785
FZUS63 KMQT 140901
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
401 AM EST Fri Nov 14 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 ridge over Lake Superior shifts east into Ontario this
morning as a 29.2 inch low lifts out of the Canadian Prairie towards
Hudson Bay today. This low will extend a 29.4 inch trough across
Lake Superior tonight into Saturday morning, gradually weakening to
29.8 inches as developing low pressure over New England this weekend
deepens to 28.8 inches over the Canadian Maritimes by Monday night.
Meanwhile, 30.1 inch high pressure extending from Saskatchewan to
the Dakotas this weekend will build to 30.3 inches as it shifts east
to the Great Lakes by Tuesday.


LSZ162-142100-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
401 AM EST Fri Nov 14 2025 /301 AM CST Fri Nov 14 2025/

.EARLY THIS MORNING...East winds 5 to 15 knots. Waves calm to
2 feet.
.TODAY...Southeast winds 5 to 15 knots backing east by mid
afternoon. Waves building to 1 to 3 feet, then subsiding to calm
to 2 feet.
.TONIGHT...South winds 5 to 15 knots veering southwest by
midnight, then becoming west 10 to 20 knots late. A slight chance
of showers after midnight. Waves calm to 2 feet.
.SATURDAY...West winds 15 to 25 knots increasing to 30 knots with
a few gale force gusts to 35 knots possible. A chance of rain
showers in the morning. Waves building to 3 to 5 feet
occasionally to 7 feet.
.SATURDAY NIGHT...Northwest winds 20 to 30 knots. Waves subsiding
to 2 to 4 feet, then building to 3 to 5 feet occasionally to
7 feet.
.SUNDAY...Northwest winds 20 to 30 knots. Waves subsiding to 2 to
4 feet.
.SUNDAY NIGHT...Northwest winds 15 to 25 knots diminishing to
10 to 20 knots after midnight. Waves subsiding to calm to 2 feet.
.MONDAY...Northwest winds 5 to 15 knots veering north. Waves calm
to 2 feet.
.TUESDAY...North winds 5 to 15 knots backing northwest. Waves
calm to 2 feet.

$$

LSZ263-142100-
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-
401 AM EST Fri Nov 14 2025

.EARLY THIS MORNING...Southeast winds 5 to 15 knots. Waves calm
to 2 feet.
.TODAY...Southeast winds 10 to 20 knots. Waves building to 2 to
4 feet.
.TONIGHT...South winds 10 to 20 knots veering southwest late. A
slight chance of showers after midnight. Waves subsiding to 1 to
3 feet.
.SATURDAY...West winds 15 to 25 knots increasing to 30 knots with
a few gale force gusts to 35 knots possible by late morning, then
veering northwest by mid afternoon. A chance of rain showers in
the morning. Waves building to 5 to 8 feet occasionally to
10 feet.
.SATURDAY NIGHT...Northwest gales to 35 knots diminishing to
20 to 30 knots after midnight. Waves 5 to 8 feet occasionally to
10 feet.
.SUNDAY...Northwest gales to 35 knots. Waves subsiding 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 2 to 4 feet.
.MONDAY...Northwest winds 10 to 20 knots becoming north 5 to
15 knots. Waves subsiding to calm to 2 feet.
.TUESDAY...Northwest winds 5 to 15 knots. Waves calm to 2 feet.

$$

LSZ264-142100-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
401 AM EST Fri Nov 14 2025

...GALE WATCH IN EFFECT FROM SATURDAY AFTERNOON THROUGH SUNDAY
EVENING...

.EARLY THIS MORNING...Southeast winds 5 to 15 knots. Waves calm
to 2 feet.
.TODAY...Southeast winds 10 to 20 knots increasing to 15 to
25 knots. Waves building to 4 to 7 feet occasionally to 9 feet.
.TONIGHT...South winds 15 to 25 knots becoming southwest 10 to
20 knots late. A slight chance of showers after midnight. Waves
building to 5 to 8 feet occasionally to 10 feet, then subsiding
to 3 to 5 feet occasionally to 7 feet.
.SATURDAY...Northwest winds 20 to 30 knots increasing to gales to
35 knots. A chance of rain showers. Waves building to 6 to 9 feet
occasionally to 11 feet.
.SATURDAY NIGHT...Northwest gales to 35 knots. A slight chance of
snow showers in the evening. Waves building to 6 to 10 feet
occasionally to 13 feet.
.SUNDAY...Northwest gales to 35 knots. Waves building to 8 to
11 feet occasionally to 14 feet, then subsiding to 6 to 9 feet
occasionally to 11 feet.
.SUNDAY NIGHT...Northwest gales to 35 knots diminishing to 15 to
25 knots after midnight. Waves subsiding to 3 to 6 feet
occasionally to 8 feet.
.MONDAY...Northwest winds 15 to 25 knots becoming north 5 to
15 knots. Waves subsiding to calm to 2 feet.
.TUESDAY...Northwest winds 5 to 15 knots. Waves calm to 2 feet.

$$

LSZ265-142100-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
401 AM EST Fri Nov 14 2025

...GALE WATCH IN EFFECT FROM SATURDAY AFTERNOON THROUGH SUNDAY
EVENING...

.EARLY THIS MORNING...Southeast winds 5 to 15 knots. Waves calm
to 2 feet.
.TODAY...Southeast winds 10 to 20 knots increasing to 15 to
25 knots. Waves building to 3 to 5 feet occasionally to 7 feet.
.TONIGHT...South winds 15 to 25 knots. Waves building to 3 to
6 feet occasionally to 8 feet, then subsiding to 1 to 3 feet.
.SATURDAY...West winds 20 to 30 knots becoming northwest gales to
40 knots. A chance of showers. Waves subsiding to calm to 2 feet,
then building to 6 to 9 feet occasionally to 11 feet.
.SATURDAY NIGHT...Northwest gales to 45 knots. A chance of rain
showers in the evening. A chance of snow showers. Waves building
to 6 to 10 feet occasionally to 13 feet.
.SUNDAY...Northwest gales to 40 knots. A chance of snow showers.
Waves subsiding to 5 to 8 feet occasionally to 10 feet.
.SUNDAY NIGHT...Northwest gales to 35 knots diminishing to 20 to
30 knots after midnight. A chance of snow showers. Waves
subsiding to 3 to 5 feet occasionally to 7 feet.
.MONDAY...Northwest winds 15 to 25 knots diminishing to 10 to
20 knots. Waves subsiding to calm to 2 feet.
.TUESDAY...Northwest winds 10 to 20 knots becoming west 5 to
15 knots. A chance of snow showers. Waves calm to 2 feet.

$$

LSZ266-142100-
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-
401 AM EST Fri Nov 14 2025

...GALE WATCH IN EFFECT FROM SATURDAY AFTERNOON THROUGH SUNDAY
EVENING...

.EARLY THIS MORNING...East winds 5 to 15 knots. Waves 1 to
3 feet.
.TODAY...Southeast winds 10 to 20 knots increasing to 15 to
25 knots. Waves subsiding to calm to 2 feet, then building to
3 to 6 feet occasionally to 8 feet.
.TONIGHT...South winds 20 to 30 knots diminishing to 15 to
25 knots late. A slight chance of showers after midnight. Waves
building to 5 to 8 feet occasionally to 10 feet, then subsiding
to 3 to 6 feet occasionally to 8 feet.
.SATURDAY...West winds 15 to 25 knots becoming northwest gales to
40 knots. A chance of rain showers. Waves subsiding to 3 to
5 feet occasionally to 7 feet, then building to 10 to 14 feet
occasionally to 18 feet.
.SATURDAY NIGHT...Northwest gales to 40 knots. A chance of rain
and snow showers in the evening, then snow showers likely after
midnight. Waves 10 to 14 feet occasionally to 18 feet.
.SUNDAY...Northwest gales to 40 knots. Snow showers in the
morning, then a chance of snow showers in the afternoon. Waves
subsiding to 10 to 14 feet occasionally to 18 feet.
.SUNDAY NIGHT...Northwest gales to 40 knots diminishing to 20 to
30 knots after midnight. Snow showers likely in the evening, then
a chance of snow showers after midnight. Waves subsiding to 5 to
8 feet occasionally to 10 feet.
.MONDAY...Northwest winds 15 to 25 knots diminishing to 10 to
20 knots. A chance of snow showers. A chance of rain showers.
Waves subsiding to 1 to 3 feet.
.TUESDAY...Northwest winds 10 to 20 knots diminishing to 5 to
15 knots. A chance of rain and snow showers. Waves subsiding to
calm to 2 feet.

$$

LSZ267-142100-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
401 AM EST Fri Nov 14 2025

...GALE WATCH IN EFFECT FROM SATURDAY AFTERNOON THROUGH SUNDAY
EVENING...

.EARLY THIS MORNING...Northeast winds 5 to 15 knots. Waves 1 to
3 feet.
.TODAY...Southeast winds 10 to 20 knots increasing to 15 to
25 knots by mid afternoon. Waves subsiding to calm to 2 feet,
then building to 2 to 4 feet.
.TONIGHT...Southeast winds 20 to 30 knots veering south late. A
slight chance of showers after midnight. Waves building to 4 to
7 feet occasionally to 9 feet, then subsiding to 3 to 5 feet
occasionally to 7 feet.
.SATURDAY...South winds 15 to 25 knots becoming west 20 to
30 knots by late morning, then becoming northwest gales to
40 knots by mid afternoon. Rain showers likely. Waves subsiding
to 2 to 4 feet, then building to 10 to 14 feet occasionally to
18 feet.
.SATURDAY NIGHT...Northwest gales to 40 knots. Rain showers
likely in the evening. Snow showers. Waves building to 11 to
15 feet occasionally to 19 feet, then subsiding to 10 to 14 feet
occasionally to 18 feet.
.SUNDAY...Northwest gales to 40 knots. Snow showers. Waves 10 to
14 feet occasionally to 18 feet.
.SUNDAY NIGHT...Northwest gales to 35 knots diminishing to 20 to
30 knots after midnight. Snow showers in the evening, then a
chance of snow showers after midnight. Waves subsiding to 5 to
8 feet occasionally to 10 feet.
.MONDAY...Northwest winds 15 to 25 knots diminishing to 10 to
20 knots. A chance of rain and snow showers. Waves subsiding to
1 to 3 feet.
.TUESDAY...Northwest winds 10 to 20 knots. A chance of rain and
snow showers. Waves subsiding to calm to 2 feet.

$$

LSZ261-141500-
MAFOR 1410/
Superior West 13310 11300 11310 11410 12510. Waves 2 feet or
less.

Superior North Central 11310 11320 12330 11340 11440 12430. Waves
1 to 2 feet building to 4 to 7 feet today. Waves 5 to 8 feet
subsiding to 3 to 6 feet tonight.

Superior South Central 11310 11320 12330 11340 12440 11430. Waves
2 feet or less building to 2 to 4 feet today. Waves 3 to 5 feet
subsiding to 2 to 4 feet tonight.

Superior East 11200 11310 12320 11330 11340 12440. Waves 2 to 4
feet today. Waves 3 to 5 feet building to 4 to 7 feet tonight.

$$

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