628
FZUS63 KMQT 021501
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
1001 AM EST Sun Nov 2 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 29.2 inch low moving across the Canadian Prairies today reaches
Hudson Bay at 29.0 inches tonight, pulling a 29.6 inch trough across
Lake Superior this evening into Monday. A 30.0 inch ridge then
rebuilds over the lake on Tuesday associated with a 30.4 inch high
pressure over the Southeastern U.S. A 29.8 inch low then moves over
Lake Michigan Tuesday night, followed by a 30.2 inch high pressure
moving from the Northern Plains to the the Great Lakes Wednesday
night into Thursday. Afterwards, a 29.6 inch low then moves through
the Great Lakes region Thursday night and Friday.


LSZ162-022100-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
1001 AM EST Sun Nov 2 2025 /901 AM CST Sun Nov 2 2025/

...GALE WARNING IN EFFECT THROUGH MONDAY AFTERNOON...

.REST OF TODAY...Southwest gales to 45 knots. A slight chance of
showers. Waves 6 to 9 feet occasionally to 11 feet building to
10 to 14 feet occasionally to 18 feet.
.TONIGHT...Southwest gales to 40 knots becoming west gales to
35 knots by midnight. Waves subsiding to 5 to 8 feet occasionally
to 10 feet.
.MONDAY...West gales to 35 knots diminishing to 20 to 30 knots by
mid afternoon. Waves subsiding to 4 to 7 feet occasionally to
9 feet.
.MONDAY NIGHT...West winds 15 to 25 knots. Waves subsiding to
2 to 4 feet.
.TUESDAY...West winds 10 to 20 knots backing southwest in the
afternoon. Waves subsiding to calm to 2 feet.
.TUESDAY NIGHT...West winds 5 to 15 knots becoming northwest
10 to 20 knots after midnight. Waves calm to 2 feet.
.WEDNESDAY...Northwest winds 10 to 20 knots diminishing to 5 to
15 knots. Waves calm to 2 feet.
.THURSDAY...South winds 10 to 20 knots becoming southwest 15 to
25 knots. A chance of rain showers. Waves building to 2 to
4 feet.

$$

LSZ263-022100-
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 Sun Nov 2 2025

...GALE WARNING IN EFFECT THROUGH LATE MONDAY NIGHT...

.REST OF TODAY...Southwest gales to 45 knots. A slight chance of
showers. Waves 7 to 10 feet occasionally to 13 feet building to
11 to 15 feet occasionally to 19 feet.
.TONIGHT...Southwest gales to 45 knots becoming west gales to
40 knots by midnight. Waves building to 12 to 17 feet
occasionally to 21 feet, then subsiding to 8 to 11 feet
occasionally to 14 feet.
.MONDAY...West gales to 40 knots. Waves subsiding to 8 to 11 feet
occasionally to 14 feet.
.MONDAY NIGHT...West gales to 35 knots diminishing to 20 to
30 knots after midnight. Waves subsiding to 4 to 7 feet
occasionally to 9 feet.
.TUESDAY...West winds 15 to 25 knots. Waves subsiding to 2 to
4 feet.
.TUESDAY NIGHT...West winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. Waves subsiding to calm to 2 feet.
.WEDNESDAY...Northwest winds 15 to 25 knots. Waves building to
2 to 4 feet, then subsiding to calm to 2 feet.
.THURSDAY...South winds 15 to 25 knots increasing to 20 to
30 knots. A chance of rain showers. Waves building to 3 to 5 feet
occasionally to 7 feet.

$$

LSZ264-022100-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
1001 AM EST Sun Nov 2 2025

...GALE WARNING IN EFFECT THROUGH LATE MONDAY NIGHT...

.REST OF TODAY...Southwest gales to 45 knots. A slight chance of
showers. Waves 6 to 9 feet occasionally to 11 feet building to
11 to 15 feet occasionally to 19 feet.
.TONIGHT...Southwest gales to 45 knots becoming west gales to
40 knots by midnight. Waves building to 12 to 17 feet
occasionally to 21 feet, then subsiding to 10 to 14 feet
occasionally to 18 feet.
.MONDAY...West gales to 40 knots. Waves subsiding to 8 to 11 feet
occasionally to 14 feet.
.MONDAY NIGHT...West gales to 35 knots diminishing to 20 to
30 knots after midnight. Waves subsiding to 5 to 8 feet
occasionally to 10 feet.
.TUESDAY...West winds 20 to 30 knots diminishing to 15 to
25 knots in the afternoon. Waves subsiding to 3 to 6 feet
occasionally to 8 feet.
.TUESDAY NIGHT...West winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. Waves subsiding to 1 to 3 feet.
.WEDNESDAY...Northwest winds 20 to 30 knots diminishing to 15 to
25 knots. Waves building to 3 to 6 feet occasionally to 8 feet,
then subsiding to calm to 2 feet.
.THURSDAY...South winds 15 to 25 knots increasing to 20 to
30 knots. A chance of rain showers. Waves building to 3 to 6 feet
occasionally to 8 feet.

$$

LSZ265-022100-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
1001 AM EST Sun Nov 2 2025

...GALE WARNING IN EFFECT FROM 3 PM EST THIS AFTERNOON THROUGH
LATE MONDAY NIGHT...

.REST OF TODAY...Southwest gales to 40 knots. A slight chance of
rain showers in the afternoon. Waves 3 to 5 feet occasionally to
7 feet building to 5 to 8 feet occasionally to 10 feet.
.TONIGHT...Southwest gales to 45 knots becoming west gales to
40 knots by midnight. A slight chance of showers. Waves building
to 7 to 10 feet occasionally to 13 feet, then subsiding to 5 to
8 feet occasionally to 10 feet.
.MONDAY...West gales to 45 knots. Waves building to 6 to 10 feet
occasionally to 13 feet.
.MONDAY NIGHT...West gales to 35 knots diminishing to 20 to
30 knots after midnight. Waves subsiding to 3 to 5 feet
occasionally to 7 feet.
.TUESDAY...West winds 20 to 30 knots diminishing to 15 to
25 knots in the afternoon. Waves subsiding to calm to 2 feet.
.TUESDAY NIGHT...West winds 10 to 20 knots. A chance of showers.
Waves calm to 2 feet.
.WEDNESDAY...Northwest winds 20 to 30 knots. A chance of rain
showers. Waves building to 2 to 4 feet, then subsiding to calm to
2 feet.
.THURSDAY...South winds 15 to 25 knots becoming southwest 20 to
30 knots. Rain showers likely. Waves building to 1 to 3 feet.

$$

LSZ266-022100-
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 Sun Nov 2 2025

...GALE WARNING IN EFFECT FROM 3 PM EST THIS AFTERNOON THROUGH
LATE MONDAY NIGHT...

.REST OF TODAY...Southwest gales to 45 knots. A slight chance of
rain showers in the afternoon. Waves 4 to 7 feet occasionally to
9 feet building to 9 to 12 feet occasionally to 15 feet.
.TONIGHT...Southwest gales to 45 knots becoming west gales to
40 knots by midnight. A chance of showers. Waves building to
12 to 17 feet occasionally to 21 feet, then subsiding to 10 to
14 feet occasionally to 18 feet.
.MONDAY...West gales to 40 knots. A chance of showers. Waves
building to 11 to 15 feet occasionally to 19 feet, then subsiding
to 10 to 14 feet occasionally to 18 feet.
.MONDAY NIGHT...West gales to 40 knots diminishing to 20 to
30 knots after midnight. Waves subsiding to 7 to 10 feet
occasionally to 13 feet.
.TUESDAY...West winds 15 to 25 knots. Waves subsiding to 3 to
6 feet occasionally to 8 feet.
.TUESDAY NIGHT...West winds 10 to 20 knots. A chance of showers.
Waves subsiding to 2 to 4 feet.
.WEDNESDAY...Northwest winds 20 to 30 knots. A chance of rain
showers. Waves building to 5 to 8 feet occasionally to 10 feet,
then subsiding to 2 to 4 feet.
.THURSDAY...South winds 20 to 30 knots. A chance of rain showers.
Waves subsiding to 1 to 3 feet, then building to 4 to 7 feet
occasionally to 9 feet.

$$

LSZ267-022100-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
1001 AM EST Sun Nov 2 2025

...GALE WARNING IN EFFECT FROM 3 PM EST THIS AFTERNOON THROUGH
LATE MONDAY NIGHT...

.REST OF TODAY...Southwest winds 20 to 30 knots increasing to
gales to 40 knots. A chance of showers in the afternoon. Waves
3 to 6 feet occasionally to 8 feet building to 8 to 11 feet
occasionally to 14 feet.
.TONIGHT...Southwest gales to 45 knots becoming west gales to
40 knots late. A chance of showers. Waves building to 10 to
14 feet occasionally to 18 feet, then subsiding to 9 to 12 feet
occasionally to 15 feet.
.MONDAY...West gales to 45 knots. A chance of showers. Waves
building to 12 to 17 feet occasionally to 21 feet.
.MONDAY NIGHT...West gales to 40 knots. A slight chance of
showers in the evening. Waves subsiding to 8 to 11 feet
occasionally to 14 feet.
.TUESDAY...West winds 20 to 30 knots diminishing to 15 to
25 knots in the afternoon. Waves subsiding to 3 to 6 feet
occasionally to 8 feet.
.TUESDAY NIGHT...West winds 10 to 20 knots. A chance of showers.
Waves subsiding to 2 to 4 feet.
.WEDNESDAY...Northwest winds 20 to 30 knots. A chance of rain
showers. Waves building to 5 to 8 feet occasionally to 10 feet,
then subsiding to 3 to 5 feet occasionally to 7 feet.
.THURSDAY...South winds 15 to 25 knots increasing to 20 to
30 knots. Rain showers likely. Waves subsiding to 1 to 3 feet,
then building to 3 to 6 feet occasionally to 8 feet.

$$

LSZ261-022100-
MAFOR 0216/
Superior West...GALE WARNING IN EFFECT...11550 12560 11550 14650.
Waves 7 to 10 feet building to 9 to 12 feet this afternoon. Waves
9 to 13 feet subsiding to 6 to 10 feet tonight. Waves 6 to 10
feet Monday morning.

Superior North Central...GALE WARNING IN EFFECT...11550 13560
11660 13650. Waves 7 to 10 feet building to 10 to 15 feet this
afternoon. Waves 12 to 17 feet subsiding to 10 to 13 feet
tonight. Waves 10 to 13 feet Monday morning.

Superior South Central...GALE WARNING IN EFFECT...11540 13550
14650. A chance of showers this evening. Waves 3 to 5 feet
building to 6 to 9 feet this afternoon. Waves 6 to 10 feet
tonight. Waves 8 to 11 feet Monday morning.

Superior East...GALE WARNING IN EFFECT...14550 11550 13650. A
chance of showers tonight and Monday morning. Waves 5 to 7 feet
building to 9 to 12 feet this afternoon. Waves 10 to 14 feet
tonight and Monday 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