152
FZUS63 KMQT 130754
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
354 AM EDT Thu Jun 13 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 29.4 inch low pressure system over eastern James
Bay drags a 29.6 inch trough over Lake Superior through this
morning. 30.1 inch ridging moves into the High Plains this evening
into Friday, becoming centered over Lake Superior Friday
afternoon. This high pressure builds to 30.2 inches and moves over
the central Great Lakes Saturday, and will continue shifting east
toward New England on Sunday. Deepening low pressure near 29.2
inches emerges out of the High Plains, moving northeast towards
Hudson Bay Sunday into Monday, extending a 29.6 inch trough over
Lake Superior.

LSZ162-131600-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
354 AM EDT Thu Jun 13 2024 /254 AM CDT Thu Jun 13 2024/

.EARLY THIS MORNING...Southwest winds 10 to 20 knots. Patchy fog.
Waves calm to 2 feet.
.TODAY...West winds 10 to 20 knots increasing to 15 to 25 knots
in the afternoon. Patchy fog through early afternoon. A slight
chance of showers and thunderstorms. Waves building to 1 to
3 feet, then subsiding to calm to 2 feet.
.TONIGHT...West winds 10 to 20 knots becoming northwest 5 to
15 knots after midnight, then veering north late. Waves calm to
2 feet.
.FRIDAY...East winds 5 to 15 knots increasing to 10 to 20 knots
in the afternoon. Waves calm to 2 feet.
.FRIDAY NIGHT...Northeast winds 5 to 15 knots. Waves calm to
2 feet.
.SATURDAY...East winds 5 to 15 knots increasing to 10 to 20 knots
by mid afternoon. Waves calm to 2 feet.
.SATURDAY NIGHT...East winds 10 to 20 knots. A chance of showers
through midnight, then showers likely after midnight. Waves
building to 1 to 3 feet.
.SUNDAY...East winds 10 to 20 knots veering west. A chance of
showers. Waves subsiding to calm to 2 feet.
.MONDAY...West winds 10 to 20 knots veering northeast. A chance
of showers. Waves calm to 2 feet.

$$

LSZ263-131600-
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-
354 AM EDT Thu Jun 13 2024

.EARLY THIS MORNING...Southwest winds 5 to 15 knots. Patchy fog.
Waves calm to 2 feet.
.TODAY...West winds 10 to 20 knots. Patchy fog through early
afternoon. A chance of showers and a slight chance of
thunderstorms. Waves building to 1 to 3 feet.
.TONIGHT...West winds 5 to 15 knots veering north late. Waves
subsiding to calm to 2 feet.
.FRIDAY...Northeast winds 5 to 15 knots veering east in the
afternoon. Waves calm to 2 feet.
.FRIDAY NIGHT...East winds 5 to 15 knots veering southeast after
midnight. Waves calm to 2 feet.
.SATURDAY...Southeast winds 5 to 15 knots backing east by mid
afternoon. Waves calm to 2 feet.
.SATURDAY NIGHT...Southeast winds 5 to 15 knots increasing to
10 to 20 knots after midnight. A chance of showers through
midnight, then showers likely after midnight. Waves building to
1 to 3 feet.
.SUNDAY...Southeast winds 10 to 20 knots becoming southwest 5 to
15 knots. A chance of showers. Waves subsiding to calm to 2 feet.
.MONDAY...Southwest winds 5 to 15 knots backing east. A chance of
showers. Waves calm to 2 feet.

$$

LSZ264-131600-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
354 AM EDT Thu Jun 13 2024

.EARLY THIS MORNING...South winds 5 to 15 knots. Patchy fog.
Waves calm to 2 feet.
.TODAY...Southwest winds 5 to 15 knots becoming west winds to 10
to 20 knots in the afternoon, then diminishing to 5 to 15 knots
late. Patchy fog. A slight chance of showers and thunderstorms.
Waves building to 1 to 3 feet, then subsiding to calm to 2 feet.
.TONIGHT...West winds 5 to 15 knots veering north late. Waves
calm to 2 feet.
.FRIDAY...North winds 5 to 15 knots veering south late. Waves
calm to 2 feet.
.FRIDAY NIGHT...South winds less than 10 knots increasing to 5 to
15 knots after midnight. Waves calm to 2 feet.
.SATURDAY...South winds 5 to 15 knots backing southeast by mid
afternoon. Waves calm to 2 feet.
.SATURDAY NIGHT...Southeast winds 10 to 20 knots. A chance of
showers. Waves building to 2 to 4 feet.
.SUNDAY...Southeast winds 10 to 20 knots becoming southwest 5 to
15 knots. A chance of showers. Waves building to 3 to 5 feet
occasionally to 7 feet, then subsiding to calm to 2 feet.
.MONDAY...Southwest winds 5 to 15 knots backing east. A chance of
showers. Waves calm to 2 feet.

$$

LSZ265-131600-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
354 AM EDT Thu Jun 13 2024

.EARLY THIS MORNING...Southwest winds 10 to 20 knots. Patchy fog.
Waves calm to 2 feet.
.TODAY...West winds 10 to 20 knots becoming northwest 15 to
25 knots in the afternoon. A slight chance of showers and
thunderstorms. Waves building to 1 to 3 feet, then subsiding to
calm to 2 feet.
.TONIGHT...Northwest winds 10 to 20 knots becoming west 5 to
15 knots after midnight, then veering northwest late. Waves calm
to 2 feet.
.FRIDAY...North winds 5 to 15 knots increasing to 10 to 20 knots
in the afternoon, then diminishing to 5 to 15 knots late. Waves
calm to 2 feet.
.FRIDAY NIGHT...South winds 5 to 15 knots backing southeast after
midnight. Waves calm to 2 feet.
.SATURDAY...Southeast winds 5 to 15 knots increasing to 10 to
20 knots by mid afternoon. Waves calm to 2 feet.
.SATURDAY NIGHT...South winds 10 to 20 knots becoming southeast
15 to 25 knots after midnight. A chance of showers. Waves calm to
2 feet.
.SUNDAY...Southeast winds 15 to 25 knots becoming south 10 to
20 knots. A chance of showers. Waves building to 1 to 3 feet,
then subsiding to calm to 2 feet.
.MONDAY...Southwest winds 10 to 20 knots backing southeast. A
chance of showers. Waves calm to 2 feet.

$$

LSZ266-131600-
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-
354 AM EDT Thu Jun 13 2024

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

$$

LSZ267-131600-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
354 AM EDT Thu Jun 13 2024

.EARLY THIS MORNING...South winds 10 to 20 knots. Waves 1 to
3 feet.
.TODAY...Southwest winds 10 to 20 knots veering west in the
afternoon. A slight chance of showers and thunderstorms. Patchy
fog by mid afternoon. Waves subsiding to calm to 2 feet, then
building to 1 to 3 feet.
.TONIGHT...West winds 10 to 20 knots veering northwest after
midnight. Waves subsiding to calm to 2 feet.
.FRIDAY...Northwest winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon. Waves calm to 2 feet.
.FRIDAY NIGHT...Northwest winds 5 to 15 knots backing southeast
after midnight. Waves calm to 2 feet.
.SATURDAY...Southeast winds 5 to 15 knots increasing to 10 to
20 knots by mid afternoon. Waves calm to 2 feet.
.SATURDAY NIGHT...Southeast winds 10 to 20 knots increasing to
15 to 25 knots after midnight. A chance of showers after
midnight. Waves building to 1 to 3 feet.
.SUNDAY...Southeast winds 15 to 25 knots becoming south 10 to
20 knots. Showers likely. A chance of showers. Waves building to
2 to 4 feet, then subsiding to calm to 2 feet.
.MONDAY...South winds 10 to 20 knots. A chance of showers. Waves
calm to 2 feet.

$$

LSZ261-131600-
MAFOR 1309/
Superior West 11510 13620 12610 11600 11700. Waves 1 to 3 feet.

Superior North Central 12610 11710 11620 13610 11710. Waves 1 to
3 feet.

Superior South Central 11510 11610 11620 12720 11710 11600 11700.
Waves 1 to 3 feet.

Superior East 12510 12610 14710. Waves 2 to 3 feet.

$$

Jablonski

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

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