000
FZUS63 KMQT 240741
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
341 AM EDT Wed Apr 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...30.4 inch high pressure over northern Ontario will
build southeast and into the Great Lakes region Wednesday and
remain in place over the lower Lakes Thursday. A 29.2 inch low
will develop over western portions of Kansas by Friday morning and
track northeast toward Lake Superior on Saturday (weakening to
29.4 inches). The low fills to 29.8 inches on early Sunday morning
over eastern Lake Superior as it continues to spin northeast.

LSZ162-241545-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
341 AM EDT Wed Apr 24 2024 /241 AM CDT Wed Apr 24 2024/

.EARLY THIS MORNING...East winds 10 to 20 knots. Waves 3 to
5 feet occasionally to 7 feet subsiding to 2 to 4 feet.
.TODAY...East winds 10 to 20 knots veering southeast in the
afternoon, then becoming east 5 to 15 knots late. Waves subsiding
to 1 to 3 feet.
.TONIGHT...East winds 10 to 20 knots diminishing to 5 to 15 knots
after midnight, then backing northeast late. Waves subsiding to
calm to 2 feet.
.THURSDAY...Northeast winds 5 to 15 knots becoming east 10 to
20 knots in the afternoon. Waves building to 1 to 3 feet.
.THURSDAY NIGHT...East winds 10 to 20 knots veering southeast
after midnight. Waves subsiding to calm to 2 feet, then building
to 1 to 3 feet.
.FRIDAY...East winds 15 to 25 knots increasing to 20 to 30 knots
by mid afternoon. A chance of rain showers. Waves building to
3 to 6 feet occasionally to 8 feet.
.FRIDAY NIGHT...East winds 15 to 25 knots. Rain showers. Waves
3 to 6 feet occasionally to 8 feet.
.SATURDAY...Northeast winds 15 to 25 knots backing north. Rain
showers, then a chance of rain showers. Waves subsiding to 1 to
3 feet, then building to 3 to 5 feet occasionally to 7 feet.
.SUNDAY...Northeast winds 20 to 30 knots. Rain showers. Waves
building to 4 to 8 feet occasionally to 10 feet.

$$

LSZ263-241545-
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-
341 AM EDT Wed Apr 24 2024

.EARLY THIS MORNING...Northeast winds 5 to 15 knots. Waves 3 to
6 feet occasionally to 8 feet.
.TODAY...East winds 5 to 15 knots. Waves subsiding to 1 to
3 feet.
.TONIGHT...Southeast winds 5 to 15 knots veering south after
midnight. Waves subsiding to calm to 2 feet.
.THURSDAY...South winds 5 to 15 knots backing east late. Waves
calm to 2 feet.
.THURSDAY NIGHT...Southeast winds 15 to 25 knots becoming south
10 to 20 knots after midnight. Waves building to 2 to 4 feet.
.FRIDAY...Southeast winds 15 to 25 knots becoming east 20 to
30 knots by mid afternoon. A chance of rain showers by mid
afternoon. Waves building to 3 to 6 feet occasionally to 8 feet.
.FRIDAY NIGHT...East winds 20 to 30 knots. Rain showers. Waves
building to 4 to 8 feet occasionally to 10 feet.
.SATURDAY...East winds 15 to 25 knots backing north. Rain
showers. A chance of rain showers. Waves subsiding to 2 to
4 feet, then building to 3 to 6 feet occasionally to 8 feet.
.SUNDAY...Northeast winds 20 to 30 knots. A chance of rain
showers, then rain showers. Waves building to 4 to 8 feet
occasionally to 10 feet.

$$

LSZ264-241545-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
341 AM EDT Wed Apr 24 2024

.EARLY THIS MORNING...Northeast winds 10 to 20 knots. Waves 3 to
6 feet occasionally to 8 feet.
.TODAY...Northeast winds 5 to 15 knots veering southeast late.
Waves subsiding to calm to 2 feet.
.TONIGHT...South winds 5 to 15 knots. Waves calm to 2 feet.
.THURSDAY...South winds 5 to 15 knots backing southeast late.
Waves calm to 2 feet.
.THURSDAY NIGHT...Southeast winds 15 to 25 knots veering south
after midnight. Waves building to 3 to 5 feet occasionally to
7 feet.
.FRIDAY...Southeast winds 15 to 25 knots increasing to 20 to
30 knots by mid afternoon. Waves building to 3 to 6 feet
occasionally to 8 feet.
.FRIDAY NIGHT...Southeast gales to 40 knots. Rain showers. Waves
building to 5 to 9 feet occasionally to 11 feet.
.SATURDAY...Southeast winds 20 to 30 knots becoming north 15 to
25 knots. Rain showers. A chance of rain showers. Waves subsiding
to 3 to 6 feet occasionally to 8 feet.
.SUNDAY...Northeast winds 15 to 25 knots becoming east 20 to
30 knots. A chance of rain showers, then rain showers likely.
Waves building to 4 to 7 feet occasionally to 9 feet.

$$

LSZ265-241545-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
341 AM EDT Wed Apr 24 2024

.EARLY THIS MORNING...Northeast winds 15 to 25 knots. Waves 4 to
8 feet occasionally to 10 feet.
.TODAY...Northeast winds 10 to 20 knots becoming east 5 to
15 knots in the afternoon. Waves subsiding to calm to 2 feet.
.TONIGHT...Southeast winds 10 to 20 knots becoming south 5 to
15 knots after midnight. Waves calm to 2 feet.
.THURSDAY...South winds 5 to 15 knots backing southeast in the
afternoon, then becoming east 10 to 20 knots late. Waves calm to
2 feet.
.THURSDAY NIGHT...Southeast winds 10 to 20 knots veering south
after midnight. Waves calm to 2 feet.
.FRIDAY...Southeast winds 15 to 25 knots increasing to 20 to
30 knots by mid afternoon. Waves building to 3 to 5 feet
occasionally to 7 feet.
.FRIDAY NIGHT...Southeast winds 20 to 30 knots. Rain showers.
Waves building to 4 to 7 feet occasionally to 9 feet, then
subsiding to 3 to 6 feet occasionally to 8 feet.
.SATURDAY...South winds 20 to 30 knots veering northwest. Rain
showers. A chance of thunderstorms. A chance of rain showers.
Waves subsiding to 1 to 3 feet, then building to 3 to 5 feet
occasionally to 7 feet.
.SUNDAY...Northeast winds 20 to 30 knots veering east. Rain
showers. Waves building to 3 to 6 feet occasionally to 8 feet.

$$

LSZ266-241545-
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-
341 AM EDT Wed Apr 24 2024

.EARLY THIS MORNING...Northeast winds 15 to 25 knots. Waves 4 to
8 feet occasionally to 10 feet.
.TODAY...Northeast winds 10 to 20 knots diminishing to 5 to
15 knots in the afternoon, then becoming east less than 10 knots
late. Waves subsiding to calm to 2 feet.
.TONIGHT...South winds 5 to 15 knots increasing to 10 to 20 knots
late. Waves calm to 2 feet.
.THURSDAY...South winds 5 to 15 knots becoming southeast 10 to
20 knots late. Waves calm to 2 feet.
.THURSDAY NIGHT...South winds 10 to 20 knots increasing to 15 to
25 knots after midnight. Waves building to 2 to 4 feet.
.FRIDAY...Southeast winds 15 to 25 knots increasing to 20 to
30 knots by mid afternoon. Waves building to 4 to 7 feet
occasionally to 9 feet.
.FRIDAY NIGHT...Southeast gales to 40 knots. Rain showers. Waves
building to 6 to 9 feet occasionally to 11 feet.
.SATURDAY...South winds 20 to 30 knots backing north. Rain
showers. A chance of rain showers. Waves subsiding to 3 to 6 feet
occasionally to 8 feet.
.SUNDAY...Northeast winds 20 to 30 knots veering east. Rain
showers. Waves subsiding to 3 to 5 feet occasionally to 7 feet,
then building to 4 to 7 feet occasionally to 9 feet.

$$

LSZ267-241545-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
341 AM EDT Wed Apr 24 2024

.EARLY THIS MORNING...Northeast winds 20 to 30 knots. Waves 5 to
8 feet occasionally to 10 feet subsiding to 3 to 6 feet
occasionally to 8 feet.
.TODAY...Northeast winds 10 to 20 knots becoming north 5 to
15 knots in the afternoon. Waves subsiding to calm to 2 feet.
.TONIGHT...Northwest winds 5 to 15 knots backing south after
midnight. Waves calm to 2 feet.
.THURSDAY...South winds 5 to 15 knots becoming southeast 10 to
20 knots in the afternoon, then backing east late. Waves calm to
2 feet.
.THURSDAY NIGHT...South winds 10 to 20 knots becoming southeast
15 to 25 knots after midnight. Waves building to 2 to 4 feet.
.FRIDAY...Southeast winds 15 to 25 knots increasing to 20 to
30 knots by mid afternoon. Waves building to 4 to 7 feet
occasionally to 9 feet.
.FRIDAY NIGHT...Southeast gales to 35 knots. A chance of showers
through midnight, then showers after midnight. Waves building to
6 to 9 feet occasionally to 11 feet.
.SATURDAY...South gales to 35 knots becoming west 15 to 25 knots.
Rain showers. A chance of rain showers. Waves subsiding to 2 to
4 feet, then building to 3 to 5 feet occasionally to 7 feet.
.SUNDAY...Northeast winds 15 to 25 knots becoming east 20 to
30 knots. Rain showers. Waves building to 3 to 5 feet
occasionally to 7 feet.

$$

LSZ261-241545-
MAFOR 2409/
Superior West 11220 12210 11300 11210 13200. Waves 3 to 5 feet
subsiding to 1 to 4 feet today and tonight.

Superior North Central 11120 11110 11200 11300 12310 12410. Waves
3 to 6 feet subsiding to 1 to 2 feet today and tonight.

Superior South Central 11120 11110 11100 12200 11310 12410. Waves
5 to 7 feet subsiding to 1 to 3 feet today and tonight.

Superior East 11130 11120 11110 11800 11700 11600 12400. Waves 5
to 7 feet subsiding to 1 to 3 feet today. Waves 1 foot or less
tonight.

$$

GS

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

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