693
FZUS63 KMQT 091501
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
1001 AM EST Sun Nov 9 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...

Ridging builds over Lake Superior to 30.3 inches by this evening as
30.7 inch high pressure builds over the Great Plains. The ridge
weakens to 29.9 inches by Monday night ahead of a 29.4 inch trough
that`s expected to move across the lake Tuesday night into
Wednesday. By Wednesday night, the lake will be between 30.1 inch
ridging over the Plains and a deep 28.7 inch low east of Hudson Bay.
Ridging builds to 30.1 inches over the lake on Thursday.


LSZ162-092100-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
1001 AM EST Sun Nov 9 2025 /901 AM CST Sun Nov 9 2025/

.REST OF TODAY...Northwest winds 15 to 25 knots veering north by
late morning, then increasing to 20 to 30 knots by mid afternoon.
A slight chance of snow showers. Waves 2 to 4 feet building to
3 to 5 feet occasionally to 7 feet.
.TONIGHT...North winds 20 to 30 knots diminishing to 15 to
25 knots by midnight. Waves building to 3 to 6 feet occasionally
to 8 feet, then subsiding to 2 to 4 feet.
.MONDAY...North winds 15 to 25 knots becoming northwest 10 to
20 knots by late morning, then backing west by mid afternoon.
Waves subsiding to calm to 2 feet.
.MONDAY NIGHT...West winds 10 to 20 knots becoming southwest
15 to 25 knots after midnight. A slight chance of snow showers
after midnight. Waves building to 2 to 4 feet.
.TUESDAY...Southwest winds 20 to 30 knots veering west in the
afternoon. A slight chance of snow showers in the morning. Waves
building to 3 to 6 feet occasionally to 8 feet.
.TUESDAY NIGHT...West winds 20 to 30 knots. Waves subsiding to
2 to 4 feet, then building to 3 to 6 feet occasionally to 8 feet.
.WEDNESDAY...Northwest winds 20 to 30 knots becoming west 15 to
25 knots. Waves subsiding to 2 to 4 feet.
.THURSDAY...West winds 15 to 25 knots becoming northwest 5 to
15 knots. Waves subsiding to calm to 2 feet.

$$

LSZ263-092100-
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 AM EST Sun Nov 9 2025

.REST OF TODAY...North winds 15 to 25 knots. A chance of snow
showers. Waves 3 to 5 feet occasionally to 7 feet subsiding to
2 to 4 feet, then building to 3 to 5 feet occasionally to 7 feet.
.TONIGHT...North winds 15 to 25 knots. A slight chance of snow
showers. Waves building to 3 to 6 feet occasionally to 8 feet.
.MONDAY...North winds 20 to 30 knots becoming northwest 15 to
25 knots by late morning, then diminishing to 10 to 20 knots by
mid afternoon. A slight chance of rain and snow showers in the
morning. Waves building to 4 to 7 feet occasionally to 9 feet,
then subsiding to 1 to 3 feet.
.MONDAY NIGHT...West winds 5 to 15 knots becoming southwest 15 to
25 knots after midnight. Waves subsiding to calm to 2 feet, then
building to 2 to 4 feet.
.TUESDAY...Southwest winds 20 to 30 knots veering west in the
afternoon. A chance of rain and snow showers. Waves building to
5 to 8 feet occasionally to 10 feet.
.TUESDAY NIGHT...West gales to 35 knots becoming northwest 20 to
30 knots after midnight. Waves building to 5 to 9 feet
occasionally to 11 feet.
.WEDNESDAY...Northwest gales to 35 knots backing west. Waves
subsiding to 3 to 5 feet occasionally to 7 feet.
.THURSDAY...West winds 20 to 30 knots becoming northwest 10 to
20 knots. Waves building to 5 to 8 feet occasionally to 10 feet,
then subsiding to calm to 2 feet.

$$

LSZ264-092100-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
1001 AM EST Sun Nov 9 2025

.REST OF TODAY...North winds 5 to 15 knots increasing to 10 to
20 knots by mid afternoon. A chance of snow showers. Waves 1 to
3 feet.
.TONIGHT...North winds 15 to 25 knots increasing to 20 to
30 knots late. A chance of snow showers. Waves building to 3 to
5 feet occasionally to 7 feet, then subsiding to 2 to 4 feet.
.MONDAY...North winds 20 to 30 knots diminishing to 15 to
25 knots by late morning, then becoming northwest 10 to 20 knots
by mid afternoon. A chance of snow showers. Waves building to
5 to 8 feet occasionally to 10 feet, then subsiding to 2 to
4 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 2 to 4 feet.
.TUESDAY...Southwest winds 20 to 30 knots veering west in the
afternoon. A chance of rain showers, possibly mixed with snow.
Waves building to 5 to 8 feet occasionally to 10 feet.
.TUESDAY NIGHT...West winds 20 to 30 knots becoming northwest
gales to 35 knots after midnight. A chance of rain showers. Waves
building to 6 to 9 feet occasionally to 11 feet.
.WEDNESDAY...Northwest gales to 35 knots. Waves subsiding to 5 to
8 feet occasionally to 10 feet, then building to 6 to 9 feet
occasionally to 11 feet.
.THURSDAY...West gales to 35 knots becoming northwest 15 to
25 knots. Waves building to 6 to 9 feet occasionally to 11 feet,
then subsiding to 1 to 3 feet.

$$

LSZ265-092100-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
1001 AM EST Sun Nov 9 2025

.REST OF TODAY...North winds 15 to 25 knots veering northeast.
Snow showers late in the morning, then a chance of snow showers
in the afternoon. Waves 3 to 5 feet occasionally to 7 feet.
.TONIGHT...North winds 15 to 25 knots increasing to 20 to
30 knots late. A chance of snow showers in the evening, then snow
showers likely after midnight. Waves subsiding to 2 to 4 feet,
then building to 3 to 6 feet occasionally to 8 feet.
.MONDAY...North winds to 30 knots with a few gale force gusts to
35 knots possible diminishing to 20 to 30 knots by late morning,
then backing northwest by mid afternoon. Snow showers in the
morning, then a chance of 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 southwest
10 to 20 knots after midnight. A slight chance of snow showers in
the evening. 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 2 to 4 feet.
.TUESDAY NIGHT...West winds 20 to 30 knots increasing to gales to
35 knots after midnight. Rain showers likely. Waves building to
4 to 8 feet occasionally to 10 feet.
.WEDNESDAY...Northwest gales to 40 knots. Rain showers likely,
then a chance of rain showers. Waves building to 5 to 8 feet
occasionally to 10 feet, then subsiding to 3 to 6 feet
occasionally to 8 feet.
.THURSDAY...West gales to 35 knots becoming northwest 15 to
25 knots. Waves subsiding to calm to 2 feet.

$$

LSZ266-092100-
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 AM EST Sun Nov 9 2025

.REST OF TODAY...North winds 15 to 25 knots veering northeast. A
chance of snow showers. Waves 3 to 5 feet occasionally to 7 feet.
.TONIGHT...Northeast winds 15 to 25 knots backing north by
midnight. A chance of snow showers. Waves subsiding to 2 to
4 feet, then building to 3 to 6 feet occasionally to 8 feet.
.MONDAY...North winds 20 to 30 knots. Snow showers. Waves
building to 4 to 8 feet occasionally to 10 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 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 rain showers, possibly mixed with snow in the
afternoon. Waves building to 5 to 8 feet occasionally to 10 feet.
.TUESDAY NIGHT...West winds 20 to 30 knots becoming northwest
gales to 35 knots 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 9 to 12 feet occasionally to 15 feet, then 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 rain showers, possibly mixed with snow.
Waves building to 9 to 12 feet occasionally to 15 feet, then
subsiding to 3 to 5 feet occasionally to 7 feet.

$$

LSZ267-092100-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
1001 AM EST Sun Nov 9 2025

.REST OF TODAY...Northeast winds 15 to 25 knots increasing to
20 to 30 knots by mid afternoon. A slight chance of snow showers
late in the morning. Waves 2 to 4 feet building to 3 to 5 feet
occasionally to 7 feet, then subsiding to 2 to 4 feet.
.TONIGHT...Northeast winds 20 to 30 knots becoming north 15 to
25 knots by midnight. A slight chance of snow showers after
midnight. Waves subsiding to 1 to 3 feet.
.MONDAY...North winds 15 to 25 knots increasing to 20 to
30 knots. Snow showers. Waves building to 3 to 6 feet
occasionally to 8 feet.
.MONDAY NIGHT...North winds 15 to 25 knots becoming west 10 to
20 knots after midnight. Snow showers likely in the evening, then
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 rain showers, possibly mixed with snow 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 35 knots. Rain showers. Waves
building to 9 to 12 feet occasionally to 15 feet, then subsiding
to 7 to 10 feet occasionally to 13 feet.
.THURSDAY...Northwest gales to 35 knots diminishing to 15 to
25 knots. Rain showers, possibly mixed with snow, then a chance
of rain and snow showers. Waves subsiding to 6 to 9 feet
occasionally to 11 feet, then building to 9 to 12 feet
occasionally to 15 feet.

$$

LSZ261-092100-
MAFOR 0916/
Superior West 12830 11840 14830 11830. A chance of snow showers
late this morning. Waves 2 to 4 feet building to 3 to 5 feet this
afternoon. Waves 3 to 6 feet tonight and Monday morning.

Superior North Central 13820 13830 12840. A chance of snow
showers this afternoon, overnight, and Monday morning. Waves 1 to
3 feet this afternoon. Waves 2 to 3 feet building to 3 to 5 feet
tonight. Waves 5 to 8 feet Monday morning.

Superior South Central 11127 11120 11130 11820 11830 11837 12847.
Waves 3 to 5 feet this afternoon. Waves 2 to 4 feet building to 3
to 5 feet tonight. Waves 5 to 8 feet Monday morning.

Superior East 14130 12820 12837. Waves 2 to 4 feet this afternoon
and tonight. Waves 3 to 6 feet Monday morning.

$$

WFO MQT

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weather.gov/mqt/glftable

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weather.gov/greatlakes