471
FZUS63 KMQT 150301
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
1001 PM 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...

29.2 inch low pressure moving towards Hudson Bay extends a 29.4 inch
trough across Lake Superior late tonight into Saturday morning,
gradually weakening to 29.8 inches Saturday evening through Saturday
night. Low pressure develops over New England Saturday night, then
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.


LSZ162-150900-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
1001 PM EST Fri Nov 14 2025 /901 PM CST Fri Nov 14 2025/

.REST OF TONIGHT...South winds 5 to 15 knots veering west late. A
slight chance of showers after midnight. Waves 1 to 3 feet
subsiding to calm to 2 feet.
.SATURDAY...West winds 15 to 25 knots increasing to 20 to
30 knots by late morning, then veering northwest by mid
afternoon. A slight chance of rain showers in the morning. Waves
building to 3 to 5 feet occasionally to 7 feet.
.SATURDAY NIGHT...Northwest winds to 30 knots with a few gale
force gusts to 35 knots possible diminishing to 20 to 30 knots by
midnight. Waves building to 4 to 7 feet occasionally to 9 feet,
then subsiding to 3 to 6 feet occasionally to 8 feet.
.SUNDAY...Northwest winds 15 to 25 knots. Waves subsiding to 2 to
4 feet.
.SUNDAY NIGHT...Northwest winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. Waves subsiding to calm to 2 feet.
.MONDAY...Northwest winds 5 to 15 knots. Waves calm to 2 feet.
.MONDAY NIGHT...North winds 5 to 15 knots veering northeast after
midnight. Waves calm to 2 feet.
.TUESDAY...Northeast winds 5 to 15 knots veering southwest. Waves
calm to 2 feet.
.WEDNESDAY...Southwest winds 5 to 15 knots. Waves calm to 2 feet.

$$

LSZ263-150900-
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 PM EST Fri Nov 14 2025

.REST OF TONIGHT...South winds 10 to 20 knots becoming west 5 to
15 knots late. A chance of showers after midnight. Waves 3 to
5 feet occasionally to 7 feet subsiding to 1 to 3 feet.
.SATURDAY...Northwest winds 15 to 25 knots increasing to 20 to
30 knots by mid afternoon. A slight chance of rain showers in the
morning. Waves building to 4 to 7 feet occasionally to 9 feet.
.SATURDAY NIGHT...Northwest winds 20 to 30 knots diminishing to
15 to 25 knots by midnight. Waves building to 4 to 8 feet
occasionally to 10 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 after 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...North winds 5 to 15 knots backing southwest. Waves
calm to 2 feet.
.WEDNESDAY...Southwest winds 5 to 15 knots. Waves calm to 2 feet.

$$

LSZ264-150900-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
1001 PM EST Fri Nov 14 2025

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

.REST OF TONIGHT...South winds 20 to 30 knots diminishing to
10 to 20 knots. A slight chance of showers after midnight. Waves
5 to 8 feet occasionally to 10 feet subsiding to 3 to 5 feet
occasionally to 7 feet.
.SATURDAY...Northwest winds 15 to 25 knots increasing to 20 to
30 knots. A chance of rain showers in the morning. Waves building
to 4 to 7 feet occasionally to 9 feet, then subsiding to 3 to
6 feet occasionally to 8 feet.
.SATURDAY NIGHT...Northwest winds 20 to 30 knots. Waves building
to 6 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 15 to 25 knots. 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...Northwest winds 5 to 15 knots backing west. Waves calm
to 2 feet.
.WEDNESDAY...Southwest winds 5 to 15 knots. Waves calm to 2 feet.

$$

LSZ265-150900-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
1001 PM EST Fri Nov 14 2025

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

.REST OF TONIGHT...South winds 15 to 25 knots diminishing to
10 to 20 knots late. A slight chance of showers after midnight.
Waves 3 to 6 feet occasionally to 8 feet subsiding to 1 to
3 feet.
.SATURDAY...West winds 20 to 30 knots becoming northwest gales to
35 knots. A chance of showers in the morning. Waves building to
5 to 8 feet occasionally to 10 feet.
.SATURDAY NIGHT...Northwest gales to 40 knots. A slight chance of
snow showers after midnight. Waves building to 6 to 10 feet
occasionally to 13 feet.
.SUNDAY...Northwest gales to 35 knots. A slight chance of snow
showers. Waves subsiding to 5 to 8 feet occasionally to 10 feet.
.SUNDAY NIGHT...Northwest winds 20 to 30 knots. A slight chance
of snow showers. Waves 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 10 to 20 knots. Waves subsiding
to calm to 2 feet.
.TUESDAY...Northwest winds 10 to 20 knots becoming southwest 5 to
15 knots. Waves calm to 2 feet.
.WEDNESDAY...Southwest winds 10 to 20 knots. Waves calm to
2 feet.

$$

LSZ266-150900-
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 PM EST Fri Nov 14 2025

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

.REST OF TONIGHT...South gales to 35 knots diminishing to 15 to
25 knots. A slight chance of showers after midnight. Waves 5 to
8 feet occasionally to 10 feet 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 8 to 11 feet
occasionally to 14 feet.
.SATURDAY NIGHT...Northwest gales to 40 knots. A chance of rain
showers in the evening. A chance of snow showers. Waves building
to 10 to 14 feet occasionally to 18 feet.
.SUNDAY...Northwest gales to 40 knots. A chance of 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. A chance of snow showers. Waves
subsiding to 5 to 8 feet occasionally to 10 feet.
.MONDAY...Northwest winds 20 to 30 knots diminishing to 15 to
25 knots in the afternoon. A chance of snow showers. Waves
subsiding to 3 to 5 feet occasionally to 7 feet.
.MONDAY NIGHT...Northwest winds 10 to 20 knots veering north
after midnight. Waves subsiding to calm to 2 feet.
.TUESDAY...Northwest winds 10 to 20 knots becoming west 5 to
15 knots. Waves calm to 2 feet.
.WEDNESDAY...Southwest winds 10 to 20 knots. Waves calm to
2 feet.

$$

LSZ267-150900-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
1001 PM EST Fri Nov 14 2025

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

.REST OF TONIGHT...Southeast gales to 35 knots becoming south
20 to 30 knots late. A slight chance of showers after midnight.
Waves 4 to 8 feet occasionally to 10 feet, then subsiding to 4 to
7 feet occasionally to 9 feet.
.SATURDAY...South winds 15 to 25 knots becoming northwest 20 to
30 knots by late morning, then increasing to gales to 40 knots by
mid afternoon. A chance of rain showers. Waves subsiding to 2 to
4 feet, then building to 8 to 11 feet occasionally to 14 feet.
.SATURDAY NIGHT...Northwest gales to 40 knots. Rain showers
likely, possibly mixed with snow showers in the evening, then
snow showers likely, possibly mixed with rain showers after
midnight. Waves building to 10 to 14 feet occasionally to
18 feet.
.SUNDAY...Northwest gales to 40 knots. Snow showers likely. Waves
10 to 14 feet occasionally to 18 feet.
.SUNDAY NIGHT...Northwest gales to 35 knots diminishing to 20 to
30 knots after midnight. A chance of snow showers. Waves
subsiding to 5 to 8 feet occasionally to 10 feet.
.MONDAY...Northwest winds 15 to 25 knots. A chance of snow
showers. Waves subsiding to 3 to 5 feet occasionally to 7 feet.
.MONDAY NIGHT...Northwest winds 10 to 20 knots veering north
after midnight. Waves subsiding to calm to 2 feet.
.TUESDAY...Northwest winds 10 to 20 knots backing west. Waves
calm to 2 feet.
.WEDNESDAY...Southwest winds 10 to 20 knots. Waves calm to
2 feet.

$$

LSZ261-150900-
MAFOR 1504/
Superior West 11510 11610 11620 11720 11730 13740. A chance of
showers Saturday morning. Waves 2 feet or less overnight. Waves 1
to 3 feet building to 3 to 5 feet Saturday. Waves 4 to 7 feet
Saturday evening.

Superior North Central 11440 11430 11620 14740 11740. A chance of
showers Saturday morning. Waves 5 to 9 feet subsiding to 4 to 7
feet overnight. Waves 3 to 6 feet Saturday. Waves 6 to 10 feet
Saturday evening.

Superior South Central...GALE WARNING IN EFFECT...12430 11520
13740 12750. A chance of showers Saturday morning. Waves 3 to 6
feet overnight. Waves 1 to 3 feet building to 5 to 8 feet
Saturday. Waves 6 to 9 feet building to 8 to 11 feet Saturday
evening.

Superior East...GALE WARNING IN EFFECT...11340 11440 11430 11530
11740 13750. A chance of showers Saturday. A chance of rain and
snow showers Saturday evening. Waves 5 to 8 feet overnight. Waves
4 to 7 feet building to 8 to 11 feet Saturday. Waves 8 to 12 feet
Saturday evening.

$$

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