fzus63 kmqt 271401
glfls 
expires:202607272000;;695141

open lake forecast for lake superior
national weather service marquette mi
1001 am edt mon jul 27 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 29.6 inch clipper low skims over far western lake superior this 
morning before departing east towards the mid-atlantic this evening 
through tuesday. behind the clipper, weak ridging of 29.9 to 30.0 
inches returns to lake superior on tuesday and remains until 
thursday morning. the ridging then gives way to weak troughing of 
29.9 inches before becoming weak ridging of 29.9 to 30.0 inches 
again the rest of this week.




lsz162-272000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1001 am edt mon jul 27 2026 /901 am cdt mon jul 27 2026/

...dense fog advisory in effect until noon edt /11 am cdt/
today...

.rest of today...northeast winds 10 to 20 knots diminishing to
5 to 15 knots late. patchy fog. a slight chance of thunderstorms
by late morning. a slight chance of showers. waves calm to 2 feet
building to 1 to 3 feet, then subsiding to calm to 2 feet. 
.tonight...north winds 5 to 15 knots diminishing to less than
10 knots after midnight. patchy fog. waves calm to 2 feet. 
.tuesday...north winds less than 10 knots veering south in the
afternoon, then becoming east 5 to 15 knots late. patchy fog
through early afternoon. waves calm to 2 feet. 
.tuesday night...northeast winds 5 to 15 knots becoming north
less than 10 knots after midnight. waves calm to 2 feet. 
.wednesday...north winds less than 10 knots becoming east 5 to
15 knots by mid afternoon. waves calm to 2 feet. 
.wednesday night...northeast winds 5 to 15 knots diminishing to
less than 10 knots after midnight. waves calm to 2 feet. 
.thursday...southwest winds 5 to 15 knots veering west. a chance
of showers and thunderstorms. waves calm to 2 feet. 
.friday...west winds 5 to 15 knots veering north. waves calm to
2 feet. 

$$

fzus63 kmqt 271401
glfls 
expires:202607272000;;695142

open lake forecast for lake superior
national weather service marquette mi
1001 am edt mon jul 27 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 29.6 inch clipper low skims over far western lake superior this 
morning before departing east towards the mid-atlantic this evening 
through tuesday. behind the clipper, weak ridging of 29.9 to 30.0 
inches returns to lake superior on tuesday and remains until 
thursday morning. the ridging then gives way to weak troughing of 
29.9 inches before becoming weak ridging of 29.9 to 30.0 inches 
again the rest of this week.




lsz263-272000-
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-
1001 am edt mon jul 27 2026

...dense fog advisory in effect until noon edt today...

.rest of today...northeast winds 10 to 20 knots. patchy fog. a
slight chance of thunderstorms by late morning. a chance of
showers. waves calm to 2 feet building to 1 to 3 feet, then
subsiding to calm to 2 feet. 
.tonight...north winds 5 to 15 knots diminishing to less than
10 knots late. patchy fog. waves calm to 2 feet. 
.tuesday...northeast winds less than 10 knots becoming south 5 to
15 knots in the afternoon. patchy fog through early afternoon.
waves calm to 2 feet. 
.tuesday night...east winds less than 10 knots veering south
after midnight. waves calm to 2 feet. 
.wednesday...south winds 5 to 15 knots backing east by mid
afternoon. waves calm to 2 feet. 
.wednesday night...east winds less than 10 knots veering south
after midnight. waves calm to 2 feet. 
.thursday...southwest winds 5 to 15 knots veering west. a chance
of showers. waves calm to 2 feet. 
.friday...west winds 5 to 15 knots veering northwest. waves calm
to 2 feet. 

$$