311
FZUS63 KMQT 252101
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
400 PM EST Wed Feb 25 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 29.3 inch low departs into Quebec this evening, with weak ridging
building over Lake Superior at 29.8 inches tonight into Thursday. A
strong clipper low averaging 29.1 inches moves across northern
Ontario Friday and Friday night, sending a 29.4 inch trough across
the lake. High pressure builds over the lake this weekend,
strengthening to 30.6 inches by Sunday.


LSZ162-260900-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
400 PM EST Wed Feb 25 2026 /300 PM CST Wed Feb 25 2026/

...GALE WATCH IN EFFECT FROM FRIDAY AFTERNOON THROUGH LATE FRIDAY
NIGHT...

.LATE THIS AFTERNOON...Northwest winds 10 to 20 knots. Waves 1 to
3 feet.
.TONIGHT...Northwest winds 5 to 15 knots backing southwest late.
A chance of snow showers after midnight. Waves subsiding to calm
to 2 feet.
.THURSDAY...Southwest winds 5 to 15 knots increasing to 10 to
20 knots. Snow likely in the morning, then a chance of snow in
the afternoon. Waves calm to 2 feet.
.THURSDAY NIGHT...Southwest winds 10 to 20 knots. Waves calm to
2 feet.
.FRIDAY...Southwest winds 15 to 25 knots becoming west gales to
45 knots in the afternoon. Waves building to 6 to 9 feet
occasionally to 11 feet.
.FRIDAY NIGHT...West gales to 45 knots becoming northwest gales
to 35 knots after midnight. Heavy freezing spray. Waves subsiding
to 3 to 5 feet occasionally to 7 feet.
.SATURDAY...Northwest winds 15 to 25 knots diminishing to 10 to
20 knots in the afternoon. Waves subsiding to calm to 2 feet.
.SATURDAY NIGHT...Northwest winds 10 to 20 knots becoming north
5 to 15 knots after midnight. Waves calm to 2 feet.
.SUNDAY...North winds 5 to 15 knots veering south. Waves calm to
2 feet.
.MONDAY...Southwest winds 10 to 20 knots increasing to gales to
35 knots. Waves building to 5 to 8 feet occasionally to 10 feet.

Note, wave height forecasts are for ice free areas.

$$

LSZ263-260900-
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 Wed Feb 25 2026

...GALE WATCH IN EFFECT FROM FRIDAY AFTERNOON THROUGH LATE FRIDAY
NIGHT...

.LATE THIS AFTERNOON...Northwest winds 10 to 20 knots. A slight
chance of snow showers. Waves 2 to 4 feet.
.TONIGHT...Northwest winds 10 to 20 knots diminishing to 5 to
15 knots by midnight, then backing west late. A slight chance of
snow showers. Waves subsiding to calm to 2 feet.
.THURSDAY...Southwest winds 5 to 15 knots. Snow likely in the
morning, then a chance of snow in the afternoon. Waves building
to 1 to 3 feet, then subsiding to calm to 2 feet.
.THURSDAY NIGHT...Southwest winds 5 to 15 knots increasing to
10 to 20 knots by midnight. A slight chance of snow in the
evening. Waves building to 1 to 3 feet.
.FRIDAY...Southwest winds 20 to 30 knots becoming west gales to
45 knots in the afternoon. Waves building to 8 to 11 feet
occasionally to 14 feet.
.FRIDAY NIGHT...West gales to 45 knots becoming northwest gales
to 40 knots after midnight. Heavy freezing spray. Waves building
to 10 to 14 feet occasionally to 18 feet, then subsiding to 6 to
9 feet occasionally to 11 feet.
.SATURDAY...Northwest winds 20 to 30 knots diminishing to 10 to
20 knots in the afternoon. Waves subsiding to 1 to 3 feet.
.SATURDAY NIGHT...Northwest winds 10 to 20 knots veering north
after midnight. Waves building to 2 to 4 feet, then subsiding to
1 to 3 feet.
.SUNDAY...North winds 5 to 15 knots veering south. Waves
subsiding to calm to 2 feet, then building to 1 to 3 feet.
.MONDAY...Southwest winds 10 to 20 knots increasing to gales to
35 knots. Waves building to 7 to 10 feet occasionally to 13 feet.

Note, wave height forecasts are for ice free areas.

$$

LSZ264-260900-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
400 PM EST Wed Feb 25 2026

...HEAVY FREEZING SPRAY WARNING IN EFFECT UNTIL 7 PM EST THIS
EVENING...

.LATE THIS AFTERNOON...Northwest winds 15 to 25 knots. A slight
chance of snow showers. Waves 3 to 6 feet occasionally to 8 feet.
.TONIGHT...Northwest winds 15 to 25 knots diminishing to 10 to
20 knots by midnight, then becoming west 5 to 15 knots late. A
slight chance of snow showers. Waves subsiding to calm to 2 feet.
.THURSDAY...Southwest winds 5 to 15 knots backing south by late
morning, then veering southwest by mid afternoon. A chance of
snow in the morning, then snow likely in the afternoon. Waves
building to 1 to 3 feet.
.THURSDAY NIGHT...Southwest winds 5 to 15 knots increasing to
10 to 20 knots late. A slight chance of snow in the evening.
Waves subsiding to calm to 2 feet, then building to 1 to 3 feet.
.FRIDAY...Southwest winds 15 to 25 knots increasing to gales to
45 knots in the afternoon. Waves building to 8 to 11 feet
occasionally to 14 feet.
.FRIDAY NIGHT...West storm force winds to 55 knots veering
northwest after midnight. Heavy freezing spray. Waves building to
12 to 17 feet occasionally to 21 feet, then subsiding to 10 to
14 feet occasionally to 18 feet.
.SATURDAY...Northwest gales to 40 knots diminishing to 15 to
25 knots in the afternoon. Heavy freezing spray in the morning.
Waves subsiding to 2 to 4 feet.
.SATURDAY NIGHT...Northwest winds 10 to 20 knots. Waves building
to 3 to 5 feet occasionally to 7 feet, then subsiding to 2 to
4 feet.
.SUNDAY...Northwest winds 10 to 20 knots becoming west 5 to
15 knots. Waves subsiding to calm to 2 feet, then building to
1 to 3 feet.
.MONDAY...Southwest winds 10 to 20 knots increasing to gales to
35 knots. Freezing spray. Waves building to 8 to 11 feet
occasionally to 14 feet.

Note, wave height forecasts are for ice free areas.

$$

LSZ265-260900-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
400 PM EST Wed Feb 25 2026

...GALE WARNING IN EFFECT UNTIL 7 PM EST THIS EVENING...
...HEAVY FREEZING SPRAY WARNING IN EFFECT UNTIL 7 PM EST THIS
EVENING...

.LATE THIS AFTERNOON...Northwest winds 20 to 30 knots. Heavy
freezing spray. A slight chance of snow showers. Waves 3 to
6 feet occasionally to 8 feet.
.TONIGHT...Northwest winds 15 to 25 knots becoming west 10 to
20 knots late. A slight chance of snow showers. Waves subsiding
to calm to 2 feet.
.THURSDAY...Southwest winds 10 to 20 knots backing south. Snow
likely. Waves calm to 2 feet.
.THURSDAY NIGHT...Southwest winds 10 to 20 knots increasing to
15 to 25 knots late. A slight chance of snow in the evening.
Waves calm to 2 feet.
.FRIDAY...Southwest winds 15 to 25 knots increasing to gales to
40 knots in the afternoon. Waves building to 4 to 7 feet
occasionally to 9 feet.
.FRIDAY NIGHT...West storm force winds to 55 knots veering
northwest after midnight. Heavy freezing spray. Waves building to
10 to 14 feet occasionally to 18 feet, then subsiding to 8 to
11 feet occasionally to 14 feet.
.SATURDAY...Northwest gales to 40 knots diminishing to 20 to
30 knots in the afternoon. Heavy freezing spray in the morning.
Waves subsiding to 3 to 5 feet occasionally to 7 feet.
.SATURDAY NIGHT...Northwest winds 15 to 25 knots. Waves subsiding
to 2 to 4 feet, then building to 3 to 5 feet occasionally to
7 feet.
.SUNDAY...Northwest winds 10 to 20 knots backing southwest. Waves
subsiding to calm to 2 feet, then building to 1 to 3 feet.
.MONDAY...South winds 15 to 25 knots becoming southwest 20 to
30 knots. Waves building to 3 to 6 feet occasionally to 8 feet.

Note, wave height forecasts are for ice free areas.

$$

LSZ266-260900-
Lake Superior East of a line from Manitou Island to Marquette MI
and West of a line from Grand Marais MI to the US/Canadian Border
Beyond 5NM from shore-
400 PM EST Wed Feb 25 2026

...GALE WARNING IN EFFECT UNTIL 7 PM EST THIS EVENING...
...HEAVY FREEZING SPRAY WARNING IN EFFECT UNTIL 1 AM EST
THURSDAY...

.LATE THIS AFTERNOON...Northwest winds 20 to 30 knots. Heavy
freezing spray. A chance of snow showers. Waves 8 to 11 feet
occasionally to 14 feet.
.TONIGHT...Northwest winds 20 to 30 knots diminishing to 15 to
25 knots by midnight, then becoming west 10 to 20 knots late.
Heavy freezing spray in the evening. A chance of snow showers.
Waves subsiding to 2 to 4 feet.
.THURSDAY...Southwest winds 10 to 20 knots becoming south 15 to
25 knots. A chance of snow in the morning, then snow likely in
the afternoon. Waves subsiding to 1 to 3 feet, then building to
2 to 4 feet.
.THURSDAY NIGHT...Southwest winds 15 to 25 knots. A chance of
snow in the evening. Waves 2 to 4 feet.
.FRIDAY...Southwest winds 20 to 30 knots increasing to gales to
45 knots in the afternoon. Waves building to 7 to 10 feet
occasionally to 13 feet.
.FRIDAY NIGHT...West storm force winds to 55 knots veering
northwest after midnight. Heavy freezing spray. Waves building to
17 to 22 feet occasionally to 28 feet, then subsiding to 15 to
20 feet occasionally to 25 feet.
.SATURDAY...Northwest gales to 40 knots diminishing to 20 to
30 knots in the afternoon. Heavy freezing spray. Waves subsiding
to 5 to 8 feet occasionally to 10 feet.
.SATURDAY NIGHT...Northwest winds 20 to 30 knots diminishing to
15 to 25 knots after midnight. Heavy freezing spray. Waves
subsiding to 4 to 7 feet occasionally to 9 feet.
.SUNDAY...Northwest winds 15 to 25 knots becoming west 10 to
20 knots. Waves subsiding to 1 to 3 feet, then building to 3 to
5 feet occasionally to 7 feet.
.MONDAY...South winds 15 to 25 knots becoming southwest gales to
35 knots. Freezing spray. Waves building to 8 to 11 feet
occasionally to 14 feet.

Note, wave height forecasts are for ice free areas.

$$

LSZ267-260900-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
400 PM EST Wed Feb 25 2026

...HEAVY FREEZING SPRAY WARNING IN EFFECT UNTIL 1 AM EST
THURSDAY...

.LATE THIS AFTERNOON...Northwest winds to 30 knots with a few
gale force gusts to 35 knots possible. Heavy freezing spray. Snow
showers likely. Waves 8 to 11 feet occasionally to 14 feet.
.TONIGHT...Northwest winds 20 to 30 knots diminishing to 5 to
15 knots. Heavy freezing spray in the evening. Snow showers
likely in the evening, then a chance of snow showers after
midnight. Waves subsiding to 3 to 5 feet occasionally to 7 feet.
.THURSDAY...Southwest winds 5 to 15 knots becoming south 10 to
20 knots by late morning, then increasing to 15 to 25 knots by
mid afternoon. A chance of snow in the morning, then snow likely
in the afternoon. Waves subsiding to 1 to 3 feet, then building
to 2 to 4 feet.
.THURSDAY NIGHT...South winds 15 to 25 knots becoming southwest
10 to 20 knots by midnight. A chance of snow in the evening.
Waves 2 to 4 feet.
.FRIDAY...South winds 15 to 25 knots increasing to gales to
40 knots in the afternoon. A slight chance of snow showers. A
slight chance of rain showers in the afternoon. Waves building to
5 to 8 feet occasionally to 10 feet.
.FRIDAY NIGHT...West storm force winds to 55 knots veering
northwest after midnight. Heavy freezing spray after midnight.
Waves building to 17 to 22 feet occasionally to 28 feet, then
subsiding to 15 to 20 feet occasionally to 25 feet.
.SATURDAY...Northwest gales to 40 knots diminishing to 20 to
30 knots in the afternoon. Heavy freezing spray. Waves subsiding
to 5 to 8 feet occasionally to 10 feet.
.SATURDAY NIGHT...Northwest winds 15 to 25 knots becoming north
10 to 20 knots after midnight. Heavy freezing spray. Waves
subsiding to 3 to 6 feet occasionally to 8 feet.
.SUNDAY...North winds 5 to 15 knots veering south. Waves
subsiding to 1 to 3 feet, then building to 3 to 5 feet
occasionally to 7 feet.
.MONDAY...South winds 10 to 20 knots increasing to 20 to
30 knots. Freezing spray. Waves subsiding to 2 to 4 feet, then
building to 7 to 10 feet occasionally to 13 feet.

Note, wave height forecasts are for ice free areas.

$$

LSZ261-260300-
MAFOR 2522/
Superior West 11720 12710 11600 11507 12517 11510. Waves 2 to 4
feet subsiding to 1 foot or less tonight. Waves 2 feet or less
Thursday.

Superior North Central...HEAVY FREEZING SPRAY WARNING IN EFFECT...
12730 11720 11710 11610 11510 11417 11427. Waves 3 to 6 feet
subsiding to 1 to 3 feet tonight. Waves 1 to 3 feet Thursday.

Superior South Central...GALE WARNING IN EFFECT...HEAVY FREEZING
SPRAY WARNING IN EFFECT...11742 11732 11730 11620 11610 11510
12427. A chance of snow showers this evening. Waves 5 to 8 feet
subsiding to 2 to 4 feet tonight. Waves 1 to 3 feet Thursday.

Superior East...GALE WARNING IN EFFECT...HEAVY FREEZING SPRAY
WARNING IN EFFECT...12747 11737 11720 11710 11510 11527 11427.
Waves 6 to 10 feet subsiding to 3 to 5 feet tonight. Waves 2 to 4
feet Thursday.

$$

WFO MQT

Experimental modernized open lake forecast is available online at
weather.gov/mqt/glftable

Graphical marine forecasts are available online at:
weather.gov/greatlakes