fzus63 kmqt 152001
glfls 
expires:202607160800;;025916

open lake forecast for lake superior
national weather service marquette mi
401 pm edt wed jul 15 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... 

30.1 inch ridging persists over lake superior through friday while 
gradually shifting east towards the st. lawrence seaway. low 
pressure passing through the northern plains looks to traverse the 
great lakes at around 29.7 inches friday night into saturday, 
although uncertainty remains high on track and strength. weak 29.9 
to 30.0 inch ridging returns to lake superior on sunday. 




lsz162-160800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 pm edt wed jul 15 2026 /301 pm cdt wed jul 15 2026/

...dense smoke advisory in effect until 11 am edt /10 am cdt/
thursday...

.late this afternoon...west winds 5 to 15 knots. smoke. waves
calm to 2 feet. 
.tonight...west winds 5 to 15 knots veering northwest after
midnight. smoke. waves calm to 2 feet. 
.thursday...north winds less than 10 knots becoming northeast
5 to 15 knots in the afternoon, then increasing to 10 to 20 knots
late. smoke. a slight chance of showers. waves calm to 2 feet. 
.thursday night...northeast winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. smoke. a chance of showers and a
slight chance of thunderstorms after midnight. waves calm to
2 feet. 
.friday...northeast winds 5 to 15 knots increasing to 10 to
20 knots by mid afternoon. smoke through early afternoon. showers
likely through early afternoon. a chance of thunderstorms. a
chance of showers by mid afternoon. waves calm to 2 feet. 
.friday night...northeast winds 5 to 15 knots backing north after
midnight. a chance of thunderstorms through midnight. a chance of
showers. waves calm to 2 feet. 
.saturday...west winds 5 to 15 knots backing southwest by mid
afternoon. waves calm to 2 feet. 
.saturday night...west winds 5 to 15 knots. waves calm to 2 feet.
.sunday...south winds 5 to 15 knots becoming southwest 10 to
20 knots. a chance of showers. waves calm to 2 feet. 
.monday...west winds 15 to 25 knots veering northwest. a chance
of showers. waves building to 2 to 4 feet, then subsiding to calm
to 2 feet. 

$$

fzus63 kmqt 152001
glfls 
expires:202607160800;;025917

open lake forecast for lake superior
national weather service marquette mi
401 pm edt wed jul 15 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... 

30.1 inch ridging persists over lake superior through friday while 
gradually shifting east towards the st. lawrence seaway. low 
pressure passing through the northern plains looks to traverse the 
great lakes at around 29.7 inches friday night into saturday, 
although uncertainty remains high on track and strength. weak 29.9 
to 30.0 inch ridging returns to lake superior on sunday. 




lsz263-160800-
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 wed jul 15 2026

...dense smoke advisory in effect until 11 am edt thursday...

.late this afternoon...west winds 5 to 15 knots. smoke. waves
calm to 2 feet. 
.tonight...west winds 5 to 15 knots veering northwest late.
smoke. waves building to 1 to 3 feet, then subsiding to calm to
2 feet. 
.thursday...northwest winds less than 10 knots becoming northeast
5 to 15 knots in the afternoon. smoke. waves calm to 2 feet. 
.thursday night...east winds 5 to 15 knots. smoke. a chance of
showers and a slight chance of thunderstorms after midnight.
waves calm to 2 feet. 
.friday...east winds 5 to 15 knots backing northeast by mid
afternoon. smoke through early afternoon. showers and a chance of
thunderstorms. waves calm to 2 feet. 
.friday night...northeast winds 5 to 15 knots backing north after
midnight. showers likely and a chance of thunderstorms through
midnight. waves calm to 2 feet. 
.saturday...northwest winds 5 to 15 knots backing southwest by
mid afternoon. waves calm to 2 feet. 
.saturday night...west winds 5 to 15 knots backing southwest
after midnight. waves calm to 2 feet. 
.sunday...southwest winds 5 to 15 knots increasing to 15 to
25 knots. waves building to 1 to 3 feet. 
.monday...west winds 15 to 25 knots veering northwest. a chance
of showers. waves building to 2 to 4 feet. 

$$