050
FZUS63 KMQT 162106 CCA
GLFLS

Open Lake Forecast for Lake Superior...CORRECTED
National Weather Service Marquette MI
406 PM EST Sun Nov 16 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 30.0 inch high over the Upper Mississippi River Valley builds to
30.1 inches by Monday morning. Then the high shifts east to the
Great Lakes Basin on Monday, rising to 30.2 inches Monday night. The
high remains relatively stationary on Tuesday while a 29.8 inch low
to the south fizzles out. The high rises to 30.3 inches on
Wednesday, moving east to New England for Wednesday night and
Thursday. Meanwhile, a 29.9 inch trough develops over the Plains
Wednesday night, deepening to at least 29.7 inches as it tracks east
over the Upper Great Lakes Thursday and Thursday night. A high
pressure of 30.1 inches looks to descend southeast from the Canadian
Prairie on Friday.


LSZ162-170900-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
406 PM EST Sun Nov 16 2025 /306 PM CST Sun Nov 16 2025/

.LATE THIS AFTERNOON...Northwest winds 15 to 25 knots. Waves 2 to
4 feet.
.TONIGHT...Northwest winds 15 to 25 knots diminishing to 5 to
15 knots. Waves subsiding to calm to 2 feet.
.MONDAY...Northwest winds 5 to 15 knots backing west by mid
afternoon. Waves calm to 2 feet.
.MONDAY NIGHT...North winds 5 to 15 knots veering northeast by
midnight. Waves calm to 2 feet.
.TUESDAY...East winds 5 to 15 knots. Waves calm to 2 feet.
.TUESDAY NIGHT...South winds 5 to 15 knots veering southwest
after midnight. Waves calm to 2 feet.
.WEDNESDAY...Southwest winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon. Waves calm to 2 feet.
.WEDNESDAY NIGHT...Southwest winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. Waves calm to 2 feet.
.THURSDAY...Southwest winds 5 to 15 knots becoming northwest
10 to 20 knots. A chance of rain showers. Waves calm to 2 feet.
.FRIDAY...North winds 10 to 20 knots. Waves calm to 2 feet.

$$

LSZ263-170900-
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-
406 PM EST Sun Nov 16 2025

.LATE THIS AFTERNOON...Northwest winds 15 to 25 knots. Waves 3 to
6 feet occasionally to 8 feet.
.TONIGHT...Northwest winds 15 to 25 knots diminishing to 10 to
20 knots late. Waves subsiding to 2 to 4 feet.
.MONDAY...Northwest winds 10 to 20 knots diminishing to 5 to
15 knots. Waves subsiding to calm to 2 feet.
.MONDAY NIGHT...North winds 5 to 15 knots veering northeast late.
Waves calm to 2 feet.
.TUESDAY...East winds 5 to 15 knots diminishing to less than
10 knots in the afternoon. Waves calm to 2 feet.
.TUESDAY NIGHT...South winds less than 10 knots becoming
southwest 5 to 15 knots after midnight. Waves calm to 2 feet.
.WEDNESDAY...Southwest winds 5 to 15 knots. Waves calm to 2 feet.
.WEDNESDAY NIGHT...Southwest winds 5 to 15 knots. Waves calm to
2 feet.
.THURSDAY...Southwest winds 5 to 15 knots becoming west 10 to
20 knots. A chance of rain showers. Waves building to 1 to
3 feet.
.FRIDAY...North winds 15 to 25 knots diminishing to 10 to
20 knots. Waves subsiding to calm to 2 feet.

$$

LSZ264-170900-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
406 PM EST Sun Nov 16 2025

.LATE THIS AFTERNOON...Northwest winds 20 to 30 knots. Waves 5 to
8 feet occasionally to 10 feet.
.TONIGHT...Northwest winds 20 to 30 knots veering north by
midnight, then becoming northwest 15 to 25 knots late. Waves
building to 6 to 9 feet occasionally to 11 feet, then subsiding
to 3 to 6 feet occasionally to 8 feet.
.MONDAY...Northwest winds 15 to 25 knots diminishing to 5 to
15 knots. Waves subsiding to 1 to 3 feet.
.MONDAY NIGHT...North winds 5 to 15 knots. Waves subsiding to
calm to 2 feet.
.TUESDAY...North winds less than 10 knots backing northwest in
the afternoon. Waves calm to 2 feet.
.TUESDAY NIGHT...Southwest winds less than 10 knots increasing to
5 to 15 knots after midnight. Waves calm to 2 feet.
.WEDNESDAY...Southwest winds 5 to 15 knots. Waves calm to 2 feet.
.WEDNESDAY NIGHT...Southwest winds 5 to 15 knots. Waves calm to
2 feet.
.THURSDAY...Southwest winds 5 to 15 knots becoming west 10 to
20 knots. A chance of rain showers. Waves building to 2 to
4 feet.
.FRIDAY...North winds 15 to 25 knots becoming northwest 10 to
20 knots. Waves building to 3 to 5 feet occasionally to 7 feet,
then subsiding to 1 to 3 feet.

$$

LSZ265-170900-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
406 PM EST Sun Nov 16 2025

.LATE THIS AFTERNOON...Northwest winds to 30 knots with a few
gale force gusts to 35 knots possible. Waves 6 to 9 feet
occasionally to 11 feet.
.TONIGHT...Northwest winds to 30 knots with a few gale force
gusts to 35 knots possible diminishing to 20 to 30 knots late.
Waves subsiding to 4 to 7 feet occasionally to 9 feet.
.MONDAY...Northwest winds 15 to 25 knots diminishing to 10 to
20 knots by mid afternoon. Waves subsiding to 1 to 3 feet.
.MONDAY NIGHT...Northwest winds 5 to 15 knots veering north by
midnight. Waves subsiding to calm to 2 feet.
.TUESDAY...North winds 5 to 15 knots. Waves calm to 2 feet.
.TUESDAY NIGHT...Southwest winds 5 to 15 knots. Waves calm to
2 feet.
.WEDNESDAY...Southwest winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon. Waves calm to 2 feet.
.WEDNESDAY NIGHT...Southwest winds 10 to 20 knots. Waves calm to
2 feet.
.THURSDAY...Southwest winds 10 to 20 knots becoming west 15 to
25 knots. Rain showers likely, then a chance of rain showers.
Waves calm to 2 feet.
.FRIDAY...Northwest winds 15 to 25 knots diminishing to 10 to
20 knots. Waves building to 2 to 4 feet, then subsiding to calm
to 2 feet.

$$

LSZ266-170900-
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-
406 PM EST Sun Nov 16 2025

...GALE WARNING IN EFFECT UNTIL 10 PM EST THIS EVENING...

.LATE THIS AFTERNOON...Northwest gales to 35 knots. A slight chance
of snow showers. Waves 10 to 14 feet occasionally to 18 feet.
.TONIGHT...Northwest gales to 35 knots becoming northwest winds to 30
knots with a few gale force gusts up to 35 knots possible by midnight.
A chance of snow showers. Waves subsiding to 6 to 9 feet
occasionally to 11 feet.
.MONDAY...Northwest winds 20 to 30 knots diminishing to 15 to
25 knots by mid afternoon. A slight chance of snow showers. Waves
subsiding to 3 to 6 feet occasionally to 8 feet.
.MONDAY NIGHT...Northwest winds 10 to 20 knots veering north by
midnight, then diminishing to 5 to 15 knots late. A slight chance
of snow showers. Waves subsiding to calm to 2 feet.
.TUESDAY...North winds 5 to 15 knots backing northwest in the
afternoon. Waves calm to 2 feet.
.TUESDAY NIGHT...West winds 5 to 15 knots backing southwest after
midnight. Waves calm to 2 feet.
.WEDNESDAY...Southwest winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon. Waves calm to 2 feet.
.WEDNESDAY NIGHT...Southwest winds 10 to 20 knots. Waves calm to
2 feet.
.THURSDAY...South winds 10 to 20 knots veering southwest. A
chance of rain showers. Waves building to 2 to 4 feet.
.FRIDAY...Northwest winds 15 to 25 knots veering north. A chance
of rain showers. Waves building to 3 to 6 feet occasionally to
8 feet, then subsiding to 2 to 4 feet.

$$

LSZ267-170900-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
406 PM EST Sun Nov 16 2025

...GALE WARNING IN EFFECT UNTIL 10 PM EST THIS EVENING...

.LATE THIS AFTERNOON...Northwest gales to 40 knots. Snow showers
likely. Waves 10 to 14 feet occasionally to 18 feet.
.TONIGHT...Northwest gales to 35 knots becoming north winds to 30
knots with a few gale force gusts up to 35 knots possible by
midnight, then backing northwest late. A chance of snow showers.
Waves subsiding to 6 to 9 feet occasionally to 11 feet.
.MONDAY...Northwest winds 20 to 30 knots. A chance of snow
showers. Waves subsiding to 3 to 6 feet occasionally to 8 feet.
.MONDAY NIGHT...Northwest winds 15 to 25 knots becoming north
10 to 20 knots by midnight. A slight chance of snow showers.
Waves subsiding to calm to 2 feet.
.TUESDAY...North winds 5 to 15 knots backing northwest in the
afternoon. Waves calm to 2 feet.
.TUESDAY NIGHT...Northwest winds 5 to 15 knots backing west after
midnight. Waves calm to 2 feet.
.WEDNESDAY...Southwest winds 10 to 20 knots. Waves calm to
2 feet.
.WEDNESDAY NIGHT...Southwest winds 10 to 20 knots. Waves calm to
2 feet.
.THURSDAY...South winds 10 to 20 knots veering southwest. Rain
showers. Waves building to 1 to 3 feet.
.FRIDAY...Northwest winds 15 to 25 knots veering north. A chance
of rain showers. Waves building to 3 to 6 feet occasionally to
8 feet, then subsiding to 2 to 4 feet.

$$

LSZ261-170300-
MAFOR 1622/
Superior West 12730 13720 12710 11600. Waves 2 to 4 feet building
to 3 to 5 feet, then subsiding to 1 to 3 feet tonight. Waves 1 to
3 feet subsiding to 1 foot or less Monday.

Superior North Central 12740 11840 13730 12720. Waves 5 to 8 feet
tonight. Waves 3 to 6 feet subsiding to 2 to 4 feet Monday.

Superior South Central...GALE WARNING IN EFFECT...12750 12740
13730 11720. Waves 7 to 11 feet subsiding to 6 to 9 feet tonight.
Waves 5 to 8 feet subsiding to 3 to 6 feet Monday.

Superior East...GALE WARNING IN EFFECT...12750 11740 11840 11740
13730. A chance of snow showers tonight. Waves 9 to 13 feet
subsiding to 7 to 11 feet tonight. Waves 5 to 9 feet subsiding to
4 to 6 feet Monday.

$$

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