fzus63 kmqt 162001
glfls 
expires:202610170800;;213090

open lake forecast for lake superior
national weather service marquette mi
401 pm edt fri oct 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 30.4 inches over lake superior this evening as a 
30.6 inch parent high continues east over the plains tonight. the 
high then slides south of the great lakes at 30.5 inches by saturday 
night as a 29.2 inch alberta clipper moves through the northern 
canadian prairie provinces towards hudson bay, deepening to 29.0 
inches by the time it arrives at hudson bay on sunday. this low is 
expected to bring weak 30.0 inch troughing to northern lake superior 
throughout the day on sunday. as the low continues east over hudson 
bay and weakens with time sunday night into monday afternoon, expect 
high pressure ridging of 30.3 inches to return to the upper great 
lakes by monday. the high pressure ridging strengthens to 30.4 
inches over lake superior by tuesday as the now 30.5 inch parent 
high over northern ontario continues east into northern quebec. as 
the high continues to retreat eastward, the ridging over lake 
superior may potentially weaken to 30.2 inches by wednesday. 




lsz162-170800-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 pm edt fri oct 16 2026 /301 pm cdt fri oct 16 2026/

.late this afternoon...northwest winds 15 to 25 knots. waves 3 to
6 feet occasionally to 8 feet subsiding to 2 to 4 feet. 
.tonight...northwest winds 10 to 20 knots backing west after
midnight, then becoming southwest 15 to 25 knots late. waves
subsiding to calm to 2 feet, then building to 3 to 5 feet
occasionally to 7 feet. 
.saturday...southwest winds 20 to 30 knots increasing to 30 knots
with a few gale force gusts to 35 knots possible in the
afternoon, then diminishing to 20 to 30 knots late. waves
building to 7 to 10 feet occasionally to 13 feet, then subsiding
to 4 to 7 feet occasionally to 9 feet. 
.saturday night...southwest winds to 30 knots with a few gale
force gusts to 40 knots possible. waves building to 7 to 10 feet
occasionally to 13 feet. 
.sunday...southwest gales to 40 knots. waves building to 8 to
11 feet occasionally to 14 feet, then subsiding to 4 to 7 feet
occasionally to 9 feet. 
.sunday night...southwest winds 15 to 25 knots becoming west 5 to
15 knots after midnight. waves subsiding to calm to 2 feet. 
.monday...northwest winds 5 to 15 knots veering east by mid
afternoon. waves calm to 2 feet. 
.monday night...northeast winds less than 10 knots increasing to
5 to 15 knots after midnight. waves calm to 2 feet. 
.tuesday...east winds 5 to 15 knots veering south. waves calm to
2 feet. 
.wednesday...south winds 5 to 15 knots veering southwest. waves
calm to 2 feet. 

$$

fzus63 kmqt 162001
glfls 
expires:202610170800;;213091

open lake forecast for lake superior
national weather service marquette mi
401 pm edt fri oct 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 30.4 inches over lake superior this evening as a 
30.6 inch parent high continues east over the plains tonight. the 
high then slides south of the great lakes at 30.5 inches by saturday 
night as a 29.2 inch alberta clipper moves through the northern 
canadian prairie provinces towards hudson bay, deepening to 29.0 
inches by the time it arrives at hudson bay on sunday. this low is 
expected to bring weak 30.0 inch troughing to northern lake superior 
throughout the day on sunday. as the low continues east over hudson 
bay and weakens with time sunday night into monday afternoon, expect 
high pressure ridging of 30.3 inches to return to the upper great 
lakes by monday. the high pressure ridging strengthens to 30.4 
inches over lake superior by tuesday as the now 30.5 inch parent 
high over northern ontario continues east into northern quebec. as 
the high continues to retreat eastward, the ridging over lake 
superior may potentially weaken to 30.2 inches by wednesday. 




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-
401 pm edt fri oct 16 2026

.late this afternoon...north winds 15 to 25 knots. waves 5 to
8 feet occasionally to 10 feet subsiding to 3 to 6 feet
occasionally to 8 feet. 
.tonight...northwest winds 10 to 20 knots becoming west 5 to
15 knots after midnight, then increasing to 15 to 25 knots late.
waves subsiding to calm to 2 feet, then building to 3 to 6 feet
occasionally to 8 feet. 
.saturday...southwest winds 20 to 30 knots increasing to 30 knots
with a few gale force gusts to 35 knots possible in the
afternoon. waves building to 8 to 11 feet occasionally to
14 feet, then subsiding to 6 to 9 feet occasionally to 11 feet. 
.saturday night...southwest winds to 30 knots with a few gale
force gusts to 40 knots possible. waves subsiding to 5 to 8 feet
occasionally to 10 feet, then building to 9 to 12 feet
occasionally to 15 feet. 
.sunday...southwest gales to 40 knots. waves building to 10 to
14 feet occasionally to 18 feet, then subsiding to 5 to 8 feet
occasionally to 10 feet. 
.sunday night...southwest winds 15 to 25 knots becoming west
10 to 20 knots after midnight. waves subsiding to 1 to 3 feet. 
.monday...northwest winds 5 to 15 knots becoming east less than
10 knots by mid afternoon. waves subsiding to calm to 2 feet. 
.monday night...east winds less than 10 knots. waves calm to
2 feet. 
.tuesday...east winds 5 to 15 knots veering south. waves calm to
2 feet. 
.wednesday...south winds 5 to 15 knots becoming southwest 10 to
20 knots. waves building to 1 to 3 feet, then subsiding to calm
to 2 feet. 

$$