297
FZUS63 KMQT 020300
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
1000 PM EST Sun Feb 1 2026

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 29.9 inch trough will cross Lake Superior tonight. The trough
moves over the Ontario/Quebec line Monday night as a 30.4 inch high
moves south from Lake Winnipeg. This high settles south over the
Upper Mississippi River Valley and Plains through Wednesday ahead of
a 29.4 inch low moving into Hudson Bay by Thursday morning. This low
pulls a 29.6 inch trough through Lake Superior Thursday night
followed by ridging of at least 30.3 inches by Friday night.


LSZ162-020900-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
1000 PM EST Sun Feb 1 2026 /900 PM CST Sun Feb 1 2026/

.REST OF TONIGHT...Northwest winds 15 to 25 knots. A slight
chance of snow showers late in the evening. Waves 1 to 3 feet
building to 2 to 4 feet, then subsiding to 1 to 3 feet.
.MONDAY...Northwest winds 10 to 20 knots. Waves subsiding to calm
to 2 feet.
.MONDAY NIGHT...North winds 10 to 20 knots diminishing to 5 to
15 knots by midnight. Waves calm to 2 feet.
.TUESDAY...North winds 5 to 15 knots backing west in the
afternoon. Waves calm to 2 feet.
.TUESDAY NIGHT...West winds 5 to 15 knots. Waves calm to 2 feet.
.WEDNESDAY...West winds 5 to 15 knots. Waves calm to 2 feet.
.WEDNESDAY NIGHT...West winds 5 to 15 knots backing southwest
after midnight. Waves calm to 2 feet.
.THURSDAY...Southwest winds 15 to 25 knots veering north. A
chance of snow showers, possibly mixed with rain. Waves building
to 1 to 3 feet, then subsiding to calm to 2 feet.
.FRIDAY...North winds 15 to 25 knots diminishing to 5 to
15 knots. Waves subsiding to calm to 2 feet.

Note, wave height forecasts are for ice free areas.

$$

LSZ263-020900-
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-
1000 PM EST Sun Feb 1 2026

.REST OF TONIGHT...West winds 10 to 20 knots veering northwest by
midnight. A chance of snow showers. Waves 2 to 4 feet.
.MONDAY...North winds 15 to 25 knots becoming northwest 10 to
20 knots. Waves subsiding to 1 to 3 feet.
.MONDAY NIGHT...North winds 10 to 20 knots. Waves building to
2 to 4 feet, then subsiding to 1 to 3 feet.
.TUESDAY...North winds 5 to 15 knots backing northwest in the
afternoon. Waves subsiding to calm to 2 feet.
.TUESDAY NIGHT...West winds 5 to 15 knots. Waves calm to 2 feet.
.WEDNESDAY...Northwest winds 5 to 15 knots. Waves calm to 2 feet.
.WEDNESDAY NIGHT...West winds 5 to 15 knots becoming southwest
10 to 20 knots after midnight. Waves building to 1 to 3 feet.
.THURSDAY...Southwest winds 15 to 25 knots becoming north 20 to
30 knots. A chance of snow showers. Waves building to 3 to 6 feet
occasionally to 8 feet, then subsiding to 2 to 4 feet.
.FRIDAY...North winds 20 to 30 knots diminishing to 10 to
20 knots. Waves subsiding to calm to 2 feet.

Note, wave height forecasts are for ice free areas.

$$

LSZ264-020900-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
1000 PM EST Sun Feb 1 2026

.REST OF TONIGHT...Southwest winds 10 to 20 knots veering west by
midnight, then becoming northwest 15 to 25 knots late. Snow
showers likely late in the evening, then a chance of snow showers
after midnight. 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.
.MONDAY...North winds 15 to 25 knots backing northwest. A slight
chance of snow showers in the morning. Heavy freezing spray.
Waves building to 4 to 7 feet occasionally to 9 feet, then
subsiding to 3 to 6 feet occasionally to 8 feet.
.MONDAY NIGHT...North winds 15 to 25 knots diminishing to 10 to
20 knots late. Heavy freezing spray in the evening. A slight
chance of snow showers. Waves subsiding to 2 to 4 feet.
.TUESDAY...North winds 10 to 20 knots becoming northwest 5 to
15 knots in the afternoon. A slight chance of snow showers in the
morning. Waves subsiding to calm to 2 feet.
.TUESDAY NIGHT...Northwest winds 5 to 15 knots backing west after
midnight. Waves calm to 2 feet.
.WEDNESDAY...Northwest winds 5 to 15 knots. Waves calm to 2 feet.
.WEDNESDAY NIGHT...Northwest winds 5 to 15 knots becoming
southwest 10 to 20 knots after midnight. Waves building to 1 to
3 feet.
.THURSDAY...Southwest winds 15 to 25 knots becoming north gales
to 35 knots. Snow showers likely, then a chance of snow showers.
Heavy freezing spray. Waves building to 3 to 6 feet occasionally
to 8 feet.
.FRIDAY...North gales to 35 knots diminishing to 15 to 25 knots.
Heavy freezing spray. Waves building to 7 to 10 feet occasionally
to 13 feet, then subsiding to 2 to 4 feet.

Note, wave height forecasts are for ice free areas.

$$

LSZ265-020900-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
1000 PM EST Sun Feb 1 2026

.REST OF TONIGHT...Southwest winds 15 to 25 knots diminishing to
10 to 20 knots by midnight, then becoming west 15 to 25 knots
late. A chance of snow showers. Waves 1 to 3 feet subsiding to
calm to 2 feet.
.MONDAY...Northwest winds 15 to 25 knots increasing to 20 to
30 knots. A slight chance of snow showers. Waves building to 3 to
5 feet occasionally to 7 feet.
.MONDAY NIGHT...Northwest winds 20 to 30 knots diminishing to
15 to 25 knots by midnight. A chance of snow showers. Waves
building to 3 to 6 feet occasionally to 8 feet.
.TUESDAY...Northwest winds 15 to 25 knots diminishing to 10 to
20 knots in the afternoon. A chance of snow showers. Waves
subsiding to 1 to 3 feet.
.TUESDAY NIGHT...Northwest winds 10 to 20 knots backing west
after midnight. Waves subsiding to calm to 2 feet.
.WEDNESDAY...West winds 10 to 20 knots veering northwest in the
afternoon. Waves calm to 2 feet.
.WEDNESDAY NIGHT...Northwest winds 10 to 20 knots backing west
after midnight. Waves calm to 2 feet.
.THURSDAY...Southwest winds 15 to 25 knots becoming northwest
gales to 35 knots. Snow showers likely. Waves building to 6 to
9 feet occasionally to 11 feet.
.FRIDAY...North gales to 35 knots diminishing to 15 to 25 knots.
Heavy freezing spray. Waves building to 9 to 12 feet occasionally
to 15 feet, then subsiding to 3 to 5 feet occasionally to 7 feet.

Note, wave height forecasts are for ice free areas.

$$

LSZ266-020900-
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-
1000 PM EST Sun Feb 1 2026

.REST OF TONIGHT...Southwest winds 20 to 30 knots diminishing to
15 to 25 knots by midnight. Freezing spray late in the evening.
Snow showers likely. Waves 5 to 8 feet occasionally to 10 feet
subsiding to 2 to 4 feet, then building to 3 to 5 feet
occasionally to 7 feet.
.MONDAY...Northwest winds 15 to 25 knots increasing to 20 to
30 knots. Freezing spray. A chance of snow showers. Waves
building to 5 to 8 feet occasionally to 10 feet.
.MONDAY NIGHT...Northwest winds to 30 knots with a few gale force
gusts to 35 knots possible becoming north 20 to 30 knots by
midnight. Heavy freezing spray. A chance of snow showers. Waves
building to 6 to 9 feet occasionally to 11 feet, then subsiding
to 4 to 7 feet occasionally to 9 feet.
.TUESDAY...North winds 15 to 25 knots backing northwest in the
afternoon. Heavy freezing spray in the morning. A chance of snow
showers. Waves subsiding to 2 to 4 feet.
.TUESDAY NIGHT...Northwest winds 10 to 20 knots. A slight chance
of snow showers in the evening. Waves subsiding to calm to
2 feet.
.WEDNESDAY...West winds 10 to 20 knots veering northwest in the
afternoon. Waves building to 1 to 3 feet.
.WEDNESDAY NIGHT...Northwest winds 10 to 20 knots backing west
after midnight. Waves 1 to 3 feet.
.THURSDAY...Southwest winds 15 to 25 knots becoming northwest
gales to 40 knots. Snow showers likely, then a chance of snow
showers. Freezing spray. Waves building to 7 to 10 feet
occasionally to 13 feet.
.FRIDAY...North gales to 40 knots diminishing to 20 to 30 knots.
Heavy freezing spray. A chance of snow showers. Waves building to
10 to 14 feet occasionally to 18 feet, then subsiding to 3 to
6 feet occasionally to 8 feet.

Note, wave height forecasts are for ice free areas.

$$

LSZ267-020900-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
1000 PM EST Sun Feb 1 2026

.REST OF TONIGHT...South winds 15 to 25 knots veering southwest
by midnight. A chance of snow showers. Waves 3 to 6 feet
occasionally to 8 feet building to 4 to 7 feet occasionally to
9 feet, then subsiding to 2 to 4 feet.
.MONDAY...Southwest winds 15 to 25 knots veering west by late
morning, then becoming northwest 20 to 30 knots by mid afternoon.
Snow showers likely in the morning, then a chance of snow showers
in the afternoon. Freezing spray in the afternoon. Waves building
to 5 to 8 feet occasionally to 10 feet.
.MONDAY NIGHT...Northwest winds 20 to 30 knots veering north by
midnight, then diminishing to 15 to 25 knots late. Freezing
spray. A chance of snow showers. Waves subsiding to 3 to 6 feet
occasionally to 8 feet.
.TUESDAY...North winds 15 to 25 knots diminishing to 10 to
20 knots in the afternoon. A chance of snow showers. Waves
subsiding to 1 to 3 feet.
.TUESDAY NIGHT...North winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. A slight chance of snow showers in the
evening. Waves subsiding to calm to 2 feet.
.WEDNESDAY...West winds 5 to 15 knots becoming northwest 10 to
20 knots in the afternoon. Waves building to 1 to 3 feet.
.WEDNESDAY NIGHT...North winds 10 to 20 knots backing west after
midnight. Waves 1 to 3 feet.
.THURSDAY...South winds 15 to 25 knots becoming northwest gales
to 35 knots. Snow showers likely, then a chance of snow showers.
Freezing spray. Waves building to 7 to 10 feet occasionally to
13 feet.
.FRIDAY...North gales to 35 knots diminishing to 20 to 30 knots.
Heavy freezing spray. Waves subsiding to 3 to 5 feet occasionally
to 7 feet.

Note, wave height forecasts are for ice free areas.

$$

LSZ261-020900-
MAFOR 0204/
Superior West 11720 11730 13720 12710 11810. Waves 1 to 3 feet
building to 2 to 4 feet overnight. Waves 1 to 3 feet Monday.
Waves 2 feet or less Monday evening. Wave heights are for ice
free areas.

Superior North Central 11627 11720 11730 11842 12742 11732 11832.
Waves 3 to 5 feet overnight. Waves 3 to 6 feet Monday and Monday
evening.

Superior South Central 11537 11527 11620 11730 11740 13742. Waves
3 to 5 feet subsiding to 1 to 3 feet overnight. Waves 2 to 4 feet
building to 4 to 7 feet Monday. Waves 5 to 8 feet Monday evening.
Wave heights are for ice free areas.

Superior East 11547 11537 11527 11637 11731 13740. Waves 4 to 7
feet subsiding to 3 to 5 feet overnight. Waves 3 to 6 feet
building to 5 to 7 feet Monday. Waves 5 to 8 feet Monday evening.

$$

WFO MQT

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