396
FZUS63 KMQT 221446
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
946 AM EST Fri Nov 22 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...A 29.2 inch low pressure will spin near the Mid-
Atlantic Coast today while a 30.2 inch high pressure ridge spans
the Plains States. During tonight and Saturday, a 29.6 inch trough
will develop from the Mid-Atlantic States to James Bay as the
Plains ridge weakens to 30.1 inches while drifting to the
Mississippi Valley. The ridge will weaken further to 30.0 inches
as it shifts across the Upper Great Lakes during Saturday night
and early Sunday. A 29.7 inch low developing over Colorado and
Kansas on Sunday will then lift northeast, reaching the Upper
Great Lakes on Monday. As the low deepens to 29.5 inches while
tracking to southern Quebec on Tuesday, 30.3 inch high pressure
will build southeast into the Middle Mississippi River Valley.

LSZ162-222300-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
946 AM EST Fri Nov 22 2024 /846 AM CST Fri Nov 22 2024/

.REST OF TODAY...North winds 10 to 20 knots backing northwest.
Waves 1 to 3 feet subsiding to calm to 2 feet.
.TONIGHT...Northwest winds 10 to 20 knots. Waves building to 1 to
3 feet.
.SATURDAY...Northwest winds 10 to 20 knots diminishing to 5 to
15 knots by mid afternoon. Waves subsiding to calm to 2 feet.
.SATURDAY NIGHT...North winds 5 to 15 knots veering east after
midnight. Waves calm to 2 feet.
.SUNDAY...East winds 10 to 20 knots increasing to 15 to 25 knots
in the afternoon. A chance of rain showers. Waves building to
1 to 3 feet.
.SUNDAY NIGHT...East winds 10 to 20 knots backing north after
midnight. Rain showers likely. Waves 1 to 3 feet.
.MONDAY...Northwest winds 15 to 25 knots. Rain and snow showers
likely, then a chance of snow showers. Waves building to 3 to
5 feet occasionally to 7 feet, then subsiding to 2 to 4 feet.
.TUESDAY...Northwest winds 10 to 20 knots becoming north 5 to
15 knots. Waves subsiding to calm to 2 feet.

$$

LSZ263-222300-
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-
946 AM EST Fri Nov 22 2024

.REST OF TODAY...North winds 10 to 20 knots becoming northwest
5 to 15 knots by mid afternoon. Waves 2 to 4 feet subsiding to
1 to 3 feet.
.TONIGHT...Northwest winds 5 to 15 knots increasing to 10 to
20 knots late. Waves 1 to 3 feet.
.SATURDAY...Northwest winds 5 to 15 knots. Waves 1 to 3 feet.
.SATURDAY NIGHT...North winds 5 to 15 knots veering northeast
after midnight. Waves subsiding to calm to 2 feet.
.SUNDAY...East winds 5 to 15 knots increasing to 10 to 20 knots
in the afternoon. Waves building to 1 to 3 feet.
.SUNDAY NIGHT...East winds 10 to 20 knots backing northeast after
midnight. A chance of rain showers in the evening. Rain showers
likely after midnight. Waves building to 2 to 4 feet.
.MONDAY...Northwest winds 15 to 25 knots. Rain and snow showers
likely, then a chance of snow showers. Waves building to 3 to
6 feet occasionally to 8 feet.
.TUESDAY...Northwest winds 15 to 25 knots becoming north 5 to
15 knots. Waves subsiding to calm to 2 feet.

$$

LSZ264-222300-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
946 AM EST Fri Nov 22 2024

.REST OF TODAY...North winds 15 to 25 knots diminishing to 10 to
20 knots. Waves 3 to 5 feet occasionally to 7 feet.
.TONIGHT...Northwest winds 10 to 20 knots. Waves 2 to 4 feet.
.SATURDAY...Northwest winds 10 to 20 knots. Waves 2 to 4 feet.
.SATURDAY NIGHT...North winds 5 to 15 knots. Waves subsiding to
calm to 2 feet.
.SUNDAY...East winds 5 to 15 knots. Waves calm to 2 feet.
.SUNDAY NIGHT...East winds 5 to 15 knots increasing to 10 to
20 knots after midnight. A chance of rain showers in the evening,
then rain showers likely after midnight. Waves building to 2 to
4 feet.
.MONDAY...North winds 15 to 25 knots backing northwest. Rain and
snow showers likely, then a chance of snow showers. Waves
building to 3 to 6 feet occasionally to 8 feet.
.TUESDAY...Northwest winds 15 to 25 knots becoming north 5 to
15 knots. Waves subsiding to calm to 2 feet.

$$

LSZ265-222300-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
946 AM EST Fri Nov 22 2024

.REST OF TODAY...North winds 20 to 30 knots becoming northwest
15 to 25 knots by mid afternoon. A slight chance of showers.
Waves 3 to 6 feet occasionally to 8 feet.
.TONIGHT...Northwest winds 15 to 25 knots. A slight chance of
rain showers. Waves subsiding to 2 to 4 feet, then building to
3 to 5 feet occasionally to 7 feet.
.SATURDAY...Northwest winds 15 to 25 knots. A slight chance of
rain showers in the morning. A slight chance of snow showers in
the afternoon. Waves subsiding to 2 to 4 feet.
.SATURDAY NIGHT...Northwest winds 5 to 15 knots veering north
after midnight. A slight chance of snow showers. A slight chance
of rain showers after midnight. Waves subsiding to calm to
2 feet.
.SUNDAY...East winds 5 to 15 knots becoming southeast 10 to
20 knots in the afternoon. Waves calm to 2 feet.
.SUNDAY NIGHT...Southeast winds 10 to 20 knots veering south
after midnight. Rain showers. Waves calm to 2 feet.
.MONDAY...Northwest winds 15 to 25 knots increasing to 20 to
30 knots. Rain showers. Snow showers. Waves building to 3 to
5 feet occasionally to 7 feet.
.TUESDAY...Northwest winds 15 to 25 knots diminishing to 10 to
20 knots. Snow showers likely, then a chance of snow showers.
Waves subsiding to calm to 2 feet.

$$

LSZ266-222300-
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-
946 AM EST Fri Nov 22 2024

.REST OF TODAY...North winds 20 to 30 knots. A slight chance of
showers. Waves 4 to 7 feet occasionally to 9 feet subsiding to
3 to 6 feet occasionally to 8 feet, then building to 4 to 7 feet
occasionally to 9 feet.
.TONIGHT...Northwest winds 20 to 30 knots diminishing to 15 to
25 knots by midnight. A slight chance of rain showers. Waves
subsiding to 3 to 6 feet occasionally to 8 feet.
.SATURDAY...Northwest winds 15 to 25 knots. A slight chance of
rain showers. A slight chance of snow showers in the afternoon.
Waves 3 to 6 feet occasionally to 8 feet.
.SATURDAY NIGHT...Northwest winds 10 to 20 knots becoming north
5 to 15 knots after midnight. A chance of snow showers. Waves
subsiding to 1 to 3 feet.
.SUNDAY...North winds 5 to 15 knots becoming east 10 to 20 knots
in the afternoon. Waves subsiding to calm to 2 feet.
.SUNDAY NIGHT...Southeast winds 10 to 20 knots. Rain showers.
Waves building to 1 to 3 feet.
.MONDAY...Northwest winds 10 to 20 knots increasing to 20 to
30 knots. Rain showers, then snow showers. Waves building to 3 to
6 feet occasionally to 8 feet.
.TUESDAY...Northwest winds 15 to 25 knots becoming north 10 to
20 knots. Snow showers. Waves building to 4 to 7 feet
occasionally to 9 feet, then subsiding to 1 to 3 feet.

$$

LSZ267-222300-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
946 AM EST Fri Nov 22 2024

.REST OF TODAY...North winds 15 to 25 knots increasing to 20 to
30 knots by mid afternoon. Waves 3 to 6 feet occasionally to
8 feet.
.TONIGHT...North winds 15 to 25 knots backing northwest by
midnight. A slight chance of rain showers. Waves 3 to 6 feet
occasionally to 8 feet.
.SATURDAY...Northwest winds 15 to 25 knots. A slight chance of
rain showers. A slight chance of snow showers in the afternoon.
Waves 3 to 6 feet occasionally to 8 feet.
.SATURDAY NIGHT...Northwest winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. A chance of rain showers in the
evening. A chance of snow showers. Waves subsiding to 1 to
3 feet.
.SUNDAY...North winds 5 to 15 knots becoming east 10 to 20 knots
in the afternoon. Waves subsiding to calm to 2 feet.
.SUNDAY NIGHT...Southeast winds 10 to 20 knots. Rain showers.
Waves calm to 2 feet.
.MONDAY...Northwest winds 10 to 20 knots increasing to 15 to
25 knots. Rain showers. Snow showers. Waves building to 3 to
6 feet occasionally to 8 feet.
.TUESDAY...Northwest winds 15 to 25 knots diminishing to 10 to
20 knots. Snow showers. Waves subsiding to 1 to 3 feet.

$$
LSZ261-222300-
MAFOR 2216/
Superior West 11710 11720 12710 12720 12710. Waves 1 to 3 feet.

Superior North Central 12830 11730 14720 11720. Waves 3 to 5 feet
this afternoon. Waves 2 to 4 feet tonight and Saturday morning.

Superior South Central 12830 12730 14720. Waves 3 to 6 feet.

Superior East 13830 11730 11720 13730. Waves 3 to 6 feet.

$$

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