622
FZUS63 KMQT 291957
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
357 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 29.6 inch low pressure over northeastern Ontario
this afternoon continues east over southern Quebec through this
evening while a 30.2 inch high pressure shifts east over the
Northern Plains. The high then builds to 30.3 inches as it moves
east, reaching the western Great Lakes Sunday morning. 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 in the Northern
Plains. The low lifts into into northern Ontario by Tuesday
evening, pulling a 29.7 inch trough over Lake Superior late
Tuesday night through Thursday morning. A 29.8 inch low approaches
the Great Lakes from the central Plains on Thursday, deepening to
29.7 inches over the Upper Great Lakes on Friday.

LSZ162-300400-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
357 PM EDT Sat Jun 29 2024 /257 PM CDT Sat Jun 29 2024/

.LATE THIS AFTERNOON...Northwest winds 15 to 25 knots. A slight
chance of showers and thunderstorms. Waves 2 to 4 feet.
.TONIGHT...Northwest winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. Waves subsiding to calm to 2 feet.
.SUNDAY...Northwest 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.

$$

LSZ263-300400-
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-
357 PM EDT Sat Jun 29 2024

.LATE THIS AFTERNOON...North winds 15 to 25 knots. A slight
chance of showers. Patchy fog. Waves 2 to 4 feet.
.TONIGHT...North winds 15 to 25 knots becoming northwest 5 to
15 knots after midnight. A slight chance of showers through
midnight. Waves subsiding to calm to 2 feet.
.SUNDAY...Northwest winds 5 to 15 knots backing southwest in the
afternoon. 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.

$$

LSZ264-300400-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
357 PM EDT Sat Jun 29 2024

.LATE THIS AFTERNOON...North winds 15 to 25 knots. A slight
chance of showers and thunderstorms. Patchy fog. Waves 3 to 6
feet occasionally to 8 feet.
.TONIGHT...North winds 15 to 25 knots becoming northwest 10 to
20 knots after midnight, then diminishing to 5 to 15 knots late.
A slight chance of showers through midnight. Waves subsiding to
1 to 3 feet.
.SUNDAY...Northwest winds 5 to 15 knots backing west in the
afternoon. Waves subsiding to calm to 2 feet, then 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.

$$

LSZ265-300400-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
357 PM EDT Sat Jun 29 2024

.LATE THIS AFTERNOON...Northwest winds 20 to 30 knots. A slight
chance of showers. Patchy fog. Waves 2 to 4 feet building to 3 to
6 feet occasionally to 8 feet.
.TONIGHT...Northwest winds 20 to 30 knots diminishing to 10 to
20 knots. A slight chance of showers through midnight. Waves
building to 4 to 7 feet occasionally to 9 feet, then subsiding to
2 to 4 feet.
.SUNDAY...Northwest winds 10 to 20 knots becoming west 5 to
15 knots 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.

$$

LSZ266-300400-
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-
357 PM EDT Sat Jun 29 2024

.LATE THIS AFTERNOON...Northwest winds 20 to 30 knots. Patchy fog.
Waves 3 to 6 feet occasionally to 8 feet.
.TONIGHT...North winds 20 to 30 knots diminishing to 15 to
25 knots after midnight. A slight chance of showers. Waves
building to 5 to 8 feet occasionally to 10 feet, then subsiding
to 3 to 6 feet occasionally to 8 feet.
.SUNDAY...Northwest winds 10 to 20 knots. 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.

$$

LSZ267-300400-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
357 PM EDT Sat Jun 29 2024

.LATE THIS AFTERNOON...Northwest winds 20 to 30 knots. Patchy
fog. Waves 2 to 4 feet building to 3 to 6 feet occasionally to
8 feet.
.TONIGHT...Northwest winds 20 to 30 knots veering north after
midnight. A slight chance of thunderstorms through midnight. A
chance of showers. Waves building to 5 to 8 feet occasionally to
10 feet, then subsiding to 3 to 6 feet occasionally to 8 feet.
.SUNDAY...North winds 15 to 25 knots backing northwest in the
afternoon, then diminishing to 10 to 20 knots late. Waves
subsiding to 2 to 4 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.

$$

LSZ261-300400-
MAFOR 2921/
Superior West 11820 12710 13700 11600 11510. Waves 1 to 4 feet.

Superior North Central 12830 11720 13710 11600 11610. Waves 3 to
6 feet subsiding to 1 to 4 feet tonight and Sunday.

Superior South Central 12740 12730 12720 11710 11700. Waves 3 to
7 through tonight. Waves 1 to 5 feet Sunday.

Superior East 11730 11740 12830 12820 12720. A chance of showers
this evening. Waves 3 to 7 feet through tonight. Waves 2 to 5
Sunday.

$$

Jablonski

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

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