094
FZUS63 KMQT 240300
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
1000 PM EST Sun Nov 23 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 30.0 inch ridge was over Lake Superior this evening as a 30.1 inch
high was pushing eastward south of the Great Lakes. This high will
reach the east coast by Monday afternoon with a weak 29.8 inch
trough moving over Lake Superior. Monday night into Tuesday, a 29.8
inch low will organize just west of the Great Lakes, deepening to
29.6 inches Tuesday night over the Michigan Upper Peninsula and
passing over eastern Lake Superior at 29.4 inches Wednesday. This
low deepens further to 29.3 inches over Quebec Thursday while 30.5
inch high pressure builds over the Northern Great Plains. This high
moves over Lake Superior Friday into the weekend.


LSZ162-240900-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
1000 PM EST Sun Nov 23 2025 /900 PM CST Sun Nov 23 2025/

.REST OF TONIGHT...South winds 5 to 15 knots becoming southwest
10 to 20 knots by midnight. Waves calm to 2 feet building to 1 to
3 feet.
.MONDAY...West winds 10 to 20 knots diminishing to 5 to 15 knots.
Waves building to 2 to 4 feet, then subsiding to calm to 2 feet.
.MONDAY NIGHT...North winds 5 to 15 knots veering northeast by
midnight, then increasing to 10 to 20 knots late. A slight chance
of rain showers after midnight. Waves calm to 2 feet.
.TUESDAY...Northeast winds 10 to 20 knots increasing to 15 to
25 knots in the afternoon. A chance of rain showers in the
morning, then rain showers in the afternoon. Waves building to
3 to 5 feet occasionally to 7 feet.
.TUESDAY NIGHT...Northeast winds 20 to 30 knots becoming north
gales to 35 knots after midnight. Rain showers in the evening.
Snow showers. A slight chance of rain showers after midnight.
Waves building to 8 to 11 feet occasionally to 14 feet.
.WEDNESDAY...North gales to 40 knots backing northwest in the
afternoon. Snow showers. Waves subsiding to 6 to 9 feet
occasionally to 11 feet.
.WEDNESDAY NIGHT...Northwest gales to 35 knots diminishing to
20 to 30 knots after midnight. A chance of snow showers. Waves
subsiding to 4 to 7 feet occasionally to 9 feet.
.THURSDAY...Northwest winds 20 to 30 knots diminishing to 15 to
25 knots. Waves subsiding to 1 to 3 feet.
.FRIDAY...Northwest winds 10 to 20 knots diminishing to 5 to
15 knots. Waves subsiding to calm to 2 feet.

$$

LSZ263-240900-
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 Sun Nov 23 2025

.REST OF TONIGHT...South winds 5 to 15 knots increasing to 10 to
20 knots by midnight, then veering southwest late. Waves calm to
2 feet building to 2 to 4 feet.
.MONDAY...West winds 10 to 20 knots diminishing to 5 to 15 knots
by mid afternoon. Waves subsiding to calm to 2 feet.
.MONDAY NIGHT...Northeast winds 5 to 15 knots. A slight chance of
rain showers after midnight. Waves calm to 2 feet.
.TUESDAY...Northeast winds 10 to 20 knots increasing to 15 to
25 knots in the afternoon. A chance of rain showers in the
morning, then rain showers likely in the afternoon. Waves
building to 3 to 5 feet occasionally to 7 feet.
.TUESDAY NIGHT...Northeast winds 20 to 30 knots becoming north
gales to 40 knots after midnight. Rain showers in the evening.
Snow showers. A slight chance of rain showers after midnight.
Waves building to 10 to 14 feet occasionally to 18 feet.
.WEDNESDAY...North gales to 45 knots backing northwest in the
afternoon. Snow showers. Waves building to 12 to 17 feet
occasionally to 21 feet, then subsiding to 10 to 14 feet
occasionally to 18 feet.
.WEDNESDAY NIGHT...Northwest gales to 40 knots. Snow showers
likely in the evening, then a chance of snow showers after
midnight. Waves subsiding to 8 to 11 feet occasionally to
14 feet.
.THURSDAY...Northwest gales to 40 knots diminishing to 20 to
30 knots. 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 5 to
15 knots. Waves subsiding to calm to 2 feet.

$$

LSZ264-240900-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
1000 PM EST Sun Nov 23 2025

.REST OF TONIGHT...South winds 5 to 15 knots increasing to 10 to
20 knots late. Waves calm to 2 feet building to 2 to 4 feet.
.MONDAY...West winds 10 to 20 knots becoming northwest 5 to
15 knots by mid afternoon. Waves subsiding to 1 to 3 feet.
.MONDAY NIGHT...North winds 5 to 15 knots veering northeast by
midnight. Waves subsiding to calm to 2 feet.
.TUESDAY...Northeast winds 10 to 20 knots increasing to 15 to
25 knots in the afternoon. A chance of rain showers. Waves
building to 2 to 4 feet.
.TUESDAY NIGHT...Northeast winds 20 to 30 knots increasing to
gales to 40 knots after midnight. Rain and snow showers. Waves
building to 10 to 14 feet occasionally to 18 feet.
.WEDNESDAY...North gales to 45 knots. Snow showers. Waves
building to 12 to 17 feet occasionally to 21 feet.
.WEDNESDAY NIGHT...North gales to 40 knots backing northwest
after midnight. Snow showers likely in the evening, then a chance
of snow showers after midnight. Waves subsiding to 11 to 15 feet
occasionally to 19 feet.
.THURSDAY...Northwest gales to 40 knots. A 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. Waves subsiding to calm to 2 feet.

$$

LSZ265-240900-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
1000 PM EST Sun Nov 23 2025

.REST OF TONIGHT...South winds 10 to 20 knots increasing to 15 to
25 knots late. Waves calm to 2 feet building to 1 to 3 feet, then
subsiding to calm to 2 feet.
.MONDAY...Southwest winds 15 to 25 knots becoming west 5 to
15 knots by late morning, then veering northwest by mid
afternoon. Waves building to 1 to 3 feet, then subsiding to calm
to 2 feet.
.MONDAY NIGHT...North winds 5 to 15 knots veering northeast by
midnight. A chance of rain showers. Waves calm to 2 feet.
.TUESDAY...Northeast winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon. A chance of rain showers in the
morning, then rain showers likely in the afternoon. Waves
building to 1 to 3 feet.
.TUESDAY NIGHT...Northeast winds 15 to 25 knots increasing to
20 to 30 knots after midnight. Rain showers. Snow showers after
midnight. Waves building to 6 to 9 feet occasionally to 11 feet.
.WEDNESDAY...North gales to 40 knots becoming northwest gales to
45 knots in the afternoon. Snow showers. Waves building to 12 to
17 feet occasionally to 21 feet.
.WEDNESDAY NIGHT...Northwest storm force winds to 50 knots. Snow
showers. Waves 12 to 17 feet occasionally to 21 feet.
.THURSDAY...Northwest gales to 40 knots. Snow showers. Waves
subsiding to 5 to 8 feet occasionally to 10 feet.
.FRIDAY...Northwest winds 20 to 30 knots becoming west 10 to
20 knots. A chance of snow showers. Waves subsiding to calm to
2 feet.

$$

LSZ266-240900-
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 Sun Nov 23 2025

.REST OF TONIGHT...South winds 10 to 20 knots increasing to 15 to
25 knots late. Waves 2 to 4 feet subsiding to 1 to 3 feet, then
building to 3 to 5 feet occasionally to 7 feet.
.MONDAY...Southwest winds 15 to 25 knots becoming west 5 to
15 knots by mid afternoon. Waves building to 3 to 6 feet
occasionally to 8 feet, then subsiding to 2 to 4 feet.
.MONDAY NIGHT...North winds 5 to 15 knots veering east late. A
chance of rain showers. Waves subsiding to calm to 2 feet.
.TUESDAY...Northeast winds 5 to 15 knots becoming east 10 to
20 knots in the afternoon. A chance of rain showers in the
morning, then rain showers in the afternoon. Waves building to
2 to 4 feet.
.TUESDAY NIGHT...East winds 20 to 30 knots increasing to gales to
35 knots after midnight. Rain showers. Snow showers after
midnight. Waves building to 7 to 10 feet occasionally to 13 feet.
.WEDNESDAY...North gales to 40 knots becoming northwest gales to
45 knots in the afternoon. Rain showers in the morning. Snow
showers. Waves building to 12 to 17 feet occasionally to 21 feet.
.WEDNESDAY NIGHT...North gales to 45 knots backing northwest
after midnight. Snow showers. Waves building to 15 to 20 feet
occasionally to 25 feet.
.THURSDAY...Northwest gales to 45 knots. Snow showers. Waves
subsiding to 8 to 11 feet occasionally to 14 feet.
.FRIDAY...Northwest winds 20 to 30 knots diminishing to 10 to
20 knots. A chance of snow showers. Waves subsiding to 2 to
4 feet.

$$

LSZ267-240900-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
1000 PM EST Sun Nov 23 2025

.REST OF TONIGHT...Southwest winds 10 to 20 knots backing south
by midnight, then increasing to 15 to 25 knots late. Waves 2 to
4 feet subsiding to 1 to 3 feet, then building to 3 to 5 feet
occasionally to 7 feet.
.MONDAY...Southwest winds 20 to 30 knots diminishing to 15 to
25 knots by late morning, then becoming west 10 to 20 knots by
mid afternoon. Waves building to 3 to 6 feet occasionally to
8 feet, then subsiding to 1 to 3 feet.
.MONDAY NIGHT...West winds 10 to 20 knots becoming northeast 5 to
15 knots by midnight, then veering east late. A chance of rain
showers. Waves subsiding to calm to 2 feet.
.TUESDAY...East winds 10 to 20 knots. Rain showers. Waves calm to
2 feet.
.TUESDAY NIGHT...East winds 15 to 25 knots increasing to 20 to
30 knots after midnight. Rain showers. Waves building to 3 to
6 feet occasionally to 8 feet.
.WEDNESDAY...South winds 20 to 30 knots becoming west gales to
35 knots in the afternoon. Rain showers. Snow showers in the
afternoon. Waves building to 9 to 12 feet occasionally to
15 feet.
.WEDNESDAY NIGHT...Northwest gales to 45 knots. Snow showers.
Waves building to 12 to 17 feet occasionally to 21 feet.
.THURSDAY...Northwest gales to 45 knots. Snow showers. Waves
subsiding to 8 to 11 feet occasionally to 14 feet.
.FRIDAY...Northwest winds 20 to 30 knots diminishing to 10 to
20 knots. Snow showers likely. Waves subsiding to 2 to 4 feet.

$$

LSZ261-240900-
MAFOR 2404/
Superior West 11420 12520 11620 12610 11700 11100. Waves 1 to 3
feet overnight. Waves 2 to 4 feet subsiding to 1 to 3 feet
Monday. Waves 2 feet or less Monday evening.

Superior North Central 11410 11420 11530 11630 11620 11720 11710
11810. Waves 2 to 4 feet.

Superior South Central 12420 11530 11520 11620 11610 11700 11800.
Waves 1 to 3 feet building to 2 to 4 feet overnight. Waves 2 to 4
feet subsiding to 1 to 3 feet Monday. Waves 2 feet or less Monday
evening.

Superior East 11420 11430 11440 11540 11530 11620 11610 11700.
Waves 2 to 3 feet building to 3 to 5 feet overnight. Waves 3 to 6
feet Monday. Waves 2 to 3 feet Monday evening.

$$

WFO MQT

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weather.gov/mqt/glftable

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