346
FZUS63 KMQT 250154
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
954 PM EDT Tue Sep 24 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 29.7 inch low pressure continues tracking northeast
through Lower Michigan this evening before lifting into northern
Ontario Wednesday. A 30.0 inch high pressure builds over the
Mid-Mississippi Valley Wednesday before building to 30.1 inches
over the western Great Lakes by Thursday. High pressure ridging
continues over the Great Lakes at 30.0 inches Friday into Saturday
despite the remnants of a 29.6 inch tropical system over the
Southeast and a 29.7 inch low over Hudson Bay. High pressure
ridging builds over the Upper Great Lakes to 30.1 inches Sunday as
a 30.2 inch high pressure moves into northern Ontario from the
west.

LSZ162-251000-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
954 PM EDT Tue Sep 24 2024 /854 PM CDT Tue Sep 24 2024/

.REST OF TONIGHT...East winds 5 to 15 knots backing north after
midnight, then backing west late. Waves calm to 2 feet.
.WEDNESDAY...West winds 5 to 15 knots backing southwest in the
afternoon. Waves calm to 2 feet.
.WEDNESDAY NIGHT...West winds 5 to 15 knots veering north after
midnight. Waves calm to 2 feet.
.THURSDAY...South winds 5 to 15 knots backing east by mid
afternoon. Waves calm to 2 feet.
.THURSDAY NIGHT...East winds 5 to 15 knots veering southwest
after midnight. Waves calm to 2 feet.
.FRIDAY...Southwest winds 5 to 15 knots. Waves calm to 2 feet.
.FRIDAY NIGHT...South winds 5 to 15 knots veering west after
midnight. Waves calm to 2 feet.
.SATURDAY...West winds 5 to 15 knots becoming north 10 to
20 knots. Waves calm to 2 feet.
.SUNDAY...Northeast winds 10 to 20 knots veering east. Waves calm
to 2 feet.

$$

LSZ263-251000-
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-
954 PM EDT Tue Sep 24 2024

.REST OF TONIGHT...Southeast winds 5 to 15 knots becoming south
less than 10 knots after midnight, then becoming northwest 5 to
15 knots late. Waves calm to 2 feet.
.WEDNESDAY...West winds 5 to 15 knots backing southwest late.
Waves calm to 2 feet.
.WEDNESDAY NIGHT...Southwest winds 5 to 15 knots veering north
after midnight. Waves calm to 2 feet.
.THURSDAY...Southwest winds 5 to 15 knots backing south by mid
afternoon. Waves calm to 2 feet.
.THURSDAY NIGHT...Southeast winds 5 to 15 knots veering southwest
after midnight. Waves calm to 2 feet.
.FRIDAY...Southwest winds 5 to 15 knots. Waves calm to 2 feet.
.FRIDAY NIGHT...South winds 5 to 15 knots veering southwest after
midnight. Waves calm to 2 feet.
.SATURDAY...Southwest winds 5 to 15 knots backing northeast.
Waves calm to 2 feet.
.SUNDAY...Northeast winds 10 to 20 knots becoming east 5 to
15 knots. Waves calm to 2 feet.

$$

LSZ264-251000-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
954 PM EDT Tue Sep 24 2024

.REST OF TONIGHT...Southeast winds 5 to 15 knots becoming south
less than 10 knots after midnight, then veering northwest late.
Waves calm to 2 feet.
.WEDNESDAY...Northwest winds 5 to 15 knots backing west in the
afternoon. Waves calm to 2 feet.
.WEDNESDAY NIGHT...West winds 5 to 15 knots veering northwest
after midnight, then becoming north less than 10 knots late.
Waves calm to 2 feet.
.THURSDAY...Southwest winds 5 to 15 knots backing south by mid
afternoon. Waves calm to 2 feet.
.THURSDAY NIGHT...South winds 5 to 15 knots. Waves calm to
2 feet.
.FRIDAY...Southwest winds 5 to 15 knots. Waves calm to 2 feet.
.FRIDAY NIGHT...South winds 5 to 15 knots. Waves calm to 2 feet.
.SATURDAY...Southwest winds 5 to 15 knots veering north. Waves
calm to 2 feet.
.SUNDAY...Northeast winds 10 to 20 knots becoming east 5 to
15 knots. Waves calm to 2 feet.

$$

LSZ265-251000-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
954 PM EDT Tue Sep 24 2024

.REST OF TONIGHT...Southeast winds 5 to 15 knots veering south
after midnight, then veering northwest late. Waves calm to
2 feet.
.WEDNESDAY...West winds 10 to 20 knots. Waves calm to 2 feet.
.WEDNESDAY NIGHT...West winds 5 to 15 knots. Waves calm to
2 feet.
.THURSDAY...Southwest winds 5 to 15 knots backing southeast by
mid afternoon. Waves calm to 2 feet.
.THURSDAY NIGHT...Southeast winds 5 to 15 knots veering southwest
after midnight. Waves calm to 2 feet.
.FRIDAY...Southwest winds 5 to 15 knots becoming southeast 10 to
20 knots by mid afternoon. Waves calm to 2 feet.
.FRIDAY NIGHT...Southeast winds 5 to 15 knots veering south after
midnight. Waves calm to 2 feet.
.SATURDAY...East winds 5 to 15 knots backing north. Waves calm to
2 feet.
.SUNDAY...Northeast winds 10 to 20 knots veering east. Waves calm
to 2 feet.

$$

LSZ266-251000-
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-
954 PM EDT Tue Sep 24 2024

.REST OF TONIGHT...East winds 5 to 15 knots backing north late.
Waves calm to 2 feet.
.WEDNESDAY...Northwest 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.
.WEDNESDAY NIGHT...West winds 5 to 15 knots veering northwest
late. Waves calm to 2 feet.
.THURSDAY...Southwest winds 5 to 15 knots backing south by mid
afternoon. Waves calm to 2 feet.
.THURSDAY NIGHT...Southeast winds 5 to 15 knots veering south
after midnight. Waves calm to 2 feet.
.FRIDAY...South winds 5 to 15 knots. Waves calm to 2 feet.
.FRIDAY NIGHT...Southeast winds 5 to 15 knots veering south after
midnight. Waves calm to 2 feet.
.SATURDAY...South winds 5 to 15 knots backing northeast. Waves
calm to 2 feet.
.SUNDAY...Northeast winds 10 to 20 knots veering east. Waves calm
to 2 feet.

$$

LSZ267-251000-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
954 PM EDT Tue Sep 24 2024

.REST OF TONIGHT...Northeast winds 10 to 20 knots diminishing to
5 to 15 knots after midnight, then becoming north 10 to 20 knots
late. A chance of showers. Waves calm to 2 feet.
.WEDNESDAY...North winds 10 to 20 knots backing northwest in the
afternoon. Waves building to 1 to 3 feet.
.WEDNESDAY NIGHT...Northwest winds 10 to 20 knots diminishing to
5 to 15 knots late. Waves subsiding to calm to 2 feet.
.THURSDAY...Southwest winds 5 to 15 knots veering north by mid
afternoon. Waves calm to 2 feet.
.THURSDAY NIGHT...Southeast winds 5 to 15 knots veering south
after midnight. Waves calm to 2 feet.
.FRIDAY...South winds 5 to 15 knots backing east by mid
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 10 to 20 knots backing northeast.
Waves calm to 2 feet.
.SUNDAY...North winds 10 to 20 knots veering east. Waves calm to
2 feet.

$$
LSZ261-251000-
MAFOR 2503/
Superior West 11100 12700 12610 13510. Waves 2 feet or less.

Superior North Central 11400 11500 12700 11610 12620 11610. Waves
2 feet or less.

Superior South Central 11300 12700 14710 11600. Waves 1 to 2
feet.

Superior East 11200 11100 11800 14710 11710. Waves 2 feet or less
overnight and Wednesday. Waves 1 to 3 feet Wednesday evening.

$$

TAP

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

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