598
FZUS63 KMQT 270300
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
1000 PM EST Wed Nov 26 2025

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 29.4 inch low over the Straits of Mackinac will shift east into
Ontario tonight and then into Quebec on Thanksgiving. Meanwhile, a
30.6 inch high over the Canadian Prairies weakens slightly to 30.5
inches as it moves into the Mississippi River Valley through Friday,
with 30.3 inch high pressure persisting over Lake Superior Friday
through Saturday. A 29.7 inch low over the Southern Plains Saturday
morning will track into Lower Michigan by Sunday morning, resulting
in 30.0 inch troughing over Lake Superior. A 30.4 inch high then
rebuilds over the Great Lakes on Monday.


LSZ162-270900-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
1000 PM EST Wed Nov 26 2025 /900 PM CST Wed Nov 26 2025/

...GALE WARNING IN EFFECT UNTIL 7 AM EST /6 AM CST/ THURSDAY...

.REST OF TONIGHT...Northwest gales to 40 knots. A slight chance
of snow. Waves 8 to 11 feet occasionally to 14 feet subsiding to
6 to 9 feet occasionally to 11 feet.
.THURSDAY...Northwest gales to 35 knots diminishing to 20 to
30 knots. A chance of snow showers. Waves subsiding to 3 to
6 feet occasionally to 8 feet.
.THURSDAY NIGHT...Northwest winds 20 to 30 knots diminishing to
15 to 25 knots by midnight. A chance of snow showers in the
evening. Waves subsiding to 2 to 4 feet.
.FRIDAY...Northwest winds 10 to 20 knots diminishing to 5 to
15 knots in the afternoon. A slight chance of snow showers in the
morning. Waves subsiding to calm to 2 feet.
.FRIDAY NIGHT...Northwest winds 5 to 15 knots veering north after
midnight. A slight chance of snow showers after midnight. Waves
calm to 2 feet.
.SATURDAY...Northeast winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon. A chance of snow in the morning, then
snow likely in the afternoon. Waves calm to 2 feet.
.SATURDAY NIGHT...North winds 10 to 20 knots increasing to 15 to
25 knots after midnight. A chance of snow. Waves building to 2 to
4 feet.
.SUNDAY...Northwest winds 15 to 25 knots diminishing to 10 to
20 knots. Waves subsiding to calm to 2 feet.
.MONDAY...West winds 15 to 25 knots. Waves building to 2 to
4 feet, then subsiding to calm to 2 feet.

$$

LSZ263-270900-
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-
1000 PM EST Wed Nov 26 2025

...GALE WARNING IN EFFECT UNTIL 10 AM EST THURSDAY...

.REST OF TONIGHT...North gales to 40 knots backing northwest
late. A chance of snow. Waves 11 to 15 feet occasionally to
19 feet subsiding to 9 to 12 feet occasionally to 15 feet.
.THURSDAY...Northwest gales to 35 knots diminishing to 20 to
30 knots by mid afternoon. A chance of snow showers. Waves
subsiding to 6 to 9 feet occasionally to 11 feet.
.THURSDAY NIGHT...Northwest winds 20 to 30 knots diminishing to
15 to 25 knots late. A chance of snow showers. Waves subsiding to
3 to 6 feet occasionally to 8 feet.
.FRIDAY...Northwest winds 15 to 25 knots diminishing to 10 to
20 knots in the afternoon. A slight chance of snow showers in the
morning. Waves subsiding to calm to 2 feet.
.FRIDAY NIGHT...Northwest winds 5 to 15 knots. A slight chance of
snow showers after midnight. Waves calm to 2 feet.
.SATURDAY...North winds 5 to 15 knots veering northeast in the
afternoon. A chance of snow. Waves calm to 2 feet.
.SATURDAY NIGHT...Northeast winds 10 to 20 knots becoming north
15 to 25 knots after midnight. Snow likely in the evening, then a
chance of snow after midnight. Waves building to 3 to 6 feet
occasionally to 8 feet.
.SUNDAY...Northwest winds 20 to 30 knots diminishing to 15 to
25 knots. A chance of snow. Waves subsiding to 2 to 4 feet.
.MONDAY...West winds 20 to 30 knots. Waves building to 3 to
6 feet occasionally to 8 feet.

$$

LSZ264-270900-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
1000 PM EST Wed Nov 26 2025

...GALE WARNING IN EFFECT THROUGH THURSDAY EVENING...

.REST OF TONIGHT...North gales to 45 knots. Snow late in the
evening, then a chance of snow after midnight. Waves 15 to
20 feet occasionally to 25 feet subsiding to 12 to 17 feet
occasionally to 21 feet.
.THURSDAY...North gales to 40 knots becoming northwest gales to
35 knots by mid afternoon. A chance of snow showers. Waves
subsiding to 9 to 12 feet occasionally to 15 feet.
.THURSDAY NIGHT...Northwest gales to 35 knots diminishing to
20 to 30 knots late. A slight chance of snow showers. Waves
subsiding to 5 to 8 feet occasionally to 10 feet.
.FRIDAY...Northwest winds 20 to 30 knots diminishing to 10 to
20 knots in the afternoon. A slight chance of snow showers. Waves
subsiding to 2 to 4 feet.
.FRIDAY NIGHT...Northwest winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. Waves subsiding to calm to 2 feet.
.SATURDAY...Northwest winds 5 to 15 knots veering north in the
afternoon. A chance of snow. Waves calm to 2 feet.
.SATURDAY NIGHT...Northeast winds 10 to 20 knots becoming north
20 to 30 knots after midnight. A chance of snow. Waves building
to 3 to 6 feet occasionally to 8 feet.
.SUNDAY...Northwest winds 20 to 30 knots. A chance of snow. Waves
building to 4 to 7 feet occasionally to 9 feet, then subsiding to
3 to 5 feet occasionally to 7 feet.
.MONDAY...West winds 20 to 30 knots diminishing to 15 to
25 knots. Waves building to 3 to 6 feet occasionally to 8 feet.

$$

LSZ265-270900-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
1000 PM EST Wed Nov 26 2025

...STORM WARNING IN EFFECT UNTIL 6 AM EST THURSDAY...
...GALE WARNING IN EFFECT FROM 6 AM EST THURSDAY THROUGH LATE
THURSDAY NIGHT...

.REST OF TONIGHT...North storm force winds to 50 knots backing
northwest late. Snow. Waves 17 to 22 feet occasionally to 28 feet
subsiding to 15 to 20 feet occasionally to 25 feet.
.THURSDAY...Northwest gales to 45 knots. Snow showers. Waves
subsiding to 10 to 14 feet occasionally to 18 feet.
.THURSDAY NIGHT...Northwest gales to 40 knots. Snow showers
likely in the evening, then a chance of snow showers after
midnight. Waves subsiding to 6 to 9 feet occasionally to 11 feet.
.FRIDAY...Northwest winds 20 to 30 knots. A chance of snow
showers. Waves subsiding to 2 to 4 feet.
.FRIDAY NIGHT...Northwest winds 10 to 20 knots becoming west 5 to
15 knots after midnight. A slight chance of snow showers. Waves
subsiding to calm to 2 feet.
.SATURDAY...West winds 5 to 15 knots becoming northeast 10 to
20 knots in the afternoon. Snow likely in the afternoon. Waves
calm to 2 feet.
.SATURDAY NIGHT...Northeast winds 10 to 20 knots becoming north
15 to 25 knots after midnight. Snow. Waves building to 2 to
4 feet.
.SUNDAY...Northwest winds 20 to 30 knots. Snow likely, then a
chance of snow showers. Waves building to 5 to 8 feet
occasionally to 10 feet, then subsiding to 2 to 4 feet.
.MONDAY...West winds 15 to 25 knots backing southwest. A chance
of snow showers. Waves subsiding to 1 to 3 feet.

$$

LSZ266-270900-
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-
1000 PM EST Wed Nov 26 2025

...STORM WARNING IN EFFECT UNTIL 6 AM EST THURSDAY...
...GALE WARNING IN EFFECT FROM 6 AM EST THURSDAY THROUGH LATE
THURSDAY NIGHT...

.REST OF TONIGHT...North storm force winds to 50 knots. Snow.
Waves 17 to 22 feet occasionally to 28 feet subsiding to 17 to
22 feet occasionally to 28 feet.
.THURSDAY...North storm force winds to 50 knots diminishing to
gales to 45 knots by late morning, then backing northwest by mid
afternoon. Snow showers. Waves subsiding to 15 to 20 feet
occasionally to 25 feet.
.THURSDAY NIGHT...Northwest gales to 40 knots. Snow showers.
Waves subsiding to 9 to 12 feet occasionally to 15 feet.
.FRIDAY...Northwest gales to 35 knots diminishing to 20 to
30 knots in the afternoon. Snow showers likely in the morning,
then a chance of snow showers in the afternoon. Waves subsiding
to 4 to 7 feet occasionally to 9 feet.
.FRIDAY NIGHT...Northwest winds 15 to 25 knots diminishing to
5 to 15 knots after midnight. A chance of snow showers. Waves
subsiding to 1 to 3 feet.
.SATURDAY...West winds 5 to 15 knots becoming north 10 to
20 knots in the afternoon. Snow. Waves subsiding to calm to
2 feet.
.SATURDAY NIGHT...East winds 10 to 20 knots becoming northeast
15 to 25 knots after midnight. Snow. Waves building to 3 to
5 feet occasionally to 7 feet.
.SUNDAY...North winds 20 to 30 knots backing northwest. Snow.
Waves building to 7 to 10 feet occasionally to 13 feet, then
subsiding to 4 to 7 feet occasionally to 9 feet.
.MONDAY...West winds 15 to 25 knots backing southwest. A chance
of snow showers. Waves subsiding to 3 to 5 feet occasionally to
7 feet.

$$

LSZ267-270900-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
1000 PM EST Wed Nov 26 2025

...GALE WARNING IN EFFECT THROUGH LATE THURSDAY NIGHT...

.REST OF TONIGHT...North gales to 45 knots increasing to gales to
45 knots with a few storm force gusts to 50 knots possible late.
Snow. Waves 11 to 15 feet occasionally to 19 feet building to
15 to 20 feet occasionally to 25 feet.
.THURSDAY...North gales to 45 knots. Snow showers. Waves
subsiding to 12 to 17 feet occasionally to 21 feet.
.THURSDAY NIGHT...North gales to 40 knots becoming northwest
gales to 35 knots late. Snow showers in the evening, then a
chance of snow showers after midnight. Waves subsiding to 8 to
11 feet occasionally to 14 feet.
.FRIDAY...Northwest gales to 35 knots diminishing to 20 to
30 knots in the afternoon. A chance of snow showers in the
morning, then snow showers likely in the afternoon. Waves
subsiding to 4 to 7 feet occasionally to 9 feet.
.FRIDAY NIGHT...Northwest winds 15 to 25 knots diminishing to
10 to 20 knots after midnight. A chance of snow showers in the
evening, then snow showers likely after midnight. Waves subsiding
to 1 to 3 feet.
.SATURDAY...West winds 10 to 20 knots backing southwest in the
afternoon. Snow. Waves subsiding to calm to 2 feet.
.SATURDAY NIGHT...Southeast winds 10 to 20 knots backing east
after midnight. Snow. Waves building to 1 to 3 feet.
.SUNDAY...North winds 20 to 30 knots becoming northwest 15 to
25 knots. Snow. Waves building to 6 to 9 feet occasionally to
11 feet, then subsiding to 4 to 7 feet occasionally to 9 feet.
.MONDAY...West winds 15 to 25 knots backing southwest. Snow
showers likely. Waves subsiding to 3 to 5 feet occasionally to
7 feet.

$$

LSZ261-270900-
MAFOR 2704/
Superior West...GALE WARNING IN EFFECT...13750 14740 11740. A
chance of snow showers Thursday. Waves 7 to 11 feet overnight.
Waves 5 to 9 feet subsiding to 4 to 7 feet Thursday. Waves 4 to 7
feet subsiding to 3 to 6 feet Thursday evening.

Superior North Central...GALE WARNING IN EFFECT...12867 11860
14750 11750. A chance of snow showers Thursday. Waves 13 to 17
feet overnight. Waves 12 to 16 feet subsiding to 10 to 14 feet
Thursday. Waves 8 to 12 feet Thursday evening.

Superior South Central...STORM WARNING IN EFFECT...11877 14767
13757. Waves 16 to 21 feet subsiding to 15 to 20 feet overnight.
Waves 14 to 19 feet subsiding to 13 to 17 feet Thursday. Waves 12
to 16 feet subsiding to 10 to 14 feet Thursday evening.

Superior East...STORM WARNING IN EFFECT...14867 11857 11757
12857. Waves 12 to 16 feet building to 14 to 18 feet overnight.
Waves 13 to 18 feet Thursday. Waves 11 to 16 feet Thursday
evening.

$$

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