015
FZUS63 KMQT 222101
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
400 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...

Ridging will increase to 30.3 inches across Lake Superior tonight as
a 29.6 low departs into northern Quebec. 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-
400 PM EST Thu Jan 22 2026 /300 PM CST Thu Jan 22 2026/

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

.LATE THIS AFTERNOON...Northwest winds to 30 knots with a few
gale force gusts to 35 knots possible. Heavy freezing spray. A
slight chance of snow. Waves 6 to 9 feet occasionally to 11 feet
building to 7 to 10 feet occasionally to 13 feet.
.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. Waves subsiding
to 4 to 7 feet occasionally to 9 feet.
.FRIDAY...Northwest winds 15 to 25 knots. A chance of snow. 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 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-
400 PM EST Thu Jan 22 2026

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

.LATE THIS AFTERNOON...Northwest winds 20 to 30 knots. Heavy
freezing spray. Snow likely. Waves 8 to 11 feet occasionally to
14 feet building to 9 to 12 feet occasionally to 15 feet.
.TONIGHT...Northwest winds 20 to 30 knots. Heavy freezing spray.
Snow likely. Waves 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 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 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-
400 PM EST Thu Jan 22 2026

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

.LATE THIS AFTERNOON...Northwest winds 20 to 30 knots. Heavy
freezing spray. Snow likely. Waves 7 to 11 feet occasionally to
13 feet.
.TONIGHT...Northwest winds 20 to 30 knots. Heavy freezing spray.
Snow likely. Waves subsiding to 7 to 10 feet occasionally to
13 feet, then building to 8 to 11 feet occasionally to 14 feet.
.FRIDAY...Northwest winds to 30 knots with a few gale force gusts
to 35 knots possible diminishing to 20 to 30 knots. Heavy
freezing spray. Snow 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 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. 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-
400 PM EST Thu Jan 22 2026

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

.LATE THIS AFTERNOON...Northwest gales to 35 knots. Heavy
freezing spray. Snow. Waves 4 to 8 feet occasionally to 10 feet.
.TONIGHT...Northwest gales to 35 knots. Heavy freezing spray.
Snow likely. Waves building to 6 to 10 feet occasionally to
13 feet.
.FRIDAY...Northwest gales to 40 knots. Heavy freezing spray. Snow
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 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. 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-
400 PM EST Thu Jan 22 2026

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

.LATE THIS AFTERNOON...Northwest gales to 35 knots. Heavy
freezing spray. Snow. Waves 8 to 11 feet occasionally to 14 feet.
.TONIGHT...Northwest gales to 35 knots. Heavy freezing spray.
Snow. Waves building to 10 to 14 feet occasionally to 18 feet,
then subsiding to 9 to 12 feet occasionally to 15 feet.
.FRIDAY...Northwest gales to 40 knots. Heavy freezing spray.
Snow. 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.
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. Waves 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-
400 PM EST Thu Jan 22 2026

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

.LATE THIS AFTERNOON...Northwest gales to 35 knots. Heavy
freezing spray. Snow. Waves 8 to 11 feet occasionally to 14 feet.
.TONIGHT...Northwest gales to 35 knots becoming north 20 to
30 knots late. Heavy freezing spray. Snow. Waves building to
10 to 14 feet occasionally to 18 feet, then subsiding to 9 to
12 feet occasionally to 15 feet.
.FRIDAY...North winds 20 to 30 knots backing northwest. Heavy
freezing spray. Snow. 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 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. 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.

$$

LSZ261-230300-
MAFOR 2222/
Superior West...HEAVY FREEZING SPRAY WARNING IN EFFECT...13742
11732 11742 13737. Waves 7 to 11 feet subsiding to 5 to 9 feet
tonight. Waves 5 to 8 feet subsiding to 3 to 6 feet Friday.

Superior North Central...HEAVY FREEZING SPRAY WARNING IN EFFECT...
14747 12757 12747. Waves 6 to 10 feet building to 7 to 11 feet
tonight. Waves 6 to 10 feet subsiding to 5 to 8 feet Friday.

Superior South Central...GALE WARNING IN EFFECT...HEAVY FREEZING
SPRAY WARNING IN EFFECT...13747 14757 11747. Waves 5 to 8 feet
building to 9 to 12 feet tonight. Waves 8 to 12 feet subsiding to
6 to 10 feet Friday.

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

$$

WFO MQT

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

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weather.gov/greatlakes