fzus63 kmqt 020201
glfls 
expires:202607020800;;254462

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt wed jul 1 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 broad 29.6 inch low over ontario and quebec will consolidate over 
northern quebec by thursday evening. thursday night, 30.1 inch high 
pressure develops over the southern appalachian range with 30.0 inch 
high pressure over mostly northern manitoba while broad troughing is 
in the lee of the rockies. friday, the manitboa high builds to 30.1 
and expands over western hudson bay and far northwestern ontario. 
the high builds to 30.2 inches over hudson bay saturday and into 
sunday as a weak 29.9 inch low passes through the southern great 
lakes basin. monday, the high quickly becomes dislodged to the 
southeast by a 29.7 inch low over northern manitoba, sending the 
high over lake superior, northern ontario, and quebec. by tuesday, 
the high shifts to new england while the low moves into hudson bay.




lsz162-020800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1001 pm edt wed jul 1 2026 /901 pm cdt wed jul 1 2026/

.rest of tonight...southwest winds 10 to 20 knots diminishing to
5 to 15 knots after midnight, then increasing to 10 to 20 knots
late. waves calm to 2 feet. 
.thursday...southwest winds 10 to 20 knots diminishing to 5 to
15 knots late. waves building to 1 to 3 feet, then subsiding to
calm to 2 feet. 
.thursday night...west winds 5 to 15 knots veering north after
midnight, then veering northeast late. a slight chance of showers
and thunderstorms after midnight. waves calm to 2 feet. 
.friday...northeast winds 5 to 15 knots. a slight chance of
thunderstorms through early afternoon. a chance of showers. waves
calm to 2 feet. 
.friday night...northeast winds 5 to 15 knots. a slight chance of
showers. waves calm to 2 feet. 
.saturday...northeast winds 10 to 20 knots. a chance of showers.
waves calm to 2 feet. 
.saturday night...northeast winds 5 to 15 knots. waves calm to
2 feet. 
.sunday...northeast winds 5 to 15 knots diminishing to less than
10 knots. waves calm to 2 feet. 
.monday...north winds 5 to 15 knots backing west. waves calm to
2 feet. 

$$

fzus63 kmqt 020201
glfls 
expires:202607020800;;254463

open lake forecast for lake superior
national weather service marquette mi
1000 pm edt wed jul 1 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 broad 29.6 inch low over ontario and quebec will consolidate over 
northern quebec by thursday evening. thursday night, 30.1 inch high 
pressure develops over the southern appalachian range with 30.0 inch 
high pressure over mostly northern manitoba while broad troughing is 
in the lee of the rockies. friday, the manitboa high builds to 30.1 
and expands over western hudson bay and far northwestern ontario. 
the high builds to 30.2 inches over hudson bay saturday and into 
sunday as a weak 29.9 inch low passes through the southern great 
lakes basin. monday, the high quickly becomes dislodged to the 
southeast by a 29.7 inch low over northern manitoba, sending the 
high over lake superior, northern ontario, and quebec. by tuesday, 
the high shifts to new england while the low moves into hudson bay.




lsz263-020800-
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 pm edt wed jul 1 2026

.rest of tonight...southwest winds 5 to 15 knots. waves calm to
2 feet. 
.thursday...southwest winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon. waves building to 1 to 3 feet. 
.thursday night...southwest winds 10 to 20 knots becoming west
5 to 15 knots after midnight, then becoming northeast less than
10 knots late. waves subsiding to calm to 2 feet. 
.friday...northeast winds 5 to 15 knots. a chance of showers.
waves calm to 2 feet. 
.friday night...northeast winds 5 to 15 knots. a slight chance of
showers. waves calm to 2 feet. 
.saturday...northeast winds 5 to 15 knots increasing to 10 to
20 knots by mid afternoon. a chance of showers. waves calm to
2 feet. 
.saturday night...northeast winds 5 to 15 knots veering east
after midnight. a chance of showers. waves calm to 2 feet. 
.sunday...northeast winds 5 to 15 knots veering east. waves calm
to 2 feet. 
.monday...southwest winds 5 to 15 knots. waves calm to 2 feet. 

$$