fzus63 kmqt 162101
glfls 
expires:202602170900;;746584

open lake forecast for lake superior
national weather service marquette mi
400 pm est mon feb 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...

a 29.8 inch trough is slowly exiting eastern lake superior this 
afternoon, and will be followed by height rises tonight as a ridge 
builds to 30.2 inches into tuesday. the ridging then gives way to 
pressure falls into the middle of the week as a 29.1 inch low lifts 
off of the central rockies and into the upper midwest by wednesday, 
weakening to 29.2 inches as it does so. this brings troughing of at 
least 29.6 inches over the lake by wednesday afternoon before weak 
ridging moves over at 29.9 inches on thursday. a colorado low then 
moves through the central plains on thursday before lifting towards 
the straits at 29.5 inches on friday, weakening as it moves into 
ontario friday evening.



lsz162-170900-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 pm est mon feb 16 2026 /300 pm cst mon feb 16 2026/

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

.late this afternoon...southwest winds 5 to 15 knots. waves calm
to 2 feet. 
.tonight...west winds 5 to 15 knots backing southwest by
midnight, then backing northeast late. waves calm to 2 feet. 
.tuesday...east winds 10 to 20 knots increasing to gales to
35 knots. waves building to 6 to 9 feet occasionally to 11 feet. 
.tuesday night...east gales to 45 knots increasing to storm force
winds to 50 knots late. snow likely with pockets of freezing rain
in the evening, then snow after midnight. waves building to 7 to
10 feet occasionally to 13 feet. 
.wednesday...east storm force winds to 50 knots diminishing to
gales to 40 knots in the afternoon. snow in the morning, then
snow likely in the afternoon. waves subsiding to 5 to 8 feet
occasionally to 10 feet, then building to 6 to 9 feet
occasionally to 11 feet. 
.wednesday night...east gales to 40 knots. snow showers likely in
the evening, then a chance of snow showers after midnight. waves
subsiding to 3 to 6 feet occasionally to 8 feet. 
.thursday...east winds 20 to 30 knots diminishing to 15 to
25 knots in the afternoon. a chance of snow showers. waves
subsiding to 3 to 5 feet occasionally to 7 feet. 
.thursday night...northeast winds 20 to 30 knots. a chance of
snow showers. waves subsiding to 2 to 4 feet. 
.friday...northeast winds 20 to 30 knots becoming north 15 to
25 knots. a chance of snow showers. waves 2 to 4 feet. 
.saturday...northwest winds 10 to 20 knots. waves subsiding to
calm to 2 feet. 

note, wave height forecasts are for ice free areas.

$$

fzus63 kmqt 162101
glfls 
expires:202602170900;;746585

open lake forecast for lake superior
national weather service marquette mi
400 pm est mon feb 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...

a 29.8 inch trough is slowly exiting eastern lake superior this 
afternoon, and will be followed by height rises tonight as a ridge 
builds to 30.2 inches into tuesday. the ridging then gives way to 
pressure falls into the middle of the week as a 29.1 inch low lifts 
off of the central rockies and into the upper midwest by wednesday, 
weakening to 29.2 inches as it does so. this brings troughing of at 
least 29.6 inches over the lake by wednesday afternoon before weak 
ridging moves over at 29.9 inches on thursday. a colorado low then 
moves through the central plains on thursday before lifting towards 
the straits at 29.5 inches on friday, weakening as it moves into 
ontario friday evening.



lsz263-170900-
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 mon feb 16 2026

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

.late this afternoon...west winds 5 to 15 knots. waves calm to
2 feet. 
.tonight...southwest winds 5 to 15 knots diminishing to less than
10 knots by midnight, then veering north late. patchy dense fog
after midnight. waves calm to 2 feet. 
.tuesday...northeast winds 5 to 15 knots becoming east 10 to
20 knots by late morning, then increasing to 20 to 30 knots by
mid afternoon. patchy dense fog in the morning. waves building to
2 to 4 feet. 
.tuesday night...east gales to 45 knots. a chance of snow,
possibly mixed with freezing rain in the evening, then snow after
midnight. waves building to 10 to 14 feet occasionally to
18 feet. 
.wednesday...east gales to 45 knots. snow in the morning, then
snow likely in the afternoon. waves building to 12 to 17 feet
occasionally to 21 feet, then subsiding to 10 to 14 feet
occasionally to 18 feet. 
.wednesday night...east gales to 40 knots. a chance of snow
showers. waves subsiding to 8 to 11 feet occasionally to 14 feet.
.thursday...east winds 20 to 30 knots. a chance of snow showers.
waves subsiding to 5 to 8 feet occasionally to 10 feet. 
.thursday night...east winds 20 to 30 knots. waves 5 to 8 feet
occasionally to 10 feet. 
.friday...northeast winds 20 to 30 knots becoming north 15 to
25 knots. a chance of snow showers. waves subsiding to 3 to
5 feet occasionally to 7 feet. 
.saturday...north winds 10 to 20 knots becoming northwest 5 to
15 knots. waves subsiding to calm to 2 feet. 

note, wave height forecasts are for ice free areas.

$$