fzus63 kmqt 090801
glfls 
expires:202606092000;;432209

open lake forecast for lake superior
national weather service marquette mi
400 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 around 30.0 inches lingers over lake superior this 
morning. then, 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 29.5 inch 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 through wednesday as the low tracks 
northeast along the manitoba/ontario line at 29.3 inches by 
wednesday evening. pressure holds to around 29.6 inches over lake 
superior through the end of the week as another colorado low lifts 
into the upper great lakes at around 29.5 inches late thursday. weak 
ridging of 30.0 inches could return to lake superior by the end of 
the day saturday.




lsz162-092000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 am edt tue jun 9 2026 /300 am cdt tue jun 9 2026/

...dense fog advisory in effect until 2 pm edt /1 pm cdt/ this
afternoon...

.early this morning...northeast winds 5 to 15 knots. widespread
dense fog. waves calm to 2 feet. 
.today...northeast winds 5 to 15 knots veering east in the
afternoon, then backing northeast late. areas of dense fog. waves
calm to 2 feet. 
.tonight...northeast winds 5 to 15 knots. patchy fog through
midnight, then areas of dense fog after midnight. 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 dense fog through early afternoon. 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 090801
glfls 
expires:202606092000;;432210

open lake forecast for lake superior
national weather service marquette mi
400 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 around 30.0 inches lingers over lake superior this 
morning. then, 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 29.5 inch 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 through wednesday as the low tracks 
northeast along the manitoba/ontario line at 29.3 inches by 
wednesday evening. pressure holds to around 29.6 inches over lake 
superior through the end of the week as another colorado low lifts 
into the upper great lakes at around 29.5 inches late thursday. weak 
ridging of 30.0 inches could return to lake superior by the end of 
the day saturday.




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-
400 am edt tue jun 9 2026

...dense fog advisory in effect until 2 pm edt this afternoon...

.early this morning...east winds less than 10 knots. areas of
dense fog. a chance of showers. waves calm to 2 feet. 
.today...northeast winds less than 10 knots increasing to 5 to
15 knots in the afternoon. a slight chance of showers through
early afternoon. areas of dense fog through early afternoon, then
patchy fog by mid afternoon. waves calm to 2 feet. 
.tonight...east winds 5 to 15 knots. patchy fog through midnight,
then areas of dense fog after midnight. waves calm to 2 feet. 
.wednesday...east winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon. areas of dense fog through early
afternoon. 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. 

$$