012
FZUS63 KMQT 281357
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
957 AM EDT Fri Jun 28 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 29.5 inch low pressure over eastern North Dakota will
weaken to 29.6 inches as it tracks across northern Lake Superior
tonight and early Saturday morning. As the low heads toward southern
Quebec on Saturday, 30.2 inch high pressure will build over the
Northern Plains. The high will then build to 30.3 inches as it
shifts east, reaching the western Great Lakes Sunday evening. As the
high weakens to 30.2 inches while moving to the Lower Great Lakes by
Monday evening, a 29.6 inch low pressure trough will move out over
the Northern Plains. A 29.5 inch low will then develop along this
trough and move to far northern Ontario by Tuesday evening. The
trough will sweep across Lake Superior late Tuesday afternoon and
night.

LSZ162-282200-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
957 AM EDT Fri Jun 28 2024 /857 AM CDT Fri Jun 28 2024/

.REST OF TODAY...Southeast winds 10 to 20 knots veering south in
the afternoon. Patchy fog through early afternoon. Showers, then
scattered showers by mid afternoon. A slight chance of
thunderstorms. Waves 2 to 4 feet subsiding to 1 to 3 feet.
.TONIGHT...Southwest winds 10 to 20 knots veering west after
midnight. Patchy fog. A slight chance of thunderstorms through
midnight. A chance of showers. Waves subsiding to calm to 2 feet.
.SATURDAY...Northwest winds 10 to 20 knots veering north in the
afternoon. A slight chance of showers through early afternoon.
Waves calm to 2 feet.
.SATURDAY NIGHT...West winds 10 to 20 knots becoming northwest
5 to 15 knots after midnight. Waves calm to 2 feet.
.SUNDAY...West winds 5 to 15 knots backing southwest by mid
afternoon. Waves calm to 2 feet.
.SUNDAY NIGHT...South winds 5 to 15 knots. Waves calm to 2 feet.
.MONDAY...Southeast winds 10 to 20 knots increasing to 15 to
25 knots. A chance of showers, then showers and a chance of
thunderstorms. Waves building to 2 to 4 feet.
.TUESDAY...Southwest winds 15 to 25 knots becoming west 10 to
20 knots. A chance of showers. Waves subsiding to calm to 2 feet.

$$

LSZ263-282200-
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-
957 AM EDT Fri Jun 28 2024

.REST OF TODAY...South winds 15 to 25 knots. Patchy fog. Showers,
then scattered showers and a slight chance of thunderstorms by
mid afternoon. Waves 2 to 4 feet.
.TONIGHT...Southwest winds 5 to 15 knots veering west after
midnight. Patchy fog. A chance of showers and a slight chance of
thunderstorms. Waves subsiding to calm to 2 feet.
.SATURDAY...Northwest winds 10 to 20 knots becoming north 15 to
25 knots in the afternoon, then diminishing to 10 to 20 knots
late. A slight chance of thunderstorms through early afternoon. A
slight chance of showers. Waves building to 2 to 4 feet, then
subsiding to 1 to 3 feet.
.SATURDAY NIGHT...Northwest winds 5 to 15 knots backing west
after midnight. Waves subsiding to calm to 2 feet.
.SUNDAY...West winds 5 to 15 knots backing southwest by mid
afternoon. Waves calm to 2 feet.
.SUNDAY NIGHT...Southwest winds 5 to 15 knots backing south after
midnight. Waves calm to 2 feet.
.MONDAY...Southeast winds 10 to 20 knots veering south. Showers.
Waves building to 2 to 4 feet.
.TUESDAY...South winds 15 to 25 knots becoming southwest 5 to
15 knots. A chance of showers. Waves subsiding to 1 to 3 feet.

$$

LSZ264-282200-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
957 AM EDT Fri Jun 28 2024

.REST OF TODAY...South winds 10 to 20 knots becoming southeast
15 to 25 knots, then veering south late. Patchy fog. Showers, then
scattered showers and a slight chance of thunderstorms by mid
afternoon. Waves 2 to 4 feet building to 3 to 6 feet occasionally
to 8 feet.
.TONIGHT...South winds 10 to 20 knots becoming west 5 to 15 knots
after midnight. Patchy fog. A chance of showers and a slight
chance of thunderstorms. Waves subsiding to 1 to 3 feet.
.SATURDAY...Northwest winds 10 to 20 knots becoming north 15 to
25 knots in the afternoon. A slight chance of thunderstorms
through early afternoon. A slight chance of showers. Waves
building to 3 to 6 feet occasionally to 8 feet.
.SATURDAY NIGHT...North winds 10 to 20 knots becoming northwest
5 to 15 knots after midnight. Waves subsiding to calm to 2 feet.
.SUNDAY...West winds 5 to 15 knots. Waves calm to 2 feet.
.SUNDAY NIGHT...Southwest winds 5 to 15 knots. Waves calm to
2 feet.
.MONDAY...Southeast winds 10 to 20 knots becoming south 15 to
25 knots. A chance of showers. Waves building to 3 to 5 feet
occasionally to 7 feet.
.TUESDAY...South winds 15 to 25 knots becoming southwest 5 to
15 knots. Showers likely. Waves building to 3 to 6 feet
occasionally to 8 feet, then subsiding to 1 to 3 feet.

$$

LSZ265-282200-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
957 AM EDT Fri Jun 28 2024

.REST OF TODAY...South winds 15 to 25 knots becoming southeast
20 to 30 knots in the afternoon, then becoming south 15 to
25 knots late. Showers. A slight chance of thunderstorms by mid
afternoon. Patchy fog by mid afternoon. Waves 1 to 3 feet
building to 3 to 5 feet occasionally to 7 feet.
.TONIGHT...South winds 10 to 20 knots veering west late. Patchy
fog. A chance of showers and a slight chance of thunderstorms.
Waves subsiding to calm to 2 feet.
.SATURDAY...Northwest winds 10 to 20 knots increasing to 20 to
30 knots in the afternoon, then veering north late. A slight
chance of showers. Waves building to 3 to 6 feet occasionally to
8 feet.
.SATURDAY NIGHT...North winds 15 to 25 knots becoming northwest
10 to 20 knots after midnight. Waves subsiding to 1 to 3 feet.
.SUNDAY...Northwest winds 10 to 20 knots. Waves subsiding to calm
to 2 feet.
.SUNDAY NIGHT...West winds 5 to 15 knots backing southwest after
midnight. Waves calm to 2 feet.
.MONDAY...Southeast winds 10 to 20 knots increasing to 15 to
25 knots. A chance of showers. Waves building to 1 to 3 feet.
.TUESDAY...South winds 15 to 25 knots becoming southwest 10 to
20 knots. Showers likely, then a chance of showers. Waves
building to 2 to 4 feet, then subsiding to calm to 2 feet.

$$

LSZ266-282200-
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-
957 AM EDT Fri Jun 28 2024

.REST OF TODAY...South winds 15 to 25 knots increasing to 20 to
30 knots. Scattered showers, then showers and a slight chance of
thunderstorms by mid afternoon. Patchy fog by mid afternoon. Waves
2 to 4 feet building to 3 to 6 feet occasionally to 8 feet.
.TONIGHT...South winds 15 to 25 knots diminishing to 10 to
20 knots after midnight, then veering west late. Patchy dense
fog. A chance of showers and a slight chance of thunderstorms.
Waves subsiding to 1 to 3 feet.
.SATURDAY...West winds 10 to 20 knots becoming northwest 15 to
25 knots in the afternoon, then increasing to 20 to 30 knots
late. A slight chance of showers and thunderstorms through early
afternoon. Waves building to 4 to 7 feet occasionally to 9 feet.
.SATURDAY NIGHT...Northwest winds 15 to 25 knots. A slight chance
of showers through midnight. Waves building to 5 to 8 feet
occasionally to 10 feet, then subsiding to 2 to 4 feet.
.SUNDAY...Northwest winds 10 to 20 knots backing west by mid
afternoon. Waves subsiding to calm to 2 feet.
.SUNDAY NIGHT...West winds 5 to 15 knots backing southwest after
midnight. Waves calm to 2 feet.
.MONDAY...South winds 10 to 20 knots increasing to 15 to
25 knots. Waves building to 3 to 5 feet occasionally to 7 feet.
.TUESDAY...South winds 15 to 25 knots becoming southwest 10 to
20 knots. Showers likely, then a chance of showers. Waves
building to 3 to 6 feet occasionally to 8 feet, then subsiding to
1 to 3 feet.

$$

LSZ267-282200-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
957 AM EDT Fri Jun 28 2024

.REST OF TODAY...South winds 10 to 20 knots increasing to 15 to
25 knots, then becoming southeast 20 to 30 knots late. Scattered
showers by late morning, then showers by mid afternoon. Waves 1 to
3 feet building to 3 to 5 feet occasionally to 7 feet.
.TONIGHT...South winds 20 to 30 knots diminishing to 15 to
25 knots after midnight, then veering southwest late. Patchy fog.
Showers likely through midnight. A slight chance of
thunderstorms. A chance of showers after midnight. Waves
subsiding to 1 to 3 feet.
.SATURDAY...West winds 10 to 20 knots increasing to 15 to
25 knots in the afternoon, then becoming northwest 20 to 30 knots
late. A slight chance of thunderstorms through early afternoon. A
slight chance of showers. 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 after midnight. A slight chance of showers through
midnight. Waves building to 5 to 8 feet occasionally to 10 feet,
then subsiding to 2 to 4 feet.
.SUNDAY...Northwest winds 10 to 20 knots backing west by mid
afternoon. Waves subsiding to calm to 2 feet.
.SUNDAY NIGHT...West winds 5 to 15 knots. Waves calm to 2 feet.
.MONDAY...Southeast winds 5 to 15 knots becoming south 10 to
20 knots. A chance of showers. Waves building to 2 to 4 feet.
.TUESDAY...South winds 20 to 30 knots diminishing to 10 to
20 knots. Showers likely, then a chance of showers. Waves
building to 3 to 5 feet occasionally to 7 feet, then subsiding to
calm to 2 feet.

$$
LSZ261-282200-
MAFOR 2815/
Superior West 11326 11420 19426 11410 11510 13610 11720. Waves 1
to 4 feet.

Superior North Central 12336 11436 11420 11510 11610 19614 11710
11720. Waves 2 to 6 feet.

Superior South Central 11436 11346 11440 19446 12420 11510 11610
11720. Waves 2 to 5 feet this afternoon subsiding to 1 to 3 feet
tonight and Saturday morning.

Superior East 11420 19426 12336 11436 11430 11530 11514 11610.
Waves 2 to 6 feet.

$$

Rolfson

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

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