014
FZUS63 KMQT 300152
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
952 PM EDT Sat Jun 29 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 29.8 inch low pressure trough extending from
southern Quebec across the Great Lakes region will continue to
move southeast overnight. Meanwhile, a 30.2 inch high pressure
over North Dakota will build to 30.3 inches as it moves southeast,
settling over the western Great Lakes region during Sunday
afternoon and Sunday night. As the high weakens to 30.2 inches
while moving to the Lower Great Lakes by Monday evening, a 29.5
inch low will develop over the Northern Plains. This low will
deepen to 29.4 inches while lifting into northern Ontario by
Tuesday evening. An associated 29.7 inch trough will sweep across
Lake Superior Tuesday night and Wednesday morning. In its wake, a
29.9 inch high pressure ridge will shift east, reaching the
western Great Lakes on Thursday. A 29.7 inch low pressure
organizing over the Plains on Thursday will then track to the
western Great Lakes region on Friday.

LSZ162-301000-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
952 PM EDT Sat Jun 29 2024 /852 PM CDT Sat Jun 29 2024/

.REST OF TONIGHT...Northwest winds 10 to 20 knots diminishing to
5 to 15 knots late. Waves calm to 2 feet.
.SUNDAY...West winds 5 to 15 knots backing southwest in the
afternoon. Waves calm to 2 feet.
.SUNDAY NIGHT...South winds 5 to 15 knots veering southwest after
midnight. Waves calm to 2 feet.
.MONDAY...South winds 5 to 15 knots becoming east 10 to 20 knots
by mid afternoon. Waves calm to 2 feet.
.MONDAY NIGHT...Southeast winds 15 to 25 knots. Showers and a
chance of thunderstorms. Waves building to 2 to 4 feet.
.TUESDAY...South winds 15 to 25 knots diminishing to 10 to
20 knots by mid afternoon. A chance of showers. Waves subsiding
to 1 to 3 feet.
.TUESDAY NIGHT...Southwest winds 10 to 20 knots veering west
after midnight. A chance of showers. Waves subsiding to calm to
2 feet.
.WEDNESDAY...West winds 15 to 25 knots diminishing to 10 to
20 knots. Waves building to 3 to 5 feet occasionally to 7 feet,
then subsiding to calm to 2 feet.
.THURSDAY...Southwest winds 5 to 15 knots becoming northeast
10 to 20 knots. A chance of showers. Waves calm to 2 feet.

$$

LSZ263-301000-
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-
952 PM EDT Sat Jun 29 2024

.REST OF TONIGHT...Northwest winds 5 to 15 knots. Waves 2 to
4 feet subsiding to calm to 2 feet.
.SUNDAY...West winds 5 to 15 knots backing southwest late. Waves
building to 1 to 3 feet.
.SUNDAY NIGHT...Southwest winds 5 to 15 knots. Waves subsiding to
calm to 2 feet.
.MONDAY...South winds 5 to 15 knots backing east by mid
afternoon. Waves calm to 2 feet.
.MONDAY NIGHT...South winds 10 to 20 knots. A chance of showers
through midnight, then showers after midnight. Waves building to
2 to 4 feet.
.TUESDAY...South winds 15 to 25 knots. A chance of showers. Waves
subsiding to 1 to 3 feet.
.TUESDAY NIGHT...South winds 5 to 15 knots veering southwest
after midnight. A chance of showers. Waves subsiding to calm to
2 feet, then building to 1 to 3 feet.
.WEDNESDAY...West winds 15 to 25 knots diminishing to 10 to
20 knots. Waves building to 3 to 5 feet occasionally to 7 feet,
then subsiding to calm to 2 feet.
.THURSDAY...Southwest winds 5 to 15 knots backing east. A chance
of showers. Waves calm to 2 feet.

$$

LSZ264-301000-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
952 PM EDT Sat Jun 29 2024

.REST OF TONIGHT...North winds 10 to 20 knots backing northwest
after midnight, then diminishing to 5 to 15 knots late. Isolated
showers through late evening. Waves 3 to 6 feet occasionally to 8
feet subsiding to calm to 2 feet.
.SUNDAY...Northwest winds 5 to 15 knots backing west in the
afternoon. Waves building to 1 to 3 feet.
.SUNDAY NIGHT...West winds 5 to 15 knots backing southwest late.
Waves subsiding to calm to 2 feet.
.MONDAY...Southwest winds 5 to 15 knots backing southeast by mid
afternoon. Waves calm to 2 feet.
.MONDAY NIGHT...South winds 10 to 20 knots. A chance of showers.
Waves building to 2 to 4 feet.
.TUESDAY...South winds 15 to 25 knots. Showers likely through
early afternoon, then a chance of showers by mid afternoon. Waves
building to 3 to 6 feet occasionally to 8 feet.
.TUESDAY NIGHT...South winds 10 to 20 knots becoming southwest
5 to 15 knots after midnight. A chance of showers. Waves
subsiding to 1 to 3 feet.
.WEDNESDAY...West winds 15 to 25 knots diminishing to 10 to
20 knots. Waves building to 3 to 5 feet occasionally to 7 feet,
then subsiding to 1 to 3 feet.
.THURSDAY...West winds 5 to 15 knots backing southeast. A chance
of showers. Waves subsiding to calm to 2 feet.

$$

LSZ265-301000-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
952 PM EDT Sat Jun 29 2024

.REST OF TONIGHT...North winds 20 to 30 knots diminishing to 15
to 25 knots after midnight, then becoming northwest 10 to 20 knots
late. Isolated showers through late evening. Waves 4 to 7 feet
occasionally to 9 feet subsiding to 2 to 4 feet.
.SUNDAY...Northwest winds 10 to 20 knots backing west late. Waves
subsiding to calm to 2 feet.
.SUNDAY NIGHT...West winds 5 to 15 knots. Waves calm to 2 feet.
.MONDAY...South winds 5 to 15 knots becoming southeast 10 to
20 knots by mid afternoon. Waves calm to 2 feet.
.MONDAY NIGHT...South winds 15 to 25 knots. A chance of showers
after midnight. Waves calm to 2 feet.
.TUESDAY...South winds 15 to 25 knots. Showers likely through
early afternoon. A chance of showers by mid afternoon. Waves
building to 2 to 4 feet.
.TUESDAY NIGHT...South winds 15 to 25 knots becoming southwest
10 to 20 knots after midnight. Showers likely through midnight. A
chance of thunderstorms. A chance of showers after midnight.
Waves subsiding to calm to 2 feet.
.WEDNESDAY...West winds 10 to 20 knots. Waves calm to 2 feet.
.THURSDAY...East winds 5 to 15 knots veering southeast. A chance
of showers. Waves calm to 2 feet.

$$

LSZ266-301000-
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-
952 PM EDT Sat Jun 29 2024

.REST OF TONIGHT...Northwest winds 20 to 30 knots diminishing to
15 to 25 knots late. Isolated showers through late evening. Waves
6 to 9 feet occasionally to 11 feet subsiding to 3 to 6 feet
occasionally to 8 feet.
.SUNDAY...Northwest winds 10 to 20 knots backing west late. Waves
subsiding to 1 to 3 feet.
.SUNDAY NIGHT...West winds 5 to 15 knots. Waves subsiding to calm
to 2 feet.
.MONDAY...Southwest winds 5 to 15 knots becoming southeast 10 to
20 knots by mid afternoon. Waves calm to 2 feet.
.MONDAY NIGHT...South winds 10 to 20 knots increasing to 15 to
25 knots after midnight. A chance of showers after midnight.
Waves building to 2 to 4 feet.
.TUESDAY...South winds 20 to 30 knots. Showers likely through
early afternoon, then a chance of showers by mid afternoon. Waves
building to 3 to 6 feet occasionally to 8 feet.
.TUESDAY NIGHT...South winds 15 to 25 knots diminishing to 10 to
20 knots after midnight. Showers likely and a chance of
thunderstorms. Waves subsiding to 1 to 3 feet.
.WEDNESDAY...West winds 10 to 20 knots. Waves building to 2 to
4 feet, then subsiding to 1 to 3 feet.
.THURSDAY...West winds 5 to 15 knots backing southeast. A chance
of showers. Waves subsiding to calm to 2 feet.

$$

LSZ267-301000-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
952 PM EDT Sat Jun 29 2024

.REST OF TONIGHT...Northwest winds 20 to 30 knots. Isolated
showers through late evening. Waves 5 to 9 feet occasionally to
11 feet, then subsiding to 3 to 6 feet occasionally to 8 feet.
.SUNDAY...North winds 15 to 25 knots backing northwest in the
afternoon. Waves subsiding to 1 to 3 feet.
.SUNDAY NIGHT...Northwest winds 10 to 20 knots diminishing to
5 to 15 knots after midnight, then backing west late. Waves
subsiding to calm to 2 feet.
.MONDAY...West winds 5 to 15 knots backing southeast by mid
afternoon. Waves calm to 2 feet.
.MONDAY NIGHT...South winds 5 to 15 knots increasing to 10 to
20 knots after midnight. Waves building to 1 to 3 feet.
.TUESDAY...South winds 15 to 25 knots. Showers likely. Waves
building to 3 to 5 feet occasionally to 7 feet.
.TUESDAY NIGHT...South winds 15 to 25 knots. Showers and a chance
of thunderstorms. Waves subsiding to 1 to 3 feet.
.WEDNESDAY...West winds 10 to 20 knots diminishing to 5 to
15 knots. Waves subsiding to calm to 2 feet.
.THURSDAY...West winds 5 to 15 knots backing southeast. A chance
of showers. Waves calm to 2 feet.

$$
LSZ261-301000-
MAFOR 3003/
Superior West 11710 13700 11600 12510 11500. Waves 2 feet or
less.

Superior North Central 11720 13710 14610. Waves 3 to 5 feet
subsiding to 1 to 3 feet overnight. Waves 1 to 3 feet Sunday and
Sunday evening.

Superior South Central 11740 11730 12720 12710 12600. Waves 3 to
7 feet overnight subsiding to 1 to 3 feet Sunday. Waves around 1
foot Sunday evening.

Superior East 12740 11730 13720 12710. Waves 6 to 9 feet subsiding
to 4 to 7 feet overnight and to 2 to 4 feet Sunday and Sunday
evening.

$$

Rolfson

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

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