023
FZUS63 KMQT 300737
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
337 AM EDT Thu May 30 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 30.2 ridge of high pressure will slowly shift
toward the Lower Great Lakes today, reaching the Mid Atlantic
states Friday night. A weak 29.9 inch trough moves near western
Lake Superior Friday while ridging over the east weakens to 30.0
inches. Another 29.9 inch trough moves through Lake Superior on
Saturday, followed by 29.9 inch ridging Saturday night. On
Sunday, a 29.5 inch area of low pressure will organize across the
Central Plains, then lift northeast near western Lake Superior or
northern Minnesota by Monday morning. This low will pull a 29.7
inch trough through Lake Superior Monday.

LSZ162-301545-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
337 AM EDT Thu May 30 2024 /237 AM CDT Thu May 30 2024/

.EARLY THIS MORNING...East winds 5 to 15 knots. Waves calm to
2 feet.
.TODAY...East winds 5 to 15 knots increasing to 10 to 20 knots
late. Waves calm to 2 feet.
.TONIGHT...East winds 10 to 20 knots veering south after
midnight. A slight chance of showers and thunderstorms after
midnight. Waves calm to 2 feet.
.FRIDAY...Southwest winds 10 to 20 knots backing south late. A
chance of showers and a slight chance of thunderstorms. Waves
calm to 2 feet.
.FRIDAY NIGHT...Southwest winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. A chance of showers. A slight
chance of thunderstorms after midnight. Waves calm to 2 feet.
.SATURDAY...Southwest winds 10 to 20 knots. A chance of showers.
Waves calm to 2 feet.
.SATURDAY NIGHT...Southwest winds 10 to 20 knots becoming west
5 to 15 knots after midnight. Waves calm to 2 feet.
.SUNDAY...East winds 5 to 15 knots increasing to 10 to 20 knots.
A chance of showers. A chance of thunderstorms. Showers likely.
Waves calm to 2 feet.
.MONDAY...West winds 10 to 20 knots becoming northwest 5 to
15 knots. A chance of thunderstorms. A chance of showers. Waves
building to 1 to 3 feet, then subsiding to calm to 2 feet.

$$

LSZ263-301545-
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-
337 AM EDT Thu May 30 2024

.EARLY THIS MORNING...South winds 5 to 15 knots. Waves calm to
2 feet.
.TODAY...Southeast winds 5 to 15 knots backing east in the
afternoon. Waves calm to 2 feet.
.TONIGHT...Southeast winds 5 to 15 knots becoming south 10 to
20 knots after midnight, then diminishing to 5 to 15 knots late.
Waves building to 1 to 3 feet.
.FRIDAY...Southwest winds 10 to 20 knots. A chance of showers. A
slight chance of thunderstorms by mid afternoon. Waves 1 to
3 feet.
.FRIDAY NIGHT...Southwest winds 5 to 15 knots backing south after
midnight. A chance of showers. A slight chance of thunderstorms
after midnight. Waves subsiding to calm to 2 feet.
.SATURDAY...Southwest winds 5 to 15 knots increasing to 10 to
20 knots by mid afternoon. A chance of showers. Waves building to
1 to 3 feet.
.SATURDAY NIGHT...Southwest winds 5 to 15 knots. Waves subsiding
to calm to 2 feet.
.SUNDAY...Southwest winds 5 to 15 knots becoming southeast 10 to
20 knots. A chance of thunderstorms. Showers likely. Waves calm
to 2 feet.
.MONDAY...West winds 10 to 20 knots becoming northwest 5 to
15 knots. Showers likely. Waves building to 1 to 3 feet, then
subsiding to calm to 2 feet.

$$

LSZ264-301545-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
337 AM EDT Thu May 30 2024

.EARLY THIS MORNING...Southwest winds less than 10 knots. Waves
calm to 2 feet.
.TODAY...South winds 5 to 15 knots backing southeast in the
afternoon. Waves calm to 2 feet.
.TONIGHT...Southeast winds 5 to 15 knots veering south after
midnight. Waves building to 2 to 4 feet, then subsiding to 1 to
3 feet.
.FRIDAY...South winds 5 to 15 knots becoming southwest 10 to
20 knots in the afternoon, then diminishing to 5 to 15 knots
late. A slight chance of showers. Waves 1 to 3 feet.
.FRIDAY NIGHT...South winds 5 to 15 knots. A chance of showers.
Waves subsiding to calm to 2 feet.
.SATURDAY...South winds 5 to 15 knots veering southwest by mid
afternoon. A chance of showers. Waves calm to 2 feet.
.SATURDAY NIGHT...Southwest winds 5 to 15 knots. Waves calm to
2 feet.
.SUNDAY...Southwest winds 5 to 15 knots backing southeast. Rain
showers likely and a chance of thunderstorms. Waves building to
1 to 3 feet.
.MONDAY...South winds 10 to 20 knots becoming northwest 5 to
15 knots. Showers likely, then a chance of showers. Waves
subsiding to calm to 2 feet.

$$

LSZ265-301545-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
337 AM EDT Thu May 30 2024

.EARLY THIS MORNING...Southwest 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. Waves calm to 2 feet.
.TONIGHT...South winds 10 to 20 knots. Waves building to 2 to
4 feet, then subsiding to calm to 2 feet.
.FRIDAY...South winds 10 to 20 knots. A slight chance of showers.
Waves calm to 2 feet.
.FRIDAY NIGHT...South winds 10 to 20 knots. A chance of showers.
Waves calm to 2 feet.
.SATURDAY...South winds 10 to 20 knots veering southwest by mid
afternoon. A chance of showers. Waves calm to 2 feet.
.SATURDAY NIGHT...Southwest winds 5 to 15 knots. Waves calm to
2 feet.
.SUNDAY...Southeast winds 5 to 15 knots increasing to 10 to
20 knots. A chance of showers. Waves calm to 2 feet.
.MONDAY...South winds 10 to 20 knots veering west. Showers
likely, then a chance of showers. Waves calm to 2 feet.

$$

LSZ266-301545-
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-
337 AM EDT Thu May 30 2024

.EARLY THIS MORNING...Southwest winds 5 to 15 knots. Waves calm
to 2 feet.
.TODAY...South winds 5 to 15 knots backing southeast in the
afternoon. Waves calm to 2 feet.
.TONIGHT...Southeast winds 10 to 20 knots veering south after
midnight. Waves building to 2 to 4 feet, then subsiding to 1 to
3 feet.
.FRIDAY...South winds 10 to 20 knots. Waves subsiding to calm to
2 feet.
.FRIDAY NIGHT...South winds 10 to 20 knots. A chance of showers
after midnight. Waves calm to 2 feet.
.SATURDAY...South winds 10 to 20 knots. A chance of showers.
Waves calm to 2 feet.
.SATURDAY NIGHT...South winds 5 to 15 knots veering southwest
after midnight. Waves calm to 2 feet.
.SUNDAY...Southeast winds 5 to 15 knots becoming south 10 to
20 knots. A chance of rain showers. Waves building to 1 to
3 feet.
.MONDAY...South winds 15 to 25 knots becoming northwest 10 to
20 knots. Showers likely. A chance of showers. Waves subsiding to
calm to 2 feet.

$$

LSZ267-301545-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
337 AM EDT Thu May 30 2024

.EARLY THIS MORNING...Northwest winds 5 to 15 knots. Waves calm
to 2 feet.
.TODAY...West winds 5 to 15 knots backing south in the afternoon,
then backing east late. Waves calm to 2 feet.
.TONIGHT...Southeast winds 5 to 15 knots becoming south 10 to
20 knots after midnight. Waves building to 1 to 3 feet.
.FRIDAY...South winds 10 to 20 knots. Waves subsiding to calm to
2 feet.
.FRIDAY NIGHT...South winds 10 to 20 knots. A chance of showers
after midnight. Waves calm to 2 feet.
.SATURDAY...South winds 10 to 20 knots. A chance of showers.
Waves calm to 2 feet.
.SATURDAY NIGHT...South winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. Waves calm to 2 feet.
.SUNDAY...Southeast winds 5 to 15 knots increasing to 10 to
20 knots. A chance of showers. Waves calm to 2 feet.
.MONDAY...South winds 10 to 20 knots veering west. Showers
likely. A chance of showers. Waves building to 1 to 3 feet, then
subsiding to calm to 2 feet.

$$

LSZ261-301545-
MAFOR 3009/
Superior West 13200 12210 11310 11410 11420. Waves 2 feet or
less.

Superior North Central 11500 11400 12310 12320 12420. Waves 2
feet or less today. Waves 1 to 3 feet tonight.

Superior South Central 11500 11400 11310 13320 11420 11410. Waves
2 feet or less today. Waves 1 to 3 feet tonight.

Superior East 11700 11600 12400 11300 11310 12410. Waves 1 foot
or less today. Waves 1 to 3 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