814
FZUS63 KMQT 110801
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
401 AM EDT Tue Jun 11 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 30.0 inch high pressure currently centered over the
Upper Great Lakes this morning will continue to drift southeast
toward the lower lakes through early this afternoon. A 29.5 inch
low pressure system near Lake Manitoba this morning will move to
near James Bay by Wednesday evening, dragging a 29.6 inch trough
over Lake Superior Thursday morning. 30.1 inch ridging moves into
the High Plains late Thursday into Friday, becoming centered over
Lake Superior on Friday afternoon. High pressure builds to 30.2
inches and moves over the central Great Lakes Saturday. This high
will continue shifting east toward New England on Sunday as
troughing sets up west of Lake Superior.

LSZ162-111615-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
401 AM EDT Tue Jun 11 2024 /301 AM CDT Tue Jun 11 2024/

.EARLY THIS MORNING...East winds less than 10 knots. Waves calm
to 2 feet.
.TODAY...Southeast winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon, then veering south late. A chance of
rain showers. A slight chance of thunderstorms by mid afternoon.
Waves calm to 2 feet.
.TONIGHT...South winds 10 to 20 knots veering southwest after
midnight. A slight chance of showers and thunderstorms through
midnight. Waves calm to 2 feet.
.WEDNESDAY...Southwest winds 10 to 20 knots increasing to 15 to
25 knots in the afternoon. A chance of showers and thunderstorms
by mid afternoon. Waves building to 1 to 3 feet.
.WEDNESDAY NIGHT...Southwest winds 10 to 20 knots becoming west
15 to 25 knots after midnight. Showers likely through midnight. A
chance of thunderstorms. A slight chance of showers after
midnight. Waves subsiding to calm to 2 feet.
.THURSDAY...West winds 15 to 25 knots. Waves building to 1 to
3 feet.
.THURSDAY NIGHT...Northwest winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. Waves subsiding to calm to 2 feet.
.FRIDAY...South winds 5 to 15 knots backing east. Waves calm to
2 feet.
.SATURDAY...East winds 10 to 20 knots increasing to 15 to
25 knots. A chance of showers, then showers likely and a chance
of thunderstorms. Waves building to 1 to 3 feet, then subsiding
to calm to 2 feet.

$$

LSZ263-111615-
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-
401 AM EDT Tue Jun 11 2024

.EARLY THIS MORNING...South winds 5 to 15 knots. Waves calm to
2 feet.
.TODAY...South winds 5 to 15 knots. A chance of rain showers.
Waves calm to 2 feet.
.TONIGHT...South winds 5 to 15 knots veering southwest after
midnight. A slight chance of thunderstorms through midnight. A
slight chance of showers. Waves building to 1 to 3 feet.
.WEDNESDAY...Southwest winds 10 to 20 knots. A chance of showers
and a slight chance of thunderstorms by mid afternoon. Waves
building to 2 to 4 feet, then subsiding to 1 to 3 feet.
.WEDNESDAY NIGHT...Southwest winds 10 to 20 knots. Showers likely
through midnight. A chance of thunderstorms. A slight chance of
showers after midnight. Waves subsiding to calm to 2 feet, then
building to 1 to 3 feet.
.THURSDAY...West winds 15 to 25 knots. Waves building to 2 to
4 feet, then subsiding to 1 to 3 feet.
.THURSDAY NIGHT...West winds 5 to 15 knots veering northwest
after midnight. Waves subsiding to calm to 2 feet.
.FRIDAY...Southwest winds 5 to 15 knots backing south. Waves calm
to 2 feet.
.SATURDAY...Southeast winds 5 to 15 knots increasing to 10 to
20 knots. Showers likely. Waves building to 1 to 3 feet.

$$

LSZ264-111615-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
401 AM EDT Tue Jun 11 2024

.EARLY THIS MORNING...South winds 5 to 15 knots. Waves calm to
2 feet.
.TODAY...South winds 5 to 15 knots backing southeast in the
afternoon, then veering south late. A chance of rain showers by
mid afternoon. Waves building to 1 to 3 feet.
.TONIGHT...South winds 10 to 20 knots becoming southwest 5 to
15 knots late. A chance of showers. Waves building to 2 to
4 feet, then subsiding to 1 to 3 feet.
.WEDNESDAY...Southwest winds 10 to 20 knots. A chance of showers
and a slight chance of thunderstorms by mid afternoon. Waves 1 to
3 feet.
.WEDNESDAY NIGHT...South winds 5 to 15 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.
.THURSDAY...West winds 15 to 25 knots. Waves building to 1 to
3 feet.
.THURSDAY NIGHT...Northwest winds 5 to 15 knots. Waves subsiding
to calm to 2 feet.
.FRIDAY...Southwest winds 5 to 15 knots backing south. Waves calm
to 2 feet.
.SATURDAY...Southeast winds 5 to 15 knots increasing to 10 to
20 knots. A chance of showers. Waves building to 1 to 3 feet.

$$

LSZ265-111615-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
401 AM EDT Tue Jun 11 2024

.EARLY THIS MORNING...South winds less than 10 knots. Waves calm
to 2 feet.
.TODAY...Southeast winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon, then veering south late. A chance of
showers by mid afternoon. Waves building to 1 to 3 feet.
.TONIGHT...South winds 10 to 20 knots veering southwest late. A
chance of showers. Waves subsiding to calm to 2 feet.
.WEDNESDAY...Southwest winds 10 to 20 knots backing south late. A
slight chance of showers and thunderstorms by mid afternoon.
Waves calm to 2 feet.
.WEDNESDAY NIGHT...South winds 10 to 20 knots becoming southwest
15 to 25 knots after midnight. Showers likely through midnight. A
chance of thunderstorms. A chance of showers after midnight.
Waves calm to 2 feet.
.THURSDAY...West winds 15 to 25 knots. Waves calm to 2 feet.
.THURSDAY NIGHT...Northwest winds 10 to 20 knots backing west
after midnight. Waves calm to 2 feet.
.FRIDAY...Northwest winds 10 to 20 knots becoming south 5 to
15 knots. Waves calm to 2 feet.
.SATURDAY...Southeast winds 5 to 15 knots increasing to 15 to
25 knots. A chance of showers. Waves calm to 2 feet.

$$

LSZ266-111615-
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-
401 AM EDT Tue Jun 11 2024

.EARLY THIS MORNING...South winds 5 to 15 knots. Waves calm to
2 feet.
.TODAY...South winds 5 to 15 knots backing southeast in the
afternoon, then increasing to 10 to 20 knots late. A chance of
showers by mid afternoon. Waves building to 1 to 3 feet.
.TONIGHT...South winds 15 to 25 knots diminishing to 10 to
20 knots after midnight. A chance of showers. Waves building to
2 to 4 feet, then subsiding to 1 to 3 feet.
.WEDNESDAY...South winds 10 to 20 knots. A slight chance of
showers and thunderstorms by mid afternoon. Waves subsiding to
calm to 2 feet.
.WEDNESDAY NIGHT...South winds 10 to 20 knots becoming southwest
15 to 25 knots after midnight. Showers likely and a chance of
thunderstorms. Waves calm to 2 feet.
.THURSDAY...West winds 15 to 25 knots. Waves building to 1 to
3 feet.
.THURSDAY NIGHT...Northwest winds 10 to 20 knots. Waves subsiding
to calm to 2 feet.
.FRIDAY...Northwest winds 5 to 15 knots backing south. Waves calm
to 2 feet.
.SATURDAY...Southeast winds 5 to 15 knots increasing to 15 to
25 knots. A chance of showers. Waves building to 1 to 3 feet.

$$

LSZ267-111615-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
401 AM EDT Tue Jun 11 2024

.EARLY THIS MORNING...Southeast winds less than 10 knots. Waves
calm to 2 feet.
.TODAY...Southeast winds 5 to 15 knots increasing to 10 to
20 knots late. A slight chance of showers by mid afternoon. Waves
calm to 2 feet.
.TONIGHT...South winds 10 to 20 knots. A chance of showers. Waves
building to 1 to 3 feet.
.WEDNESDAY...South winds 10 to 20 knots. A slight chance of
showers and thunderstorms by mid afternoon. Waves subsiding to
calm to 2 feet.
.WEDNESDAY NIGHT...South winds 10 to 20 knots. A chance of
showers through midnight. A chance of thunderstorms. Showers
likely after midnight. Waves calm to 2 feet.
.THURSDAY...Southwest winds 15 to 25 knots veering west by mid
afternoon. A chance of showers. Waves calm to 2 feet.
.THURSDAY NIGHT...Northwest winds 10 to 20 knots. Waves calm to
2 feet.
.FRIDAY...Northwest winds 10 to 20 knots becoming south 5 to
15 knots. Waves calm to 2 feet.
.SATURDAY...Southeast winds 5 to 15 knots increasing to 15 to
25 knots. A chance of showers. Waves building to 1 to 3 feet.

$$

LSZ261-111615-
MAFOR 1109/
Superior West 11300 11310 11410 11416 12410 12510. Waves 2 feet
or less.

Superior North Central 11400 11410 11310 11320 13420 11520. A
chance of showers this evening. Waves 1 to 3 feet.

Superior South Central 11300 11410 12310 13420 11410. A chance of
showers this afternoon and evening. Waves 1 to 3 feet.

Superior East 11300 11400 11300 12310 13420. A chance of showers
tonight. Waves 1 to 2 feet today building to 2 to 4 feet tonight.

$$

Jablonski

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

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