fzus63 kmqt 072001
glfls 
expires:202607080800;;582984

open lake forecast for lake superior
national weather service marquette mi
401 pm edt tue jul 7 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... 

pressure at 30.0 inches prevails over lake superior this evening as 
a 30.1 inch high over the northern plains extends over the upper 
great lakes through tonight. a hudson low moves into northern quebec 
throughout wednesday, sending a trough as low as 29.9 inches over 
the upper great lakes. weak high pressure to 30.0 inches then builds 
over lake superior and northern ontario thursday and friday. 
saturday, the high builds to 30.1 inches as it shifts towards 
southern ontario. the high continues to shift south sunday into 
monday as low pressure of at least 29.7 inches moves across northern 
ontario.




lsz162-080800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 pm edt tue jul 7 2026 /301 pm cdt tue jul 7 2026/

.late this afternoon...southwest winds 5 to 15 knots. waves calm
to 2 feet. 
.tonight...southwest winds 5 to 15 knots veering west after
midnight. a chance of showers. a slight chance of thunderstorms
after midnight. waves calm to 2 feet. 
.wednesday...north winds 5 to 15 knots veering south late. a
chance of showers and a slight chance of thunderstorms through
early afternoon. waves calm to 2 feet. 
.wednesday night...north winds less than 10 knots. waves calm to
2 feet. 
.thursday...north winds less than 10 knots. waves calm to 2 feet.
.thursday night...north winds less than 10 knots. waves calm to
2 feet. 
.friday...east winds less than 10 knots becoming northeast 5 to
15 knots by mid afternoon. waves calm to 2 feet. 
.friday night...northeast winds less than 10 knots backing north
after midnight. waves calm to 2 feet. 
.saturday...southwest winds 5 to 15 knots. waves calm to 2 feet. 
.sunday...southwest winds 10 to 20 knots. waves building to 1 to
3 feet. 

$$

fzus63 kmqt 072001
glfls 
expires:202607080800;;582985

open lake forecast for lake superior
national weather service marquette mi
401 pm edt tue jul 7 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... 

pressure at 30.0 inches prevails over lake superior this evening as 
a 30.1 inch high over the northern plains extends over the upper 
great lakes through tonight. a hudson low moves into northern quebec 
throughout wednesday, sending a trough as low as 29.9 inches over 
the upper great lakes. weak high pressure to 30.0 inches then builds 
over lake superior and northern ontario thursday and friday. 
saturday, the high builds to 30.1 inches as it shifts towards 
southern ontario. the high continues to shift south sunday into 
monday as low pressure of at least 29.7 inches moves across northern 
ontario.




lsz263-080800-
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 tue jul 7 2026

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

$$