913
FZUS63 KMQT 090301
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
1001 PM EST Sat Nov 8 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 over Lake Superior this evening strengthens to
30.3 inches through Sunday night as 30.7 inch high pressure builds
over the Great Plains. The ridge weakens to 29.9 inches through
Monday ahead of a 29.4 inch trough moving across the lake late
Tuesday into Wednesday. By Wednesday night the lake will be between
30.1 inch ridging over the Plains and a deep 28.7 inch low over
Hudson Bay.


LSZ162-090900-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
1001 PM EST Sat Nov 8 2025 /901 PM CST Sat Nov 8 2025/

.REST OF TONIGHT...North winds 15 to 25 knots increasing to 20 to
30 knots by midnight, then becoming northwest 15 to 25 knots
late. Isolated snow showers after midnight. Waves 2 to 4 feet.
.SUNDAY...Northwest winds 15 to 25 knots becoming north 20 to
30 knots. Scattered snow showers. Waves building to 3 to 6 feet
occasionally to 8 feet.
.SUNDAY NIGHT...North winds 15 to 25 knots. Isolated snow
showers. Waves subsiding to 2 to 4 feet.
.MONDAY...Northwest winds 15 to 25 knots diminishing to 10 to
20 knots in the afternoon. Waves subsiding to calm to 2 feet.
.MONDAY NIGHT...West winds 10 to 20 knots backing southwest after
midnight. A slight chance of snow showers after midnight. Waves
building to 1 to 3 feet.
.TUESDAY...Southwest winds 15 to 25 knots becoming west 20 to
30 knots in the afternoon. Waves building to 3 to 6 feet
occasionally to 8 feet, then subsiding to 2 to 4 feet.
.TUESDAY NIGHT...West winds 20 to 30 knots veering northwest
after midnight. Waves building to 3 to 6 feet occasionally to
8 feet.
.WEDNESDAY...Northwest winds 20 to 30 knots becoming west gales
to 35 knots. Waves building to 5 to 8 feet occasionally to
10 feet, then subsiding to 3 to 6 feet occasionally to 8 feet.
.THURSDAY...West winds 20 to 30 knots becoming northwest 10 to
20 knots. Waves subsiding to calm to 2 feet.

$$

LSZ263-090900-
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-
1001 PM EST Sat Nov 8 2025

.REST OF TONIGHT...North winds 10 to 20 knots increasing to 15 to
25 knots by midnight, then becoming northwest 10 to 20 knots
late. Isolated snow showers. Waves 2 to 4 feet building to 3 to
5 feet occasionally to 7 feet, then subsiding to 2 to 4 feet.
.SUNDAY...Northwest winds 15 to 25 knots veering north. Scattered
snow showers. Waves building to 3 to 6 feet occasionally to
8 feet.
.SUNDAY NIGHT...North winds 15 to 25 knots increasing to 20 to
30 knots late. Scattered snow showers. Waves building to 4 to
7 feet occasionally to 9 feet.
.MONDAY...North winds 20 to 30 knots becoming northwest 10 to
20 knots in the afternoon. Isolated snow showers in the morning.
Waves subsiding to 1 to 3 feet.
.MONDAY NIGHT...West winds 5 to 15 knots becoming southwest 10 to
20 knots after midnight. Waves subsiding to calm to 2 feet, then
building to 1 to 3 feet.
.TUESDAY...Southwest winds 20 to 30 knots veering west in the
afternoon. Waves building to 4 to 7 feet occasionally to 9 feet.
.TUESDAY NIGHT...West winds 20 to 30 knots veering northwest
after midnight. Waves subsiding to 3 to 6 feet occasionally to
8 feet, then building to 6 to 9 feet occasionally to 11 feet.
.WEDNESDAY...Northwest gales to 40 knots. Waves building to 8 to
12 feet occasionally to 15 feet.
.THURSDAY...West gales to 35 knots becoming northwest 20 to
30 knots. Waves subsiding to 1 to 3 feet.

$$

LSZ264-090900-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
1001 PM EST Sat Nov 8 2025

.REST OF TONIGHT...North winds 10 to 20 knots backing northwest
late. Isolated snow showers. Waves 2 to 4 feet.
.SUNDAY...Northwest winds 10 to 20 knots veering north. Scattered
snow showers. Waves subsiding to 1 to 3 feet, then building to
2 to 4 feet.
.SUNDAY NIGHT...North winds 15 to 25 knots becoming northwest
20 to 30 knots late. Scattered snow showers. Waves building to
4 to 7 feet occasionally to 9 feet.
.MONDAY...North winds 20 to 30 knots becoming northwest 15 to
25 knots in the afternoon. Scattered snow showers. Waves building
to 6 to 9 feet occasionally to 11 feet, then subsiding to 3 to
5 feet occasionally to 7 feet.
.MONDAY NIGHT...Northwest winds 10 to 20 knots backing southwest
after midnight. Waves subsiding to calm to 2 feet, then building
to 1 to 3 feet.
.TUESDAY...Southwest winds 20 to 30 knots. A chance of rain
showers, possibly mixed with snow. Waves building to 4 to 7 feet
occasionally to 9 feet.
.TUESDAY NIGHT...West winds 15 to 25 knots becoming northwest
20 to 30 knots after midnight. A chance of rain showers. Waves
building to 6 to 9 feet occasionally to 11 feet.
.WEDNESDAY...Northwest gales to 40 knots. Waves building to 8 to
12 feet occasionally to 15 feet.
.THURSDAY...West gales to 40 knots becoming northwest 20 to
30 knots. Waves building to 10 to 14 feet occasionally to
18 feet, then subsiding to 2 to 4 feet.

$$

LSZ265-090900-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
1001 PM EST Sat Nov 8 2025

.REST OF TONIGHT...North winds 15 to 25 knots. Scattered snow
showers late in the evening, then numerous snow showers after
midnight. Waves 2 to 4 feet building to 3 to 5 feet occasionally
to 7 feet.
.SUNDAY...Northwest winds 15 to 25 knots veering northeast by mid
afternoon. Snow showers in the morning, then scattered snow
showers in the afternoon. Waves subsiding to 2 to 4 feet, then
building to 3 to 5 feet occasionally to 7 feet.
.SUNDAY NIGHT...North winds 15 to 25 knots becoming northwest
20 to 30 knots late. Snow showers. Waves building to 3 to 6 feet
occasionally to 8 feet.
.MONDAY...North gales to 35 knots becoming northwest 20 to
30 knots in the afternoon. Snow showers in the morning, then
scattered snow showers in the afternoon. Waves building to 5 to
8 feet occasionally to 10 feet, then subsiding to 3 to 6 feet
occasionally to 8 feet.
.MONDAY NIGHT...Northwest winds 15 to 25 knots becoming west
10 to 20 knots after midnight. A chance of snow showers. Waves
subsiding to calm to 2 feet.
.TUESDAY...Southwest winds 15 to 25 knots increasing to 20 to
30 knots in the afternoon. A chance of snow showers. A chance of
rain showers in the afternoon. Waves building to 1 to 3 feet.
.TUESDAY NIGHT...West winds 20 to 30 knots veering northwest
after midnight. Rain showers likely. Waves building to 5 to
8 feet occasionally to 10 feet.
.WEDNESDAY...Northwest gales to 40 knots. Rain showers likely,
then a chance of rain showers, possibly mixed with snow. Waves
building to 7 to 11 feet occasionally to 14 feet.
.THURSDAY...West gales to 40 knots becoming northwest gales to
35 knots. Waves subsiding to calm to 2 feet.

$$

LSZ266-090900-
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-
1001 PM EST Sat Nov 8 2025

.REST OF TONIGHT...North winds 15 to 25 knots increasing to 20 to
30 knots by midnight, then diminishing to 15 to 25 knots late.
Snow showers. Waves 3 to 6 feet occasionally to 8 feet, then
subsiding to 3 to 5 feet occasionally to 7 feet.
.SUNDAY...North winds 15 to 25 knots veering northeast. Scattered
snow showers. Waves subsiding to 2 to 4 feet, then building to
3 to 5 feet occasionally to 7 feet.
.SUNDAY NIGHT...North winds 15 to 25 knots increasing to 20 to
30 knots late. Scattered snow showers in the evening, then
numerous snow showers after midnight. Waves building to 4 to
7 feet occasionally to 9 feet.
.MONDAY...North winds 20 to 30 knots. Snow showers. Waves
building to 5 to 9 feet occasionally to 11 feet.
.MONDAY NIGHT...Northwest winds 15 to 25 knots becoming west
10 to 20 knots after midnight. Snow showers likely in the
evening. A chance of snow showers after midnight. Waves subsiding
to 1 to 3 feet.
.TUESDAY...Southwest winds 15 to 25 knots increasing to 20 to
30 knots in the afternoon. A chance of snow showers in the
morning, then snow showers likely, possibly mixed with rain
showers in the afternoon. Waves building to 3 to 6 feet
occasionally to 8 feet.
.TUESDAY NIGHT...West winds 20 to 30 knots veering northwest
after midnight. Rain showers. Waves building to 7 to 10 feet
occasionally to 13 feet.
.WEDNESDAY...Northwest gales to 40 knots. Rain showers. Waves
building to 12 to 17 feet occasionally to 21 feet, then subsiding
to 10 to 14 feet occasionally to 18 feet.
.THURSDAY...Northwest gales to 40 knots. A chance of rain and
snow showers. Waves building to 11 to 15 feet occasionally to
19 feet, then subsiding to 3 to 6 feet occasionally to 8 feet.

$$

LSZ267-090900-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
1001 PM EST Sat Nov 8 2025

.REST OF TONIGHT...North winds 10 to 20 knots increasing to 15 to
25 knots by midnight. Snow showers. Waves 2 to 4 feet building to
3 to 5 feet occasionally to 7 feet, then subsiding to 2 to
4 feet.
.SUNDAY...Northeast winds 15 to 25 knots. Isolated snow showers.
Waves 2 to 4 feet.
.SUNDAY NIGHT...Northeast winds 15 to 25 knots backing north by
midnight. Scattered snow showers. Waves 2 to 4 feet.
.MONDAY...North winds 15 to 25 knots increasing to 20 to 30 knots
in the afternoon. Snow showers. Waves building to 4 to 7 feet
occasionally to 9 feet.
.MONDAY NIGHT...North winds 15 to 25 knots becoming northwest
10 to 20 knots after midnight. Snow showers in the evening, then
a chance of snow showers after midnight. Waves subsiding to 2 to
4 feet.
.TUESDAY...Southwest winds 15 to 25 knots increasing to 20 to
30 knots in the afternoon. A chance of snow showers in the
morning, then rain showers, possibly mixed with snow in the
afternoon. Waves subsiding to 1 to 3 feet, then building to 3 to
6 feet occasionally to 8 feet.
.TUESDAY NIGHT...Southwest winds 20 to 30 knots veering northwest
after midnight. Rain showers. Waves building to 6 to 9 feet
occasionally to 11 feet.
.WEDNESDAY...Northwest gales to 35 knots. Rain showers. Snow
showers. Waves building to 12 to 17 feet occasionally to 21 feet,
then subsiding to 10 to 14 feet occasionally to 18 feet.
.THURSDAY...Northwest gales to 35 knots diminishing to 20 to
30 knots. Rain showers, possibly mixed with snow, then a chance
of rain and snow showers. Waves building to 11 to 15 feet
occasionally to 19 feet, then subsiding to 3 to 6 feet
occasionally to 8 feet.

$$

LSZ261-090900-
MAFOR 0904/
Superior West 11830 11720 12730 19737 11830 19837 11840 12830.
Waves 2 to 4 feet overnight. Waves 2 to 4 feet building to 3 to 5
feet Sunday. Waves 3 to 5 feet Sunday evening.

Superior North Central 11820 19827 12720 19727 11820 19827 11827
11120 19127 12830 19837. Waves 2 to 4 feet overnight and Sunday.
Waves 3 to 5 feet Sunday evening.

Superior South Central 12837 12827 11127 12130 19137 11837. Waves
3 to 5 feet overnight. Waves 3 to 5 feet subsiding to 2 to 4 feet
Sunday. Waves 2 to 4 feet building to 3 to 5 feet Sunday evening.

Superior East 11830 19837 12820 19827 12120 19127 11130 19137
11130 11130 19137. Waves 3 to 5 feet.

$$

WFO MQT

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weather.gov/mqt/glftable

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weather.gov/greatlakes