980
FZUS63 KMQT 141501
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
1001 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 eastern Lake Superior this morning continues
east into Ontario as a 29.2 inch low lifts out of the Canadian
Prairies towards Hudson Bay today. This low extends 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
Sunday night into Monday. 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. The
high then lifts into New England late Wednesday.


LSZ162-142100-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
1001 AM EST Fri Nov 14 2025 /901 AM CST Fri Nov 14 2025/

.REST OF TODAY...Southeast winds 5 to 15 knots backing east by
mid afternoon. Waves calm to 2 feet 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 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-
1001 AM EST Fri Nov 14 2025

.REST OF TODAY...Southeast winds 10 to 20 knots. Waves 1 to
3 feet 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-
1001 AM EST Fri Nov 14 2025

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

.REST OF TODAY...Southeast winds 10 to 20 knots increasing to
20 to 30 knots by mid afternoon. Waves 1 to 3 feet 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. A slight chance of snow
showers. 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-
1001 AM EST Fri Nov 14 2025

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

.REST OF TODAY...Southeast winds 10 to 20 knots increasing to
15 to 25 knots by mid afternoon. Waves calm to 2 feet 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 6 to 9 feet occasionally to 11 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 6 feet occasionally to 8 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-
1001 AM EST Fri Nov 14 2025

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

.REST OF TODAY...Southeast winds 10 to 20 knots increasing to
20 to 30 knots by mid afternoon. Waves 1 to 3 feet 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 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 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-
1001 AM EST Fri Nov 14 2025

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

.REST OF TODAY...Southeast winds 10 to 20 knots increasing to
15 to 25 knots by mid afternoon. Waves calm to 2 feet 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.

$$

LSZ261-142100-
MAFOR 1416/
Superior West 12300 11310 11410 12510 11620 11630. A chance of
showers Saturday morning. Waves 2 feet or less this afternoon and
tonight. Waves 1 to 2 feet building to 2 to 4 feet Saturday
morning.

Superior North Central 12330 11340 11440 12430 11620 11740. A
chance of showers Saturday morning. Waves 2 to 4 feet building to
4 to 7 feet this afternoon. Waves 5 to 8 feet subsiding to 3 to 6
feet tonight. Waves 3 to 5 feet Saturday morning.

Superior South Central 11320 11330 11340 12440 11430 11520 11640.
A chance of showers Saturday morning. Waves 2 to 4 feet this
afternoon. Waves 3 to 5 feet subsiding to 2 to 4 feet tonight.
Waves 1 to 3 feet Saturday morning.

Superior East 12320 11330 11340 12440 11430 11536. Waves 2 to 4
feet this afternoon. Waves 3 to 5 feet building to 4 to 7 feet
tonight. Waves 3 to 6 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