297
FZUS63 KMQT 230300
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
1000 PM EST Thu Jan 22 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...

High pressure will gradually increase to 30.6 inches over the lake
through Saturday as a 31.1 inch high currently over the Canadian
Prairies slides southeast to the Upper Mississippi River Valley at
30.9 inches. Remnant ridging of at least 30.3 inches remains over
Lake Superior through Sunday as high pressure gradually weakens. A
29.8 inch trough will cross the lake Monday night, followed by
ridging of around 30.1 inches during the early to middle part of
next week.


LSZ162-230900-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
1000 PM EST Thu Jan 22 2026 /900 PM CST Thu Jan 22 2026/

...HEAVY FREEZING SPRAY WARNING IN EFFECT THROUGH FRIDAY
AFTERNOON...

.REST OF TONIGHT...Northwest winds to 30 knots with a few gale
force gusts to 35 knots possible diminishing to 20 to 30 knots by
midnight. Heavy freezing spray. A chance of snow showers. Waves
7 to 10 feet occasionally to 13 feet subsiding to 4 to 7 feet
occasionally to 9 feet.
.FRIDAY...Northwest winds 15 to 25 knots. A chance of snow
showers. Waves subsiding to 2 to 4 feet.
.FRIDAY NIGHT...Northwest winds 10 to 20 knots diminishing to
5 to 15 knots late. A slight chance of snow showers in the
evening. Waves subsiding to calm to 2 feet.
.SATURDAY...West winds 5 to 15 knots becoming southwest 10 to
20 knots in the afternoon. Waves calm to 2 feet.
.SATURDAY NIGHT...West winds 5 to 15 knots. Waves calm to 2 feet.
.SUNDAY...Northwest winds 5 to 15 knots. Waves calm to 2 feet.
.SUNDAY NIGHT...Northwest winds 10 to 20 knots. Waves calm to
2 feet.
.MONDAY...West winds 15 to 25 knots. Waves building to 2 to
4 feet, then subsiding to 1 to 3 feet.
.TUESDAY...Northwest winds 10 to 20 knots. Waves subsiding to
calm to 2 feet.

Note, wave height forecasts are for ice free areas.

$$

LSZ263-230900-
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 Thu Jan 22 2026

...HEAVY FREEZING SPRAY WARNING IN EFFECT THROUGH FRIDAY
EVENING...

.REST OF TONIGHT...Northwest winds 20 to 30 knots. Heavy freezing
spray. Snow showers likely. Waves 8 to 11 feet occasionally to
14 feet subsiding to 6 to 9 feet occasionally to 11 feet.
.FRIDAY...Northwest winds 20 to 30 knots diminishing to 15 to
25 knots. Heavy freezing spray. Snow showers likely. Waves
subsiding to 3 to 6 feet occasionally to 8 feet.
.FRIDAY NIGHT...Northwest winds 15 to 25 knots diminishing to
5 to 15 knots. A chance of snow showers in the evening. Waves
subsiding to 1 to 3 feet.
.SATURDAY...West winds 5 to 15 knots. Waves subsiding to calm to
2 feet.
.SATURDAY NIGHT...Southwest winds 5 to 15 knots veering west
after midnight. Waves calm to 2 feet.
.SUNDAY...Northwest winds 5 to 15 knots. Waves calm to 2 feet.
.SUNDAY NIGHT...Northwest winds 5 to 15 knots increasing to 10 to
20 knots after midnight. Waves building to 1 to 3 feet.
.MONDAY...West winds 20 to 30 knots. Heavy freezing spray. Waves
building to 3 to 6 feet occasionally to 8 feet.
.TUESDAY...Northwest winds 15 to 25 knots. Waves subsiding to
2 to 4 feet.

Note, wave height forecasts are for ice free areas.

$$

LSZ264-230900-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
1000 PM EST Thu Jan 22 2026

...HEAVY FREEZING SPRAY WARNING IN EFFECT THROUGH LATE FRIDAY
NIGHT...

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

Note, wave height forecasts are for ice free areas.

$$

LSZ265-230900-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
1000 PM EST Thu Jan 22 2026

...GALE WARNING IN EFFECT THROUGH FRIDAY AFTERNOON...
...HEAVY FREEZING SPRAY WARNING IN EFFECT THROUGH LATE FRIDAY
NIGHT...

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

Note, wave height forecasts are for ice free areas.

$$

LSZ266-230900-
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 Thu Jan 22 2026

...GALE WARNING IN EFFECT THROUGH FRIDAY AFTERNOON...
...HEAVY FREEZING SPRAY WARNING IN EFFECT THROUGH SATURDAY
MORNING...

.REST OF TONIGHT...Northwest gales to 40 knots. Heavy freezing
spray. Snow showers. Waves 10 to 14 feet occasionally to 18 feet
subsiding to 9 to 12 feet occasionally to 15 feet, then building
to 10 to 14 feet occasionally to 18 feet.
.FRIDAY...Northwest gales to 40 knots. Heavy freezing spray. Snow
showers. Waves subsiding to 7 to 10 feet occasionally to 13 feet.
.FRIDAY NIGHT...Northwest winds 20 to 30 knots diminishing to
15 to 25 knots late. Heavy freezing spray. A chance of snow
showers. Waves subsiding to 3 to 6 feet occasionally to 8 feet.
.SATURDAY...West winds 10 to 20 knots. A chance of snow. Waves
subsiding to 1 to 3 feet.
.SATURDAY NIGHT...Southwest winds 10 to 20 knots. A slight chance
of snow. Waves subsiding to calm to 2 feet, then building to 1 to
3 feet.
.SUNDAY...West winds 10 to 20 knots. A chance of snow. Waves
building to 2 to 4 feet.
.SUNDAY NIGHT...Northwest winds 15 to 25 knots. A chance of snow.
Waves building to 3 to 5 feet occasionally to 7 feet.
.MONDAY...West winds 20 to 30 knots. Heavy freezing spray. A
chance of snow. Waves building to 5 to 8 feet occasionally to
10 feet.
.TUESDAY...Northwest winds 20 to 30 knots. Heavy freezing spray.
A chance of snow. Waves subsiding to 4 to 7 feet occasionally to
9 feet.

Note, wave height forecasts are for ice free areas.

$$

LSZ267-230900-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
1000 PM EST Thu Jan 22 2026

...GALE WARNING IN EFFECT THROUGH FRIDAY AFTERNOON...
...HEAVY FREEZING SPRAY WARNING IN EFFECT THROUGH SATURDAY
MORNING...

.REST OF TONIGHT...Northwest gales to 35 knots diminishing to
20 to 30 knots late. Heavy freezing spray. Snow showers. Waves
10 to 14 feet occasionally to 18 feet subsiding to 9 to 12 feet
occasionally to 15 feet.
.FRIDAY...Northwest winds 20 to 30 knots. Heavy freezing spray.
Snow showers. Waves subsiding to 7 to 10 feet occasionally to
13 feet.
.FRIDAY NIGHT...Northwest winds 20 to 30 knots diminishing to
10 to 20 knots. Heavy freezing spray. Snow showers likely in the
evening. A slight chance of snow after midnight. Waves subsiding
to 3 to 6 feet occasionally to 8 feet.
.SATURDAY...Northwest winds 10 to 20 knots backing west in the
afternoon. A chance of snow. Waves subsiding to 1 to 3 feet.
.SATURDAY NIGHT...Southwest winds 10 to 20 knots. A slight chance
of snow. Waves 1 to 3 feet.
.SUNDAY...South winds 10 to 20 knots veering west in the
afternoon. Waves building to 2 to 4 feet.
.SUNDAY NIGHT...Northwest winds 10 to 20 knots increasing to
15 to 25 knots after midnight. A chance of snow. Waves building
to 3 to 5 feet occasionally to 7 feet.
.MONDAY...West winds 15 to 25 knots increasing to 20 to 30 knots.
Heavy freezing spray. A chance of snow. Waves building to 5 to
8 feet occasionally to 10 feet.
.TUESDAY...West winds 20 to 30 knots becoming northwest 15 to
25 knots. Freezing spray. A chance of snow. Waves subsiding to
4 to 7 feet occasionally to 9 feet.

Note, wave height forecasts are for ice free areas.

$$

LSZ261-230900-
MAFOR 2304/
Superior West...HEAVY FREEZING SPRAY WARNING IN EFFECT...13747
12737 12730 11720. Waves 5 to 9 feet overnight. Waves 5 to 8 feet
subsiding to 3 to 6 feet Friday. Waves 3 to 5 feet subsiding to 2
to 4 feet Friday evening.

Superior North Central...HEAVY FREEZING SPRAY WARNING IN EFFECT...
12747 12757 13747 11742. Waves 7 to 11 feet overnight. Waves 6 to
10 feet subsiding to 5 to 8 feet Friday. Waves 4 to 6 feet Friday
evening.

Superior South Central...GALE WARNING IN EFFECT...HEAVY FREEZING
SPRAY WARNING IN EFFECT...12747 13757 12747 11742. Waves 7 to 10
feet building to 9 to 12 feet overnight. Waves 8 to 12 feet
subsiding to 6 to 10 feet Friday. Waves 5 to 8 feet Friday
evening.

Superior East...GALE WARNING IN EFFECT...HEAVY FREEZING SPRAY
WARNING IN EFFECT...16747. Waves 9 to 13 feet overnight. Waves 8
to 12 feet subsiding to 6 to 10 feet Friday. Waves 6 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