170
FZUS63 KMQT 120200
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
1000 PM EDT Sun Aug 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 30.1 inch high pressure ridge extending southeast from
Manitoba to the Mid Mississippi Valley and Ohio Valley continues
to shift east tonight, settling over the Great Lakes region Monday
through Wednesday. As the ridge then drifts east Wednesday night
and Thursday toward the Atlantic Coast, a 29.8 inch low pressure
trough will move across the Plains to the Mississippi Valley. On
Friday, this low pressure trough looks to begin moving through the
Great Lakes.

LSZ162-121000-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
1000 PM EDT Sun Aug 11 2024 /900 PM CDT Sun Aug 11 2024/

.REST OF TONIGHT...West winds 5 to 15 knots veering northwest
late. Waves calm to 2 feet.
.MONDAY...West winds 5 to 15 knots backing southwest in the
afternoon. Waves calm to 2 feet.
.MONDAY NIGHT...West winds 5 to 15 knots. Waves calm to 2 feet.
.TUESDAY...West winds 5 to 15 knots backing southwest by mid
afternoon. Waves calm to 2 feet.
.TUESDAY NIGHT...Southwest winds 5 to 15 knots backing northeast
after midnight. Waves calm to 2 feet.
.WEDNESDAY...East winds 5 to 15 knots increasing to 10 to
20 knots by mid afternoon. Waves calm to 2 feet.
.WEDNESDAY NIGHT...East winds 10 to 20 knots. Waves calm to
2 feet.
.THURSDAY...East winds 10 to 20 knots. A chance of showers. Waves
calm to 2 feet.
.FRIDAY...Northeast winds 10 to 20 knots backing north. A chance
of showers. Waves calm to 2 feet.

$$

LSZ263-121000-
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-
1000 PM EDT Sun Aug 11 2024

.REST OF TONIGHT...West winds 5 to 15 knots veering northwest
late. Waves calm to 2 feet.
.MONDAY...West winds 5 to 15 knots diminishing to less than
10 knots in the afternoon, then becoming southwest 5 to 15 knots
late. Waves calm to 2 feet.
.MONDAY NIGHT...Southwest winds less than 10 knots. Waves calm to
2 feet.
.TUESDAY...West winds 5 to 15 knots backing southwest by mid
afternoon. Waves calm to 2 feet.
.TUESDAY NIGHT...Southwest winds 5 to 15 knots becoming south
less than 10 knots after midnight. Waves calm to 2 feet.
.WEDNESDAY...South winds 5 to 15 knots backing east by mid
afternoon. Waves calm to 2 feet.
.WEDNESDAY NIGHT...East winds 5 to 15 knots veering south after
midnight. Waves calm to 2 feet.
.THURSDAY...East winds 5 to 15 knots. A chance of showers. Waves
calm to 2 feet.
.FRIDAY...Northeast winds 5 to 15 knots backing north. Waves calm
to 2 feet.

$$

LSZ264-121000-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
1000 PM EDT Sun Aug 11 2024

.REST OF TONIGHT...Southwest winds 5 to 15 knots veering west
after midnight, then becoming northwest less than 10 knots late.
Waves calm to 2 feet.
.MONDAY...West winds less than 10 knots backing south late. Waves
calm to 2 feet.
.MONDAY NIGHT...South winds less than 10 knots veering southwest
late. Waves calm to 2 feet.
.TUESDAY...Southwest winds 5 to 15 knots. Waves calm to 2 feet.
.TUESDAY NIGHT...Southwest winds less than 10 knots backing south
after midnight. Waves calm to 2 feet.
.WEDNESDAY...South winds 5 to 15 knots backing southeast by mid
afternoon. Waves calm to 2 feet.
.WEDNESDAY NIGHT...Southeast winds 5 to 15 knots. Waves calm to
2 feet.
.THURSDAY...Southeast winds 5 to 15 knots. Waves calm to 2 feet.
.FRIDAY...East winds 5 to 15 knots backing north. Waves calm to
2 feet.

$$

LSZ265-121000-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
1000 PM EDT Sun Aug 11 2024

.REST OF TONIGHT...Southwest winds 5 to 15 knots veering west
late. Waves calm to 2 feet.
.MONDAY...West winds 5 to 15 knots veering northeast in the
afternoon, then veering east late. Waves calm to 2 feet.
.MONDAY NIGHT...Southeast winds less than 10 knots veering south
after midnight, then becoming southwest 5 to 15 knots late. Waves
calm to 2 feet.
.TUESDAY...Southwest winds 5 to 15 knots backing southeast by mid
afternoon. Waves calm to 2 feet.
.TUESDAY NIGHT...Southeast winds 5 to 15 knots veering south
after midnight. Waves calm to 2 feet.
.WEDNESDAY...Southeast winds 5 to 15 knots becoming east 10 to
20 knots by mid afternoon. Waves calm to 2 feet.
.WEDNESDAY NIGHT...Southeast winds 5 to 15 knots veering south
after midnight. Waves calm to 2 feet.
.THURSDAY...Southeast winds 5 to 15 knots increasing to 10 to
20 knots. A chance of showers. Waves calm to 2 feet.
.FRIDAY...East winds 10 to 20 knots becoming north 5 to 15 knots.
Waves calm to 2 feet.

$$

LSZ266-121000-
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-
1000 PM EDT Sun Aug 11 2024

.REST OF TONIGHT...West winds 5 to 15 knots veering northwest
late. Waves calm to 2 feet.
.MONDAY...North winds 5 to 15 knots veering east late. Waves calm
to 2 feet.
.MONDAY NIGHT...East winds less than 10 knots veering south after
midnight. Waves calm to 2 feet.
.TUESDAY...Southwest winds 5 to 15 knots backing south by mid
afternoon. Waves calm to 2 feet.
.TUESDAY NIGHT...South winds 5 to 15 knots. Waves calm to 2 feet.
.WEDNESDAY...Southeast winds 5 to 15 knots backing east by mid
afternoon. Waves calm to 2 feet.
.WEDNESDAY NIGHT...Southeast winds 5 to 15 knots veering south
after midnight. Waves calm to 2 feet.
.THURSDAY...Southeast winds 5 to 15 knots increasing to 10 to
20 knots. Waves calm to 2 feet.
.FRIDAY...East winds 10 to 20 knots becoming northeast 5 to
15 knots. Waves calm to 2 feet.

$$

LSZ267-121000-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
1000 PM EDT Sun Aug 11 2024

.REST OF TONIGHT...West winds 5 to 15 knots. Waves calm to 2
feet.
.MONDAY...North winds 5 to 15 knots veering northeast in the
afternoon, then backing north late. Waves calm to 2 feet.
.MONDAY NIGHT...North winds less than 10 knots. Waves calm to
2 feet.
.TUESDAY...West winds 5 to 15 knots veering north by mid
afternoon. Waves calm to 2 feet.
.TUESDAY NIGHT...Southeast winds 5 to 15 knots becoming south
less than 10 knots after midnight. Waves calm to 2 feet.
.WEDNESDAY...Southeast winds 5 to 15 knots backing east by mid
afternoon. Waves calm to 2 feet.
.WEDNESDAY NIGHT...Southeast winds 5 to 15 knots. Waves calm to
2 feet.
.THURSDAY...Southeast winds 10 to 20 knots. Waves calm to 2 feet.
.FRIDAY...East winds 10 to 20 knots. A chance of showers. Waves
calm to 2 feet.

$$
LSZ261-121000-
MAFOR 1203/
Superior West 11610 11710 11700 12600 13500. Waves 2 feet or
less.

Superior North Central 12600 13700 11300 12400. Waves 2 feet or
less.

Superior South Central 11500 12600 12700 11100 11200 11300. Waves
1 foot or less.

Superior East 12600 11700 11800 12100 11800 11700. Waves 2 feet
or less.

$$

Jablonski

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

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