419
FZUS63 KMQT 250900
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
400 AM EST Tue Nov 25 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 29.8 inch low continues to move closer to the Great Lakes from the
west today, deepening to 29.6 inches by tonight over the Upper
Peninsula. By the time it passes over eastern Lake Superior on
Wednesday, it will have strengthened to 29.3 inches. This low
deepens further to 29.2 inches over Quebec Thursday while 30.5 inch
high pressure builds over the Northern Great Plains in its wake.
This high moves over Lake Superior Friday into the weekend.


LSZ162-252100-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
400 AM EST Tue Nov 25 2025 /300 AM CST Tue Nov 25 2025/

...GALE WARNING IN EFFECT FROM 3 PM EST /2 PM CST/ THIS AFTERNOON
THROUGH THURSDAY MORNING...

.EARLY THIS MORNING...Northeast winds 15 to 25 knots. Waves 2 to
4 feet.
.TODAY...Northeast winds 15 to 25 knots increasing to gales to
35 knots. A chance of rain. A chance of snow in the afternoon.
Waves building to 6 to 9 feet occasionally to 11 feet.
.TONIGHT...Northeast gales to 35 knots becoming north gales to
45 knots by midnight. A slight chance of rain in the evening.
Snow. Waves building to 12 to 17 feet occasionally to 21 feet.
.WEDNESDAY...North gales to 45 knots becoming northwest gales to
40 knots by mid afternoon. Snow. Waves subsiding to 9 to 12 feet
occasionally to 15 feet.
.WEDNESDAY NIGHT...Northwest gales to 40 knots. A chance of snow
showers. Waves subsiding to 5 to 8 feet occasionally to 10 feet.
.THURSDAY...Northwest winds 20 to 30 knots. Waves subsiding to
3 to 6 feet occasionally to 8 feet.
.THURSDAY NIGHT...Northwest winds 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.
.SATURDAY...Northwest winds 5 to 15 knots veering north. A chance
of snow showers. Waves calm to 2 feet.

$$

LSZ263-252100-
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 AM EST Tue Nov 25 2025

...GALE WARNING IN EFFECT FROM THIS EVENING THROUGH THURSDAY
AFTERNOON...

.EARLY THIS MORNING...Northeast winds 10 to 20 knots. Waves 2 to
4 feet.
.TODAY...Northeast winds 10 to 20 knots increasing to 20 to
30 knots. A chance of rain. A slight chance of snow in the
afternoon. Waves building to 6 to 9 feet occasionally to 11 feet.
.TONIGHT...Northeast gales to 40 knots becoming north gales to
45 knots late. Rain in the evening. Snow. Waves building to 15 to
20 feet occasionally to 25 feet.
.WEDNESDAY...North gales to 45 knots. Snow. Waves subsiding 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 9 to 12 feet
occasionally to 15 feet.
.THURSDAY...Northwest gales to 35 knots diminishing to 20 to
30 knots in the afternoon. A chance of snow showers. Waves
subsiding to 5 to 8 feet occasionally to 10 feet.
.THURSDAY NIGHT...Northwest winds 20 to 30 knots diminishing to
15 to 25 knots after midnight. 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.
.SATURDAY...Northwest winds 5 to 15 knots. A chance of snow
showers. Waves calm to 2 feet.

$$

LSZ264-252100-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
400 AM EST Tue Nov 25 2025

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

.EARLY THIS MORNING...Northeast winds 10 to 20 knots. Waves 1 to
3 feet building to 2 to 4 feet.
.TODAY...Northeast winds 10 to 20 knots increasing to 20 to
30 knots. A slight chance of rain. A slight chance of snow in the
afternoon. Waves building to 4 to 7 feet occasionally to 9 feet.
.TONIGHT...Northeast gales to 45 knots. A slight chance of rain
in the evening. Snow. Waves building to 12 to 17 feet
occasionally to 21 feet.
.WEDNESDAY...North gales to 45 knots. Snow. Waves building to
15 to 20 feet occasionally to 25 feet, then subsiding to 12 to
17 feet occasionally to 21 feet.
.WEDNESDAY NIGHT...North gales to 45 knots. Snow showers in the
evening, then a chance of snow showers after midnight. Waves
subsiding to 12 to 17 feet occasionally to 21 feet.
.THURSDAY...Northwest gales to 40 knots. 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 after midnight. A chance of snow showers. Waves
subsiding to 5 to 8 feet occasionally to 10 feet.
.FRIDAY...Northwest winds 15 to 25 knots diminishing to 5 to
15 knots. Waves subsiding to calm to 2 feet.
.SATURDAY...Northwest winds 5 to 15 knots veering north. A chance
of snow showers. Waves calm to 2 feet.

$$

LSZ265-252100-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
400 AM EST Tue Nov 25 2025

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

.EARLY THIS MORNING...Northeast winds 10 to 20 knots. A slight
chance of rain. Waves 1 to 3 feet.
.TODAY...Northeast winds 10 to 20 knots increasing to 20 to
30 knots. A slight chance of rain in the morning, then rain in
the afternoon. Waves building to 3 to 5 feet occasionally to
7 feet.
.TONIGHT...Northeast winds 20 to 30 knots increasing to gales to
40 knots by midnight. Rain. Snow after midnight. Waves building
to 10 to 14 feet occasionally to 18 feet.
.WEDNESDAY...Northeast gales to 45 knots becoming north gales to
45 knots with a few storm force gusts to 50 knots possible. A
slight chance of rain in the morning. Snow. Waves building to
15 to 20 feet occasionally to 25 feet.
.WEDNESDAY NIGHT...North storm force winds to 50 knots backing
northwest after midnight. A slight chance of thunderstorms in the
evening. Snow showers. Waves subsiding to 12 to 17 feet
occasionally to 21 feet.
.THURSDAY...Northwest gales to 45 knots. Snow showers. Waves
subsiding to 9 to 12 feet occasionally to 15 feet.
.THURSDAY NIGHT...Northwest gales to 40 knots. Snow showers in
the evening, then a chance of snow showers after midnight. Waves
subsiding to 5 to 8 feet occasionally to 10 feet.
.FRIDAY...Northwest winds 15 to 25 knots becoming west 10 to
20 knots. A chance of snow showers. Waves subsiding to calm to
2 feet.
.SATURDAY...West winds 10 to 20 knots diminishing to 5 to
15 knots. A chance of snow showers, then snow showers likely.
Waves calm to 2 feet.

$$

LSZ266-252100-
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 AM EST Tue Nov 25 2025

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

.EARLY THIS MORNING...Northeast winds 5 to 15 knots. A slight
chance of rain. Waves 1 to 3 feet.
.TODAY...Northeast winds 10 to 20 knots increasing to 15 to
25 knots by mid afternoon. A slight chance of rain in the
morning, then rain in the afternoon. Waves building to 3 to
6 feet occasionally to 8 feet.
.TONIGHT...Northeast winds 20 to 30 knots becoming east gales to
40 knots by midnight. Rain, possibly mixed with snow. Waves
building to 10 to 14 feet occasionally to 18 feet.
.WEDNESDAY...Northeast gales to 45 knots backing north. Snow,
possibly mixed with rain. Waves building to 15 to 20 feet
occasionally to 25 feet.
.WEDNESDAY NIGHT...North storm force winds to 50 knots. A slight
chance of thunderstorms in the evening. Snow showers. Waves
building to 17 to 22 feet occasionally to 28 feet, then subsiding
to 15 to 20 feet occasionally to 25 feet.
.THURSDAY...North gales to 45 knots backing northwest in the
afternoon. Snow showers. Waves subsiding to 12 to 17 feet
occasionally to 21 feet.
.THURSDAY NIGHT...Northwest gales to 40 knots. Snow showers.
Waves subsiding to 9 to 12 feet occasionally to 15 feet.
.FRIDAY...Northwest winds 20 to 30 knots diminishing to 10 to
20 knots. A chance of snow showers, then snow showers likely.
Waves subsiding to 1 to 3 feet.
.SATURDAY...West winds 5 to 15 knots. Snow showers. Waves
subsiding to calm to 2 feet.

$$

LSZ267-252100-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
400 AM EST Tue Nov 25 2025

...GALE WARNING IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH LATE
THURSDAY NIGHT...

.EARLY THIS MORNING...Northeast winds 5 to 15 knots. A slight
chance of rain. Waves calm to 2 feet.
.TODAY...East winds 5 to 15 knots increasing to 10 to 20 knots by
late morning, then backing northeast by mid afternoon. A chance
of rain in the morning, then rain in the afternoon. Waves
building to 3 to 5 feet occasionally to 7 feet.
.TONIGHT...East winds 15 to 25 knots increasing to 20 to 30 knots
by midnight. Rain. Waves building to 6 to 9 feet occasionally to
11 feet.
.WEDNESDAY...East gales to 40 knots backing north by mid
afternoon. Rain in the morning. Snow. A slight chance of rain in
the afternoon. Waves building to 9 to 12 feet occasionally to
15 feet.
.WEDNESDAY NIGHT...North gales to 45 knots. A slight chance of
rain showers in the evening. Snow showers. Waves building to
15 to 20 feet occasionally to 25 feet.
.THURSDAY...North gales to 45 knots backing northwest in the
afternoon. Snow showers. Waves subsiding to 12 to 17 feet
occasionally to 21 feet.
.THURSDAY NIGHT...Northwest gales to 40 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. Waves subsiding to 1 to 3 feet.
.SATURDAY...West winds 10 to 20 knots backing south. Snow
showers. Waves subsiding to calm to 2 feet.

$$

LSZ261-251500-
MAFOR 2510/
Superior West...GALE WARNING IN EFFECT...13130 11140 11150 12157
11867. A chance of rain this afternoon and evening. Waves 3 to 6
feet building to 5 to 8 feet today. Waves 7 to 10 feet building
to 12 to 16 feet tonight.

Superior North Central...GALE WARNING IN EFFECT...12120 12130
11140 13157. A chance of rain this evening. Waves 2 to 4 feet
building to 3 to 6 feet today. Waves 6 to 10 feet building to 10
to 14 feet tonight.

Superior South Central...GALE WARNING IN EFFECT...11110 12120
12136 11146 12156. Waves 2 to 4 feet building to 3 to 5 feet
today. Waves 5 to 9 feet building to 8 to 12 feet tonight.

Superior East...GALE WARNING IN EFFECT...13120 12136 11246 11256
11257. Waves 1 to 3 feet building to 3 to 6 feet today. Waves 4
to 7 feet building to 8 to 11 feet tonight.

$$

WFO MQT

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weather.gov/mqt/glftable

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weather.gov/greatlakes