700
FZUS63 KMQT 281501
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
1000 AM 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...

A 29.5 inch low over Quebec will continue to push away from the area
as 30.5 inch ridging expands over the Upper Mississippi River
Valley. Meanwhile a 29.7 inch Colorado Low will develop today and
will move over Oklahoma at 29.8 inches by early Saturday. This low
will  track northeast into the southern Great Lakes Basin by early
Sunday morning at 29.8 inches, reaching the southern Ontario/Quebec
border Sunday evening. In its wake, 30.6 inch high pressure moves
over the Upper Midwest, sliding south of the Great Lakes at 30.4
inches Monday. The high is eroded Tuesday into Wednesday as a low
pressure of 29.6 inches tracks through southern Ontario and a 29.5
inch Nor`Easter off the coast of the Chesapeake Bay develops.


LSZ162-282100-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
1000 AM EST Fri Nov 28 2025 /900 AM CST Fri Nov 28 2025/

.REST OF TODAY...Northwest winds 15 to 25 knots diminishing to
10 to 20 knots. Waves 1 to 3 feet subsiding to calm to 2 feet.
.TONIGHT...North winds 5 to 15 knots. A slight chance of snow
showers after midnight. 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 calm to 2 feet.
.SATURDAY NIGHT...North winds 10 to 20 knots increasing to 15 to
25 knots after midnight. A chance of snow showers. Waves building
to 2 to 4 feet.
.SUNDAY...Northwest winds 15 to 25 knots. A slight chance of snow
showers. Waves subsiding to 1 to 3 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...Southwest winds 15 to 25 knots veering west. Waves
building to 3 to 6 feet occasionally to 8 feet, then subsiding to
1 to 3 feet.
.TUESDAY...Southwest winds 10 to 20 knots veering west. A chance
of snow showers. Waves subsiding to calm to 2 feet.

$$

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-
1000 AM EST Fri Nov 28 2025

.REST OF TODAY...Northwest winds 15 to 25 knots diminishing to
10 to 20 knots by mid afternoon. A slight chance of snow showers
late in the morning. Waves 3 to 5 feet occasionally to 7 feet
subsiding to calm to 2 feet.
.TONIGHT...Northwest winds 5 to 15 knots veering north by
midnight. A chance of snow showers. Waves calm to 2 feet.
.SATURDAY...North 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 becoming north
15 to 25 knots after midnight. A chance of snow showers. Waves
building to 3 to 5 feet occasionally to 7 feet.
.SUNDAY...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.
.SUNDAY NIGHT...Northwest winds 15 to 25 knots backing west after
midnight. Waves subsiding to 2 to 4 feet, then building to 3 to
5 feet occasionally to 7 feet.
.MONDAY...Southwest winds 20 to 30 knots veering west. Waves
building to 5 to 8 feet occasionally to 10 feet, then subsiding
to 3 to 5 feet occasionally to 7 feet.
.TUESDAY...Southwest winds 10 to 20 knots becoming west 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.

$$

LSZ264-282100-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
1000 AM EST Fri Nov 28 2025

.REST OF TODAY...Northwest winds 15 to 25 knots. A chance of snow
showers. Waves 5 to 8 feet occasionally to 10 feet subsiding to
3 to 5 feet occasionally to 7 feet.
.TONIGHT...Northwest winds 10 to 20 knots diminishing to 5 to
15 knots by midnight. A slight chance of snow showers. Waves
subsiding to calm to 2 feet.
.SATURDAY...Northwest winds 5 to 15 knots veering north. A slight
chance of snow showers in the afternoon. Waves calm to 2 feet.
.SATURDAY NIGHT...Northeast winds 5 to 15 knots becoming north
15 to 25 knots after midnight. 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 4 to
8 feet occasionally to 10 feet.
.SUNDAY NIGHT...Northwest winds 20 to 30 knots becoming west
15 to 25 knots after midnight. Waves subsiding 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, then
subsiding to 3 to 6 feet occasionally to 8 feet.
.TUESDAY...West 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.

$$

LSZ265-282100-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
1000 AM EST Fri Nov 28 2025

.REST OF TODAY...Northwest winds to 30 knots with a few gale
force gusts to 35 knots possible diminishing to 20 to 30 knots by
mid afternoon. A chance of snow showers. Waves 5 to 8 feet
occasionally to 10 feet subsiding to 3 to 6 feet occasionally to
8 feet.
.TONIGHT...Northwest winds 10 to 20 knots. A chance of snow
showers. Waves subsiding to calm to 2 feet.
.SATURDAY...Northwest winds 5 to 15 knots becoming northeast
10 to 20 knots by mid afternoon. A chance of snow showers. Waves
calm to 2 feet.
.SATURDAY NIGHT...Northeast winds 10 to 20 knots becoming north
15 to 25 knots after midnight. Snow showers. Waves building to
2 to 4 feet.
.SUNDAY...North gales to 35 knots backing northwest in the
afternoon. Snow showers. Waves building to 5 to 8 feet
occasionally to 10 feet.
.SUNDAY NIGHT...Northwest winds 20 to 30 knots becoming west
15 to 25 knots after midnight. A chance of snow showers. Waves
subsiding to 2 to 4 feet.
.MONDAY...Southwest winds 15 to 25 knots. A chance of snow
showers. Waves subsiding to 1 to 3 feet, then building to 2 to
4 feet.
.TUESDAY...Southwest winds 15 to 25 knots. A chance of snow
showers. Waves subsiding to calm to 2 feet, then building to 1 to
3 feet.

$$

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-
1000 AM EST Fri Nov 28 2025

.REST OF TODAY...Northwest winds to 30 knots with a few gale
force gusts to 35 knots possible diminishing to 20 to 30 knots by
mid afternoon. Snow showers likely late in the morning, then a
chance of snow showers in the afternoon. Waves 8 to 11 feet
occasionally to 14 feet subsiding to 6 to 9 feet occasionally to
11 feet.
.TONIGHT...Northwest winds 15 to 25 knots diminishing to 10 to
20 knots by midnight. A chance of snow showers. Waves subsiding
to 2 to 4 feet.
.SATURDAY...Northwest winds 5 to 15 knots becoming northeast
10 to 20 knots by mid afternoon. A chance of snow showers in the
morning, then snow showers in the afternoon. Waves subsiding to
calm to 2 feet.
.SATURDAY NIGHT...East winds 10 to 20 knots becoming northeast
15 to 25 knots after midnight. Snow showers. Waves building to
2 to 4 feet.
.SUNDAY...North winds 20 to 30 knots becoming northwest gales to
35 knots in the afternoon. Snow showers. Waves building to 8 to
11 feet occasionally to 14 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...Southwest winds 15 to 25 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.
.TUESDAY...Southwest winds 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.

$$

LSZ267-282100-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
1000 AM EST Fri Nov 28 2025

.REST OF TODAY...Northwest winds to 30 knots with a few gale
force gusts to 35 knots possible diminishing to 20 to 30 knots by
mid afternoon. A chance of snow showers. Waves 8 to 11 feet
occasionally to 14 feet subsiding to 5 to 8 feet occasionally to
10 feet.
.TONIGHT...North winds 20 to 30 knots diminishing to 10 to
20 knots. A chance of snow showers. Waves subsiding to 2 to
4 feet.
.SATURDAY...North winds 5 to 15 knots becoming south 10 to
20 knots. Snow showers. Waves subsiding to calm to 2 feet.
.SATURDAY NIGHT...Southeast winds 10 to 20 knots backing east
after midnight. Snow showers. Waves calm to 2 feet.
.SUNDAY...North winds 15 to 25 knots becoming northwest 20 to
30 knots in the afternoon. Snow showers. Waves building to 7 to
10 feet occasionally to 13 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...Southwest winds 15 to 25 knots. Snow showers likely.
Waves subsiding to 3 to 5 feet occasionally to 7 feet.
.TUESDAY...Southwest winds 15 to 25 knots. Snow showers likely.
Waves subsiding to 2 to 4 feet, then building to 3 to 5 feet
occasionally to 7 feet.

$$

LSZ261-282100-
MAFOR 2816/
Superior West 11720 13710 13800 11100. Waves 2 to 4 feet
subsiding to 1 to 3 feet this afternoon. Waves 2 feet or less
tonight and Saturday morning.

Superior North Central 11740 12730 11720 12710 12700. A chance of
snow showers late this morning. Waves 4 to 7 feet subsiding to 3
to 6 feet this afternoon. Waves 3 to 5 feet subsiding to 1 to 2
feet tonight. Waves 1 to 2 feet Saturday morning.

Superior South Central 12740 11730 11720 12710 12700. A chance of
snow showers this afternoon and tonight. Waves 5 to 9 feet this
afternoon. Waves 4 to 7 feet subsiding to 1 to 3 feet tonight.
Waves 1 to 3 feet Saturday morning.

Superior East 12740 11730 11830 11820 11810 11800 11707. Waves 6
to 10 feet this afternoon. Waves 5 to 8 feet subsiding to 2 to 4
feet tonight. Waves 2 to 3 feet Saturday morning.

$$

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