811
FZUS63 KMQT 100901
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
401 AM EST Mon Nov 10 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...

30.3 inch ridging remains over Lake Superior this morning, with 30.7
inch high pressure over the Great Plains. This evening, a 29.3 inch
low over northern Saskatchewan will begin to erode the ridge over
Lake Superior down to 30.1 inches. As the low pushes towards Hudson
Bay Tuesday, a 29.5 inch trough draped south from the low will push
over the lake. By Wednesday night, the lake will be between 30.1
inch ridging over the Plains and a deep 28.4 inch low over Labrador.
Ridging builds to 30.0 inches over the lake Thursday night ahead of
a 29.2 inch low moving southeast out of the northern Rockies and
over the Canadian Prairie for the beginning of the weekend.


LSZ162-102100-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
401 AM EST Mon Nov 10 2025 /301 AM CST Mon Nov 10 2025/

.EARLY THIS MORNING...North winds 15 to 25 knots. Waves 2 to
4 feet.
.TODAY...North winds 15 to 25 knots becoming northwest 10 to
20 knots. Waves subsiding to calm to 2 feet.
.TONIGHT...West winds 5 to 15 knots becoming southwest 10 to
20 knots by midnight, then increasing to 20 to 30 knots late. A
chance of snow showers. Waves building to 3 to 5 feet
occasionally to 7 feet.
.TUESDAY...Southwest winds 20 to 30 knots veering west. A slight
chance of snow showers in the morning. Waves building to 4 to
7 feet occasionally to 9 feet, then subsiding to 2 to 4 feet.
.TUESDAY NIGHT...West winds 20 to 30 knots. A slight chance of
rain showers after midnight. Waves building to 3 to 6 feet
occasionally to 8 feet.
.WEDNESDAY...Northwest winds 20 to 30 knots backing west in the
afternoon. Waves 3 to 6 feet occasionally to 8 feet.
.WEDNESDAY NIGHT...West winds 15 to 25 knots. Waves subsiding to
2 to 4 feet.
.THURSDAY...West winds 10 to 20 knots becoming northeast 5 to
15 knots. Waves subsiding to calm to 2 feet.
.FRIDAY...East winds 10 to 20 knots increasing to 15 to 25 knots.
Waves building to 3 to 5 feet occasionally to 7 feet.

$$

LSZ263-102100-
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-
401 AM EST Mon Nov 10 2025

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

$$

LSZ264-102100-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
401 AM EST Mon Nov 10 2025

.EARLY THIS MORNING...North winds 15 to 25 knots. A chance of
snow showers. Waves 2 to 4 feet building to 3 to 5 feet
occasionally to 7 feet.
.TODAY...North winds 15 to 25 knots diminishing to 10 to 20 knots
by mid afternoon. A chance of snow showers. Waves building to
3 to 6 feet occasionally to 8 feet, then subsiding to 2 to
4 feet.
.TONIGHT...Northwest winds 5 to 15 knots becoming west 10 to
20 knots by midnight, then backing southwest late. A chance of
rain and snow showers after midnight. Waves subsiding to calm to
2 feet, then building to 3 to 5 feet occasionally to 7 feet.
.TUESDAY...Southwest winds 20 to 30 knots veering west by mid
afternoon. A chance of snow showers, possibly mixed with rain.
Waves building to 4 to 8 feet occasionally to 10 feet.
.TUESDAY NIGHT...West winds 20 to 30 knots veering northwest
after midnight. A chance of rain showers. Waves building to 5 to
8 feet occasionally to 10 feet.
.WEDNESDAY...Northwest gales to 35 knots. Waves building to 6 to
9 feet occasionally to 11 feet.
.WEDNESDAY NIGHT...Northwest gales to 35 knots becoming west
20 to 30 knots after midnight. Waves subsiding to 4 to 7 feet
occasionally to 9 feet.
.THURSDAY...West winds 20 to 30 knots becoming northwest 15 to
25 knots. Waves subsiding to calm to 2 feet.
.FRIDAY...East winds 15 to 25 knots becoming southeast gales to
35 knots. Waves building to 7 to 10 feet occasionally to 13 feet.

$$

LSZ265-102100-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
401 AM EST Mon Nov 10 2025

.EARLY THIS MORNING...North winds 15 to 25 knots. Snow showers
likely. Waves 3 to 5 feet occasionally to 7 feet.
.TODAY...North winds 20 to 30 knots diminishing to 15 to 25 knots
by mid afternoon. Snow showers likely in the morning, then a
chance of snow showers in the afternoon. Waves building to 4 to
7 feet occasionally to 9 feet, then subsiding to 3 to 6 feet
occasionally to 8 feet.
.TONIGHT...Northwest winds 10 to 20 knots backing southwest late.
A slight chance of snow showers. Waves subsiding to calm to
2 feet.
.TUESDAY...Southwest winds 15 to 25 knots increasing to 20 to
30 knots by late morning, then veering west by mid 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. A chance of rain showers in the evening,
then rain showers likely after midnight. Waves building to 4 to
7 feet occasionally to 9 feet.
.WEDNESDAY...Northwest gales to 40 knots. A chance of rain
showers. Waves building to 5 to 8 feet occasionally to 10 feet.
.WEDNESDAY NIGHT...Northwest gales to 40 knots becoming west
gales to 35 knots after midnight. A chance of rain showers. Waves
subsiding to 3 to 6 feet occasionally to 8 feet.
.THURSDAY...West winds 20 to 30 knots becoming northwest 15 to
25 knots. Waves subsiding to calm to 2 feet.
.FRIDAY...East winds 15 to 25 knots becoming southeast 20 to
30 knots. Waves building to 3 to 6 feet occasionally to 8 feet.

$$

LSZ266-102100-
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-
401 AM EST Mon Nov 10 2025

.EARLY THIS MORNING...North winds 20 to 30 knots. A chance of
snow showers. Waves 3 to 5 feet occasionally to 7 feet.
.TODAY...North winds 20 to 30 knots diminishing to 15 to 25 knots
by mid afternoon. Snow showers likely in the morning, then a
chance of snow showers in the afternoon. Waves building to 4 to
7 feet occasionally to 9 feet, then subsiding to 3 to 6 feet
occasionally to 8 feet.
.TONIGHT...North winds 10 to 20 knots backing west late. 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 by late morning, then becoming west 15 to 25 knots by
mid afternoon. A chance of rain and snow showers. Waves building
to 4 to 7 feet occasionally to 9 feet.
.TUESDAY NIGHT...West winds 20 to 30 knots veering northwest
after midnight. A chance of rain showers in the evening, then
rain showers likely after midnight. Waves building to 4 to 8 feet
occasionally to 10 feet.
.WEDNESDAY...Northwest gales to 40 knots. Rain showers likely in
the morning, then a chance of rain showers in the afternoon.
Waves building to 9 to 12 feet occasionally to 15 feet.
.WEDNESDAY NIGHT...Northwest gales to 40 knots diminishing to
20 to 30 knots after midnight. A chance of rain showers. Waves
subsiding to 7 to 10 feet occasionally to 13 feet.
.THURSDAY...West winds 20 to 30 knots becoming northwest 15 to
25 knots. A chance of rain showers. Waves subsiding to 2 to
4 feet.
.FRIDAY...East winds 15 to 25 knots becoming southeast gales to
35 knots. Waves subsiding to 1 to 3 feet, then building to 6 to
9 feet occasionally to 11 feet.

$$

LSZ267-102100-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
401 AM EST Mon Nov 10 2025

.EARLY THIS MORNING...North winds 15 to 25 knots. Waves 1 to
3 feet.
.TODAY...North winds 15 to 25 knots. A chance of snow showers.
Waves building to 3 to 5 feet occasionally to 7 feet.
.TONIGHT...North winds 15 to 25 knots diminishing to 10 to
20 knots by midnight, then backing northwest late. A slight
chance of rain showers in the evening. A chance of snow showers.
Waves subsiding to calm to 2 feet.
.TUESDAY...Southwest winds 10 to 20 knots becoming south 15 to
25 knots by late morning, then becoming southwest 20 to 30 knots
by mid afternoon. A chance of snow showers, possibly mixed with
rain 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 5 to 8 feet
occasionally to 10 feet.
.WEDNESDAY...Northwest gales to 35 knots. Rain showers. Waves
building to 9 to 12 feet occasionally to 15 feet.
.WEDNESDAY NIGHT...Northwest gales to 35 knots. Rain showers
likely in the evening, then a chance of rain showers after
midnight. Waves subsiding to 7 to 10 feet occasionally to
13 feet.
.THURSDAY...Northwest winds 20 to 30 knots diminishing to 15 to
25 knots. Rain showers likely, then a chance of rain showers.
Waves subsiding to 2 to 4 feet.
.FRIDAY...East winds 10 to 20 knots becoming southeast 15 to
25 knots. A chance of rain showers. Waves subsiding to 1 to
3 feet, then building to 3 to 6 feet occasionally to 8 feet.

$$

LSZ261-101500-
MAFOR 1010/
Superior West 12830 11820 11710 12610 11520 11537. Waves 2 to 4
feet subsiding to 1 to 3 feet today. Waves 1 to 3 feet building
to 2 to 4 feet tonight.

Superior North Central 13830 12820 11710 11610 11520. A chance of
snow showers this morning. A chance of rain showers overnight.
Waves 3 to 6 feet today. Waves 2 to 4 feet subsiding to 1 to 3
feet tonight.

Superior South Central 11837 12847 12830 12720 11620. Waves 3 to
6 feet building to 4 to 7 feet today. Waves 3 to 6 feet subsiding
to 2 to 3 feet tonight.

Superior East 11820 13830 12820 11810 11710. A chance of snow
showers this morning and tonight. Waves 2 to 4 feet building to 3
to 5 feet today. Waves 2 to 4 feet subsiding to 1 to 3 feet
tonight.

$$

WFO MQT

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weather.gov/mqt/glftable

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weather.gov/greatlakes