045
FZUS63 KMQT 290300
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
1000 PM EST Fri Nov 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...

30.4 inch ridging remains over Lake Superior through early Saturday
while a 29.7 inch low develops over the Colorado Front Range. This
low will maintain intensity as it tracks from the South Plains into
southern Lower Michigan by Sunday morning and then into southern
Quebec by Sunday evening, sending a 30.0 inch trough over the
eastern half of Lake Superior on Sunday. In its wake, 30.6 inch high
pressure moves over the Upper Midwest, sliding south of the Great
Lakes at 30.5 inches on Monday. The high will weaken Tuesday into
Wednesday as 29.7 inch low pressure moves across Ontario and a 29.5
inch Nor`Easter develops over the Mid Atlantic.


LSZ162-290900-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
1000 PM EST Fri Nov 28 2025 /900 PM CST Fri Nov 28 2025/

.REST OF TONIGHT...North winds 10 to 20 knots diminishing to 5 to
15 knots by midnight. A slight chance of snow showers after
midnight. Waves calm to 2 feet.
.SATURDAY...Northeast winds 5 to 15 knots increasing to 10 to
20 knots by mid afternoon. A chance of snow showers. Waves
building to 1 to 3 feet.
.SATURDAY NIGHT...Northeast winds 15 to 25 knots backing north by
midnight. Snow showers likely in the evening, then a chance of
snow showers after midnight. Waves building to 3 to 5 feet
occasionally to 7 feet, then subsiding to 2 to 4 feet.
.SUNDAY...Northwest winds 15 to 25 knots. A slight chance of snow
showers. Waves 2 to 4 feet.
.SUNDAY NIGHT...Northwest winds 10 to 20 knots backing west after
midnight. Waves subsiding to calm to 2 feet, then building to
1 to 3 feet.
.MONDAY...West winds 20 to 30 knots. Waves building to 4 to
7 feet occasionally to 9 feet, then subsiding 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. Waves subsiding to calm to 2 feet.
.TUESDAY...Southwest winds 10 to 20 knots. 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.

$$

LSZ263-290900-
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 Fri Nov 28 2025

.REST OF TONIGHT...North winds 5 to 15 knots. A chance of snow
showers. Waves calm to 2 feet.
.SATURDAY...North winds 5 to 15 knots veering northeast by late
morning, then increasing to 10 to 20 knots by mid afternoon. A
chance of snow showers. Waves building to 1 to 3 feet.
.SATURDAY NIGHT...Northeast winds 15 to 25 knots backing north by
midnight. Snow showers likely in the evening, then a chance of
snow showers after midnight. Waves building to 3 to 6 feet
occasionally to 8 feet.
.SUNDAY...Northwest winds 20 to 30 knots. A chance of snow
showers. Waves building to 5 to 8 feet occasionally to 10 feet,
then subsiding to 3 to 6 feet occasionally to 8 feet.
.SUNDAY NIGHT...Northwest winds 20 to 30 knots becoming west
15 to 25 knots after midnight. A slight chance of snow showers in
the evening. Waves subsiding to 2 to 4 feet.
.MONDAY...West gales to 35 knots. Waves building to 6 to 10 feet
occasionally to 13 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 5 feet occasionally to 7 feet.
.TUESDAY...Southwest winds 10 to 20 knots increasing to 15 to
25 knots. A chance of snow showers. Waves subsiding to 2 to
4 feet, then building to 3 to 5 feet occasionally to 7 feet.
.WEDNESDAY...Northwest winds 20 to 30 knots. 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.

$$

LSZ264-290900-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
1000 PM EST Fri Nov 28 2025

.REST OF TONIGHT...North winds 5 to 15 knots backing northwest by
midnight. A slight chance of snow showers late in the evening.
Waves 2 to 4 feet subsiding to calm to 2 feet.
.SATURDAY...Northwest winds 5 to 15 knots veering northeast by
mid afternoon. A chance of snow showers. Waves calm to 2 feet.
.SATURDAY NIGHT...Northeast winds 10 to 20 knots backing north by
midnight, then increasing to 15 to 25 knots late. A chance of
snow showers. Waves building to 3 to 5 feet occasionally to
7 feet.
.SUNDAY...North winds 20 to 30 knots backing northwest in the
afternoon. A chance of snow showers. Waves building to 5 to
9 feet occasionally to 11 feet.
.SUNDAY NIGHT...Northwest winds 20 to 30 knots becoming west
15 to 25 knots after midnight. A slight chance of snow showers in
the evening. Waves subsiding to 2 to 4 feet.
.MONDAY...West gales to 35 knots. A chance of snow showers. Waves
building to 7 to 10 feet occasionally to 13 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 5 feet occasionally to 7 feet.
.TUESDAY...West winds 10 to 20 knots becoming southwest 15 to
25 knots. A chance of snow showers. Waves subsiding to 2 to
4 feet, then building to 3 to 6 feet occasionally to 8 feet.
.WEDNESDAY...Northwest gales to 35 knots. A chance of snow
showers. Freezing spray. Waves building to 6 to 9 feet
occasionally to 11 feet, then subsiding to 4 to 7 feet
occasionally to 9 feet.

$$

LSZ265-290900-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
1000 PM EST Fri Nov 28 2025

.REST OF TONIGHT...Northwest winds 10 to 20 knots backing west
late. A slight chance of snow showers. Waves 2 to 4 feet
subsiding to calm to 2 feet.
.SATURDAY...West winds 5 to 15 knots backing east by mid
afternoon. A chance of snow showers. Waves calm to 2 feet.
.SATURDAY NIGHT...Northeast winds 10 to 20 knots increasing to
15 to 25 knots by midnight, then becoming north 20 to 30 knots
late. Snow showers. Waves building to 3 to 6 feet occasionally to
8 feet.
.SUNDAY...North gales to 35 knots becoming northwest gales to
40 knots in the afternoon. Snow showers. Waves building to 6 to
10 feet occasionally to 13 feet.
.SUNDAY NIGHT...Northwest gales to 35 knots becoming west 15 to
25 knots after midnight. A chance of snow showers. Waves
subsiding to 2 to 4 feet.
.MONDAY...Southwest winds 20 to 30 knots. A chance of snow
showers. Waves 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 2 to
4 feet.
.TUESDAY...West winds 15 to 25 knots backing southwest. A chance
of snow showers. Waves subsiding to calm to 2 feet, then building
to 1 to 3 feet.
.WEDNESDAY...Northwest gales to 35 knots. Snow showers likely,
then a chance of snow showers. Freezing spray. Waves building to
5 to 8 feet occasionally to 10 feet, then subsiding to 3 to
6 feet occasionally to 8 feet.

$$

LSZ266-290900-
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 Fri Nov 28 2025

.REST OF TONIGHT...Northwest winds 15 to 25 knots diminishing to
5 to 15 knots. A chance of snow showers. Waves 4 to 7 feet
occasionally to 9 feet subsiding to 1 to 3 feet.
.SATURDAY...Northwest winds 5 to 15 knots veering northeast by
mid afternoon. A chance of snow showers. Waves subsiding to calm
to 2 feet.
.SATURDAY NIGHT...East winds 10 to 20 knots becoming north 20 to
30 knots late. Snow showers. Waves building to 3 to 6 feet
occasionally to 8 feet.
.SUNDAY...North gales to 35 knots becoming northwest gales to
40 knots in the afternoon. Snow showers. Waves building to 10 to
14 feet occasionally to 18 feet.
.SUNDAY NIGHT...Northwest gales to 35 knots diminishing to 15 to
25 knots after midnight. Snow showers in the evening, then a
chance of snow showers after midnight. Waves subsiding to 3 to
6 feet occasionally to 8 feet.
.MONDAY...West winds 15 to 25 knots becoming southwest 20 to
30 knots in the afternoon. A chance of snow showers. Waves
building to 7 to 10 feet occasionally to 13 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 backing southwest. A chance
of snow showers. Waves subsiding to 2 to 4 feet, then building to
3 to 6 feet occasionally to 8 feet.
.WEDNESDAY...Northwest gales to 35 knots. Snow showers. Freezing
spray. Waves building to 9 to 12 feet occasionally to 15 feet,
then subsiding to 7 to 10 feet occasionally to 13 feet.

$$

LSZ267-290900-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
1000 PM EST Fri Nov 28 2025

.REST OF TONIGHT...North winds 15 to 25 knots diminishing to 5 to
15 knots late. A chance of snow showers. Waves 4 to 7 feet
occasionally to 9 feet subsiding to 1 to 3 feet.
.SATURDAY...Northeast winds 5 to 15 knots veering south. A chance
of snow showers in the morning, then snow showers in the
afternoon. Waves subsiding to calm to 2 feet.
.SATURDAY NIGHT...Southeast winds 10 to 20 knots becoming east
15 to 25 knots by midnight, then diminishing to 10 to 20 knots
late. Snow showers. Waves building to 1 to 3 feet.
.SUNDAY...North winds 20 to 30 knots becoming northwest gales to
35 knots in the afternoon. Snow showers. Waves building to 9 to
12 feet occasionally to 15 feet.
.SUNDAY NIGHT...Northwest winds 20 to 30 knots diminishing to
15 to 25 knots after midnight. Snow showers. Waves subsiding to
3 to 6 feet occasionally to 8 feet.
.MONDAY...West winds 15 to 25 knots becoming southwest 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
4 to 7 feet occasionally to 9 feet.
.MONDAY NIGHT...Southwest winds 20 to 30 knots veering west after
midnight. Snow showers likely. Waves subsiding to 3 to 6 feet
occasionally to 8 feet.
.TUESDAY...West winds 15 to 25 knots backing southwest. Snow
showers likely. Waves subsiding to 2 to 4 feet, then building to
3 to 6 feet occasionally to 8 feet.
.WEDNESDAY...West winds 20 to 30 knots veering northwest. Snow
showers. Freezing spray. Waves building to 7 to 11 feet
occasionally to 14 feet.

$$

LSZ261-290900-
MAFOR 2904/
Superior West 12800 11100 12110 12120 11137. Waves 1 foot or less
overnight. Waves 1 to 3 feet Saturday. Waves 2 to 4 feet Saturday
evening.

Superior North Central 12710 12700 11800 12110 11127. Waves 1 to
3 feet.

Superior South Central 11720 12710 11700 11600 11100 11217 11227.
Waves 3 to 5 feet subsiding to 1 to 3 feet overnight. Waves 1 to
3 feet Saturday and Saturday evening.

Superior East 11820 11810 11800 11100 11510 11310 12327. Waves 3
to 6 feet subsiding to 2 to 4 feet overnight. Waves 1 to 3 feet
Saturday and Saturday evening.

$$

WFO MQT

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weather.gov/greatlakes