038
FZUS63 KMQT 111955
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
355 PM EDT Thu Jul 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...30.1 inch ridging over Lake Superior this evening will
anchor over the region into Friday. On Friday afternoon a 29.8 inch
trough sweeps east, extending from northern Ontario to northwest
Minnesota by Friday afternoon. 29.9 inch troughing settles over
northern Lake Superior Saturday evening before a 29.8 inch low
pressure shifts tracks east across Minnesota towards the Upper
Great Lakes for Sunday. A deepening low spinning southward from
the Canadian Prairies enables troughing at 29.6 inches across Lake
Superior Monday evening. Weak ridging returns to the Upper Great
Lakes at 29.9 inches Tuesday.

LSZ162-120400-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
355 PM EDT Thu Jul 11 2024 /255 PM CDT Thu Jul 11 2024/

.LATE THIS AFTERNOON...Southeast winds 5 to 15 knots. Waves calm
to 2 feet.
.TONIGHT...Northeast winds 5 to 15 knots veering southwest late.
Waves calm to 2 feet.
.FRIDAY...Southwest winds 5 to 15 knots backing south late. 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 becoming south 10 to
20 knots by mid afternoon. A slight chance of showers and
thunderstorms. Waves calm to 2 feet.
.SATURDAY NIGHT...Southwest winds 10 to 20 knots becoming west
5 to 15 knots after midnight. A chance of showers and
thunderstorms. Waves calm to 2 feet.
.SUNDAY...West winds 5 to 15 knots backing southwest by mid
afternoon. A chance of showers and thunderstorms. Waves calm to
2 feet.
.SUNDAY NIGHT...West winds 5 to 15 knots veering north after
midnight. Waves calm to 2 feet.
.MONDAY...West winds 5 to 15 knots increasing to 10 to 20 knots.
A chance of showers and thunderstorms. Waves calm to 2 feet.
.TUESDAY...West winds 10 to 20 knots veering north. Waves calm to
2 feet.

$$

LSZ263-120400-
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-
355 PM EDT Thu Jul 11 2024

.LATE THIS AFTERNOON...South winds 5 to 15 knots. Waves calm to
2 feet.
.TONIGHT...Southeast winds 5 to 15 knots veering south after
midnight, then becoming southwest less than 10 knots late. 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 10 to 20 knots backing south by mid
afternoon. A slight chance of showers and thunderstorms by mid
afternoon. Waves calm to 2 feet.
.SATURDAY NIGHT...South winds 5 to 15 knots veering southwest
after midnight. A chance of showers and thunderstorms. Waves calm
to 2 feet.
.SUNDAY...West winds 5 to 15 knots backing southwest by mid
afternoon. Waves calm to 2 feet.
.SUNDAY NIGHT...West winds 5 to 15 knots becoming south less than
10 knots after midnight. Waves calm to 2 feet.
.MONDAY...Southeast winds 5 to 15 knots veering west. A chance of
showers and thunderstorms. Waves calm to 2 feet.
.TUESDAY...West winds 10 to 20 knots becoming north 5 to
15 knots. Waves building to 1 to 3 feet, then subsiding to calm
to 2 feet.

$$

LSZ264-120400-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
355 PM EDT Thu Jul 11 2024

.LATE THIS AFTERNOON...South winds 5 to 15 knots. Waves calm to
2 feet.
.TONIGHT...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 veering southwest after
midnight. Waves calm to 2 feet.
.SATURDAY...Southwest winds 5 to 15 knots backing south by mid
afternoon. Waves calm to 2 feet.
.SATURDAY NIGHT...South winds 5 to 15 knots veering southwest
after midnight. A chance of showers and thunderstorms. Waves calm
to 2 feet.
.SUNDAY...West winds 5 to 15 knots. Waves calm to 2 feet.
.SUNDAY NIGHT...West winds 5 to 15 knots diminishing to less than
10 knots after midnight. Waves calm to 2 feet.
.MONDAY...Southeast winds 5 to 15 knots veering west. A chance of
showers and thunderstorms. Waves calm to 2 feet.
.TUESDAY...West winds 10 to 20 knots becoming northwest 5 to
15 knots. Waves building to 1 to 3 feet, then subsiding to calm
to 2 feet.

$$

LSZ265-120400-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
355 PM EDT Thu Jul 11 2024

.LATE THIS AFTERNOON...Southeast winds 5 to 15 knots. Waves calm
to 2 feet.
.TONIGHT...Southeast winds 5 to 15 knots veering south late.
Waves calm to 2 feet.
.FRIDAY...Southwest winds 5 to 15 knots backing southeast in the
afternoon. Waves calm to 2 feet.
.FRIDAY NIGHT...South winds 5 to 15 knots veering southwest after
midnight, then increasing to 10 to 20 knots late. Waves calm to
2 feet.
.SATURDAY...Southwest winds 5 to 15 knots becoming southeast
10 to 20 knots by mid afternoon. Waves calm to 2 feet.
.SATURDAY NIGHT...South winds 10 to 20 knots becoming southwest
5 to 15 knots after midnight. A chance of showers and
thunderstorms. Waves calm to 2 feet.
.SUNDAY...West winds 5 to 15 knots increasing to 10 to 20 knots
by mid afternoon. Waves calm to 2 feet.
.SUNDAY NIGHT...West winds 5 to 15 knots backing southwest after
midnight. Waves calm to 2 feet.
.MONDAY...Southeast winds 5 to 15 knots becoming west 10 to
20 knots. A chance of showers and thunderstorms. Waves calm to
2 feet.
.TUESDAY...Northwest winds 10 to 20 knots. Waves calm to 2 feet.

$$

LSZ266-120400-
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-
355 PM EDT Thu Jul 11 2024

.LATE THIS AFTERNOON...South winds 5 to 15 knots. Waves calm to
2 feet.
.TONIGHT...South winds 5 to 15 knots. Waves calm to 2 feet.
.FRIDAY...South winds 5 to 15 knots backing southeast late. Waves
calm to 2 feet.
.FRIDAY NIGHT...South winds 5 to 15 knots increasing to 10 to
20 knots after midnight, then veering southwest late. Waves calm
to 2 feet.
.SATURDAY...Southwest winds 5 to 15 knots becoming south 10 to
20 knots by mid afternoon. Waves calm to 2 feet.
.SATURDAY NIGHT...South winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. A chance of showers and thunderstorms.
Waves calm to 2 feet.
.SUNDAY...Southwest winds 5 to 15 knots veering west by mid
afternoon. A chance of showers. Waves calm to 2 feet.
.SUNDAY NIGHT...West winds 5 to 15 knots. Waves calm to 2 feet.
.MONDAY...Southeast winds 5 to 15 knots becoming west 10 to
20 knots. A chance of showers and thunderstorms. Waves calm to
2 feet.
.TUESDAY...Northwest winds 10 to 20 knots. Waves building to 1 to
3 feet.

$$

LSZ267-120400-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
355 PM EDT Thu Jul 11 2024

.LATE THIS AFTERNOON...Northwest winds 5 to 15 knots. Waves calm
to 2 feet.
.TONIGHT...Northwest winds 5 to 15 knots backing south after
midnight. Waves calm to 2 feet.
.FRIDAY...South winds 5 to 15 knots backing southeast in the
afternoon. Waves calm to 2 feet.
.FRIDAY NIGHT...South winds 5 to 15 knots increasing to 10 to
20 knots after midnight, then veering southwest late. Waves calm
to 2 feet.
.SATURDAY...South winds 5 to 15 knots becoming southeast 10 to
20 knots by mid afternoon. Waves calm to 2 feet.
.SATURDAY NIGHT...South winds 10 to 20 knots. A chance of showers
and thunderstorms. Waves calm to 2 feet.
.SUNDAY...South winds 10 to 20 knots veering west by mid
afternoon. A chance of showers and thunderstorms. Waves calm to
2 feet.
.SUNDAY NIGHT...West winds 5 to 15 knots. Waves calm to 2 feet.
.MONDAY...East winds 5 to 15 knots becoming west 10 to 20 knots.
A chance of showers and thunderstorms. Waves calm to 2 feet.
.TUESDAY...West winds 10 to 20 knots veering northwest. Waves
building to 1 to 3 feet.

$$

LSZ261-120400-
MAFOR 1121/
Superior West 12300 11200 11300 11400 13500. Waves 1 foot or
less.

Superior North Central 14400 11400 12500 11510. Waves 1 foot or
less.

Superior South Central 13300 13400 12300. Waves 1 foot or less.

Superior East 11700 11600 12400 11300 13400. Waves 1 foot or
less.

$$

JSS

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

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