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 chance of showers. waves building to 2 to
4 feet. 
.wednesday...southwest winds 15 to 25 knots. a chance of showers.
waves subsiding to 1 to 3 feet, then building 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. 

$$