474
FZUS63 KMQT 130748
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
348 AM EDT Sat Jul 13 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...Lake Superior will be located between high pressure
averaging 30.1 inches over the Appalachians and low pressure
averaging 29.7 inches over the northern Plains this weekend. This
pattern will favor warm southwesterly flow and the potential for
episodes of showers and thunderstorms. A trough of 29.7 inches
sweeps across Lake Superior through Monday, with a 30.1 inch high
gradually building in through the middle of next week.


LSZ162-131600-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
348 AM EDT Sat Jul 13 2024 /248 AM CDT Sat Jul 13 2024/

.EARLY THIS MORNING...Southwest winds 5 to 15 knots. Waves calm
to 2 feet.
.TODAY...South winds 5 to 15 knots. A chance of showers and
thunderstorms. Waves calm to 2 feet.
.TONIGHT...Southwest winds 5 to 15 knots increasing to 10 to
20 knots after midnight, then veering west late. Showers likely
through midnight. A chance of thunderstorms. A slight chance of
showers after midnight. Waves calm to 2 feet.
.SUNDAY...Southwest winds 5 to 15 knots. 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
by mid afternoon. A chance of showers through early afternoon. A
chance of thunderstorms. Showers likely by mid afternoon. Waves
calm to 2 feet.
.MONDAY NIGHT...West winds 10 to 20 knots veering northwest after
midnight. Waves building to 1 to 3 feet.
.TUESDAY...West winds 15 to 25 knots becoming northwest 10 to
20 knots. Waves subsiding to calm to 2 feet, then building to
1 to 3 feet.
.WEDNESDAY...Northwest winds 10 to 20 knots diminishing to 5 to
15 knots. Waves calm to 2 feet.

$$

LSZ263-131600-
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 Sat Jul 13 2024

.EARLY THIS MORNING...Southwest winds 5 to 15 knots. Waves calm
to 2 feet.
.TODAY...Southwest winds 5 to 15 knots backing south in the
afternoon. A slight chance of showers and thunderstorms by mid
afternoon. Waves calm to 2 feet.
.TONIGHT...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 in the
afternoon. Waves calm to 2 feet.
.SUNDAY NIGHT...West winds 5 to 15 knots becoming southwest less
than 10 knots after midnight. Waves calm to 2 feet.
.MONDAY...South winds 5 to 15 knots veering west by mid
afternoon. A chance of showers. A chance of thunderstorms by mid
afternoon. Waves calm to 2 feet.
.MONDAY NIGHT...West winds 5 to 15 knots increasing to 10 to
20 knots after midnight. Waves building to 1 to 3 feet.
.TUESDAY...West winds 10 to 20 knots becoming northwest 5 to
15 knots. Waves subsiding to calm to 2 feet.
.WEDNESDAY...Northwest winds 5 to 15 knots backing west. Waves
calm to 2 feet.

$$

LSZ264-131600-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
348 AM EDT Sat Jul 13 2024

.EARLY THIS MORNING...Southwest winds 5 to 15 knots. Waves calm
to 2 feet.
.TODAY...Southwest winds 5 to 15 knots backing southeast late. A
slight chance of showers and thunderstorms by mid afternoon.
Waves calm to 2 feet.
.TONIGHT...South winds 5 to 15 knots veering southwest after
midnight. A chance of showers and thunderstorms. Waves building
to 1 to 3 feet, then subsiding to calm to 2 feet.
.SUNDAY...West winds 5 to 15 knots backing southwest in the
afternoon. Waves calm to 2 feet.
.SUNDAY NIGHT...West winds 5 to 15 knots becoming southwest less
than 10 knots after midnight. Waves calm to 2 feet.
.MONDAY...South winds 5 to 15 knots backing southeast by mid
afternoon. A chance of showers by mid afternoon. Waves calm to
2 feet.
.MONDAY NIGHT...West winds 5 to 15 knots becoming northwest 10 to
20 knots after midnight. A chance of showers and thunderstorms
through midnight. Waves building to 1 to 3 feet.
.TUESDAY...West winds 10 to 20 knots becoming northwest 5 to
15 knots. Waves building to 2 to 4 feet, then subsiding to 1 to
3 feet.
.WEDNESDAY...Northwest winds 5 to 15 knots backing west. Waves
subsiding to calm to 2 feet.

$$

LSZ265-131600-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
348 AM EDT Sat Jul 13 2024

.EARLY THIS MORNING...Southwest winds 5 to 15 knots. Waves calm
to 2 feet.
.TODAY...Southwest winds 5 to 15 knots becoming southeast 10 to
20 knots in the afternoon. Waves calm to 2 feet.
.TONIGHT...South winds 5 to 15 knots increasing to 10 to 20 knots
after midnight, then becoming southwest 5 to 15 knots late. A
chance of showers and thunderstorms. Waves building to 1 to
3 feet, then subsiding to calm to 2 feet.
.SUNDAY...West winds 10 to 20 knots. A slight chance of showers
and thunderstorms. 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 increasing to 10 to
20 knots by mid afternoon. A chance of showers and thunderstorms
by mid afternoon. Waves calm to 2 feet.
.MONDAY NIGHT...West winds 10 to 20 knots. A chance of showers
and thunderstorms through midnight. Waves calm to 2 feet.
.TUESDAY...West winds 15 to 25 knots becoming northwest 10 to
20 knots. Waves calm to 2 feet.
.WEDNESDAY...Northwest winds 10 to 20 knots backing west. Waves
calm to 2 feet.

$$

LSZ266-131600-
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 Sat Jul 13 2024

.EARLY THIS MORNING...Southwest winds 10 to 20 knots. Waves calm
to 2 feet.
.TODAY...Southwest winds 5 to 15 knots backing south in the
afternoon, then becoming southeast 10 to 20 knots late. Waves
calm to 2 feet.
.TONIGHT...South winds 10 to 20 knots veering southwest late. A
chance of showers and thunderstorms. Waves building to 2 to
4 feet, then subsiding to calm to 2 feet.
.SUNDAY...Southwest winds 10 to 20 knots veering west in the
afternoon. A chance of showers and a slight chance of
thunderstorms. 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 increasing to 10 to
20 knots by mid afternoon. A chance of showers by mid afternoon.
Waves calm to 2 feet.
.MONDAY NIGHT...Southwest winds 10 to 20 knots becoming west
15 to 25 knots after midnight. A chance of showers and
thunderstorms through midnight. Waves building to 2 to 4 feet.
.TUESDAY...Northwest winds 15 to 25 knots diminishing to 10 to
20 knots. Waves subsiding to 1 to 3 feet.
.WEDNESDAY...Northwest winds 10 to 20 knots diminishing to 5 to
15 knots. Waves subsiding to calm to 2 feet.

$$

LSZ267-131600-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
348 AM EDT Sat Jul 13 2024

.EARLY THIS MORNING...South winds 10 to 20 knots. Waves calm to
2 feet.
.TODAY...Southwest winds 10 to 20 knots becoming south 5 to
15 knots in the afternoon, then becoming southeast 10 to 20 knots
late. Waves calm to 2 feet.
.TONIGHT...South winds 10 to 20 knots. A chance of showers and
thunderstorms. Waves building to 1 to 3 feet, then subsiding to
calm to 2 feet.
.SUNDAY...Southwest winds 10 to 20 knots veering west in the
afternoon, then diminishing to 5 to 15 knots late. A chance of
showers and thunderstorms. 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 increasing to 10 to
20 knots by mid afternoon. A chance of showers by mid afternoon.
Waves calm to 2 feet.
.MONDAY NIGHT...South winds 10 to 20 knots veering west after
midnight. Showers likely through midnight. A chance of
thunderstorms. Waves building to 2 to 4 feet.
.TUESDAY...West winds 15 to 25 knots veering northwest. Waves
subsiding to 1 to 3 feet.
.WEDNESDAY...Northwest winds 10 to 20 knots. Waves subsiding to
calm to 2 feet.

$$

LSZ261-131600-
MAFOR 1309/
Superior West 11510 11410 13400 11410 11516 11510. A chance of
thunderstorms tonight. Waves 1 foot or less.

Superior North Central 13510 11410 11310 11410 12510. A chance of
showers and thunderstorms tonight. Waves 1 to 2 feet.

Superior South Central 12500 11400 12310 12420 11510. A chance of
showers and thunderstorms overnight. Waves 1 foot or less today.
Waves 1 to 3 feet tonight.

Superior East 13500 11300 11310 13420. A chance of showers and
thunderstorms overnight. Waves around 1 foot today. Waves 1 to 3
feet building to 2 to 4 feet tonight.

$$

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