155
FZUS63 KMQT 160200
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
1000 PM EDT Sun Sep 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 30.3 inch high pressure remains anchored offshore
of the New England Coast tonight through Wednesday, extending
30.1 inch ridging back into the Great Lakes region. Meanwhile, a
29.9 inch low pressure trough currently across south central
Canada will drift into northern Ontario on Monday before
dissipating. Then, a 29.4 inch trough emerges over the western
Great Plains on Tuesday. Low pressure of 29.3 inches develops
along this trough over the northwestern Plains Tuesday night into
Wednesday, then meanders northward into Saskatchewan through
Wednesday night. On Thursday, the low lifts north into northern
Manitoba while 30.1 inch ridging extends from northern Quebec into
the Great Lakes region. On Friday, the low lifts northeast toward
Hudson bay while the high shifts east over northern Quebec, still
extending 30.1 inch ridging over the Great Lakes.

LSZ162-161000-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
1000 PM EDT Sun Sep 15 2024 /900 PM CDT Sun Sep 15 2024/

.REST OF TONIGHT...Northeast winds 5 to 15 knots veering
southwest late. Patchy fog. A slight chance of showers and
thunderstorms after midnight. Waves calm to 2 feet.
.MONDAY...South winds 5 to 15 knots backing east late. A chance
of showers and thunderstorms. Waves calm to 2 feet.
.MONDAY NIGHT...East winds 5 to 15 knots backing northeast after
midnight, then veering south late. A slight chance of showers and
thunderstorms. Waves calm to 2 feet.
.TUESDAY...South winds 5 to 15 knots backing east 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 backing east by mid
afternoon. Waves calm to 2 feet.
.WEDNESDAY NIGHT...East winds 5 to 15 knots. Waves calm to 2
feet.
.THURSDAY...East winds 5 to 15 knots veering south. A chance of
showers. Waves calm to 2 feet.
.FRIDAY...South winds 5 to 15 knots backing east. A chance of
showers. Waves calm to 2 feet.

$$

LSZ263-161000-
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 Sep 15 2024

.REST OF TONIGHT...South winds 5 to 15 knots veering southwest
late. A slight chance of showers and thunderstorms after
midnight. Waves calm to 2 feet.
.MONDAY...Southwest winds 5 to 15 knots. A slight chance of
showers and thunderstorms. Waves calm to 2 feet.
.MONDAY NIGHT...Southeast winds 5 to 15 knots veering south after
midnight. A slight chance of showers and thunderstorms. Waves
calm to 2 feet.
.TUESDAY...South winds 5 to 15 knots backing southeast by mid
afternoon. Waves calm to 2 feet.
.TUESDAY NIGHT...South winds 5 to 15 knots. Waves calm to 2 feet.
.WEDNESDAY...South 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 veering south. Waves
calm to 2 feet.
.FRIDAY...South winds 5 to 15 knots. A chance of showers. Waves
calm to 2 feet.

$$

LSZ264-161000-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
1000 PM EDT Sun Sep 15 2024

.REST OF TONIGHT...South winds 5 to 15 knots veering southwest
late. A slight chance of showers and thunderstorms after
midnight. Waves calm to 2 feet building to 1 to 3 feet, then
subsiding to calm to 2 feet.
.MONDAY...Southwest winds 5 to 15 knots. A slight chance of
showers and thunderstorms. Waves calm to 2 feet.
.MONDAY NIGHT...Southeast winds 5 to 15 knots veering southwest
late. A slight chance of showers and thunderstorms. Waves calm to
2 feet.
.TUESDAY...South winds 5 to 15 knots backing southeast by mid
afternoon. Waves calm to 2 feet.
.TUESDAY NIGHT...South winds 5 to 15 knots. 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 veering south
after midnight. Waves calm to 2 feet.
.THURSDAY...Southeast winds 5 to 15 knots veering south. Waves
calm to 2 feet.
.FRIDAY...South winds 5 to 15 knots. A chance of showers. Waves
calm to 2 feet.

$$

LSZ265-161000-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
1000 PM EDT Sun Sep 15 2024

.REST OF TONIGHT...South winds 10 to 20 knots veering southwest
late. Waves 1 to 3 feet subsiding to calm to 2 feet.
.MONDAY...Southwest winds 5 to 15 knots backing southeast late. A
slight chance of showers. A slight chance of thunderstorms by mid
afternoon. Waves calm to 2 feet.
.MONDAY NIGHT...Southeast winds 5 to 15 knots veering south after
midnight. A slight chance of showers and thunderstorms through
midnight. Waves calm to 2 feet.
.TUESDAY...South winds 5 to 15 knots becoming southeast 10 to
20 knots by mid afternoon. Waves calm to 2 feet.
.TUESDAY NIGHT...South winds 5 to 15 knots. 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 veering south
after midnight. Waves calm to 2 feet.
.THURSDAY...Southeast winds 5 to 15 knots veering south. Waves
calm to 2 feet.
.FRIDAY...Southeast winds 5 to 15 knots veering south. A chance
of showers. Waves calm to 2 feet.

$$

LSZ266-161000-
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 Sep 15 2024

.REST OF TONIGHT...South winds 15 to 25 knots diminishing to
10 to 20 knots after midnight. Waves 1 to 3 feet building to 2 to
4 feet, then subsiding to 1 to 3 feet.
.MONDAY...South winds 10 to 20 knots diminishing to 5 to 15 knots
by the afternoon, then backing southeast late. A slight chance of
showers. A slight chance of thunderstorms by mid afternoon. Waves
subsiding to calm to 2 feet.
.MONDAY NIGHT...South winds 5 to 15 knots. A slight chance of
showers and thunderstorms. Waves calm to 2 feet.
.TUESDAY...South winds 10 to 20 knots. Waves calm to 2 feet.
.TUESDAY NIGHT...South winds 10 to 20 knots diminishing to 5 to
15 knots 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 veering south
after midnight. Waves calm to 2 feet.
.THURSDAY...Southeast winds 5 to 15 knots veering south. Waves
calm to 2 feet.
.FRIDAY...Southeast winds 5 to 15 knots veering south. Waves calm
to 2 feet.

$$

LSZ267-161000-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
1000 PM EDT Sun Sep 15 2024

.REST OF TONIGHT...South winds 10 to 20 knots. Waves calm to
2 feet building to 1 to 3 feet.
.MONDAY...South winds 5 to 15 knots backing southeast late. Waves
subsiding to calm to 2 feet.
.MONDAY NIGHT...South winds 5 to 15 knots. A slight chance of
showers. Waves calm to 2 feet.
.TUESDAY...South winds 5 to 15 knots backing southeast 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. Waves calm to
2 feet.
.THURSDAY...East winds 5 to 15 knots veering southeast. Waves
calm to 2 feet.
.FRIDAY...Southeast winds 5 to 15 knots. Waves calm to 2 feet.

$$
LSZ261-161000-
MAFOR 1603/
Superior West 14510 11400 11410 12200. A chance of showers and
thunderstorms Monday morning. Waves 1 foot or less.

Superior North Central 11410 14510 11510 11400 11300. Waves 1 to
3 feet overnight and Monday. Waves 2 feet or less Monday evening.

Superior South Central 11420 14410 13300. Waves 1 to 3 feet
overnight. Waves 2 feet or less Monday and Monday evening.

Superior East 12420 13410 11400 12300. Waves 1 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