fzus63 kmqt 152101
glfls 
expires:202602160900;;690215

open lake forecast for lake superior
national weather service marquette mi
400 pm est sun feb 15 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 weak 29.9 inch ridge is analyzed over the lake this afternoon, 
weakening overnight ahead of a deeper 29.8 inch trough that moves 
over the lake on monday. ridging builds to 30.2 inches over the lake 
on tuesday, giving way to pressure falls into the middle of the week 
as a 29.3 inch low lifts off of the central rockies into the upper 
midwest by wednesday. this brings troughing of at least 29.7 inches 
over the lake by wednesday afternoon, followed by weak ridging of 
29.8 inches into thursday ahead of another potential low pressure 
system friday.



lsz162-160900-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 pm est sun feb 15 2026 /300 pm cst sun feb 15 2026/

...gale watch in effect from tuesday afternoon through wednesday
evening...

.late this afternoon...south winds 5 to 15 knots. patchy fog.
waves calm to 2 feet. 
.tonight...south winds 5 to 15 knots veering southwest by
midnight. a slight chance of rain and snow showers. waves calm to
2 feet. 
.monday...northwest winds 5 to 15 knots backing southwest by mid
afternoon. waves calm to 2 feet. 
.monday night...southwest winds less than 10 knots veering west
by midnight, then becoming northeast 5 to 15 knots late. waves
calm to 2 feet. 
.tuesday...east winds 10 to 20 knots increasing to gales to
35 knots in the afternoon. a slight chance of rain and snow
showers in the afternoon. waves calm to 2 feet. 
.tuesday night...east gales to 40 knots increasing to storm force
winds to 50 knots after midnight. snow showers likely in the
evening. rain showers. snow showers after midnight. waves calm to
2 feet. 
.wednesday...east gales to 45 knots. snow showers. rain showers
in the afternoon. waves calm to 2 feet. 
.wednesday night...east gales to 45 knots. snow showers likely in
the evening, then a chance of snow showers after midnight. waves
calm to 2 feet. 
.thursday...northeast winds 15 to 25 knots. a chance of snow
showers. waves calm to 2 feet. 
.friday...north winds 15 to 25 knots backing northwest. a chance
of snow showers. waves calm to 2 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 152101
glfls 
expires:202602160900;;690216

open lake forecast for lake superior
national weather service marquette mi
400 pm est sun feb 15 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 weak 29.9 inch ridge is analyzed over the lake this afternoon, 
weakening overnight ahead of a deeper 29.8 inch trough that moves 
over the lake on monday. ridging builds to 30.2 inches over the lake 
on tuesday, giving way to pressure falls into the middle of the week 
as a 29.3 inch low lifts off of the central rockies into the upper 
midwest by wednesday. this brings troughing of at least 29.7 inches 
over the lake by wednesday afternoon, followed by weak ridging of 
29.8 inches into thursday ahead of another potential low pressure 
system friday.



lsz263-160900-
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-
400 pm est sun feb 15 2026

...gale watch in effect from late tuesday night through late
wednesday night...

.late this afternoon...south winds less than 10 knots. patchy
fog. waves calm to 2 feet. 
.tonight...south winds 5 to 15 knots veering southwest by
midnight. patchy fog in the evening. a slight chance of snow
showers. a slight chance of rain showers after midnight. waves
calm to 2 feet. 
.monday...northwest winds 5 to 15 knots backing west by mid
afternoon. waves calm to 2 feet. 
.monday night...southwest winds 5 to 15 knots becoming west less
than 10 knots by midnight, then veering northwest late. waves
calm to 2 feet. 
.tuesday...east winds 10 to 20 knots increasing to 20 to 30 knots
in the afternoon. waves building to 2 to 4 feet. 
.tuesday night...east gales to 45 knots. a chance of snow showers
in the evening. rain showers. snow showers likely after midnight.
waves building to 11 to 15 feet occasionally to 19 feet. 
.wednesday...east gales to 45 knots. snow showers. waves building
to 12 to 17 feet occasionally to 21 feet. 
.wednesday night...east gales to 45 knots. snow showers likely in
the evening, then a chance of snow showers after midnight. waves
subsiding to 7 to 10 feet occasionally to 13 feet. 
.thursday...east winds 20 to 30 knots becoming northeast 15 to
25 knots. a chance of snow showers. waves subsiding to 3 to
5 feet occasionally to 7 feet. 
.friday...north winds 15 to 25 knots becoming northwest 10 to
20 knots. a chance of snow showers. waves building to 3 to 6 feet
occasionally to 8 feet, then subsiding to 1 to 3 feet. 

note, wave height forecasts are for ice free areas.

$$