534
FZUS63 KMQT 040301
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
1001 PM EST Mon Nov 3 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...

Through Tuesday afternoon, a 30.0 inch ridge will pass over the lake
associated with 30.3 inch high pressure over the US Southeast.
Tuesday night through Wednesday, a low pressure will deepen from
29.9 inches to 29.7 inches as it passes from the Northern Plains
across Lake Michigan. As the low departs to the east Wednesday
evening at 29.6 inches, high pressure builds over the Northern
Plains at around 30.2 inches. This high settles over the Great Lakes
basin Thursday before a 29.7 inch low pressure over the Plains
Thursday night deepens to 29.4 inches as it passes over the Upper
Great Lakes, departing to the east for the early weekend period.


LSZ162-040900-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
1001 PM EST Mon Nov 3 2025 /901 PM CST Mon Nov 3 2025/

.REST OF TONIGHT...West winds 20 to 30 knots diminishing to 15 to
25 knots by midnight. Waves 3 to 5 feet occasionally to 7 feet
subsiding to 1 to 3 feet.
.TUESDAY...West winds 10 to 20 knots becoming southwest 5 to
15 knots by late morning, then backing east by mid afternoon.
Waves subsiding to calm to 2 feet.
.TUESDAY NIGHT...East winds 5 to 15 knots backing northeast by
midnight, then becoming north 10 to 20 knots late. A chance of
rain showers. Waves calm to 2 feet.
.WEDNESDAY...Northwest winds 20 to 30 knots backing west in the
afternoon. Waves building to 3 to 5 feet occasionally to 7 feet,
then subsiding to 2 to 4 feet.
.WEDNESDAY NIGHT...Northwest winds 10 to 20 knots becoming west
5 to 15 knots after midnight. Waves subsiding to calm to 2 feet.
.THURSDAY...South winds 5 to 15 knots increasing to 15 to
25 knots in the afternoon. Waves building to 1 to 3 feet.
.THURSDAY NIGHT...South winds 15 to 25 knots veering northwest
after midnight. A chance of rain showers. Waves 1 to 3 feet.
.FRIDAY...North winds 15 to 25 knots diminishing to 10 to
20 knots. A chance of rain showers. Waves building to 3 to 5 feet
occasionally to 7 feet, then subsiding to calm to 2 feet.
.SATURDAY...West winds 5 to 15 knots becoming north 15 to
25 knots. A chance of rain and snow showers. Waves building to
2 to 4 feet.

$$

LSZ263-040900-
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 Mon Nov 3 2025

...GALE WARNING IN EFFECT UNTIL 4 AM EST TUESDAY...

.REST OF TONIGHT...West gales to 35 knots diminishing to 20 to
30 knots late. Waves 7 to 10 feet occasionally to 13 feet
subsiding to 3 to 6 feet occasionally to 8 feet.
.TUESDAY...West winds 15 to 25 knots backing southwest by late
morning, then diminishing to 10 to 20 knots by mid afternoon.
Waves subsiding to 1 to 3 feet.
.TUESDAY NIGHT...Southeast winds 5 to 15 knots backing east by
midnight, then becoming north 10 to 20 knots late. A chance of
rain showers. Waves subsiding to calm to 2 feet.
.WEDNESDAY...Northwest winds 20 to 30 knots. A slight chance of
rain showers in the morning. Waves building to 3 to 6 feet
occasionally to 8 feet.
.WEDNESDAY NIGHT...Northwest winds 15 to 25 knots diminishing to
5 to 15 knots after midnight. Waves subsiding to calm to 2 feet.
.THURSDAY...Southwest winds 5 to 15 knots becoming south 15 to
25 knots in the afternoon. Waves building to 1 to 3 feet.
.THURSDAY NIGHT...South winds 15 to 25 knots veering west after
midnight. Rain showers likely in the evening, then a chance of
rain showers after midnight. Waves building to 2 to 4 feet, then
subsiding to 1 to 3 feet.
.FRIDAY...North gales to 35 knots diminishing to 20 to 30 knots.
A chance of rain showers. Waves building to 5 to 8 feet
occasionally to 10 feet, then subsiding to calm to 2 feet.
.SATURDAY...Northwest winds 5 to 15 knots becoming north 20 to
30 knots. A chance of snow showers, possibly mixed with rain.
Waves building to 3 to 5 feet occasionally to 7 feet.

$$

LSZ264-040900-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
1001 PM EST Mon Nov 3 2025

...GALE WARNING IN EFFECT UNTIL 4 AM EST TUESDAY...

.REST OF TONIGHT...West gales to 35 knots diminishing to 20 to
30 knots late. Waves 7 to 10 feet occasionally to 13 feet
subsiding to 4 to 7 feet occasionally to 9 feet.
.TUESDAY...West winds 15 to 25 knots becoming southwest 10 to
20 knots by mid afternoon. Waves subsiding to 2 to 4 feet.
.TUESDAY NIGHT...Southwest winds 5 to 15 knots becoming northwest
10 to 20 knots late. A chance of rain showers. Waves subsiding to
calm to 2 feet, then building to 1 to 3 feet.
.WEDNESDAY...Northwest winds 20 to 30 knots. A slight chance of
rain showers. Waves building to 4 to 7 feet occasionally to
9 feet.
.WEDNESDAY NIGHT...Northwest winds 20 to 30 knots diminishing to
5 to 15 knots after midnight. Waves subsiding to 1 to 3 feet.
.THURSDAY...West winds 5 to 15 knots becoming south 15 to
25 knots in the afternoon. Waves subsiding to calm to 2 feet,
then building to 2 to 4 feet.
.THURSDAY NIGHT...South winds 15 to 25 knots veering west after
midnight. Rain showers likely in the evening, then a chance of
rain showers after midnight. Waves building to 3 to 5 feet
occasionally to 7 feet, then subsiding to 2 to 4 feet.
.FRIDAY...North gales to 35 knots diminishing to 20 to 30 knots.
A chance of rain showers. Waves building to 7 to 10 feet
occasionally to 13 feet, then subsiding to 1 to 3 feet.
.SATURDAY...Northwest winds 5 to 15 knots becoming north 20 to
30 knots. A chance of snow showers. Waves subsiding to calm to
2 feet, then building to 3 to 5 feet occasionally to 7 feet.

$$

LSZ265-040900-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
1001 PM EST Mon Nov 3 2025

...GALE WARNING IN EFFECT UNTIL 4 AM EST TUESDAY...

.REST OF TONIGHT...West gales to 40 knots diminishing to 20 to
30 knots late. Waves 5 to 8 feet occasionally to 10 feet
subsiding to 3 to 5 feet occasionally to 7 feet.
.TUESDAY...West winds 15 to 25 knots becoming southwest 10 to
20 knots by mid afternoon. Waves subsiding to calm to 2 feet.
.TUESDAY NIGHT...South winds 10 to 20 knots becoming southeast
5 to 15 knots by midnight, then backing east late. A chance of
showers in the evening, then showers likely after midnight. Waves
calm to 2 feet.
.WEDNESDAY...Northwest winds 20 to 30 knots increasing to gales
to 40 knots in the afternoon. A chance of showers. Waves building
to 4 to 7 feet occasionally to 9 feet.
.WEDNESDAY NIGHT...Northwest gales to 35 knots diminishing to
10 to 20 knots after midnight. A slight chance of rain showers in
the evening. Waves subsiding to calm to 2 feet.
.THURSDAY...Southwest winds 10 to 20 knots becoming south 20 to
30 knots in the afternoon. Waves building to 1 to 3 feet.
.THURSDAY NIGHT...South winds 20 to 30 knots becoming southwest
15 to 25 knots after midnight. Rain showers. Waves building to
2 to 4 feet, then subsiding to 1 to 3 feet.
.FRIDAY...North gales to 35 knots diminishing to 20 to 30 knots.
A chance of rain showers. Waves building to 6 to 9 feet
occasionally to 11 feet, then subsiding to 2 to 4 feet.
.SATURDAY...West winds 10 to 20 knots becoming north 20 to
30 knots. A chance of snow showers. A chance of rain showers.
Snow showers likely. Waves subsiding to calm to 2 feet, then
building to 2 to 4 feet.

$$

LSZ266-040900-
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 Mon Nov 3 2025

...GALE WARNING IN EFFECT UNTIL 4 AM EST TUESDAY...

.REST OF TONIGHT...West gales to 35 knots diminishing to 20 to
30 knots late. Waves 10 to 14 feet occasionally to 18 feet
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 2 to 4 feet.
.TUESDAY NIGHT...Southwest winds 10 to 20 knots becoming south
5 to 15 knots by midnight, then backing east late. A chance of
showers in the evening, then showers after midnight. Waves
subsiding to calm to 2 feet.
.WEDNESDAY...Northwest winds 20 to 30 knots increasing to gales
to 35 knots in the afternoon. Showers likely in the morning, then
a chance of showers in the afternoon. Waves building to 8 to
11 feet occasionally to 14 feet.
.WEDNESDAY NIGHT...Northwest gales to 35 knots diminishing to
10 to 20 knots after midnight. A chance of rain showers in the
evening. Waves subsiding to 3 to 5 feet occasionally to 7 feet.
.THURSDAY...West winds 10 to 20 knots becoming south 20 to
30 knots in the afternoon. A chance of rain showers in the
afternoon. Waves subsiding to 1 to 3 feet, then building to 3 to
5 feet occasionally to 7 feet.
.THURSDAY NIGHT...South winds 20 to 30 knots becoming southwest
15 to 25 knots after midnight. Rain showers. Waves building to
4 to 7 feet occasionally to 9 feet, then subsiding to 3 to 6 feet
occasionally to 8 feet.
.FRIDAY...North gales to 35 knots. Snow showers likely. A chance
of rain showers. A chance of snow showers. Waves building to 7 to
10 feet occasionally to 13 feet, then subsiding to 3 to 5 feet
occasionally to 7 feet.
.SATURDAY...Northwest winds 10 to 20 knots becoming north 15 to
25 knots. A chance of snow showers. Snow showers likely. Waves
subsiding to calm to 2 feet, then building to 3 to 5 feet
occasionally to 7 feet.

$$

LSZ267-040900-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
1001 PM EST Mon Nov 3 2025

...GALE WARNING IN EFFECT UNTIL 4 AM EST TUESDAY...

.REST OF TONIGHT...West gales to 35 knots. Waves 10 to 14 feet
occasionally to 18 feet subsiding to 7 to 10 feet occasionally to
13 feet.
.TUESDAY...West winds 20 to 30 knots diminishing to 10 to
20 knots. Waves subsiding to 3 to 5 feet occasionally to 7 feet.
.TUESDAY NIGHT...Southwest winds 10 to 20 knots backing southeast
late. A slight chance of showers in the evening, then showers
after midnight. Waves subsiding to calm to 2 feet.
.WEDNESDAY...Northwest winds 15 to 25 knots increasing to gales
to 35 knots in the afternoon. Showers in the morning, then a
chance of showers in the afternoon. Waves building to 8 to
11 feet occasionally to 14 feet.
.WEDNESDAY NIGHT...Northwest winds 20 to 30 knots diminishing to
10 to 20 knots after midnight. A chance of rain showers in the
evening. Waves subsiding to 3 to 5 feet occasionally to 7 feet.
.THURSDAY...West winds 10 to 20 knots becoming southwest 15 to
25 knots in the afternoon. A chance of rain showers in the
afternoon. Waves subsiding to 1 to 3 feet, then building to 2 to
4 feet.
.THURSDAY NIGHT...South winds 20 to 30 knots. Rain showers. Waves
building to 3 to 6 feet occasionally to 8 feet.
.FRIDAY...North winds 20 to 30 knots diminishing to 15 to
25 knots. Rain showers. A chance of snow showers. A chance of
rain showers. Waves building to 6 to 9 feet occasionally to
11 feet, then subsiding to 2 to 4 feet.
.SATURDAY...Northwest winds 10 to 20 knots veering north. A
chance of snow showers, then snow showers likely. Waves subsiding
to calm to 2 feet, then building to 2 to 4 feet.

$$

LSZ261-040900-
MAFOR 0404/
Superior West...GALE WARNING IN EFFECT...12640 11630 11620 11520
11410 12300. A chance of showers Tuesday evening. Waves 3 to 6
feet overnight. Waves 2 to 4 feet subsiding to 1 to 3 feet
Tuesday. Waves 1 foot or less Tuesday evening.

Superior North Central...GALE WARNING IN EFFECT...11650 12640
13630 11520 11510. A chance of showers Tuesday evening. Waves 6
to 10 feet subsiding to 5 to 8 feet overnight. Waves 4 to 7 feet
subsiding to 3 to 6 feet Tuesday. Waves 2 to 4 feet subsiding to
1 to 3 feet Tuesday evening.

Superior South Central...GALE WARNING IN EFFECT...11650 12640
12630 11620 12410. A chance of showers Tuesday evening. Waves 6
to 9 feet subsiding to 4 to 7 feet overnight. Waves 3 to 6 feet
subsiding to 1 to 2 feet Tuesday. Waves 1 foot or less Tuesday
evening.

Superior East...GALE WARNING IN EFFECT...11650 12640 12630 11620
12510. A chance of showers Tuesday evening. Waves 9 to 13 feet
overnight. Waves 6 to 10 feet subsiding to 4 to 7 feet Tuesday.
Waves 3 to 5 feet subsiding to 2 to 3 feet Tuesday evening.

$$

WFO MQT

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

Graphical marine forecasts are available online at:
weather.gov/greatlakes