601
FZUS63 KMQT 150733
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
333 AM EDT Sat Jun 15 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 30.1 high pressure centered over Lake Superior will
build to 30.2 inches as it shifts over the central Great Lakes
today, continuing on toward New England Sunday. Deepening low
pressure near 29.4 inches tracks out of the High Plains Saturday
night, spinning northeast towards Hudson Bay Sunday into Monday as
it deepens to 29.0 inches. This low extends a 29.6 inch trough
over Lake Superior Sunday night before weak ridging of 29.9 inches
moves over Lake Superior from the Northern Plains Monday. A low
pressure around 29.5 inches looks to move off the Colorado Rockies
into the Northern Plains early next week. The low will track
across northern Minnesota at 29.5 inches by Tuesday night and
continue northeast across northern Ontario into Wednesday morning.
This low will support a 29.9 inch trough over Lake Superior
through Wednesday morning.


LSZ162-151545-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
333 AM EDT Sat Jun 15 2024 /233 AM CDT Sat Jun 15 2024/

.EARLY THIS MORNING...East winds 5 to 15 knots. Waves calm to
2 feet.
.TODAY...South winds 5 to 15 knots becoming east 10 to 20 knots
in the afternoon. A slight chance of showers by mid afternoon.
Waves calm to 2 feet.
.TONIGHT...East winds 10 to 20 knots increasing to 15 to 25 knots
late. A chance of showers through midnight. A chance of
thunderstorms. Showers likely after midnight. Waves building to
1 to 3 feet.
.SUNDAY...East winds 10 to 20 knots. A chance of showers and
thunderstorms. Waves building to 2 to 4 feet, then subsiding to
calm to 2 feet.
.SUNDAY NIGHT...Northeast winds 10 to 20 knots becoming west 5 to
15 knots after midnight. A chance of showers and thunderstorms.
Waves calm to 2 feet.
.MONDAY...West winds 5 to 15 knots becoming northeast 10 to
20 knots by mid afternoon. A chance of showers through early
afternoon. A chance of thunderstorms. Showers likely by mid
afternoon. Waves calm to 2 feet.
.MONDAY NIGHT...Northeast winds 10 to 20 knots veering east after
midnight. Thunderstorms likely through midnight. Showers likely.
A chance of thunderstorms after midnight. Waves calm to 2 feet.
.TUESDAY...South winds 10 to 20 knots veering west. Showers
likely and a chance of thunderstorms. Waves building to 1 to
3 feet, then subsiding to calm to 2 feet.
.WEDNESDAY...West winds 10 to 20 knots becoming north 5 to
15 knots. A chance of showers. Waves calm to 2 feet.

$$

LSZ263-151545-
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-
333 AM EDT Sat Jun 15 2024

.EARLY THIS MORNING...South winds 5 to 15 knots. Waves calm to
2 feet.
.TODAY...South winds 5 to 15 knots backing east late. Waves calm
to 2 feet.
.TONIGHT...South winds 5 to 15 knots becoming southeast 10 to
20 knots after midnight, then increasing to 15 to 25 knots late.
A chance of showers through midnight, then showers and a slight
chance of thunderstorms after midnight. Waves building to 2 to
4 feet.
.SUNDAY...Southeast winds 15 to 25 knots becoming south 10 to
20 knots in the afternoon, then becoming southeast 5 to 15 knots
late. A chance of showers and a slight chance of thunderstorms.
Waves building to 3 to 5 feet occasionally to 7 feet, then
subsiding to 1 to 3 feet.
.SUNDAY NIGHT...Southeast winds 5 to 15 knots veering west after
midnight. A chance of showers and thunderstorms. Waves subsiding
to calm to 2 feet.
.MONDAY...West winds 5 to 15 knots backing east by mid afternoon.
A chance of showers through early afternoon. A chance of
thunderstorms. Showers likely by mid afternoon. Waves calm to
2 feet.
.MONDAY NIGHT...East winds 5 to 15 knots. Showers likely through
midnight. A chance of thunderstorms. A chance of showers after
midnight. Waves calm to 2 feet.
.TUESDAY...South winds 10 to 20 knots diminishing to 5 to
15 knots. A chance of showers and thunderstorms. Waves building
to 1 to 3 feet.
.WEDNESDAY...West winds 5 to 15 knots veering north. A chance of
showers. Waves subsiding to calm to 2 feet.

$$

LSZ264-151545-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
333 AM EDT Sat Jun 15 2024

.EARLY THIS MORNING...South winds 5 to 15 knots. Waves calm to
2 feet.
.TODAY...South winds 10 to 20 knots backing southeast late. Waves
building to 2 to 4 feet.
.TONIGHT...South winds 10 to 20 knots becoming southeast 15 to
25 knots late. A chance of showers. Waves building to 3 to 5 feet
occasionally to 7 feet, then subsiding to 2 to 4 feet.
.SUNDAY...Southeast winds 15 to 25 knots diminishing to 10 to
20 knots late. A chance of showers and a slight chance of
thunderstorms. Waves building to 3 to 6 feet occasionally to
8 feet.
.SUNDAY NIGHT...South winds 5 to 15 knots veering southwest after
midnight. A slight chance of showers and thunderstorms. Waves
subsiding to calm to 2 feet.
.MONDAY...Southwest winds 5 to 15 knots backing southeast by mid
afternoon. A chance of showers. Waves calm to 2 feet.
.MONDAY NIGHT...East winds 5 to 15 knots veering southeast after
midnight. A chance of showers and thunderstorms. Waves calm to
2 feet.
.TUESDAY...South winds 10 to 20 knots diminishing to 5 to
15 knots. A chance of showers and thunderstorms. Waves building
to 1 to 3 feet.
.WEDNESDAY...West winds 5 to 15 knots veering north. A chance of
showers. Waves subsiding to calm to 2 feet.

$$

LSZ265-151545-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
333 AM EDT Sat Jun 15 2024

.EARLY THIS MORNING...South winds 10 to 20 knots. Waves calm to
2 feet.
.TODAY...South winds 10 to 20 knots becoming southeast 15 to
25 knots in the afternoon. Waves building to 1 to 3 feet.
.TONIGHT...South winds 15 to 25 knots becoming southeast 20 to
30 knots late. A slight chance of showers through midnight, then
showers after midnight. Waves building to 2 to 4 feet, then
subsiding to 1 to 3 feet.
.SUNDAY...Southeast winds 20 to 30 knots diminishing to 15 to
25 knots late. Showers through early afternoon. A slight chance
of thunderstorms. A chance of showers by mid afternoon. Waves
subsiding to 1 to 3 feet.
.SUNDAY NIGHT...South winds 10 to 20 knots becoming southwest
5 to 15 knots after midnight. A chance of showers and
thunderstorms. Waves subsiding to calm to 2 feet.
.MONDAY...West winds 5 to 15 knots becoming east 10 to 20 knots
by mid afternoon. A chance of showers and thunderstorms. Waves
calm to 2 feet.
.MONDAY NIGHT...Southeast winds 10 to 20 knots veering south
after midnight. A chance of showers and thunderstorms. Waves calm
to 2 feet.
.TUESDAY...South winds 15 to 25 knots diminishing to 10 to
20 knots. A chance of showers and thunderstorms. Waves calm to
2 feet.
.WEDNESDAY...West winds 10 to 20 knots becoming northwest 5 to
15 knots. A chance of showers. Waves calm to 2 feet.

$$

LSZ266-151545-
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-
333 AM EDT Sat Jun 15 2024

.EARLY THIS MORNING...South winds 5 to 15 knots. Waves calm to
2 feet.
.TODAY...South winds 10 to 20 knots increasing to 15 to 25 knots
in the afternoon, then backing southeast late. Waves building to
2 to 4 feet.
.TONIGHT...South winds 15 to 25 knots backing southeast late.
Showers after midnight. Waves building to 3 to 5 feet
occasionally to 7 feet, then subsiding to 2 to 4 feet.
.SUNDAY...Southeast winds 20 to 30 knots veering south in the
afternoon, then diminishing to 15 to 25 knots late. Showers
through early afternoon. A chance of thunderstorms. A chance of
showers by mid afternoon. Waves building to 3 to 6 feet
occasionally to 8 feet.
.SUNDAY NIGHT...South winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. A chance of showers and thunderstorms.
Waves subsiding to calm to 2 feet.
.MONDAY...West winds 5 to 15 knots becoming east 10 to 20 knots
by mid afternoon. A chance of showers and thunderstorms. Waves
calm to 2 feet.
.MONDAY NIGHT...Southeast winds 10 to 20 knots veering south
after midnight. A chance of showers and thunderstorms. Waves
building to 1 to 3 feet.
.TUESDAY...South winds 15 to 25 knots diminishing to 10 to
20 knots. A chance of showers. A chance of thunderstorms. Waves
building to 2 to 4 feet, then subsiding to 1 to 3 feet.
.WEDNESDAY...West winds 10 to 20 knots becoming northwest 5 to
15 knots. A chance of showers. Waves subsiding to calm to 2 feet.

$$

LSZ267-151545-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
333 AM EDT Sat Jun 15 2024

.EARLY THIS MORNING...South winds 5 to 15 knots. Waves calm to
2 feet.
.TODAY...South winds 10 to 20 knots backing southeast in the
afternoon. Waves calm to 2 feet.
.TONIGHT...South winds 10 to 20 knots becoming southeast 15 to
25 knots late. A chance of showers after midnight. Waves building
to 2 to 4 feet.
.SUNDAY...Southeast winds 20 to 30 knots becoming south 15 to
25 knots late. Showers and a slight chance of thunderstorms.
Waves building to 3 to 5 feet occasionally to 7 feet, then
subsiding to 2 to 4 feet.
.SUNDAY NIGHT...South winds 10 to 20 knots. A chance of showers
and thunderstorms. Waves subsiding to calm to 2 feet.
.MONDAY...Southwest winds 10 to 20 knots backing south by mid
afternoon. A chance of showers and thunderstorms. Waves calm to
2 feet.
.MONDAY NIGHT...Southeast winds 10 to 20 knots veering south
after midnight. A chance of showers and thunderstorms. Waves calm
to 2 feet.
.TUESDAY...South winds 15 to 25 knots. A chance of showers and
thunderstorms. Waves building to 2 to 4 feet, then subsiding to
1 to 3 feet.
.WEDNESDAY...West winds 10 to 20 knots becoming northwest 5 to
15 knots. A chance of showers and thunderstorms. Waves subsiding
to calm to 2 feet.

$$

LSZ261-151545-
MAFOR 1509/
Superior West 11300 11400 11300 13310 11320 11326. Waves 1 to 3
feet.

Superior North Central 11410 12420 12320 11330 12430. A chance of
showers overnight. Waves 1 to 3 feet today. Waves 2 to 4 feet
tonight.

Superior South Central 11310 11420 13320 12420 11326. Waves 1 to
3 feet today. Waves 2 to 4 feet subsiding to 1 to 3 feet tonight.

Superior East 11400 11410 13310 12420 11320. A chance of showers
overnight. Waves 2 feet or less today. Waves 2 to 3 feet tonight.

$$

WFO MQT

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weather.gov/mqt/glftable

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