723
FZUS63 KMQT 250240
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
940 PM EST Sun Nov 24 2024

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... 29.7 inch low pressure developing over the Southern
Plains today will lift northeast, crossing the Great Lakes region
during Monday and Monday night. As the low deepens to 29.5 inches
while tracking to southern Quebec on Tuesday, a 30.3 inch ridge
will build southeast to the Middle Mississippi River Valley. The
low will drift north over Quebec during Tuesday night and
Wednesday as the ridge weakens to 30.1 inches while drifting east
and approaching the Upper Great Lakes. On Thursday, the low, at a
pressure of 29.7 inches, will spin near James Bay while a ridge of
30.5 inches builds southeast into the Plains. 30.2 inch high
pressure nudges into far western Lake Superior Friday.

LSZ162-251045-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
940 PM EST Sun Nov 24 2024 /840 PM CST Sun Nov 24 2024/

.REST OF TONIGHT...East winds 15 to 25 knots diminishing to 10 to
20 knots late. A slight chance of snow late in the evening. A
slight chance of rain. Snow after midnight. Waves 3 to 5 feet
occasionally to 7 feet subsiding to 2 to 4 feet.
.MONDAY...East winds 10 to 20 knots backing north by mid
afternoon. Snow, possibly mixed with rain. Waves subsiding to
1 to 3 feet, then building to 2 to 4 feet.
.MONDAY NIGHT...North winds 15 to 25 knots backing northwest by
midnight, then increasing to 20 to 30 knots late. A slight chance
of rain showers in the evening. A chance of snow showers. Waves
building to 3 to 6 feet occasionally to 8 feet.
.TUESDAY...Northwest winds 15 to 25 knots. A slight chance of
snow showers. Waves subsiding to 1 to 3 feet.
.TUESDAY NIGHT...Northwest winds 10 to 20 knots. Waves subsiding
to calm to 2 feet.
.WEDNESDAY...Northwest winds 10 to 20 knots. Waves calm to
2 feet.
.WEDNESDAY NIGHT...Northwest winds 10 to 20 knots. Waves calm to
2 feet.
.THURSDAY...Northwest winds 10 to 20 knots increasing to 15 to
25 knots. A chance of snow showers. Waves building to 1 to
3 feet.
.FRIDAY...Northwest winds 20 to 30 knots diminishing to 15 to
25 knots. A chance of snow showers. Waves building to 3 to 5 feet
occasionally to 7 feet, then subsiding to 2 to 4 feet.

$$

LSZ263-251045-
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-
940 PM EST Sun Nov 24 2024

.REST OF TONIGHT...East winds 10 to 20 knots diminishing to 5 to
15 knots late. A chance of snow, possibly mixed with rain after
midnight. Waves 2 to 4 feet subsiding to 1 to 3 feet.
.MONDAY...East winds 10 to 20 knots becoming northeast 5 to
15 knots by mid afternoon. Snow, possibly mixed with rain. Waves
building to 2 to 4 feet.
.MONDAY NIGHT...North winds 15 to 25 knots becoming northwest
20 to 30 knots late. Snow showers likely, possibly mixed with
rain showers in the evening, then a chance of snow showers after
midnight. Waves subsiding to 1 to 3 feet, then building to 5 to
8 feet occasionally to 10 feet.
.TUESDAY...Northwest winds 15 to 25 knots. A chance of snow
showers. Waves subsiding to 3 to 5 feet occasionally to 7 feet.
.TUESDAY NIGHT...Northwest winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. A chance of snow showers. Waves
subsiding to calm to 2 feet.
.WEDNESDAY...Northwest winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon. Waves calm to 2 feet.
.WEDNESDAY NIGHT...Northwest winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. Waves calm to 2 feet.
.THURSDAY...Northwest winds 10 to 20 knots. A chance of snow
showers. Waves building to 2 to 4 feet.
.FRIDAY...Northwest winds 15 to 25 knots. A chance of snow
showers. Waves building to 3 to 6 feet occasionally to 8 feet.

$$

LSZ264-251045-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
940 PM EST Sun Nov 24 2024

.REST OF TONIGHT...East winds 5 to 15 knots. A chance of snow
after midnight. Waves calm to 2 feet building to 1 to 3 feet.
.MONDAY...East winds 10 to 20 knots diminishing to 5 to 15 knots
by mid afternoon. Snow, possibly mixed with rain. Waves building
to 2 to 4 feet, then subsiding to 1 to 3 feet.
.MONDAY NIGHT...Northeast winds 5 to 15 knots becoming north
10 to 20 knots by midnight, then increasing to 15 to 25 knots
late. Snow showers likely. Waves building to 3 to 6 feet
occasionally to 8 feet.
.TUESDAY...Northwest winds 15 to 25 knots. Snow showers likely in
the morning, then a chance of snow showers in the afternoon.
Waves 3 to 6 feet occasionally to 8 feet.
.TUESDAY NIGHT...Northwest winds 10 to 20 knots. A chance of snow
showers. Waves subsiding to 2 to 4 feet.
.WEDNESDAY...Northwest winds 10 to 20 knots. Waves subsiding to
calm to 2 feet.
.WEDNESDAY NIGHT...Northwest winds 10 to 20 knots. A chance of
snow showers. Waves calm to 2 feet.
.THURSDAY...Northwest winds 10 to 20 knots. A chance of snow
showers. Waves building to 1 to 3 feet.
.FRIDAY...Northwest winds 15 to 25 knots. A chance of snow
showers. Waves building to 3 to 6 feet occasionally to 8 feet.

$$

LSZ265-251045-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
940 PM EST Sun Nov 24 2024

.REST OF TONIGHT...East winds 10 to 20 knots. A chance of snow
showers. A chance of rain after midnight. Waves calm to 2 feet.
.MONDAY...East winds 10 to 20 knots. A slight chance of rain in
the morning. Snow. Rain in the afternoon. Waves building to 2 to
4 feet.
.MONDAY NIGHT...Northeast winds 10 to 20 knots backing northwest
by midnight, then increasing to 20 to 30 knots late. Snow showers
likely, possibly mixed with rain showers. Waves subsiding to 1 to
3 feet, then building to 3 to 6 feet occasionally to 8 feet.
.TUESDAY...Northwest winds 20 to 30 knots. A slight chance of
rain showers in the morning. Snow showers. Waves building to 4 to
7 feet occasionally to 9 feet, then subsiding to 3 to 6 feet
occasionally to 8 feet.
.TUESDAY NIGHT...Northwest winds 15 to 25 knots. Snow showers.
Waves subsiding to 1 to 3 feet.
.WEDNESDAY...Northwest winds 10 to 20 knots. A chance of snow
showers. Waves subsiding to calm to 2 feet.
.WEDNESDAY NIGHT...Northwest winds 10 to 20 knots. Snow showers
likely. Waves calm to 2 feet.
.THURSDAY...Northwest winds 15 to 25 knots. Snow showers. Waves
calm to 2 feet.
.FRIDAY...Northwest winds 20 to 30 knots. Snow showers likely.
Waves building to 2 to 4 feet.

$$

LSZ266-251045-
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-
940 PM EST Sun Nov 24 2024

.REST OF TONIGHT...East winds 10 to 20 knots. A chance of snow,
possibly mixed with rain after midnight. Waves calm to 2 feet.
.MONDAY...East winds 10 to 20 knots increasing to 15 to 25 knots.
Snow, possibly mixed with rain. Waves building to 2 to 4 feet.
.MONDAY NIGHT...Northeast winds 10 to 20 knots backing north by
midnight, then becoming northwest 15 to 25 knots late. Rain
showers in the evening. Snow showers. A slight chance of rain
showers after midnight. Waves subsiding to 1 to 3 feet, then
building to 3 to 6 feet occasionally to 8 feet.
.TUESDAY...Northwest winds 20 to 30 knots. Snow showers, possibly
mixed with rain. Waves building to 6 to 10 feet occasionally to
13 feet.
.TUESDAY NIGHT...Northwest winds 15 to 25 knots. Snow showers.
Waves subsiding to 3 to 6 feet occasionally to 8 feet.
.WEDNESDAY...Northwest winds 15 to 25 knots. Snow showers likely.
Waves subsiding to 1 to 3 feet.
.WEDNESDAY NIGHT...Northwest winds 15 to 25 knots. Snow showers.
Waves subsiding to calm to 2 feet.
.THURSDAY...Northwest winds 15 to 25 knots. Snow showers. Waves
building to 1 to 3 feet.
.FRIDAY...Northwest winds 20 to 30 knots. Snow showers. Waves
building to 4 to 7 feet occasionally to 9 feet.

$$

LSZ267-251045-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
940 PM EST Sun Nov 24 2024

.REST OF TONIGHT...Northeast winds 10 to 20 knots veering east by
midnight. A slight chance of rain and snow after midnight. Waves
calm to 2 feet.
.MONDAY...East winds 10 to 20 knots increasing to 15 to 25 knots.
Snow. A slight chance of rain in the afternoon. Waves building to
1 to 3 feet.
.MONDAY NIGHT...East winds 10 to 20 knots backing north by
midnight, then backing northwest late. Snow showers, possibly
mixed with rain. Waves subsiding to calm to 2 feet, then building
to 1 to 3 feet.
.TUESDAY...Northwest winds 15 to 25 knots increasing to 20 to
30 knots in the afternoon. Snow showers, possibly mixed with
rain. Waves building to 6 to 9 feet occasionally to 11 feet.
.TUESDAY NIGHT...Northwest winds 20 to 30 knots diminishing to
15 to 25 knots after midnight. Snow showers. Waves subsiding to
3 to 6 feet occasionally to 8 feet.
.WEDNESDAY...Northwest winds 15 to 25 knots. Snow showers likely.
Waves subsiding to 1 to 3 feet.
.WEDNESDAY NIGHT...Northwest winds 15 to 25 knots. Snow showers.
Waves subsiding to calm to 2 feet.
.THURSDAY...Northwest winds 15 to 25 knots. Snow showers. Waves
building to 1 to 3 feet.
.FRIDAY...Northwest winds 15 to 25 knots. Snow showers. Waves
building to 4 to 7 feet occasionally to 9 feet.

$$
LSZ261-251045-
MAFOR 2504/
Superior West 12220 12227 11117 11127 11827 11837. A chance of
rain overnight. Waves 2 to 5 feet.

Superior North Central 12210 12220 12227 12117. Waves 2 to 4
feet.

Superior South Central 13210 13227 11127 11117. Waves 1 to 2 feet
overnight building to 2 to 4 feet Monday and Monday evening.

Superior East 13210 11220 13227 11217. Waves 1 to 3 feet.

$$

BW

Experimental modernized open lake forecast is available online at
weather.gov/mqt/glftable

Graphical marine forecasts are available online at:
weather.gov/greatlakes