603
FZUS63 KMQT 110135
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
935 PM EDT Fri May 10 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 weak 29.7 inch clipper is actively moving across
central Lake Superior and will pass southeast over the Upper
Great Lakes tonight. A 29.8 inch ridge will build in briefly on
Saturday before another clipper at 29.6 inches approaches from the
northwest early Sunday morning. This second clipper passes
southeast over Lake Superior through Sunday. High pressure near
29.9 inches builds in from northern Ontario behind the passing
clipper Tuesday, steadily rising to 30.1 inches by Wednesday.


LSZ162-110945-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
935 PM EDT Fri May 10 2024 /835 PM CDT Fri May 10 2024/

.REST OF TONIGHT...West winds 10 to 20 knots veering northwest
after midnight. A slight chance of showers and thunderstorms by
late evening. Waves calm to 2 feet.
.SATURDAY...Northwest winds 5 to 15 knots backing southwest in
the afternoon, then becoming south 10 to 20 knots late. Waves
calm to 2 feet.
.SATURDAY NIGHT...South winds 5 to 15 knots increasing to 10 to
20 knots after midnight. A slight chance of rain showers. Waves
building to 1 to 3 feet.
.SUNDAY...Southwest winds 10 to 20 knots veering west by mid
afternoon. A slight chance of rain showers. Waves subsiding to
calm to 2 feet, then building to 1 to 3 feet.
.SUNDAY NIGHT...Northwest winds 10 to 20 knots veering north
after midnight. Waves subsiding to calm to 2 feet.
.MONDAY...North winds 10 to 20 knots veering south by mid
afternoon. Waves building to 1 to 3 feet.
.MONDAY NIGHT...Northeast winds 10 to 20 knots. Waves subsiding
to calm to 2 feet.
.TUESDAY...East winds 10 to 20 knots backing northeast. Waves
calm to 2 feet.
.WEDNESDAY...East winds 10 to 20 knots backing northeast. A
chance of rain showers. Waves building to 1 to 3 feet.

$$

LSZ263-110945-
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-
935 PM EDT Fri May 10 2024

.REST OF TONIGHT...West winds 5 to 15 knots veering northwest
after midnight. A slight chance of rain showers by late evening.
Waves calm to 2 feet.
.SATURDAY...Northwest winds 5 to 15 knots backing southwest late.
Waves building to 1 to 3 feet.
.SATURDAY NIGHT...South winds 5 to 15 knots increasing to 10 to
20 knots late. A chance of rain showers. Waves subsiding to calm
to 2 feet, then building to 1 to 3 feet.
.SUNDAY...Southwest winds 10 to 20 knots becoming west 5 to
15 knots by mid afternoon. A slight chance of rain showers. A
slight chance of thunderstorms by mid afternoon. Waves 1 to
3 feet.
.SUNDAY NIGHT...Northwest winds 5 to 15 knots becoming north
10 to 20 knots after midnight. Waves subsiding to calm to 2 feet,
then building to 1 to 3 feet.
.MONDAY...North winds 10 to 20 knots becoming south 5 to 15 knots
by mid afternoon. Waves subsiding to calm to 2 feet.
.MONDAY NIGHT...Northeast winds 5 to 15 knots backing north after
midnight. Waves calm to 2 feet.
.TUESDAY...Northeast winds 5 to 15 knots veering east. Waves calm
to 2 feet.
.WEDNESDAY...East winds 5 to 15 knots. A chance of rain showers.
Waves building to 1 to 3 feet, then subsiding to calm to 2 feet.

$$

LSZ264-110945-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
935 PM EDT Fri May 10 2024

.REST OF TONIGHT...West winds 5 to 15 knots veering northwest
after midnight. A slight chance of rain showers by late evening.
Waves calm to 2 feet.
.SATURDAY...Northwest winds 5 to 15 knots backing west late.
Waves calm to 2 feet.
.SATURDAY NIGHT...Southwest winds 5 to 15 knots backing south
after midnight, then increasing to 10 to 20 knots late. A chance
of rain showers. Waves building to 1 to 3 feet.
.SUNDAY...South winds 10 to 20 knots becoming southwest 5 to
15 knots by mid afternoon. A chance of rain showers. Waves
building to 2 to 4 feet, then subsiding to 1 to 3 feet.
.SUNDAY NIGHT...West winds 5 to 15 knots becoming north 10 to
20 knots after midnight. Waves subsiding to calm to 2 feet, then
building to 1 to 3 feet.
.MONDAY...North winds 10 to 20 knots becoming west 5 to 15 knots
by mid afternoon. Waves subsiding to calm to 2 feet.
.MONDAY NIGHT...Northwest winds 5 to 15 knots veering north after
midnight. Waves calm to 2 feet.
.TUESDAY...North winds 5 to 15 knots backing west. Waves calm to
2 feet.
.WEDNESDAY...East winds 5 to 15 knots veering southeast. A chance
of rain showers. Waves building to 1 to 3 feet.

$$

LSZ265-110945-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
935 PM EDT Fri May 10 2024

.REST OF TONIGHT...North winds 5 to 15 knots backing northwest
after midnight. A chance of rain showers. Waves calm to 2 feet.
.SATURDAY...Northwest winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon, then diminishing to 5 to 15 knots
late. A slight chance of rain showers through early afternoon.
Waves calm to 2 feet.
.SATURDAY NIGHT...West winds 5 to 15 knots backing south after
midnight, then increasing to 10 to 20 knots late. A slight chance
of rain showers after midnight. Waves calm to 2 feet.
.SUNDAY...South winds 10 to 20 knots becoming west 5 to 15 knots
by mid afternoon. A chance of showers. A slight chance of
thunderstorms by mid afternoon. Waves building to 2 to 4 feet,
then subsiding to calm to 2 feet.
.SUNDAY NIGHT...West winds 5 to 15 knots becoming northwest 10 to
20 knots after midnight. Waves calm to 2 feet.
.MONDAY...North winds 10 to 20 knots. Waves calm to 2 feet.
.MONDAY NIGHT...Northwest winds 10 to 20 knots veering north
after midnight. Waves calm to 2 feet.
.TUESDAY...North winds 10 to 20 knots becoming northwest 5 to
15 knots. Waves calm to 2 feet.
.WEDNESDAY...East winds 10 to 20 knots veering southeast. A
chance of rain showers. Waves calm to 2 feet.

$$

LSZ266-110945-
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-
935 PM EDT Fri May 10 2024

.REST OF TONIGHT...East winds 5 to 15 knots backing north after
midnight. A chance of rain showers. Waves calm to 2 feet.
.SATURDAY...Northwest winds 10 to 20 knots diminishing to 5 to
15 knots late. A slight chance of rain showers through early
afternoon. Waves calm to 2 feet.
.SATURDAY NIGHT...West winds 5 to 15 knots backing southwest
after midnight, then becoming south 10 to 20 knots late. A slight
chance of rain showers after midnight. Waves building to 1 to
3 feet.
.SUNDAY...South winds 15 to 25 knots diminishing to 10 to
20 knots by mid afternoon. A chance of rain showers. A slight
chance of thunderstorms by mid afternoon. Waves building to 3 to
5 feet occasionally to 7 feet, then subsiding to 1 to 3 feet.
.SUNDAY NIGHT...West winds 5 to 15 knots becoming northwest 10 to
20 knots after midnight. Waves subsiding to calm to 2 feet, then
building to 1 to 3 feet.
.MONDAY...Northwest winds 10 to 20 knots. Waves 1 to 3 feet.
.MONDAY NIGHT...Northwest winds 10 to 20 knots veering north
after midnight. Waves 1 to 3 feet.
.TUESDAY...North winds 10 to 20 knots backing northwest. Waves
subsiding to calm to 2 feet.
.WEDNESDAY...Northeast winds 5 to 15 knots becoming southeast
10 to 20 knots. Waves calm to 2 feet.

$$

LSZ267-110945-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
935 PM EDT Fri May 10 2024

.REST OF TONIGHT...Southeast winds 5 to 15 knots backing north
after midnight. A chance of rain showers. Waves calm to 2 feet.
.SATURDAY...North winds 10 to 20 knots backing northwest in the
afternoon. A slight chance of rain showers through early
afternoon. Waves calm to 2 feet.
.SATURDAY NIGHT...Northwest winds 10 to 20 knots becoming west
5 to 15 knots after midnight, then backing south late. A slight
chance of rain showers after midnight. Waves calm to 2 feet.
.SUNDAY...South winds 10 to 20 knots. A chance of rain showers.
Waves building to 2 to 4 feet, then subsiding to 1 to 3 feet.
.SUNDAY NIGHT...Southwest winds 10 to 20 knots veering northwest
after midnight. Waves subsiding to calm to 2 feet.
.MONDAY...Northwest winds 10 to 20 knots increasing to 15 to
25 knots by mid afternoon. Waves building to 2 to 4 feet.
.MONDAY NIGHT...Northwest winds 15 to 25 knots becoming north
10 to 20 knots after midnight. Waves subsiding to 1 to 3 feet.
.TUESDAY...Northwest winds 10 to 20 knots veering north. Waves
subsiding to calm to 2 feet, then building to 1 to 3 feet.
.WEDNESDAY...North winds 10 to 20 knots veering southeast. Waves
calm to 2 feet.

$$
LSZ261-110945-
MAFOR 1103/
Superior West 11610 13710 11600 11510 12410. Waves 1 to 2 feet.

Superior North Central 11700 11800 13710 11610 11620 11610. Waves
2 feet or less.

Superior South Central 11800 12700 13710 11700 11600. A chance of
rain showers overnight. Waves 2 feet or less.

Superior East 11200 12800 11810 14710. A chance of rain showers
overnight and Saturday morning. Waves 2 feet or less.

$$

BW

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

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