724
FZUS63 KMQT 272101
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
400 PM EST Thu Nov 27 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...

Lake Superior will spend the rest of Thanksgiving between a 30.6
inch high over the Dakotas and a 29.4 inch low over Quebec. By
Friday, the high will weaken slightly to 30.5 inches as it shifts
over the Upper Mississippi River Valley while the low weakens to
29.5 inches, still over Quebec. Meanwhile, a 29.7 inch Colorado Low
develops, which will move over Oklahoma at 29.8 inches on Saturday
while 30.4 inch high pressure spans the Great Lakes. The low ejects
into the southern Great Lakes Basin early Sunday morning at 29.9
inches, reaching the southern Ontario/Quebec border at 29.8 inches
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 on Tuesday by a low pressure of around
29.8 inches over northern Ontario and a 29.5 inch Nor`Easter off the
coast of the Chesapeake Bay.


LSZ162-280900-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
400 PM EST Thu Nov 27 2025 /300 PM CST Thu Nov 27 2025/

.LATE THIS AFTERNOON...Northwest winds 20 to 30 knots. Waves 3 to
6 feet occasionally to 8 feet.
.TONIGHT...Northwest winds 20 to 30 knots diminishing to 15 to
25 knots by midnight. Waves subsiding to 3 to 5 feet occasionally
to 7 feet.
.FRIDAY...Northwest winds 15 to 25 knots diminishing to 10 to
20 knots. Waves subsiding to calm to 2 feet.
.FRIDAY NIGHT...Northwest winds 5 to 15 knots veering north by
midnight. Waves calm to 2 feet.
.SATURDAY...North winds 5 to 15 knots veering northeast in the
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 1 to 3 feet.
.SUNDAY...Northwest winds 15 to 25 knots. Waves 1 to 3 feet.
.SUNDAY NIGHT...Northwest winds 10 to 20 knots backing west after
midnight. Waves subsiding to calm to 2 feet.
.MONDAY...Southwest winds 15 to 25 knots veering west. Waves
building to 1 to 3 feet.
.TUESDAY...Southwest winds 10 to 20 knots veering west. A chance
of snow showers. Waves 1 to 3 feet.

$$

LSZ263-280900-
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 Nov 27 2025

.LATE THIS AFTERNOON...North winds 20 to 30 knots. A slight
chance of snow showers. Waves 5 to 8 feet occasionally to
10 feet.
.TONIGHT...North winds 20 to 30 knots backing northwest late. A
slight chance of snow showers. Waves subsiding to 4 to 7 feet
occasionally to 9 feet.
.FRIDAY...Northwest winds 15 to 25 knots diminishing to 10 to
20 knots. A slight chance of snow showers in the morning. Waves
subsiding to 1 to 3 feet.
.FRIDAY NIGHT...Northwest winds 5 to 15 knots. Waves subsiding to
calm to 2 feet.
.SATURDAY...North winds 5 to 15 knots veering northeast in the
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 20 to 30 knots. A chance of snow
showers. Waves building to 3 to 6 feet occasionally to 8 feet.
.SUNDAY NIGHT...Northwest winds 15 to 25 knots becoming west
10 to 20 knots after midnight. A chance of snow showers. Waves
subsiding to 2 to 4 feet.
.MONDAY...West winds 20 to 30 knots backing southwest. Waves
building to 3 to 5 feet occasionally to 7 feet.
.TUESDAY...Southwest winds 15 to 25 knots veering west. A chance
of snow showers. Waves subsiding to 2 to 4 feet, then building to
3 to 5 feet occasionally to 7 feet.

$$

LSZ264-280900-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
400 PM EST Thu Nov 27 2025

...GALE WARNING IN EFFECT UNTIL 1 AM EST FRIDAY...

.LATE THIS AFTERNOON...North gales to 35 knots. A slight chance
of snow showers. Waves 9 to 12 feet occasionally to 15 feet
subsiding to 8 to 11 feet occasionally to 14 feet.
.TONIGHT...North gales to 35 knots diminishing to 20 to 30 knots
late. A slight chance of snow showers. Waves subsiding to 6 to
9 feet occasionally to 11 feet.
.FRIDAY...North winds 20 to 30 knots becoming northwest 15 to
25 knots. A slight chance of snow showers. Waves subsiding to
3 to 5 feet occasionally to 7 feet.
.FRIDAY NIGHT...Northwest winds 10 to 20 knots diminishing to
5 to 15 knots by midnight. Waves subsiding to calm to 2 feet.
.SATURDAY...Northwest winds 5 to 15 knots veering north in the
afternoon. A slight chance of snow showers in the afternoon.
Waves calm to 2 feet.
.SATURDAY NIGHT...North winds 5 to 15 knots increasing to 15 to
25 knots after midnight. A chance of snow showers. Waves building
to 2 to 4 feet.
.SUNDAY...North winds 20 to 30 knots backing northwest in the
afternoon. A chance of snow showers. Waves building to 4 to
7 feet occasionally to 9 feet.
.SUNDAY NIGHT...Northwest winds 20 to 30 knots diminishing to
15 to 25 knots after midnight. Waves subsiding to 3 to 6 feet
occasionally to 8 feet.
.MONDAY...West winds 15 to 25 knots increasing to 20 to 30 knots.
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 3 to 5 feet occasionally to 7 feet.

$$

LSZ265-280900-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
400 PM EST Thu Nov 27 2025

...GALE WARNING IN EFFECT UNTIL 1 AM EST FRIDAY...

.LATE THIS AFTERNOON...Northwest gales to 35 knots. A chance of
snow showers. Waves 9 to 12 feet occasionally to 15 feet.
.TONIGHT...Northwest gales to 35 knots. A chance of snow showers.
Waves subsiding to 7 to 10 feet occasionally to 13 feet.
.FRIDAY...Northwest winds 20 to 30 knots diminishing to 15 to
25 knots by mid afternoon. A chance of snow showers. 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 by midnight, then backing west late. A chance of
snow showers. Waves subsiding to calm to 2 feet.
.SATURDAY...West winds 10 to 20 knots becoming north 5 to
15 knots in the afternoon. A chance of snow showers. Waves calm
to 2 feet.
.SATURDAY NIGHT...Northeast winds 5 to 15 knots becoming north
15 to 25 knots after midnight. 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 likely. Waves building to
4 to 7 feet occasionally to 9 feet.
.SUNDAY NIGHT...Northwest winds 20 to 30 knots becoming west
15 to 25 knots after midnight. Snow showers likely. Waves
subsiding to 2 to 4 feet.
.MONDAY...West winds 15 to 25 knots backing southwest. A chance
of snow showers. Waves subsiding to 1 to 3 feet.
.TUESDAY...Southwest winds 15 to 25 knots veering west. A chance
of snow showers. Waves subsiding to calm to 2 feet, then building
to 1 to 3 feet.

$$

LSZ266-280900-
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 Nov 27 2025

...GALE WARNING IN EFFECT THROUGH FRIDAY MORNING...

.LATE THIS AFTERNOON...North gales to 45 knots. A chance of snow
showers. Waves 12 to 17 feet occasionally to 21 feet.
.TONIGHT...North gales to 40 knots backing northwest late. A
chance of snow showers. Waves subsiding to 10 to 14 feet
occasionally to 18 feet.
.FRIDAY...Northwest gales to 35 knots diminishing to 20 to
30 knots by mid afternoon. A chance of snow showers. Waves
subsiding to 6 to 9 feet occasionally to 11 feet.
.FRIDAY NIGHT...Northwest winds 15 to 25 knots diminishing to
10 to 20 knots by midnight. Snow showers in the evening. A chance
of snow showers after midnight. Waves subsiding to 2 to 4 feet.
.SATURDAY...Northwest winds 10 to 20 knots becoming north 5 to
15 knots in the afternoon. A chance of snow showers in the
morning, then snow showers in the afternoon. Waves subsiding to
calm to 2 feet.
.SATURDAY NIGHT...Northeast winds 5 to 15 knots becoming north
15 to 25 knots after midnight. 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 7 to
10 feet occasionally to 13 feet.
.SUNDAY NIGHT...Northwest gales to 35 knots diminishing to 15 to
25 knots after midnight. Snow showers. Waves subsiding to 5 to
8 feet occasionally to 10 feet.
.MONDAY...West winds 15 to 25 knots backing southwest. A chance
of snow showers. Waves 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 3 to 6 feet occasionally to 8 feet.

$$

LSZ267-280900-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
400 PM EST Thu Nov 27 2025

...GALE WARNING IN EFFECT THROUGH FRIDAY MORNING...

.LATE THIS AFTERNOON...North gales to 40 knots. Snow showers.
Waves 11 to 15 feet occasionally to 19 feet.
.TONIGHT...North gales to 40 knots. A chance of snow showers.
Waves subsiding to 9 to 12 feet occasionally to 15 feet.
.FRIDAY...North gales to 35 knots backing northwest by mid
afternoon. A chance of snow showers. Waves subsiding to 6 to
9 feet occasionally to 11 feet.
.FRIDAY NIGHT...Northwest winds 15 to 25 knots diminishing to
10 to 20 knots by midnight. Snow showers in the evening, then a
chance of snow showers after midnight. Waves subsiding to 2 to
4 feet.
.SATURDAY...West winds 10 to 20 knots backing southwest in the
afternoon. 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 6 to
9 feet occasionally to 11 feet.
.SUNDAY NIGHT...Northwest winds 20 to 30 knots diminishing to
15 to 25 knots after midnight. Snow showers. Waves building to
7 to 10 feet occasionally to 13 feet, then subsiding to 5 to
8 feet occasionally to 10 feet.
.MONDAY...West winds 15 to 25 knots backing southwest. 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 building to 3 to 6 feet occasionally to 8 feet.

$$

LSZ261-280300-
MAFOR 2722/
Superior West 14740 12730 11720 11710. Waves 4 to 7 feet
subsiding to 3 to 6 feet tonight. Waves 3 to 5 feet subsiding to
1 to 3 feet Friday.

Superior North Central...GALE WARNING IN EFFECT...13850 11750
12840 11740 11730. Waves 7 to 11 feet tonight. Waves 5 to 9 feet
subsiding to 3 to 6 feet Friday.

Superior South Central...GALE WARNING IN EFFECT...14750 14740. A
chance of snow showers. Waves 10 to 15 feet subsiding to 9 to 12
feet tonight. Waves 7 to 11 feet subsiding to 5 to 9 feet Friday.

Superior East...GALE WARNING IN EFFECT...11857 14850 12840 11740.
Waves 10 to 14 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

Graphical marine forecasts are available online at:
weather.gov/greatlakes