757
FZUS63 KMQT 300256
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
956 PM EST Sat Nov 29 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...

29.8 inch low pressure currently over Illinois tracks over southern
Michigan into Sunday morning. The low will reach Georgian Bay at
29.7 inches Sunday afternoon while 30.6 inch high pressure expands
over the Northern Plains. As the low quickly moves to the mouth of
the St Lawrence River Monday morning, the high will weaken slightly
to 30.5 inches just southwest of the Great Lakes. This high weakens
to 30.3 inches over the Lower Great Lakes Monday evening while a
weak 30.0 inch trough descends over the lake from northern Ontario.
After the trough briefly deepens to 29.9 inches, a weak 30.0 inch
ridge moves over the lake Tuesday morning as a 29.7 inch Clipper Low
forms over Saskatchewan. The low weakens slightly to 29.8 inches
Tuesday evening as it approaches Lake Superior. By Wednesday
afternoon, the low will deepen to 29.6 inches south of James Bay
while a 30.5 inch high builds over the High Plains. As the low
departs to the east, the high shifts over the Central Plains
Thursday morning, moving south of the Great Lakes Thursday evening.


LSZ162-300900-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
956 PM EST Sat Nov 29 2025 /856 PM CST Sat Nov 29 2025/

.REST OF TONIGHT...Northeast winds 10 to 20 knots increasing to
20 to 30 knots by midnight, then backing north late. A chance of
snow showers. Waves 3 to 5 feet occasionally to 7 feet building
to 6 to 9 feet occasionally to 11 feet.
.SUNDAY...North winds 15 to 25 knots backing northwest. Waves
subsiding to 2 to 4 feet.
.SUNDAY NIGHT...Northwest winds 10 to 20 knots backing west by
midnight. Waves subsiding to calm to 2 feet, then building to
1 to 3 feet.
.MONDAY...West winds 20 to 30 knots backing southwest in the
afternoon. A slight chance of snow showers in the afternoon.
Waves building to 3 to 6 feet occasionally to 8 feet.
.MONDAY NIGHT...West winds 15 to 25 knots diminishing to 10 to
20 knots after midnight. A slight chance of snow showers in the
evening. Waves subsiding to calm to 2 feet.
.TUESDAY...West winds 10 to 20 knots backing southwest in the
afternoon. Waves calm to 2 feet.
.TUESDAY NIGHT...West winds 15 to 25 knots veering northwest
after midnight. A chance of snow showers. Waves building to 1 to
3 feet.
.WEDNESDAY...Northwest winds 15 to 25 knots. Waves building to
2 to 4 feet, then subsiding to 1 to 3 feet.
.THURSDAY...Southwest winds 20 to 30 knots becoming west 15 to
25 knots. A chance of snow showers. Waves building to 3 to 5 feet
occasionally to 7 feet, then subsiding to 2 to 4 feet.

$$

LSZ263-300900-
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-
956 PM EST Sat Nov 29 2025

.REST OF TONIGHT...Northeast winds 15 to 25 knots increasing to
20 to 30 knots by midnight, then backing north late. Snow showers
likely late in the evening, then a chance of snow showers after
midnight. Waves 2 to 4 feet building to 6 to 9 feet occasionally
to 11 feet.
.SUNDAY...North winds 20 to 30 knots becoming northwest 15 to
25 knots by mid afternoon. A slight chance of snow showers in the
morning. Waves subsiding to 3 to 5 feet occasionally to 7 feet.
.SUNDAY NIGHT...Northwest winds 10 to 20 knots backing west by
midnight, then increasing to 15 to 25 knots late. Waves subsiding
to 1 to 3 feet, then building to 3 to 5 feet occasionally to
7 feet.
.MONDAY...West winds 20 to 30 knots becoming southwest gales to
35 knots in the afternoon. A slight chance of snow showers. Waves
building to 5 to 8 feet occasionally to 10 feet.
.MONDAY NIGHT...West winds 15 to 25 knots. A chance of snow
showers. Waves subsiding to 2 to 4 feet.
.TUESDAY...West winds 10 to 20 knots backing southwest in the
afternoon. Waves subsiding to 1 to 3 feet.
.TUESDAY NIGHT...West winds 10 to 20 knots increasing to 20 to
30 knots after midnight. A chance of snow showers in the evening,
then snow showers likely after midnight. Waves building to 3 to
5 feet occasionally to 7 feet.
.WEDNESDAY...Northwest winds 20 to 30 knots. A chance of snow
showers. Freezing spray. Waves building to 3 to 6 feet
occasionally to 8 feet.
.THURSDAY...West winds 20 to 30 knots. Freezing spray. A chance
of snow showers. Waves building to 3 to 6 feet occasionally to
8 feet.

$$

LSZ264-300900-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
956 PM EST Sat Nov 29 2025

.REST OF TONIGHT...Northeast winds 10 to 20 knots increasing to
20 to 30 knots. A chance of snow showers. Waves 1 to 3 feet
building to 5 to 8 feet occasionally to 10 feet.
.SUNDAY...North winds 20 to 30 knots backing northwest by mid
afternoon. A chance of snow showers in the morning. Waves
subsiding to 4 to 8 feet occasionally to 10 feet.
.SUNDAY NIGHT...Northwest winds 15 to 25 knots becoming west
10 to 20 knots by midnight, then increasing to 15 to 25 knots
late. Waves subsiding to 2 to 4 feet, then building to 3 to
5 feet occasionally to 7 feet.
.MONDAY...West winds 20 to 30 knots. A chance of snow showers.
Waves building to 5 to 8 feet occasionally to 10 feet.
.MONDAY NIGHT...West winds 15 to 25 knots. A chance of snow
showers. Waves subsiding to 2 to 4 feet.
.TUESDAY...West winds 10 to 20 knots. Waves subsiding to 1 to
3 feet.
.TUESDAY NIGHT...West winds 10 to 20 knots increasing to 20 to
30 knots after midnight. A chance of snow showers in the evening,
then snow showers likely after midnight. Waves building to 3 to
6 feet occasionally to 8 feet.
.WEDNESDAY...Northwest gales to 35 knots. Freezing spray. A
chance of snow showers. Waves building to 4 to 7 feet
occasionally to 9 feet, then subsiding to 3 to 6 feet
occasionally to 8 feet.
.THURSDAY...West winds 20 to 30 knots. Freezing spray. A chance
of snow showers. Waves building to 4 to 7 feet occasionally to
9 feet.

$$

LSZ265-300900-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
956 PM EST Sat Nov 29 2025

...GALE WARNING IN EFFECT FROM 4 AM EST SUNDAY THROUGH SUNDAY
EVENING...

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

$$

LSZ266-300900-
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-
956 PM EST Sat Nov 29 2025

...GALE WARNING IN EFFECT FROM 7 AM EST SUNDAY THROUGH SUNDAY
EVENING...

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

$$

LSZ267-300900-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
956 PM EST Sat Nov 29 2025

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

.REST OF TONIGHT...Southeast winds 10 to 20 knots becoming east
15 to 25 knots by midnight, then increasing to 20 to 30 knots
late. Snow showers. Waves 1 to 3 feet building to 3 to 6 feet
occasionally to 8 feet.
.SUNDAY...Northeast winds 20 to 30 knots becoming north gales to
35 knots. A chance of snow showers. Waves building to 6 to 9 feet
occasionally to 11 feet.
.SUNDAY NIGHT...Northwest winds 20 to 30 knots diminishing to
15 to 25 knots by midnight, then backing west late. Snow showers
in the evening, then a chance of snow showers after midnight.
Waves subsiding to 3 to 5 feet occasionally to 7 feet.
.MONDAY...Southwest winds 15 to 25 knots increasing to 20 to
30 knots in the afternoon. Snow showers likely in the morning,
then a chance of snow showers in the afternoon. Waves building to
3 to 6 feet occasionally to 8 feet.
.MONDAY NIGHT...Southwest winds 20 to 30 knots veering west after
midnight. Snow showers likely. Waves subsiding to 3 to 5 feet
occasionally to 7 feet.
.TUESDAY...West winds 15 to 25 knots. Snow showers likely in the
morning, then a chance of snow showers in the afternoon. Waves
subsiding to 2 to 4 feet.
.TUESDAY NIGHT...Southwest winds 15 to 25 knots becoming west
20 to 30 knots after midnight. A chance of snow showers in the
evening, then snow showers after midnight. Waves subsiding to
1 to 3 feet, then building to 3 to 5 feet occasionally to 7 feet.
.WEDNESDAY...Northwest gales to 35 knots. Snow showers. Freezing
spray. Waves building to 5 to 9 feet occasionally to 11 feet.
.THURSDAY...West winds 20 to 30 knots backing southwest. Freezing
spray. Snow showers. Waves subsiding to 3 to 6 feet occasionally
to 8 feet.

$$

LSZ261-300900-
MAFOR 3004/
Superior West 11140 13840 13730 11720. A chance of snow showers
overnight. Waves 5 to 8 feet overnight. Waves 5 to 8 feet
subsiding to 3 to 6 feet Sunday. Waves 3 to 5 feet subsiding to 1
to 3 feet Sunday evening.

Superior North Central 11137 12140 12840 12740 11730. Waves 2 to
3 feet building to 4 to 7 feet overnight. Waves 5 to 8 feet
Sunday. Waves 4 to 7 feet subsiding to 3 to 6 feet Sunday
evening.

Superior South Central...GALE WARNING IN EFFECT...11227 11137
11157 12850 12750 11740. Waves 2 to 3 feet building to 3 to 6
feet overnight. Waves 6 to 10 feet Sunday. Waves 5 to 9 feet
Sunday evening.

Superior East...GALE WARNING IN EFFECT...11327 11237 11137 11140
12840 12747. Waves 3 to 5 feet overnight. Waves 5 to 8 feet
Sunday. Waves 6 to 9 feet Sunday evening.

$$

WFO MQT

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weather.gov/greatlakes