fzus63 kmqt 022001
glfls 
expires:202607030800;;297260

open lake forecast for lake superior
national weather service marquette mi
401 pm edt thu jul 2 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... 

29.6 inch low pressure centered over quebec this afternoon is 
keeping 29.8 inch troughing over the lake so far. expect height 
rises tonight into friday as high pressure over manitoba gradually 
builds to 30.1 inches while moving towards hudson bay and extends 
ridging over the lake. 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. the ridge gradually weakens to around 30.0 inches tuesday 
through wednesday. 




lsz162-030800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 pm edt thu jul 2 2026 /301 pm cdt thu jul 2 2026/

.late this afternoon...southwest winds 10 to 20 knots. waves 1 to
3 feet. 
.tonight...southwest winds 5 to 15 knots veering west after
midnight, then veering northeast late. a slight chance of showers
and thunderstorms. waves subsiding to calm to 2 feet. 
.friday...northeast winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon. waves calm to 2 feet. 
.friday night...northeast winds 10 to 20 knots. a slight chance
of showers after midnight. waves calm to 2 feet. 
.saturday...northeast winds 15 to 25 knots. a chance of showers.
waves building to 1 to 3 feet. 
.saturday night...northeast winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. a chance of showers. waves
subsiding to calm to 2 feet. 
.sunday...northeast winds 5 to 15 knots. waves calm to 2 feet. 
.sunday night...north winds 5 to 15 knots diminishing to less
than 10 knots after midnight. waves calm to 2 feet. 
.monday...north winds 5 to 15 knots diminishing to less than
10 knots. waves calm to 2 feet. 
.tuesday...southwest winds 5 to 15 knots veering west. waves calm
to 2 feet. 

$$

fzus63 kmqt 022001
glfls 
expires:202607030800;;297261

open lake forecast for lake superior
national weather service marquette mi
401 pm edt thu jul 2 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... 

29.6 inch low pressure centered over quebec this afternoon is 
keeping 29.8 inch troughing over the lake so far. expect height 
rises tonight into friday as high pressure over manitoba gradually 
builds to 30.1 inches while moving towards hudson bay and extends 
ridging over the lake. 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. the ridge gradually weakens to around 30.0 inches tuesday 
through wednesday. 




lsz263-030800-
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 thu jul 2 2026

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

$$