fzus63 kmqt 052001
glfls 
expires:202607060800;;471976

open lake forecast for lake superior
national weather service marquette mi
401 pm edt sun jul 5 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 30.2 inch high over the hudson bay will push southeast into quebec 
through monday morning, extending a 30.1 inch ridge over lake 
superior. meanwhile, low pressure will move from northern 
saskatchewan to hudson bay, deepening to 29.5 inches as it reaches 
hudson bay on tuesday morning. as the low departs the hudson bay, 
moving east, it will extend a 29.8 inch trough over lake superior on 
wednesday. thereafter high pressure at 29.9 inches builds over the 
upper great lakes for thursday and friday.




lsz162-060800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 pm edt sun jul 5 2026 /301 pm cdt sun jul 5 2026/

.late this afternoon...northeast winds 5 to 15 knots. waves calm
to 2 feet. 
.tonight...northeast winds 5 to 15 knots diminishing to less than
10 knots after midnight. waves calm to 2 feet. 
.monday...northeast winds less than 10 knots becoming east 5 to
15 knots in the afternoon. waves calm to 2 feet. 
.monday night...north winds less than 10 knots becoming southwest
5 to 15 knots late. a chance of showers and a slight chance of
thunderstorms after midnight. waves calm to 2 feet. 
.tuesday...southwest winds 5 to 15 knots. a chance of showers. a
slight chance of thunderstorms by mid afternoon. waves calm to
2 feet. 
.tuesday night...west winds 5 to 15 knots. a chance of showers
through midnight. showers likely after midnight. waves calm to
2 feet. 
.wednesday...northeast winds 5 to 15 knots. showers likely
through early afternoon. a chance of showers by mid afternoon.
waves calm to 2 feet. 
.wednesday night...north winds 5 to 15 knots. a chance of
showers. waves calm to 2 feet. 
.thursday...northeast winds 5 to 15 knots becoming north less
than 10 knots. waves calm to 2 feet. 
.friday...east winds 5 to 15 knots backing north. waves calm to
2 feet. 

$$

fzus63 kmqt 052001
glfls 
expires:202607060800;;471977

open lake forecast for lake superior
national weather service marquette mi
401 pm edt sun jul 5 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 30.2 inch high over the hudson bay will push southeast into quebec 
through monday morning, extending a 30.1 inch ridge over lake 
superior. meanwhile, low pressure will move from northern 
saskatchewan to hudson bay, deepening to 29.5 inches as it reaches 
hudson bay on tuesday morning. as the low departs the hudson bay, 
moving east, it will extend a 29.8 inch trough over lake superior on 
wednesday. thereafter high pressure at 29.9 inches builds over the 
upper great lakes for thursday and friday.




lsz263-060800-
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 sun jul 5 2026

.late this afternoon...northeast winds 5 to 15 knots. waves calm
to 2 feet. 
.tonight...northeast winds 5 to 15 knots veering east after
midnight, then diminishing to less than 10 knots late. waves calm
to 2 feet. 
.monday...east winds less than 10 knots. waves calm to 2 feet. 
.monday night...east winds 5 to 15 knots veering southwest after
midnight. a slight chance of showers after midnight. waves calm
to 2 feet. 
.tuesday...southwest winds 5 to 15 knots. a chance of showers. a
slight chance of thunderstorms by mid afternoon. waves calm to
2 feet. 
.tuesday night...southwest winds 5 to 15 knots diminishing to
less than 10 knots after midnight. showers likely after midnight.
waves calm to 2 feet. 
.wednesday...northeast winds less than 10 knots increasing to
5 to 15 knots by mid afternoon. showers likely through early
afternoon. a chance of showers by mid afternoon. waves calm to
2 feet. 
.wednesday night...north winds 5 to 15 knots. a chance of
showers. waves calm to 2 feet. 
.thursday...northeast winds 5 to 15 knots becoming south less
than 10 knots. waves calm to 2 feet. 
.friday...southeast winds 5 to 15 knots veering southwest. waves
calm to 2 feet. 

$$