459
FZUS63 KMQT 012001
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
401 PM EDT Sat Nov 1 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...

30.1 inch ridging persists over the lake tonight as 30.3 inch high
pressure shifts from the Central Plains to the Midwest. A 29.3 inch
low moving across northern Canada will reach Hudson Bay at 29.0
inches by Monday morning, pulling a 29.6 inch trough across Lake
Superior Sunday night into Monday. A 30.0 inch ridge then rebuilds
over the lake on Tuesday. A 29.8 to 29.9 inch low moves over Lake
Michigan Tuesday night. This will be followed by a 30.2 inch high
moving from the Northern Plains to the the Great Lakes late
Wednesday.


LSZ162-020800-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
401 PM EDT Sat Nov 1 2025 /301 PM CDT Sat Nov 1 2025/

...GALE WARNING IN EFFECT FROM SUNDAY MORNING THROUGH MONDAY
AFTERNOON...

.LATE THIS AFTERNOON...Southwest winds 5 to 15 knots. Waves calm
to 2 feet.
.TONIGHT...Southwest winds 5 to 15 knots increasing to 15 to
25 knots. Waves building to 3 to 5 feet occasionally to 7 feet.
.SUNDAY...Southwest gales to 40 knots. A slight chance of rain
showers. Waves building to 10 to 14 feet occasionally to 18 feet.
.SUNDAY NIGHT...Southwest gales to 40 knots becoming west gales
to 35 knots after midnight, then diminishing to 20 to 30 knots
late. A slight chance of showers through midnight. Waves
subsiding to 4 to 7 feet occasionally to 9 feet.
.MONDAY...West winds 20 to 30 knots. Waves building to 5 to
8 feet occasionally to 10 feet, then subsiding to 3 to 6 feet
occasionally to 8 feet.
.MONDAY NIGHT...West winds 15 to 25 knots. Waves subsiding to
2 to 4 feet.
.TUESDAY...West winds 10 to 20 knots backing southwest by mid
afternoon. Waves subsiding to calm to 2 feet.
.TUESDAY NIGHT...West winds 5 to 15 knots becoming northwest
10 to 20 knots after midnight. Waves calm to 2 feet.
.WEDNESDAY...West winds 10 to 20 knots diminishing to 5 to
15 knots. Waves calm to 2 feet.
.THURSDAY...South winds 10 to 20 knots becoming southwest 15 to
25 knots. A chance of rain showers. Waves building to 1 to
3 feet.

$$

LSZ263-020800-
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 PM EDT Sat Nov 1 2025

...GALE WARNING IN EFFECT FROM SUNDAY MORNING THROUGH LATE MONDAY
NIGHT...

.LATE THIS AFTERNOON...West winds less than 10 knots. Waves calm
to 2 feet.
.TONIGHT...Southwest winds 5 to 15 knots increasing to 15 to
25 knots. Waves building to 3 to 5 feet occasionally to 7 feet.
.SUNDAY...Southwest gales to 45 knots. A slight chance of rain
showers. Waves building to 10 to 14 feet occasionally to 18 feet.
.SUNDAY NIGHT...Southwest gales to 45 knots becoming west gales
to 40 knots after midnight. A slight chance of showers through
midnight. Waves building to 12 to 17 feet occasionally to
21 feet, then subsiding to 8 to 11 feet occasionally to 14 feet.
.MONDAY...West gales to 40 knots. Waves building to 8 to 12 feet
occasionally to 15 feet.
.MONDAY 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.
.TUESDAY...West winds 15 to 25 knots. Waves subsiding to 2 to
4 feet.
.TUESDAY NIGHT...West winds 5 to 15 knots. Waves subsiding to
calm to 2 feet.
.WEDNESDAY...West winds 15 to 25 knots diminishing to 10 to
20 knots. Waves building to 1 to 3 feet, then subsiding to calm
to 2 feet.
.THURSDAY...South winds 15 to 25 knots veering southwest. A
chance of rain showers. Waves building to 3 to 5 feet
occasionally to 7 feet.

$$

LSZ264-020800-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
401 PM EDT Sat Nov 1 2025

...GALE WARNING IN EFFECT FROM SUNDAY MORNING THROUGH LATE MONDAY
NIGHT...

.LATE THIS AFTERNOON...Northwest winds 5 to 15 knots. Waves calm
to 2 feet.
.TONIGHT...Southwest winds 5 to 15 knots increasing to 15 to
25 knots late. Isolated rain showers through midnight. Waves
building to 3 to 5 feet occasionally to 7 feet.
.SUNDAY...Southwest gales to 45 knots. A chance of rain showers.
Waves building to 11 to 15 feet occasionally to 19 feet.
.SUNDAY NIGHT...Southwest gales to 45 knots becoming west gales
to 40 knots after midnight. A slight chance of showers through
midnight. Waves building to 12 to 17 feet occasionally to
21 feet, then subsiding to 10 to 14 feet occasionally to 18 feet.
.MONDAY...West gales to 40 knots. Waves subsiding to 9 to 12 feet
occasionally to 15 feet, then building to 10 to 14 feet
occasionally to 18 feet.
.MONDAY NIGHT...West gales to 35 knots diminishing to 20 to
30 knots after midnight. Waves subsiding to 4 to 7 feet
occasionally to 9 feet.
.TUESDAY...West winds 15 to 25 knots. Waves subsiding to 2 to
4 feet.
.TUESDAY NIGHT...West winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. Waves subsiding to 1 to 3 feet.
.WEDNESDAY...Northwest winds 15 to 25 knots. Waves building to
2 to 4 feet, then subsiding to calm to 2 feet.
.THURSDAY...South winds 15 to 25 knots. A chance of rain showers.
Waves building to 3 to 6 feet occasionally to 8 feet.

$$

LSZ265-020800-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
401 PM EDT Sat Nov 1 2025

...GALE WARNING IN EFFECT FROM SUNDAY AFTERNOON THROUGH LATE
MONDAY NIGHT...

.LATE THIS AFTERNOON...North winds 5 to 15 knots. Isolated rain
showers. Waves 1 to 3 feet subsiding to calm to 2 feet.
.TONIGHT...West winds 5 to 15 knots becoming southwest 10 to
20 knots after midnight, then increasing to 15 to 25 knots late.
Isolated rain showers through midnight. Waves building to 1 to
3 feet.
.SUNDAY...Southwest winds 15 to 25 knots increasing to gales to
40 knots in the afternoon. A slight chance of rain showers by mid
afternoon. Waves building to 5 to 8 feet occasionally to 10 feet.
.SUNDAY NIGHT...Southwest gales to 45 knots becoming west gales
to 40 knots after midnight. A chance of showers. Waves building
to 5 to 9 feet occasionally to 11 feet.
.MONDAY...West gales to 40 knots. Waves 6 to 9 feet occasionally
to 11 feet.
.MONDAY NIGHT...West gales to 35 knots diminishing to 20 to
30 knots after midnight. Waves subsiding to 3 to 5 feet
occasionally to 7 feet.
.TUESDAY...West winds 15 to 25 knots. Waves subsiding to calm to
2 feet.
.TUESDAY NIGHT...West winds 10 to 20 knots. Waves calm to 2 feet.
.WEDNESDAY...Northwest winds 15 to 25 knots. Waves building to
1 to 3 feet, then subsiding to calm to 2 feet.
.THURSDAY...South winds 15 to 25 knots increasing to 20 to
30 knots. A chance of rain showers. Waves building to 1 to
3 feet.

$$

LSZ266-020800-
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 PM EDT Sat Nov 1 2025

...GALE WARNING IN EFFECT FROM SUNDAY AFTERNOON THROUGH LATE
MONDAY NIGHT...

.LATE THIS AFTERNOON...North winds 10 to 20 knots. Isolated rain
showers. Waves 1 to 3 feet subsiding to calm to 2 feet.
.TONIGHT...West winds 5 to 15 knots backing southwest after
midnight, then increasing to 10 to 20 knots late. Isolated rain
showers. Waves building to 2 to 4 feet.
.SUNDAY...Southwest winds 15 to 25 knots increasing to gales to
40 knots in the afternoon. A slight chance of rain showers. Waves
building to 9 to 12 feet occasionally to 15 feet.
.SUNDAY NIGHT...Southwest gales to 45 knots becoming west gales
to 40 knots after midnight. Showers likely through midnight, then
a chance of showers after midnight. Waves building to 12 to
17 feet occasionally to 21 feet, then subsiding to 10 to 14 feet
occasionally to 18 feet.
.MONDAY...West gales to 40 knots. A slight chance of showers
through early afternoon. Waves building to 11 to 15 feet
occasionally to 19 feet, then subsiding to 10 to 14 feet
occasionally to 18 feet.
.MONDAY NIGHT...West gales to 35 knots diminishing to 20 to
30 knots after midnight. Waves subsiding to 6 to 9 feet
occasionally to 11 feet.
.TUESDAY...West winds 15 to 25 knots diminishing to 10 to
20 knots by mid afternoon. Waves subsiding to 3 to 5 feet
occasionally to 7 feet.
.TUESDAY NIGHT...West winds 10 to 20 knots. A chance of showers.
Waves subsiding to 1 to 3 feet.
.WEDNESDAY...Northwest winds 15 to 25 knots. A chance of rain
showers. Waves building to 3 to 6 feet occasionally to 8 feet,
then subsiding to 2 to 4 feet.
.THURSDAY...South winds 20 to 30 knots. A chance of rain showers.
Waves subsiding to 1 to 3 feet, then building to 4 to 7 feet
occasionally to 9 feet.

$$

LSZ267-020800-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
401 PM EDT Sat Nov 1 2025

...GALE WARNING IN EFFECT FROM SUNDAY AFTERNOON THROUGH LATE
MONDAY NIGHT...

.LATE THIS AFTERNOON...Northwest winds 10 to 20 knots. Isolated
rain showers. Waves calm to 2 feet.
.TONIGHT...Northwest winds 5 to 15 knots backing west after
midnight, then becoming southwest 10 to 20 knots late. Scattered
rain showers. Waves building to 1 to 3 feet.
.SUNDAY...Southwest winds 15 to 25 knots increasing to gales to
40 knots. A slight chance of rain showers. Waves building to 8 to
11 feet occasionally to 14 feet.
.SUNDAY NIGHT...Southwest gales to 45 knots becoming west gales
to 40 knots late. Showers. Waves building to 10 to 14 feet
occasionally to 18 feet, then subsiding to 9 to 12 feet
occasionally to 15 feet.
.MONDAY...West gales to 45 knots. A chance of showers. Waves
building to 12 to 17 feet occasionally to 21 feet.
.MONDAY NIGHT...West gales to 40 knots. Waves subsiding to 7 to
10 feet occasionally to 13 feet.
.TUESDAY...West winds 20 to 30 knots diminishing to 15 to
25 knots by mid afternoon. Waves subsiding to 3 to 5 feet
occasionally to 7 feet.
.TUESDAY NIGHT...West winds 10 to 20 knots. A chance of showers.
Waves subsiding to 1 to 3 feet.
.WEDNESDAY...Northwest winds 15 to 25 knots. A chance of rain
showers. Waves building to 3 to 6 feet occasionally to 8 feet,
then subsiding to 2 to 4 feet.
.THURSDAY...South winds 10 to 20 knots increasing to 15 to
25 knots. Rain showers likely. Waves subsiding to 1 to 3 feet,
then building to 3 to 6 feet occasionally to 8 feet.

$$

LSZ261-020200-
MAFOR 0121/
Superior West...GALE WARNING IN EFFECT...11600 11500 11510 11520
11530 11540 12550. Waves 2 feet or less building to 2 to 4 feet
tonight. Waves 3 to 6 feet building to 8 to 11 feet Sunday.

Superior North Central...GALE WARNING IN EFFECT...11700 11600
11510 11520 11530 11540 12550. A chance of showers Sunday
afternoon. Waves 1 to 2 feet building to 2 to 4 feet tonight.
Waves 3 to 6 feet building to 9 to 13 feet Sunday.

Superior South Central...GALE WARNING IN EFFECT...11810 11700
12510 11520 11530 11540 11550. Waves 1 to 3 feet tonight. Waves 1
to 3 feet building to 4 to 7 feet Sunday.

Superior East...GALE WARNING IN EFFECT...11800 11700 11600 11610
11520 11530 11540 11550. Waves 1 to 2 feet tonight. Waves 2 to 4
feet building to 7 to 10 feet Sunday.

$$

WFO MQT

Experimental modernized open lake forecast is available online at
weather.gov/mqt/glftable

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weather.gov/greatlakes