fzus63 kmqt 080203
glfls 
expires:202605080800;;193554

open lake forecast for lake superior
national weather service marquette mi
1002 pm edt thu may 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... 

weak troughing of around 29.8 inches remains over the lake until 
friday morning associated with a pair of 29.4 inch lows (one over 
labrador and one over hudson bay). the hudson low drops a 29.6 inch 
trough over western lake superior friday evening, passing over the 
rest of the lake overnight into saturday morning. by saturday 
evening, lake superior will be situated between a 29.5 inch low over 
western quebec and a 30.2 inch high over saskatchewan. by sunday 
afternoon, the low will shift into central quebec while the high 
moves over lake winnipeg. for monday afternoon, the high builds to 
30.3 inches and resides over lake superior. meanwhile, monday 
evening, a 29.7 inch low develops over the northern plains. this low 
passes through or near the upper great lakes by tuesday afternoon as 
the 30.1 inch high shifts east.



lsz162-080800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1002 pm edt thu may 7 2026 /902 pm cdt thu may 7 2026/

.rest of tonight...southwest winds 5 to 15 knots. waves calm to
2 feet. 
.friday...southwest winds 5 to 15 knots. a chance of rain showers
by mid afternoon. waves calm to 2 feet. 
.friday night...north winds 5 to 15 knots backing west after
midnight, then becoming northwest 10 to 20 knots late. a chance
of rain showers. waves calm to 2 feet. 
.saturday...northwest winds 10 to 20 knots becoming west 5 to
15 knots by mid afternoon. a slight chance of rain showers
through early afternoon, then sprinkles by mid afternoon. waves
calm to 2 feet. 
.saturday night...northwest winds 10 to 20 knots. waves calm to
2 feet. 
.sunday...northwest winds 10 to 20 knots becoming west 5 to
15 knots by mid afternoon. waves calm to 2 feet. 
.sunday night...northwest winds 5 to 15 knots veering north after
midnight. waves calm to 2 feet. 
.monday...southeast winds 5 to 15 knots backing east. waves calm
to 2 feet. 
.tuesday...east winds 5 to 15 knots backing north. a chance of
rain showers. waves calm to 2 feet. 

$$

fzus63 kmqt 080203
glfls 
expires:202605080800;;193555

open lake forecast for lake superior
national weather service marquette mi
1002 pm edt thu may 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... 

weak troughing of around 29.8 inches remains over the lake until 
friday morning associated with a pair of 29.4 inch lows (one over 
labrador and one over hudson bay). the hudson low drops a 29.6 inch 
trough over western lake superior friday evening, passing over the 
rest of the lake overnight into saturday morning. by saturday 
evening, lake superior will be situated between a 29.5 inch low over 
western quebec and a 30.2 inch high over saskatchewan. by sunday 
afternoon, the low will shift into central quebec while the high 
moves over lake winnipeg. for monday afternoon, the high builds to 
30.3 inches and resides over lake superior. meanwhile, monday 
evening, a 29.7 inch low develops over the northern plains. this low 
passes through or near the upper great lakes by tuesday afternoon as 
the 30.1 inch high shifts east.



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-
1002 pm edt thu may 7 2026

.rest of tonight...southwest winds 5 to 15 knots. waves calm to
2 feet. 
.friday...southwest winds 5 to 15 knots. a chance of rain showers
by mid afternoon. waves calm to 2 feet. 
.friday night...southwest winds 5 to 15 knots veering northwest
late. a chance of rain showers. waves calm to 2 feet. 
.saturday...northwest winds 5 to 15 knots backing west by mid
afternoon. a chance of rain showers. waves calm to 2 feet. 
.saturday night...west winds 5 to 15 knots veering northwest
after midnight. waves building to 1 to 3 feet. 
.sunday...northwest winds 5 to 15 knots backing west by mid
afternoon. waves subsiding to calm to 2 feet. 
.sunday night...west winds 5 to 15 knots veering north after
midnight. waves calm to 2 feet. 
.monday...north winds 5 to 15 knots veering southeast. waves calm
to 2 feet. 
.tuesday...east winds 5 to 15 knots backing northeast. a chance
of rain showers. waves calm to 2 feet. 

$$