934
FZUS63 KMQT 240748
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
348 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 Friday into
Saturday.


LSZ162-241600-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
348 AM EDT Tue Sep 24 2024 /248 AM CDT Tue Sep 24 2024/

.EARLY THIS MORNING...South winds 5 to 15 knots. Waves 1 to
3 feet.
.TODAY...South winds 5 to 15 knots backing east late. Waves
subsiding to calm to 2 feet.
.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 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.

$$

LSZ263-241600-
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-
348 AM EDT Tue Sep 24 2024

.EARLY THIS MORNING...South winds 5 to 15 knots. Waves 2 to
4 feet subsiding to 1 to 3 feet.
.TODAY...South winds 5 to 15 knots backing southeast in the
afternoon, then backing northeast late. Waves subsiding to calm
to 2 feet.
.TONIGHT...East winds 5 to 15 knots becoming south less than
10 knots after midnight, then becoming west 5 to 15 knots late.
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.

$$

LSZ264-241600-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
348 AM EDT Tue Sep 24 2024

.EARLY THIS MORNING...South winds 5 to 15 knots. Waves 1 to
3 feet.
.TODAY...South winds 5 to 15 knots backing southeast in the
afternoon. Waves subsiding to calm to 2 feet.
.TONIGHT...Southeast winds 5 to 15 knots becoming south less than
10 knots after midnight, then becoming west 5 to 15 knots 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.

$$

LSZ265-241600-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
348 AM EDT Tue Sep 24 2024

.EARLY THIS MORNING...South winds 5 to 15 knots. Waves calm to
2 feet.
.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 west after midnight,
then veering northwest 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.

$$

LSZ266-241600-
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-
348 AM EDT Tue Sep 24 2024

.EARLY THIS MORNING...Southeast winds 5 to 15 knots. Waves calm
to 2 feet.
.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 north 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.

$$

LSZ267-241600-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
348 AM EDT Tue Sep 24 2024

.EARLY THIS MORNING...Southeast winds 10 to 20 knots. Waves calm
to 2 feet.
.TODAY...Southeast winds 10 to 20 knots becoming east 5 to
15 knots in the afternoon. 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 becoming north 10 to 20 knots 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.

$$

LSZ261-241600-
MAFOR 2409/
Superior West 12410 11400 11200 11210 12200 11700. Waves 1 to 3
feet subsiding to 1 foot or less today through tonight.

Superior North Central 12410 14310 11300 11500. Waves 1 to 3
feet.

Superior South Central 13300 13210 11300 11600. Waves 1 to 2
feet.

Superior East 13310 14200 11800. Waves 2 feet or less.

$$

WFO MQT

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

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