fzus63 kmqt 100201
glfls 
expires:202606100800;;474689

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt tue jun 9 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... 

weak ridging gives way to pressure falls to around 29.8 inches over 
lake superior through this evening as troughing over the northern 
plains deepens to 29.4 inches. pressure over the lake continues to 
deepen to around 29.5 inches by late wednesday as the low tracks 
northeast along the manitoba/ontario border at 29.3 inches wednesday 
evening. pressure holds around 29.6 inches over lake superior until 
late thursday when another colorado low lifts into the upper great 
lakes at around 29.5 inches. weak ridging of 30.0 inches returns to 
lake superior late in the weekend.




lsz162-100800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1000 pm edt tue jun 9 2026 /900 pm cdt tue jun 9 2026/

...dense fog advisory in effect until 11 am edt /10 am cdt/
wednesday...

.rest of tonight...east winds 5 to 15 knots backing northeast
after midnight, then veering east late. areas of dense fog. a
chance of rain showers and a slight chance of thunderstorms after
midnight. waves calm to 2 feet. 
.wednesday...east winds 10 to 20 knots becoming northeast 15 to
25 knots in the afternoon, then becoming east 10 to 20 knots
late. patchy fog. a chance of showers and thunderstorms. waves
building to 1 to 3 feet. 
.wednesday night...east winds 5 to 15 knots becoming southwest
10 to 20 knots after midnight, then increasing to 15 to 25 knots
late. a chance of showers and thunderstorms through midnight.
waves 1 to 3 feet. 
.thursday...southwest winds 15 to 25 knots. a chance of showers
by mid afternoon. waves building to 3 to 5 feet occasionally to
7 feet, then subsiding to 2 to 4 feet. 
.thursday night...southwest winds 15 to 25 knots veering west
after midnight. a chance of showers. waves subsiding to 1 to
3 feet, then building to 2 to 4 feet. 
.friday...southwest winds 20 to 30 knots. waves building to 3 to
6 feet occasionally to 8 feet. 
.friday night...west winds 10 to 20 knots. waves subsiding to
1 to 3 feet. 
.saturday...west winds 15 to 25 knots diminishing to 10 to
20 knots. waves building to 2 to 4 feet, then subsiding to calm
to 2 feet. 
.sunday...west winds 10 to 20 knots diminishing to 5 to 15 knots.
waves building to 1 to 3 feet, then subsiding to calm to 2 feet. 

$$

fzus63 kmqt 100201
glfls 
expires:202606100800;;474690

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt tue jun 9 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... 

weak ridging gives way to pressure falls to around 29.8 inches over 
lake superior through this evening as troughing over the northern 
plains deepens to 29.4 inches. pressure over the lake continues to 
deepen to around 29.5 inches by late wednesday as the low tracks 
northeast along the manitoba/ontario border at 29.3 inches wednesday 
evening. pressure holds around 29.6 inches over lake superior until 
late thursday when another colorado low lifts into the upper great 
lakes at around 29.5 inches. weak ridging of 30.0 inches returns to 
lake superior late in the weekend.




lsz263-100800-
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 tue jun 9 2026

...dense fog advisory in effect until 11 am edt wednesday...

.rest of tonight...east winds 5 to 15 knots. areas of dense fog.
waves calm to 2 feet. 
.wednesday...east winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon. patchy fog. a chance of showers and
thunderstorms. waves building to 2 to 4 feet. 
.wednesday night...southeast winds 10 to 20 knots veering
southwest after midnight. showers likely and a chance of
thunderstorms through midnight. waves building to 3 to 5 feet
occasionally to 7 feet, then subsiding to 2 to 4 feet. 
.thursday...southwest winds 15 to 25 knots. a chance of showers
by mid afternoon. waves building to 3 to 6 feet occasionally to
8 feet. 
.thursday night...southwest winds 10 to 20 knots becoming west
20 to 30 knots after midnight. showers likely through midnight,
then a chance of showers after midnight. waves subsiding to 2 to
4 feet, then building to 3 to 6 feet occasionally to 8 feet. 
.friday...southwest winds 20 to 30 knots. waves building to 4 to
7 feet occasionally to 9 feet, then subsiding to 3 to 6 feet
occasionally to 8 feet. 
.friday night...west winds 15 to 25 knots. waves subsiding to
2 to 4 feet, then building to 3 to 5 feet occasionally to 7 feet.
.saturday...west winds 15 to 25 knots diminishing to 10 to
20 knots. waves subsiding to 1 to 3 feet. 
.sunday...west winds 10 to 20 knots. waves building to 2 to
4 feet, then subsiding to calm to 2 feet. 

$$