fzus63 kmqt 091401
glfls 
expires:202606092000;;445441

open lake forecast for lake superior
national weather service marquette mi
1000 am 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 29.9 inches over 
the lake by this afternoon as 30.2 inch high pressure moves off the 
mid atlantic coast and troughing over the rockies deepens to 29.4 
inches over the northern plains. 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 on 
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 begins to 
move over the lake on friday, reaching 29.8 inches by saturday 
morning, 30.0 inches by sunday morning, and lingering through the 
day.




lsz162-092000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1000 am edt tue jun 9 2026 /900 am cdt tue jun 9 2026/

...dense fog advisory in effect until 8 pm edt /7 pm cdt/ this
evening...

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

$$

fzus63 kmqt 091401
glfls 
expires:202606092000;;445442

open lake forecast for lake superior
national weather service marquette mi
1000 am 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 29.9 inches over 
the lake by this afternoon as 30.2 inch high pressure moves off the 
mid atlantic coast and troughing over the rockies deepens to 29.4 
inches over the northern plains. 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 on 
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 begins to 
move over the lake on friday, reaching 29.8 inches by saturday 
morning, 30.0 inches by sunday morning, and lingering through the 
day.




lsz263-092000-
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 am edt tue jun 9 2026

...dense fog advisory in effect until 8 pm edt this evening...

.rest of today...east winds less than 10 knots backing northeast
in the afternoon, then increasing to 5 to 15 knots late. areas of
dense fog by late morning, then patchy fog by mid afternoon.
waves calm to 2 feet. 
.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. some thunderstorms may be severe. waves building
to 2 to 4 feet. 
.wednesday night...south winds 10 to 20 knots veering southwest
after midnight. showers and a chance of thunderstorms through
midnight, then a slight chance of showers after midnight. some
thunderstorms may be severe. 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 5 feet occasionally to
7 feet. 
.thursday night...southwest winds 15 to 25 knots increasing to
20 to 30 knots after midnight. waves building to 3 to 6 feet
occasionally to 8 feet. 
.friday...southwest winds 20 to 30 knots becoming west 15 to
25 knots. waves building to 4 to 7 feet occasionally to 9 feet,
then subsiding 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 calm to 2 feet. 

$$