fzus63 kmqt 141401
glfls 
expires:202609142000;;439142

open lake forecast for lake superior
national weather service marquette mi
1001 am edt mon sep 14 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...

30.2 inch ridging over the upper great lakes remains through the 
remainder of the morning hours. a low around 29.3 inches skirts by 
lake winnipeg into northern ontario monday night into early tuesday, 
bringing 29.7 inch troughing over lake superior. 30.2 inch high 
pressure develops over the northern plains on tuesday, strengthening 
to 30.4 inches as it crosses the upper great lakes on wednesday. 
high pressure ridging of 30.2 to 30.3 inches then looks to remain 
over lake superior through the rest of the workweek. 




lsz162-142000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1001 am edt mon sep 14 2026 /901 am cdt mon sep 14 2026/

...gale warning in effect from tuesday morning through tuesday
afternoon...

.rest of today...south winds 10 to 20 knots backing southeast in
the afternoon, then increasing to 15 to 25 knots late. showers
and a slight chance of thunderstorms by mid afternoon. waves calm
to 2 feet. 
.tonight...south gales to 35 knots veering southwest late.
showers and a slight chance of thunderstorms through midnight,
then a slight chance of showers after midnight. waves building to
4 to 7 feet occasionally to 9 feet. 
.tuesday...west gales to 40 knots diminishing to 20 to 30 knots
late. waves building to 8 to 11 feet occasionally to 14 feet,
then subsiding to 3 to 5 feet occasionally to 7 feet. 
.tuesday night...west winds 10 to 20 knots becoming northwest
5 to 15 knots after midnight. waves subsiding to calm to 2 feet. 
.wednesday...northeast winds 5 to 15 knots veering east by mid
afternoon. waves calm to 2 feet. 
.wednesday night...east winds 5 to 15 knots backing northwest
after midnight. waves calm to 2 feet. 
.thursday...northwest winds 5 to 15 knots veering northeast.
waves calm to 2 feet. 
.friday...east winds 5 to 15 knots becoming northeast 10 to
20 knots. a chance of showers. waves calm to 2 feet. 

$$

fzus63 kmqt 141401
glfls 
expires:202609142000;;439143

open lake forecast for lake superior
national weather service marquette mi
1001 am edt mon sep 14 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...

30.2 inch ridging over the upper great lakes remains through the 
remainder of the morning hours. a low around 29.3 inches skirts by 
lake winnipeg into northern ontario monday night into early tuesday, 
bringing 29.7 inch troughing over lake superior. 30.2 inch high 
pressure develops over the northern plains on tuesday, strengthening 
to 30.4 inches as it crosses the upper great lakes on wednesday. 
high pressure ridging of 30.2 to 30.3 inches then looks to remain 
over lake superior through the rest of the workweek. 




lsz263-142000-
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 sep 14 2026

...gale warning in effect from late tonight through tuesday
evening...

.rest of today...south winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon, then becoming southeast 15 to 25 knots
late. a chance of showers and a slight chance of thunderstorms by
mid afternoon. waves calm to 2 feet building to 1 to 3 feet. 
.tonight...south gales to 35 knots veering southwest late.
showers and a slight chance of thunderstorms through midnight,
then a chance of showers after midnight. waves building to 4 to
7 feet occasionally to 9 feet, then subsiding to 3 to 6 feet
occasionally to 8 feet. 
.tuesday...southwest gales to 45 knots veering west in the
afternoon. waves building to 10 to 14 feet occasionally to
18 feet, then subsiding to 6 to 9 feet occasionally to 11 feet. 
.tuesday night...west winds 20 to 30 knots becoming northwest
5 to 15 knots after midnight. waves subsiding to calm to 2 feet. 
.wednesday...north winds 5 to 15 knots veering east by mid
afternoon. waves calm to 2 feet. 
.wednesday night...south winds 5 to 15 knots veering southwest
after midnight. waves calm to 2 feet. 
.thursday...northwest winds 5 to 15 knots backing southeast.
waves calm to 2 feet. 
.friday...south winds 5 to 15 knots becoming east 10 to 20 knots.
a chance of showers. waves calm to 2 feet. 

$$