122
FZUS63 KMQT 280901
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
400 AM EST Sun Dec 28 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...

Deepening low pressure over the Plains early this morning lifts
into the Great Lakes this afternoon. This low deepens to 28.9 inches
as it lifts to near the Straits of Mackinac by Monday morning.
Meanwhile, a strong high pressure of at least 30.6 inches will
spread across the Great Plains as the low lifts into Quebec on
Monday. A 29.7 inch trough dives southeast into the Upper Great
Lakes late Tuesday. Weak ridging of around 30.0 inches on Wednesday
will be followed up by additional 29.6-29.7inch shortwaves skirting
the region the rest of the work week.


LSZ162-282100-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
400 AM EST Sun Dec 28 2025 /300 AM CST Sun Dec 28 2025/

...GALE WARNING IN EFFECT FROM THIS EVENING THROUGH MONDAY
EVENING...
...HEAVY FREEZING SPRAY WARNING IN EFFECT FROM THIS EVENING
THROUGH LATE MONDAY NIGHT...

.EARLY THIS MORNING...North winds 5 to 15 knots. Patchy fog.
Waves calm to 2 feet.
.TODAY...North winds 5 to 15 knots increasing to 20 to 30 knots.
Patchy fog in the morning. A chance of rain showers in the
morning, then snow showers, possibly mixed with rain in the
afternoon. Waves building to 3 to 6 feet occasionally to 8 feet.
.TONIGHT...North gales to 45 knots. Heavy freezing spray. Snow
showers in the evening. A chance of snow showers after midnight.
Waves building to 10 to 14 feet occasionally to 18 feet.
.MONDAY...North gales to 45 knots becoming northwest gales to
40 knots. A slight chance of snow showers in the morning. Heavy
freezing spray. Waves subsiding to 4 to 7 feet occasionally to
9 feet.
.MONDAY NIGHT...Northwest gales to 35 knots diminishing to 15 to
25 knots after midnight. Waves subsiding to calm to 2 feet.
.TUESDAY...West winds 10 to 20 knots increasing to 15 to 25 knots
in the afternoon. Snow showers. Waves building to 2 to 4 feet,
then subsiding to 1 to 3 feet.
.TUESDAY NIGHT...Northwest winds 15 to 25 knots increasing to
20 to 30 knots after midnight. Waves building to 2 to 4 feet.
.WEDNESDAY...Northwest winds 20 to 30 knots. Waves 2 to 4 feet.
.THURSDAY...West winds 20 to 30 knots. Waves building to 3 to
6 feet occasionally to 8 feet, then subsiding to 2 to 4 feet.

Note, wave height forecasts are for ice free areas.

$$

LSZ263-282100-
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 AM EST Sun Dec 28 2025

...STORM WARNING IN EFFECT FROM THIS EVENING THROUGH MONDAY
EVENING...
...HEAVY FREEZING SPRAY WARNING IN EFFECT FROM LATE TONIGHT
THROUGH TUESDAY MORNING...

.EARLY THIS MORNING...Northeast winds 5 to 15 knots. Patchy fog.
Waves 1 to 3 feet subsiding to calm to 2 feet.
.TODAY...Northeast winds 5 to 15 knots increasing to 15 to
25 knots by late morning, then becoming north gales to 35 knots
by mid afternoon. Patchy fog in the morning. A chance of rain
showers. Snow showers, possibly mixed with freezing rain in the
afternoon. Waves building to 5 to 8 feet occasionally to 10 feet.
.TONIGHT...North gales to 45 knots increasing to storm force
winds to 55 knots by midnight. Heavy freezing spray. Snow showers
in the evening. Snow showers likely after midnight. Waves
building to 17 to 22 feet occasionally to 28 feet.
.MONDAY...North storm force winds to 55 knots becoming northwest
gales to 40 knots by mid afternoon. A slight chance of snow
showers in the morning. Heavy freezing spray. Waves subsiding to
8 to 11 feet occasionally to 14 feet.
.MONDAY NIGHT...Northwest gales to 35 knots diminishing to 20 to
30 knots after midnight. Freezing spray. Waves subsiding to 3 to
5 feet occasionally to 7 feet.
.TUESDAY...West winds 15 to 25 knots. A chance of snow showers in
the morning, then snow showers likely in the afternoon. Waves
subsiding to 2 to 4 feet, then building to 3 to 6 feet
occasionally to 8 feet.
.TUESDAY NIGHT...Northwest winds 20 to 30 knots. Heavy freezing
spray. A chance of snow showers. Waves building to 5 to 8 feet
occasionally to 10 feet.
.WEDNESDAY...Northwest winds 20 to 30 knots. Heavy freezing
spray. Waves subsiding to 4 to 8 feet occasionally to 10 feet.
.THURSDAY...West gales to 35 knots. Heavy freezing spray. Waves
building to 5 to 9 feet occasionally to 11 feet.

Note, wave height forecasts are for ice free areas.

$$

LSZ264-282100-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
400 AM EST Sun Dec 28 2025

...STORM WARNING IN EFFECT FROM THIS EVENING THROUGH MONDAY
EVENING...
...HEAVY FREEZING SPRAY WARNING IN EFFECT FROM LATE TONIGHT
THROUGH TUESDAY MORNING...

.EARLY THIS MORNING...Southwest winds 5 to 15 knots. Patchy fog.
Waves 3 to 5 feet occasionally to 7 feet subsiding to 2 to
4 feet.
.TODAY...Northeast winds 5 to 15 knots increasing to gales to
35 knots. Patchy fog. A chance of rain showers. Snow showers
likely, possibly mixed with freezing rain in the afternoon. Waves
subsiding to 1 to 3 feet, then building to 5 to 8 feet
occasionally to 10 feet.
.TONIGHT...North gales to 45 knots increasing to storm force
winds to 60 knots by midnight. Heavy freezing spray. Snow
showers. Waves building to 17 to 22 feet occasionally to 28 feet.
.MONDAY...North storm force winds to 60 knots diminishing to
gales to 45 knots by mid afternoon. Heavy freezing spray. A
slight chance of snow showers. Waves subsiding to 12 to 17 feet
occasionally to 21 feet.
.MONDAY NIGHT...Northwest gales to 45 knots. Heavy freezing
spray. Waves subsiding to 5 to 8 feet occasionally to 10 feet.
.TUESDAY...Northwest winds 15 to 25 knots backing west in the
afternoon. Freezing spray in the morning. Snow showers likely in
the afternoon. Waves subsiding to 3 to 6 feet occasionally to
8 feet.
.TUESDAY NIGHT...Northwest gales to 35 knots. Heavy freezing
spray. A chance of snow showers. Waves building to 8 to 11 feet
occasionally to 14 feet.
.WEDNESDAY...Northwest gales to 35 knots. Heavy freezing spray. A
chance of snow showers. Waves subsiding to 6 to 9 feet
occasionally to 11 feet, then building to 7 to 10 feet
occasionally to 13 feet.
.THURSDAY...Northwest gales to 40 knots. Heavy freezing spray.
Waves building to 7 to 11 feet occasionally to 14 feet.

Note, wave height forecasts are for ice free areas.

$$

LSZ265-282100-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
400 AM EST Sun Dec 28 2025

...STORM WARNING IN EFFECT FROM THIS EVENING THROUGH LATE MONDAY
NIGHT...
...HEAVY FREEZING SPRAY WARNING IN EFFECT FROM LATE TONIGHT
THROUGH TUESDAY MORNING...

.EARLY THIS MORNING...South winds 5 to 15 knots. Patchy fog. A
slight chance of rain showers. Waves 1 to 3 feet.
.TODAY...South winds 5 to 15 knots becoming east 10 to 20 knots
by late morning, then becoming northeast 15 to 25 knots by mid
afternoon. Areas of fog. A slight chance of rain showers in the
morning. Snow showers with rain showers, possibly mixed with
sleet in the afternoon. Waves subsiding to calm to 2 feet, then
building to 2 to 4 feet.
.TONIGHT...Northeast gales to 45 knots becoming north storm force
winds to 60 knots by midnight, then increasing to storm force
winds to 60 knots with a few hurricane force gusts to 65 knots
possible late. Snow showers. Freezing spray after midnight. Waves
building to 22 to 27 feet occasionally to 34 feet.
.MONDAY...North storm force winds to 60 knots becoming northwest
storm force winds to 55 knots by mid afternoon. Heavy freezing
spray. Snow showers likely in the morning. A chance of snow
showers in the afternoon. Waves subsiding to 15 to 20 feet
occasionally to 25 feet.
.MONDAY NIGHT...Northwest gales to 45 knots. Heavy freezing
spray. Waves subsiding to 7 to 10 feet occasionally to 13 feet.
.TUESDAY...Northwest winds 20 to 30 knots backing west in the
afternoon. Freezing spray in the morning. Snow showers likely in
the afternoon. Waves subsiding to 2 to 4 feet, then building to
3 to 5 feet occasionally to 7 feet.
.TUESDAY NIGHT...Northwest gales to 40 knots. Heavy freezing
spray. Snow showers likely. Waves building to 9 to 12 feet
occasionally to 15 feet.
.WEDNESDAY...Northwest gales to 40 knots. Heavy freezing spray.
Snow showers likely. A chance of snow showers. Waves subsiding to
7 to 10 feet occasionally to 13 feet.
.THURSDAY...West gales to 40 knots. Heavy freezing spray. A
chance of snow showers. Waves building to 8 to 11 feet
occasionally to 14 feet, then subsiding to 6 to 9 feet
occasionally to 11 feet.

Note, wave height forecasts are for ice free areas.

$$

LSZ266-282100-
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 AM EST Sun Dec 28 2025

...STORM WARNING IN EFFECT FROM THIS EVENING THROUGH LATE MONDAY
NIGHT...
...HEAVY FREEZING SPRAY WARNING IN EFFECT FROM LATE TONIGHT
THROUGH TUESDAY MORNING...

.EARLY THIS MORNING...South winds 10 to 20 knots. Patchy fog. A
slight chance of rain showers. Waves 3 to 5 feet occasionally to
7 feet subsiding to 2 to 4 feet.
.TODAY...Southeast winds 5 to 15 knots becoming east 10 to
20 knots by late morning, then becoming northeast 20 to 30 knots
by mid afternoon. Patchy fog. A chance of rain showers. Snow
showers in the afternoon. Waves subsiding to calm to 2 feet, then
building to 3 to 5 feet occasionally to 7 feet.
.TONIGHT...Northeast gales to 45 knots becoming north storm force
winds to 60 knots by midnight. A slight chance of rain showers in
the evening. Snow showers. Freezing spray after midnight. Waves
building to 22 to 27 feet occasionally to 34 feet.
.MONDAY...North storm force winds to 60 knots. Heavy freezing
spray. Snow showers in the morning. A chance of snow showers in
the afternoon. Waves subsiding to 20 to 25 feet occasionally to
31 feet.
.MONDAY NIGHT...North storm force winds to 50 knots becoming
northwest gales to 40 knots after midnight. Heavy freezing spray.
A slight chance of snow showers. Waves subsiding to 10 to 14 feet
occasionally to 18 feet.
.TUESDAY...Northwest winds 20 to 30 knots backing west in the
afternoon. Freezing spray. A chance of snow showers. Waves
subsiding to 4 to 7 feet occasionally to 9 feet.
.TUESDAY NIGHT...Northwest gales to 40 knots. Heavy freezing
spray. Snow showers. Waves building to 10 to 14 feet occasionally
to 18 feet.
.WEDNESDAY...Northwest gales to 40 knots. Heavy freezing spray.
Snow showers. A chance of snow showers. Waves building to 11 to
15 feet occasionally to 19 feet, then subsiding to 10 to 14 feet
occasionally to 18 feet.
.THURSDAY...Northwest gales to 40 knots backing west. Heavy
freezing spray. A chance of snow showers. Waves 10 to 14 feet
occasionally to 18 feet.

Note, wave height forecasts are for ice free areas.

$$

LSZ267-282100-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
400 AM EST Sun Dec 28 2025

...STORM WARNING IN EFFECT FROM THIS EVENING THROUGH LATE MONDAY
NIGHT...
...HEAVY FREEZING SPRAY WARNING IN EFFECT FROM LATE TONIGHT
THROUGH TUESDAY MORNING...

.EARLY THIS MORNING...Southeast winds 10 to 20 knots. Patchy fog.
A chance of rain showers. Waves 2 to 4 feet.
.TODAY...Southeast winds 10 to 20 knots backing east by late
morning, then increasing to 15 to 25 knots by mid afternoon.
Patchy fog. A slight chance of rain showers in the morning. Rain
showers, possibly mixed with snow and sleet likely in the
afternoon. Waves subsiding to calm to 2 feet, then building to
2 to 4 feet.
.TONIGHT...Northeast winds 20 to 30 knots increasing to storm
force winds to 50 knots by midnight, then becoming north storm
force winds to 55 knots late. A slight chance of rain showers in
the evening. Snow showers. Freezing spray after midnight. Waves
building to 15 to 20 feet occasionally to 25 feet.
.MONDAY...North storm force winds to 55 knots. Heavy freezing
spray. Snow showers in the morning. A chance of snow showers in
the afternoon. Waves building to 17 to 22 feet occasionally to
28 feet.
.MONDAY NIGHT...North storm force winds to 50 knots becoming
northwest gales to 40 knots after midnight. Heavy freezing spray.
A slight chance of snow showers. Waves subsiding to 10 to 14 feet
occasionally to 18 feet.
.TUESDAY...Northwest winds 20 to 30 knots. Freezing spray. Snow
showers likely in the afternoon. Waves subsiding to 4 to 7 feet
occasionally to 9 feet.
.TUESDAY NIGHT...Northwest winds 20 to 30 knots increasing to
gales to 35 knots after midnight. Freezing spray. Snow showers.
Waves building to 9 to 12 feet occasionally to 15 feet.
.WEDNESDAY...Northwest gales to 35 knots. Heavy freezing spray.
Snow showers. Waves building to 10 to 14 feet occasionally to
18 feet.
.THURSDAY...Northwest gales to 40 knots backing west. Heavy
freezing spray. Snow showers likely. Waves 10 to 14 feet
occasionally to 18 feet.

Note, wave height forecasts are for ice free areas.

$$

LSZ261-281500-
MAFOR 2810/
Superior West...STORM WARNING IN EFFECT...HEAVY FREEZING SPRAY
WARNING IN EFFECT...11800 11110 11120 11147 11857 12867 11877. A
chance of rain showers this afternoon. Waves 2 feet or less
building to 4 to 7 feet today. Waves 6 to 9 feet building to 12
to 16 feet tonight.

Superior North Central...STORM WARNING IN EFFECT...HEAVY FREEZING
SPRAY WARNING IN EFFECT...11500 11110 11120 11137 11157 11167
12877. A chance of light freezing rain this afternoon. Waves 3 to
5 feet subsiding to 1 to 3 feet, then building to 3 to 6 feet
today. Waves 7 to 10 feet building to 16 to 21 feet tonight.

Superior South Central...STORM WARNING IN EFFECT...HEAVY FREEZING
SPRAY WARNING IN EFFECT...11410 11310 11210 11227 11147 11167
11877 11897. Waves 1 to 3 feet today. Waves 4 to 7 feet building
to 18 to 23 feet tonight.

Superior East...STORM WARNING IN EFFECT...HEAVY FREEZING SPRAY
WARNING IN EFFECT...11320 12310 11227 11147 11157 11177 11877. A
chance of rain showers early this morning. Waves 2 to 4 feet
today. Waves 3 to 5 feet building to 13 to 17 feet tonight.

$$

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