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FZUS63 KMQT 241353
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
953 AM 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...Today, a 29.8 inch low pressure will track northeast
to lower Michigan while a weakening 29.8 inch trough lifts from
northern Minnesota into Ontario. 30.0 inch high pressure builds
over the Lower MS Valley Wednesday, building to 30.1 inches
Thursday. High pressure continues over the Great Lakes at 30.0
inches Friday into Saturday despite the remnants of a 29.7 inch
tropical system over the Southeast and a 29.6 inch low over Hudson
Bay.

LSZ162-242200-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
953 AM EDT Tue Sep 24 2024 /853 AM CDT Tue Sep 24 2024/

.REST OF TODAY...South winds 5 to 15 knots backing east in the
afternoon. Waves calm to 2 feet.
.TONIGHT...East winds 5 to 15 knots backing northwest after
midnight, then backing west late. Waves calm to 2 feet.
.WEDNESDAY...West winds 5 to 15 knots becoming southwest 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. Waves calm to
2 feet.
.THURSDAY...Southwest 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 backing northeast. Waves
calm to 2 feet.
.SATURDAY...Northeast winds 5 to 15 knots. Waves calm to 2 feet.

$$

LSZ263-242200-
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-
953 AM EDT Tue Sep 24 2024

.REST OF TODAY...South winds 5 to 15 knots backing southeast in
the afternoon, then backing northeast late. Waves calm to 2 feet.
.TONIGHT...East winds 5 to 15 knots becoming west less than
10 knots after midnight. Waves calm to 2 feet.
.WEDNESDAY...West winds 5 to 15 knots becoming southwest 10 to
20 knots late. Waves calm to 2 feet.
.WEDNESDAY NIGHT...Southwest winds 5 to 15 knots diminishing to
less than 10 knots 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 south
after midnight. Waves calm to 2 feet.
.FRIDAY...Southwest winds 5 to 15 knots backing southeast. Waves
calm to 2 feet.
.SATURDAY...Northeast winds 5 to 15 knots veering east. Waves
calm to 2 feet.

$$

LSZ264-242200-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
953 AM EDT Tue Sep 24 2024

.REST OF TODAY...Southeast winds 5 to 15 knots. Waves calm to
2 feet.
.TONIGHT...Southeast winds 5 to 15 knots becoming south less than
10 knots after midnight, then veering west late. Waves calm to
2 feet.
.WEDNESDAY...West winds 5 to 15 knots. Waves calm to 2 feet.
.WEDNESDAY NIGHT...West winds 5 to 15 knots diminishing to less
than 10 knots after midnight. Waves calm to 2 feet.
.THURSDAY...South winds 5 to 15 knots. Waves calm to 2 feet.
.THURSDAY NIGHT...Southeast winds 5 to 15 knots veering south
after midnight. Waves calm to 2 feet.
.FRIDAY...Southwest winds 5 to 15 knots backing southeast. Waves
calm to 2 feet.
.SATURDAY...South winds 5 to 15 knots backing east. Waves calm to
2 feet.

$$

LSZ265-242200-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
953 AM EDT Tue Sep 24 2024

.REST OF TODAY...Southeast winds 5 to 15 knots increasing to
10 to 20 knots in the afternoon, then backing east late. Waves
calm to 2 feet.
.TONIGHT...East winds 5 to 15 knots veering southwest after
midnight, then veering west late. Waves calm to 2 feet.
.WEDNESDAY...West winds 10 to 20 knots diminishing to 5 to
15 knots late. Waves calm to 2 feet.
.WEDNESDAY NIGHT...West winds 5 to 15 knots. Waves calm to
2 feet.
.THURSDAY...West winds 5 to 15 knots backing southeast 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...East winds 5 to 15 knots veering southeast. Waves calm
to 2 feet.
.SATURDAY...East winds 5 to 15 knots. Waves calm to 2 feet.

$$

LSZ266-242200-
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-
953 AM EDT Tue Sep 24 2024

.REST OF TODAY...Southeast winds 5 to 15 knots becoming east
10 to 20 knots late. Waves calm to 2 feet.
.TONIGHT...East winds 5 to 15 knots backing northwest late. Waves
calm to 2 feet.
.WEDNESDAY...Northwest winds 10 to 20 knots becoming west 5 to
15 knots late. Waves calm to 2 feet.
.WEDNESDAY NIGHT...West winds 5 to 15 knots. Waves calm to
2 feet.
.THURSDAY...West winds 5 to 15 knots backing southeast 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 southeast. Waves calm
to 2 feet.
.SATURDAY...Southeast winds 5 to 15 knots backing east. Waves
calm to 2 feet.

$$

LSZ267-242200-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
953 AM EDT Tue Sep 24 2024

.REST OF TODAY...Southeast winds 10 to 20 knots becoming east
5 to 15 knots in the afternoon, then increasing to 10 to 20 knots
late. A slight chance of showers by mid afternoon. Waves calm to
2 feet.
.TONIGHT...East winds 5 to 15 knots backing northeast after
midnight, then backing northwest late. A slight chance of
showers. Waves calm to 2 feet.
.WEDNESDAY...Northwest winds 10 to 20 knots backing west late.
Waves calm to 2 feet.
.WEDNESDAY NIGHT...West winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. Waves calm to 2 feet.
.THURSDAY...West 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...Southeast winds 5 to 15 knots increasing to 10 to
20 knots. Waves calm to 2 feet.
.SATURDAY...East winds 10 to 20 knots. Waves calm to 2 feet.

$$
LSZ261-242200-
MAFOR 2415/
Superior West 11400 13200 11100 11700 11600 11610. Waves 2 feet
or less.

Superior North Central 13310 11300 11400 12600 11610. Waves 1 to
2 feet.

Superior South Central 11310 12210 11200 11300 11600 12700. Waves
around 1 foot.

Superior East 11310 11200 11210 12200 11800 12700. Waves 2 feet
or less.

$$

GS

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

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