186
FZUS63 KMQT 160313 CCA
GLFLS

Open Lake Forecast for Lake Superior...CORRECTED
National Weather Service Marquette MI
1013 PM EST Sat Nov 15 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 29.1 inch low over the Eastern Great Lakes this evening continues
into New England by Sunday morning, eventually further deepening to
28.9 inches over the Canadian Maritimes Sunday night into Monday.
Troughing gradually weakens to 29.9 inches over Lake Superior
through Sunday night as this occurs. Meanwhile, 30.1 inch high
pressure extending from Saskatchewan to the Dakotas this weekend
builds to 30.3 inches as it shifts east to the Great Lakes by
Tuesday night. High pressure persists at around 30.2 inches over the
lake through late next week as the high shifts east to New England
by Wednesday night. A 29.7 inch low over the Southern Plains
Thursday lifts into the Great Lakes region at around 29.6 inches by
Friday.


LSZ162-160900-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
1013 PM EST Sat Nov 15 2025 /913 PM CST Sat Nov 15 2025/

.REST OF TONIGHT...Northwest winds to 30 knots with a few gale
force gusts to 35 knots possible diminishing to 20 to 30 knots by
midnight. Waves 4 to 7 feet occasionally to 9 feet subsiding to
3 to 6 feet occasionally to 8 feet.
.SUNDAY...Northwest winds 20 to 30 knots. Waves subsiding to 2 to
4 feet.
.SUNDAY NIGHT...Northwest winds 10 to 20 knots diminishing to
5 to 15 knots late. Waves subsiding to calm to 2 feet.
.MONDAY...Northwest winds 5 to 15 knots. Waves calm to 2 feet.
.MONDAY NIGHT...Northeast winds 5 to 15 knots. Waves calm to
2 feet.
.TUESDAY...East winds 5 to 15 knots. Waves calm to 2 feet.
.TUESDAY NIGHT...East winds 5 to 15 knots veering southeast after
midnight. Waves calm to 2 feet.
.WEDNESDAY...South winds 5 to 15 knots veering southwest. Waves
calm to 2 feet.
.THURSDAY...Southwest winds 5 to 15 knots becoming north 10 to
20 knots. A chance of rain showers. Waves calm to 2 feet.

$$

LSZ263-160900-
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-
1013 PM EST Sat Nov 15 2025

.REST OF TONIGHT...Northwest winds 20 to 30 knots. Waves 5 to
9 feet occasionally to 11 feet.
.SUNDAY...Northwest winds 15 to 25 knots. Waves subsiding to 3 to
6 feet occasionally to 8 feet.
.SUNDAY NIGHT...Northwest winds 15 to 25 knots diminishing to
10 to 20 knots by midnight. Waves subsiding to 2 to 4 feet.
.MONDAY...Northwest winds 10 to 20 knots diminishing to 5 to
15 knots in the afternoon. Waves subsiding to calm to 2 feet.
.MONDAY NIGHT...North winds 5 to 15 knots. Waves calm to 2 feet.
.TUESDAY...Northeast winds 5 to 15 knots. Waves calm to 2 feet.
.TUESDAY NIGHT...East winds less than 10 knots veering south
after midnight. Waves calm to 2 feet.
.WEDNESDAY...South winds 5 to 15 knots veering southwest. Waves
calm to 2 feet.
.THURSDAY...Southwest winds 5 to 15 knots veering north. A chance
of rain showers. Waves calm to 2 feet.

$$

LSZ264-160900-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
1013 PM EST Sat Nov 15 2025

.REST OF TONIGHT...Northwest winds to 30 knots with a few gale
force gusts to 35 knots possible diminishing to 20 to 30 knots by
midnight. Waves 7 to 11 feet occasionally to 13 feet, then
subsiding to 7 to 10 feet occasionally to 13 feet.
.SUNDAY...Northwest winds 20 to 30 knots. Waves subsiding to 5 to
8 feet occasionally to 10 feet.
.SUNDAY NIGHT...Northwest winds 20 to 30 knots diminishing to
15 to 25 knots by midnight. Waves subsiding to 3 to 6 feet
occasionally to 8 feet.
.MONDAY...Northwest winds 10 to 20 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 5 to 15 knots. Waves calm to 2 feet.
.TUESDAY NIGHT...North winds less than 10 knots backing west
after midnight. Waves calm to 2 feet.
.WEDNESDAY...Southwest winds 5 to 15 knots. Waves calm to 2 feet.
.THURSDAY...Southwest winds 5 to 15 knots veering north. A chance
of rain showers. Waves building to 1 to 3 feet.

$$

LSZ265-160900-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
1013 PM EST Sat Nov 15 2025

...GALE WARNING IN EFFECT UNTIL 10 AM EST SUNDAY...

.REST OF TONIGHT...Northwest gales to 40 knots. A slight chance
of snow showers after midnight. Waves 7 to 11 feet occasionally
to 13 feet, then subsiding to 7 to 10 feet occasionally to
13 feet.
.SUNDAY...Northwest gales to 35 knots diminishing to northwest winds
of 30 knots with a few gale force gusts up to 35 knots possible by
noon. A slight chance of snow showers in the morning. Waves
subsiding to 5 to 8 feet occasionally to 10 feet.
.SUNDAY NIGHT...Northwest winds to 30 knots with a few gale force
gusts up to 35 knots possible diminishing to 20 to 30 knots by
midnight. 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. Waves subsiding to 1 to
3 feet.
.MONDAY NIGHT...Northwest winds 5 to 15 knots veering north after
midnight. Waves subsiding to calm to 2 feet.
.TUESDAY...North winds 5 to 15 knots. Waves calm to 2 feet.
.TUESDAY NIGHT...North winds 5 to 15 knots backing west after
midnight. Waves calm to 2 feet.
.WEDNESDAY...Southwest winds 5 to 15 knots. Waves calm to 2 feet.
.THURSDAY...Southwest winds 5 to 15 knots becoming north 10 to
20 knots. A chance of rain showers. Waves calm to 2 feet.

$$

LSZ266-160900-
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-
1013 PM EST Sat Nov 15 2025

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

.REST OF TONIGHT...Northwest gales to 40 knots. A slight chance
of rain showers late in the evening. A chance of snow showers.
Waves 10 to 14 feet occasionally to 18 feet.
.SUNDAY...Northwest gales to 40 knots. A chance of snow showers.
Waves subsiding to 10 to 14 feet occasionally to 18 feet.
.SUNDAY NIGHT...Northwest winds to 30 knots with a few gale force
gusts up to 35 knots possible diminishing to 20 to 30 knots late. 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 in the afternoon. A slight chance of snow showers. Waves
subsiding to 3 to 5 feet occasionally to 7 feet.
.MONDAY NIGHT...Northwest winds 10 to 20 knots becoming north
5 to 15 knots after midnight. Waves subsiding to calm to 2 feet.
.TUESDAY...North winds 5 to 15 knots. Waves calm to 2 feet.
.TUESDAY NIGHT...North winds 5 to 15 knots backing northwest
after midnight. Waves calm to 2 feet.
.WEDNESDAY...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.

$$

LSZ267-160900-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
1013 PM EST Sat Nov 15 2025

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

.REST OF TONIGHT...Northwest gales to 40 knots. A chance of snow
showers late in the evening. A chance of rain showers. Snow
showers likely after midnight. Waves 10 to 14 feet occasionally
to 18 feet.
.SUNDAY...Northwest gales to 40 knots. Snow showers likely. Waves
subsiding to 10 to 14 feet occasionally to 18 feet.
.SUNDAY NIGHT...Northwest winds to 30 knots with a few gale force
gusts up to 35 knots possible becoming northwest 20 to 30 knots
late. 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 in the afternoon. A slight chance of snow showers. Waves
subsiding to 3 to 6 feet occasionally to 8 feet.
.MONDAY NIGHT...Northwest winds 15 to 25 knots diminishing to
10 to 20 knots after midnight. Waves subsiding to calm to 2 feet.
.TUESDAY...North winds 10 to 20 knots becoming northwest 5 to
15 knots in the afternoon. Waves calm to 2 feet.
.TUESDAY NIGHT...Northwest winds 5 to 15 knots increasing to
10 to 20 knots after midnight. Waves calm to 2 feet.
.WEDNESDAY...Southwest winds 10 to 20 knots backing south. Waves
calm to 2 feet.
.THURSDAY...South winds 10 to 20 knots veering southwest. A
chance of rain showers, then rain showers likely. Waves building
to 1 to 3 feet.

$$

LSZ261-160900-
MAFOR 1604/
Superior West 14740 14730. Waves 5 to 8 feet overnight. Waves 3
to 6 feet subsiding to 2 to 4 feet Sunday. Waves 2 to 4 feet
Sunday evening.

Superior North Central 11740 19750 15740 11740. Waves 7 to 10 feet
overnight. Waves 6 to 10 feet subsiding to 5 to 8 feet Sunday. Waves
5 to 7 feet Sunday evening.

Superior South Central...GALE WARNING IN EFFECT...15750 12740.
Waves 9 to 13 feet overnight. Waves 8 to 12 feet Sunday. Waves 7
to 10 feet Sunday evening.

Superior East...GALE WARNING IN EFFECT...11750 14757 12750 11740.
A chance of rain showers late this evening. Waves 10 to 14 feet.

$$

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