fzus63 kmqt 170202
glfls 
expires:202605170800;;684694

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt sat may 16 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... 

ridging builds to 30.1 inches by sunday morning over lake superior 
as the 30.2 inch parent high moves into northern ontario. this ridge 
is followed by a 29.7 inch trough extending northeast over the upper 
great lakes from the central plains by early monday. a low of around 
29.6 inches then moves over lake superior on tuesday before ridging 
of 30.2 to 30.3 inches builds back over the lake wednesday; the 
ridging may increase to 30.4 inches over the upper great lakes by 
thursday as it continues east towards the st. lawrence seaway.



lsz162-170800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1001 pm edt sat may 16 2026 /901 pm cdt sat may 16 2026/

.rest of tonight...north winds 5 to 15 knots becoming northeast
10 to 20 knots after midnight, then becoming east 15 to 25 knots
late. waves calm to 2 feet building to 2 to 4 feet. 
.sunday...east winds 20 to 30 knots becoming northeast to
30 knots with a few gale force gusts to 35 knots possible in the
afternoon. a chance of rain showers by mid afternoon. waves
building to 7 to 10 feet occasionally to 13 feet. 
.sunday night...northeast winds to 30 knots with a few gale force
gusts to 35 knots possible diminishing to 15 to 25 knots. rain
showers and a chance of thunderstorms. waves building to 8 to
11 feet occasionally to 14 feet, then subsiding to 3 to 6 feet
occasionally to 8 feet. 
.monday...northeast winds 10 to 20 knots. rain showers likely
through early afternoon. a slight chance of thunderstorms. a
chance of rain showers by mid afternoon. waves subsiding to 2 to
4 feet, then building to 3 to 5 feet occasionally to 7 feet. 
.monday night...northeast winds 20 to 30 knots. a chance of rain
showers through midnight. a slight chance of thunderstorms. rain
showers after midnight. waves building to 8 to 11 feet
occasionally to 14 feet. 
.tuesday...northeast winds 20 to 30 knots becoming north 15 to
25 knots by mid afternoon. rain showers through early afternoon.
waves building to 9 to 12 feet occasionally to 15 feet, then
subsiding to 3 to 6 feet occasionally to 8 feet. 
.tuesday night...north winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. waves subsiding to calm to 2 feet. 
.wednesday...northwest winds 5 to 15 knots backing west. waves
calm to 2 feet. 
.thursday...south winds 5 to 15 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 170202
glfls 
expires:202605170800;;684695

open lake forecast for lake superior
national weather service marquette mi
1001 pm edt sat may 16 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... 

ridging builds to 30.1 inches by sunday morning over lake superior 
as the 30.2 inch parent high moves into northern ontario. this ridge 
is followed by a 29.7 inch trough extending northeast over the upper 
great lakes from the central plains by early monday. a low of around 
29.6 inches then moves over lake superior on tuesday before ridging 
of 30.2 to 30.3 inches builds back over the lake wednesday; the 
ridging may increase to 30.4 inches over the upper great lakes by 
thursday as it continues east towards the st. lawrence seaway.



lsz263-170800-
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 sat may 16 2026

.rest of tonight...north winds 5 to 15 knots veering northeast
after midnight. waves 1 to 3 feet subsiding to calm to 2 feet. 
.sunday...east winds 10 to 20 knots increasing to 20 to 30 knots
in the afternoon. a chance of rain showers by mid afternoon.
waves building to 5 to 8 feet occasionally to 10 feet. 
.sunday night...east winds 20 to 30 knots diminishing to 15 to
25 knots after midnight, then backing northeast late. rain
showers and a chance of thunderstorms. waves subsiding to 3 to
6 feet occasionally to 8 feet, then building to 4 to 7 feet
occasionally to 9 feet. 
.monday...north winds 10 to 20 knots veering northeast by mid
afternoon. rain showers through early afternoon. a slight chance
of thunderstorms. a chance of rain showers by mid afternoon.
waves subsiding to 3 to 5 feet occasionally to 7 feet. 
.monday night...northeast winds 20 to 30 knots. a chance of rain
showers and a slight chance of thunderstorms through midnight,
then rain showers after midnight. waves building to 8 to 11 feet
occasionally to 14 feet. 
.tuesday...north winds 20 to 30 knots. rain showers likely
through early afternoon. waves building to 9 to 12 feet
occasionally to 15 feet, then subsiding to 5 to 8 feet
occasionally to 10 feet. 
.tuesday night...north winds 15 to 25 knots. waves subsiding to
3 to 5 feet occasionally to 7 feet. 
.wednesday...southwest winds 10 to 20 knots diminishing to 5 to
15 knots. waves subsiding to calm to 2 feet. 
.thursday...southwest winds 5 to 15 knots backing south. waves
calm to 2 feet. 

$$