fzus63 kmqt 142002
glfls 
expires:202609150800;;453518

open lake forecast for lake superior
national weather service marquette mi
401 pm 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...

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. 




lsz162-150800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 pm edt mon sep 14 2026 /301 pm cdt mon sep 14 2026/

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

.late this afternoon...southeast winds 15 to 25 knots. showers
and a slight chance of thunderstorms. waves calm to 2 feet. 
.tonight...southeast winds 20 to 30 knots veering south after
midnight, then becoming southwest gales to 35 knots late. showers
through midnight, then a slight chance of showers after midnight.
waves building to 3 to 6 feet occasionally to 8 feet. 
.tuesday...west gales to 45 knots diminishing to 20 to 30 knots
late. waves building to 7 to 10 feet occasionally to 13 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...north winds less than 10 knots becoming east 5 to
15 knots by mid afternoon. waves calm to 2 feet. 
.wednesday night...east winds 5 to 15 knots veering west after
midnight. waves calm to 2 feet. 
.thursday...northwest winds 5 to 15 knots backing southwest by
mid afternoon. waves calm to 2 feet. 
.thursday night...northeast winds 5 to 15 knots veering east
after midnight. waves calm to 2 feet. 
.friday...east winds 10 to 20 knots. a chance of showers. waves
calm to 2 feet. 
.saturday...northeast winds 20 to 30 knots diminishing to 15 to
25 knots. a chance of showers. waves building to 2 to 4 feet. 

$$

fzus63 kmqt 142002
glfls 
expires:202609150800;;453519

open lake forecast for lake superior
national weather service marquette mi
401 pm 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...

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. 




lsz263-150800-
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-
401 pm edt mon sep 14 2026

...gale warning in effect from midnight edt tonight through
tuesday evening...

.late this afternoon...southeast winds 15 to 25 knots. a chance
of showers and a slight chance of thunderstorms. waves calm to
2 feet. 
.tonight...southeast winds 20 to 30 knots veering south after
midnight, then becoming southwest gales to 35 knots 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...southwest gales to 45 knots becoming west gales to
45 knots with a few storm force gusts to 50 knots possible in the
afternoon, then diminishing to gales to 40 knots late. 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 15 to 25 knots diminishing to 10 to
20 knots after midnight, then becoming northwest 5 to 15 knots
late. 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...southeast winds 5 to 15 knots veering south
after midnight. waves calm to 2 feet. 
.thursday...northwest winds 5 to 15 knots. waves calm to 2 feet. 
.thursday night...northeast winds 5 to 15 knots veering east
after midnight. waves calm to 2 feet. 
.friday...southeast winds 5 to 15 knots becoming east 10 to
20 knots. a chance of showers. waves calm to 2 feet. 
.saturday...northeast winds 20 to 30 knots. a chance of showers.
waves building to 2 to 4 feet. 

$$