858
FZUS63 KMQT 070301
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
1001 PM EST Thu Nov 6 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 29.5 inch low over Minnesota this evening will move across Upper
Michigan tonight to near Whitefish Bay at 29.3 inches by late Friday
morning. Ridging will build over the lake this weekend as the low
exits into Quebec and 30.6 inch high pressure develops over the
Great Plains, with the ridge over the lake strengthening from 29.8
inches on Saturday to 30.2 inches through Sunday night. The ridge
quickly breaks down early next week as a 29.4 inch trough sweeps
across the lake on Tuesday.


LSZ162-070900-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
1001 PM EST Thu Nov 6 2025 /901 PM CST Thu Nov 6 2025/

.REST OF TONIGHT...Southeast winds 10 to 20 knots backing north
late. A chance of rain showers. Waves 1 to 3 feet building to
2 to 4 feet, then subsiding to calm to 2 feet.
.FRIDAY...North winds 15 to 25 knots increasing to 20 to 30 knots
by late morning, then diminishing to 15 to 25 knots by mid
afternoon. A chance of rain showers, possibly mixed with snow.
Waves building to 3 to 6 feet occasionally to 8 feet, then
subsiding to 2 to 4 feet.
.FRIDAY NIGHT...North winds 10 to 20 knots diminishing to 5 to
15 knots by midnight. Waves subsiding to calm to 2 feet.
.SATURDAY...Northwest winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon. Waves calm to 2 feet.
.SATURDAY NIGHT...Northwest winds 15 to 25 knots increasing to
20 to 30 knots after midnight. A slight chance of snow showers.
Waves building to 3 to 5 feet occasionally to 7 feet.
.SUNDAY...North winds 20 to 30 knots. A chance of snow showers.
Waves building to 3 to 6 feet occasionally to 8 feet.
.SUNDAY NIGHT...North winds 20 to 30 knots diminishing to 15 to
25 knots after midnight. Waves subsiding to 2 to 4 feet.
.MONDAY...Northwest winds 15 to 25 knots becoming southwest 20 to
30 knots. 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. Waves
building to 4 to 7 feet occasionally to 9 feet, then subsiding to
2 to 4 feet.

$$

LSZ263-070900-
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 Thu Nov 6 2025

...GALE WARNING IN EFFECT FROM 10 AM EST FRIDAY THROUGH FRIDAY
AFTERNOON...

.REST OF TONIGHT...Southeast winds 10 to 20 knots veering south
by midnight, then veering northwest late. Rain showers likely
late in the evening, then a chance of rain showers after
midnight. Waves 2 to 4 feet subsiding to 1 to 3 feet.
.FRIDAY...North gales to 35 knots diminishing to 20 to 30 knots
by mid afternoon. A chance of rain showers, possibly mixed with
snow. Waves building to 7 to 10 feet occasionally to 13 feet,
then subsiding to 5 to 8 feet occasionally to 10 feet.
.FRIDAY NIGHT...North winds 15 to 25 knots diminishing to 5 to
15 knots. Waves subsiding to calm to 2 feet.
.SATURDAY...Northwest winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon. A slight chance of snow showers in the
afternoon. Waves calm to 2 feet.
.SATURDAY NIGHT...Northwest winds 15 to 25 knots increasing to
20 to 30 knots after midnight. A chance of snow showers. Waves
building to 4 to 7 feet occasionally to 9 feet.
.SUNDAY...North gales to 35 knots. A chance of snow showers.
Waves building to 5 to 9 feet occasionally to 11 feet.
.SUNDAY NIGHT...North gales to 35 knots. A chance of snow
showers. Waves subsiding to 4 to 7 feet occasionally to 9 feet.
.MONDAY...Northwest winds 20 to 30 knots backing southwest. Waves
subsiding to 1 to 3 feet, then building to 3 to 6 feet
occasionally to 8 feet.
.TUESDAY...Southwest gales to 35 knots becoming west 20 to
30 knots. Waves building to 6 to 9 feet occasionally to 11 feet,
then subsiding to 4 to 7 feet occasionally to 9 feet.

$$

LSZ264-070900-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
1001 PM EST Thu Nov 6 2025

...GALE WARNING IN EFFECT FROM 10 AM EST FRIDAY THROUGH FRIDAY
AFTERNOON...

.REST OF TONIGHT...South winds 15 to 25 knots becoming northwest
10 to 20 knots late. Rain showers likely late in the evening,
then a chance of rain showers after midnight. Waves 2 to 4 feet
building to 3 to 5 feet occasionally to 7 feet, then subsiding to
2 to 4 feet.
.FRIDAY...North gales to 35 knots. A chance of rain and snow
showers. Waves building to 8 to 11 feet occasionally to 14 feet,
then subsiding to 6 to 9 feet occasionally to 11 feet.
.FRIDAY NIGHT...North winds 20 to 30 knots diminishing to 10 to
20 knots by midnight, then becoming northwest 5 to 15 knots late.
Waves subsiding to 1 to 3 feet.
.SATURDAY...Northwest winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon. A slight chance of snow showers in the
afternoon. Waves subsiding to calm to 2 feet, then building to
1 to 3 feet.
.SATURDAY NIGHT...Northwest winds 15 to 25 knots increasing to
20 to 30 knots after midnight. A chance of snow showers. Waves
building to 3 to 6 feet occasionally to 8 feet.
.SUNDAY...North gales to 35 knots. A chance of snow showers.
Waves building to 5 to 8 feet occasionally to 10 feet.
.SUNDAY NIGHT...North gales to 35 knots diminishing to 20 to
30 knots after midnight. A chance of snow showers. Waves building
to 6 to 9 feet occasionally to 11 feet.
.MONDAY...North winds 20 to 30 knots backing west. Waves
subsiding to 2 to 4 feet, then building to 3 to 6 feet
occasionally to 8 feet.
.TUESDAY...Southwest gales to 35 knots becoming west 20 to
30 knots. A chance of snow showers. A chance of rain showers.
Waves building to 6 to 9 feet occasionally to 11 feet, then
subsiding to 4 to 7 feet occasionally to 9 feet.

$$

LSZ265-070900-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
1001 PM EST Thu Nov 6 2025

...GALE WARNING IN EFFECT FROM 10 AM EST FRIDAY THROUGH FRIDAY
AFTERNOON...

.REST OF TONIGHT...South winds 20 to 30 knots becoming southwest
15 to 25 knots late. Showers late in the evening, then a chance
of showers after midnight. Waves 1 to 3 feet building to 2 to
4 feet, then subsiding to calm to 2 feet.
.FRIDAY...Northwest winds 20 to 30 knots becoming north gales to
40 knots. Rain showers likely in the morning, then a chance of
rain showers, possibly mixed with snow in the afternoon. Waves
building to 8 to 11 feet occasionally to 14 feet.
.FRIDAY NIGHT...North gales to 35 knots diminishing to 15 to
25 knots by midnight, then becoming northwest 10 to 20 knots
late. A slight chance of snow showers. Waves subsiding to 2 to
4 feet.
.SATURDAY...Northwest winds 10 to 20 knots increasing to 15 to
25 knots in the afternoon. A chance of snow showers. Waves
subsiding to calm to 2 feet.
.SATURDAY NIGHT...Northwest winds 15 to 25 knots increasing to
20 to 30 knots after midnight. Snow showers likely. Waves
building to 2 to 4 feet.
.SUNDAY...North winds 20 to 30 knots increasing to gales to
35 knots in the afternoon. Snow showers. Waves building to 5 to
8 feet occasionally to 10 feet.
.SUNDAY NIGHT...North gales to 35 knots. Snow showers. Waves
building to 6 to 9 feet occasionally to 11 feet.
.MONDAY...Northwest gales to 35 knots becoming west 15 to
25 knots. A chance of snow showers. Waves subsiding to calm to
2 feet.
.TUESDAY...Southwest gales to 35 knots veering west. A chance of
snow showers. A chance of rain showers. Waves building to 3 to
6 feet occasionally to 8 feet.

$$

LSZ266-070900-
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 Thu Nov 6 2025

...GALE WARNING IN EFFECT FROM FRIDAY AFTERNOON THROUGH FRIDAY
EVENING...

.REST OF TONIGHT...South winds 20 to 30 knots becoming southwest
15 to 25 knots late. A chance of showers late in the evening,
then showers after midnight. Waves 2 to 4 feet building to 3 to
6 feet occasionally to 8 feet, then subsiding to 3 to 5 feet
occasionally to 7 feet.
.FRIDAY...Northwest winds 20 to 30 knots becoming north gales to
40 knots. A chance of rain showers. A chance of snow showers in
the afternoon. Waves subsiding to 2 to 4 feet, then building to
9 to 12 feet occasionally to 15 feet.
.FRIDAY NIGHT...North gales to 35 knots diminishing to 10 to
20 knots. A slight chance of snow showers. Waves subsiding to
3 to 5 feet occasionally to 7 feet.
.SATURDAY...Northwest winds 10 to 20 knots increasing to 15 to
25 knots in the afternoon. A chance of snow showers. Waves
subsiding to 1 to 3 feet.
.SATURDAY NIGHT...Northwest winds 15 to 25 knots veering north
after midnight. Snow showers. Waves building to 3 to 6 feet
occasionally to 8 feet.
.SUNDAY...North winds 20 to 30 knots increasing to gales to
35 knots in the afternoon. Snow showers. Waves building to 5 to
8 feet occasionally to 10 feet.
.SUNDAY NIGHT...North gales to 35 knots. Snow showers. Waves
building to 7 to 10 feet occasionally to 13 feet.
.MONDAY...North winds 20 to 30 knots becoming northwest 15 to
25 knots. A chance of snow showers. Waves subsiding to 3 to
5 feet occasionally to 7 feet.
.TUESDAY...Southwest winds 20 to 30 knots veering west. Snow
showers likely. A chance of rain showers. Waves building to 5 to
8 feet occasionally to 10 feet.

$$

LSZ267-070900-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
1001 PM EST Thu Nov 6 2025

.REST OF TONIGHT...South winds 15 to 25 knots increasing to 20 to
30 knots by midnight. A chance of showers late in the evening,
then showers after midnight. Waves 1 to 3 feet building to 3 to
6 feet occasionally to 8 feet, then subsiding to 3 to 5 feet
occasionally to 7 feet.
.FRIDAY...West winds 15 to 25 knots becoming northwest 20 to
30 knots by late morning, then becoming north to 30 knots with a
few gale force gusts to 35 knots possible by mid afternoon. Rain
showers likely in the morning, then a chance of rain showers,
possibly mixed with snow in the afternoon. Waves subsiding to
2 to 4 feet, then building to 7 to 10 feet occasionally to
13 feet.
.FRIDAY NIGHT...North winds to 30 knots with a few gale force
gusts to 35 knots possible diminishing to 10 to 20 knots. A
slight chance of snow showers after midnight. Waves subsiding to
2 to 4 feet.
.SATURDAY...Northwest winds 10 to 20 knots. A chance of snow
showers. Waves subsiding to calm to 2 feet, then building to 1 to
3 feet.
.SATURDAY NIGHT...North winds 10 to 20 knots increasing to 15 to
25 knots after midnight. Snow showers. Waves building to 2 to
4 feet.
.SUNDAY...North winds 15 to 25 knots. Snow showers. Waves
building to 3 to 6 feet occasionally to 8 feet.
.SUNDAY NIGHT...North winds 20 to 30 knots. 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. Snow showers likely, then a chance of snow showers.
Waves building to 5 to 8 feet occasionally to 10 feet, then
subsiding to 3 to 5 feet occasionally to 7 feet.
.TUESDAY...Southwest winds 20 to 30 knots veering west. Snow
showers likely, then rain showers likely. Waves building to 5 to
8 feet occasionally to 10 feet.

$$

LSZ261-070900-
MAFOR 0704/
Superior West...GALE WARNING IN EFFECT...11320 11710 11820 13840
12820. A chance of showers overnight. A chance of rain showers
Friday morning. Waves 1 to 3 feet overnight. Waves 2 to 4 feet
building to 4 to 7 feet Friday. Waves 3 to 5 feet subsiding to 2
to 4 feet Friday evening.

Superior North Central...GALE WARNING IN EFFECT...11436 11426
11730 11856 12850 12840. A chance of snow showers Friday
afternoon. Waves 2 to 4 feet building to 3 to 5 feet overnight.
Waves 3 to 5 feet building to 8 to 11 feet Friday. Waves 5 to 9
feet Friday evening.

Superior South Central...GALE WARNING IN EFFECT...11436 11430
11620 11740 13850 11840. A chance of snow showers Friday
afternoon and Friday evening. Waves 2 to 4 feet building to 3 to
5 feet, then subsiding to 2 to 4 feet overnight. Waves 1 to 3
feet building to 9 to 12 feet Friday. Waves 7 to 11 feet Friday
evening.

Superior East...GALE WARNING IN EFFECT...11446 11436 11536 11726
11840 12850 11840. A chance of snow showers Friday evening. Waves
3 to 6 feet overnight. Waves 3 to 5 feet building to 5 to 9 feet
Friday. Waves 5 to 9 feet Friday 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