fzus63 kmqt 142002
glfls 
expires:202507150800;;441651

open lake forecast for lake superior
national weather service marquette mi
401 pm edt mon jul 14 2025

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...

tonight through tuesday night, a 29.7 inch low over the high plains 
will pass a 29.9 inch trough over lake superior. wednesday through 
friday, a 30.1 inch high pressure will slowly move from the canadian 
prairie to lake superior, reaching the lower great lakes saturday. 
saturday evening, a 29.9 inch low pressure will move from the 
northern plains over the lake.



lsz162-150800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 pm edt mon jul 14 2025 /301 pm cdt mon jul 14 2025/

.late this afternoon...south winds 5 to 15 knots. areas of smoke.
waves calm to 2 feet. 
.tonight...east winds 5 to 15 knots becoming northeast 10 to
20 knots late. areas of smoke. a chance of showers and
thunderstorms. waves calm to 2 feet. 
.tuesday...east winds 10 to 20 knots backing north in the
afternoon. a chance of showers through early afternoon. a chance
of thunderstorms. showers likely by mid afternoon. waves calm to
2 feet. 
.tuesday night...northeast winds 10 to 20 knots increasing to
15 to 25 knots late. showers and a chance of thunderstorms. waves
building to 1 to 3 feet. 
.wednesday...northeast winds 15 to 25 knots. showers likely
through early afternoon. a slight chance of thunderstorms. a
chance of showers by mid afternoon. waves building to 2 to
4 feet. 
.wednesday night...northeast winds 10 to 20 knots backing north
after midnight. a chance of showers. waves subsiding to calm to
2 feet. 
.thursday...north winds 10 to 20 knots becoming south 5 to
15 knots by mid afternoon. waves calm to 2 feet. 
.thursday night...west winds 5 to 15 knots. waves calm to 2 feet.
.friday...southwest winds 5 to 15 knots backing east. a chance of
showers. waves calm to 2 feet. 
.saturday...northeast winds 5 to 15 knots backing north. a chance
of showers. waves calm to 2 feet. 

$$

fzus63 kmqt 142002
glfls 
expires:202507150800;;441652

open lake forecast for lake superior
national weather service marquette mi
401 pm edt mon jul 14 2025

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...

tonight through tuesday night, a 29.7 inch low over the high plains 
will pass a 29.9 inch trough over lake superior. wednesday through 
friday, a 30.1 inch high pressure will slowly move from the canadian 
prairie to lake superior, reaching the lower great lakes saturday. 
saturday evening, a 29.9 inch low pressure will move from the 
northern plains over the lake.



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 jul 14 2025

.late this afternoon...southwest winds 5 to 15 knots. areas of
smoke. waves calm to 2 feet. 
.tonight...east winds 5 to 15 knots. areas of smoke. a chance of
showers. a chance of thunderstorms after midnight. waves calm to
2 feet. 
.tuesday...south winds 5 to 15 knots veering northwest in the
afternoon, then veering north late. a chance of showers through
early afternoon. a chance of thunderstorms. showers likely by mid
afternoon. waves calm to 2 feet. 
.tuesday night...northeast winds 5 to 15 knots increasing to
10 to 20 knots after midnight. showers and a chance of
thunderstorms. waves building to 1 to 3 feet. 
.wednesday...northeast winds 10 to 20 knots. showers likely
through early afternoon. a slight chance of thunderstorms. a
chance of showers by mid afternoon. waves building to 2 to
4 feet. 
.wednesday night...northeast winds 5 to 15 knots backing north
after midnight. a chance of showers. waves subsiding to calm to
2 feet. 
.thursday...north winds 5 to 15 knots backing southwest by mid
afternoon. waves calm to 2 feet. 
.thursday night...west winds 5 to 15 knots backing southwest
after midnight. waves calm to 2 feet. 
.friday...southwest winds 5 to 15 knots backing south. a chance
of showers. waves calm to 2 feet. 
.saturday...northeast winds 5 to 15 knots backing north. waves
calm to 2 feet. 

$$