065
FZUS63 KMQT 010156
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
956 PM EDT Fri May 31 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 inch high pressure system centered over the
central Appalachians tonight will allow for weak ridging of 30.0
inches over Lake Superior. Low pressure averaging 29.6 inches
will track from northern Manitoba into far northern Quebec through
the weekend. Meanwhile, a 29.4 inch low pressure will track from
the eastern Dakotas into Ontario Sunday night and Monday, which
will push a cold front across Lake Superior. Weak ridging at 29.8
inches follows over the Upper Great Lakes Tuesday as a 29.2 inch
low develops over southern Manitoba. This system will enable a
29.5 inch trough to settle over Lake Superior Tuesday night into
Wednesday.

LSZ162-011000-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
956 PM EDT Fri May 31 2024 /856 PM CDT Fri May 31 2024/

.REST OF TONIGHT...Southwest winds 5 to 15 knots. A chance of
rain showers and a slight chance of thunderstorms. Waves calm to
2 feet.
.SATURDAY...South winds 5 to 15 knots becoming southwest 10 to
20 knots in the afternoon. 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...South winds 5 to 15 knots becoming east 10 to 20 knots
by mid afternoon. A slight chance of rain showers by mid
afternoon. Waves calm to 2 feet.
.SUNDAY NIGHT...East winds 10 to 20 knots. A chance of showers
through midnight. A chance of thunderstorms. Showers after
midnight. Waves building to 1 to 3 feet.
.MONDAY...Southeast winds 10 to 20 knots veering southwest by mid
afternoon. Showers through early afternoon. A chance of
thunderstorms. A chance of showers by mid afternoon. Waves 1 to
3 feet.
.MONDAY NIGHT...Northwest winds 5 to 15 knots veering northeast
after midnight. Waves subsiding to calm to 2 feet.
.TUESDAY...Northeast winds 5 to 15 knots becoming east 10 to
20 knots. A chance of thunderstorms. Showers likely. Waves
building to 1 to 3 feet, then subsiding to calm to 2 feet.
.WEDNESDAY...Southwest winds 15 to 25 knots becoming west 10 to
20 knots. A chance of showers. Waves building to 2 to 4 feet,
then subsiding to calm to 2 feet.

$$

LSZ263-011000-
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-
956 PM EDT Fri May 31 2024

.REST OF TONIGHT...South winds 5 to 15 knots veering southwest
after midnight. A chance of rain showers and a slight chance of
thunderstorms. Waves calm to 2 feet.
.SATURDAY...South winds 5 to 15 knots veering southwest late. A
slight chance of thunderstorms through early 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 east by mid
afternoon. Waves calm to 2 feet.
.SUNDAY NIGHT...East winds 5 to 15 knots becoming southeast 10 to
20 knots after midnight. Showers likely after midnight. Waves
building to 1 to 3 feet.
.MONDAY...South winds 10 to 20 knots. Showers through early
afternoon. A chance of thunderstorms. A chance of showers by mid
afternoon. Waves building to 2 to 4 feet, then subsiding to 1 to
3 feet.
.MONDAY NIGHT...Southwest winds 5 to 15 knots veering north after
midnight. Waves subsiding to calm to 2 feet.
.TUESDAY...East winds 5 to 15 knots veering south. A chance of
showers and thunderstorms. Waves calm to 2 feet.
.WEDNESDAY...Southwest winds 10 to 20 knots veering west. A
chance of showers. Waves building to 1 to 3 feet.

$$

LSZ264-011000-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
956 PM EDT Fri May 31 2024

.REST OF TONIGHT...South winds 5 to 15 knots veering southwest
after midnight. A chance of showers. Waves calm to 2 feet.
.SATURDAY...South winds 5 to 15 knots. Showers likely through
early afternoon, then a chance of showers by mid afternoon. Waves
calm to 2 feet.
.SATURDAY NIGHT...Southwest winds 5 to 15 knots. A slight chance
of rain showers through midnight. Waves calm to 2 feet.
.SUNDAY...South winds 5 to 15 knots backing southeast by mid
afternoon. Waves calm to 2 feet.
.SUNDAY NIGHT...Southeast winds 5 to 15 knots increasing to 10 to
20 knots after midnight. A chance of rain showers after midnight.
Waves building to 1 to 3 feet.
.MONDAY...Southeast winds 10 to 20 knots veering south by mid
afternoon. Showers. Waves building to 3 to 5 feet occasionally to
7 feet, then subsiding to 2 to 4 feet.
.MONDAY NIGHT...South winds 5 to 15 knots backing north after
midnight. Waves subsiding to calm to 2 feet.
.TUESDAY...East winds 5 to 15 knots veering south. A chance of
showers. Waves calm to 2 feet.
.WEDNESDAY...Southwest winds 10 to 20 knots. A chance of showers.
Waves building to 1 to 3 feet.

$$

LSZ265-011000-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
956 PM EDT Fri May 31 2024

.REST OF TONIGHT...South winds 5 to 15 knots. A chance of showers
and a slight chance of thunderstorms. Waves calm to 2 feet.
.SATURDAY...Southeast winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon, then veering south late. A chance of
showers and a slight chance of thunderstorms. Waves calm to
2 feet.
.SATURDAY NIGHT...South winds 5 to 15 knots veering southwest
after midnight. A slight chance of showers and thunderstorms
through midnight. Waves calm to 2 feet.
.SUNDAY...South winds 5 to 15 knots becoming east 10 to 20 knots
by mid afternoon. Waves calm to 2 feet.
.SUNDAY NIGHT...Southeast winds 10 to 20 knots. A chance of
showers after midnight. Waves calm to 2 feet.
.MONDAY...Southeast winds 15 to 25 knots. Showers and a chance of
thunderstorms. Waves building to 2 to 4 feet, then subsiding to
1 to 3 feet.
.MONDAY NIGHT...South winds 10 to 20 knots veering southwest
after midnight. A chance of showers and thunderstorms through
midnight. Waves subsiding to calm to 2 feet.
.TUESDAY...East winds 10 to 20 knots veering south. A chance of
showers. Waves calm to 2 feet.
.WEDNESDAY...South winds 10 to 20 knots veering west. A chance of
showers. Waves calm to 2 feet.

$$

LSZ266-011000-
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-
956 PM EDT Fri May 31 2024

.REST OF TONIGHT...South winds 5 to 15 knots. A chance of
showers. A slight chance of thunderstorms after midnight. Waves
calm to 2 feet.
.SATURDAY...South winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon. A chance of showers and a slight
chance of thunderstorms. Waves calm to 2 feet.
.SATURDAY NIGHT...South winds 5 to 15 knots veering southwest
after midnight. A slight chance of showers and thunderstorms
through midnight. Waves calm to 2 feet.
.SUNDAY...South winds 5 to 15 knots backing east by mid
afternoon. Waves calm to 2 feet.
.SUNDAY NIGHT...Southeast winds 10 to 20 knots. Waves building to
1 to 3 feet.
.MONDAY...Southeast winds 15 to 25 knots veering south by mid
afternoon. A chance of showers through early afternoon, then
showers likely and a chance of thunderstorms by mid afternoon.
Waves building to 3 to 5 feet occasionally to 7 feet, then
subsiding to 2 to 4 feet.
.MONDAY NIGHT...South winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. A chance of showers and thunderstorms.
Waves subsiding to calm to 2 feet.
.TUESDAY...Southeast winds 5 to 15 knots becoming south 10 to
20 knots. A chance of showers. Waves calm to 2 feet.
.WEDNESDAY...South winds 10 to 20 knots veering southwest. A
chance of showers. Waves building to 1 to 3 feet.

$$

LSZ267-011000-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
956 PM EDT Fri May 31 2024

.REST OF TONIGHT...South winds 10 to 20 knots. Waves calm to
2 feet.
.SATURDAY...South winds 10 to 20 knots. A chance of showers. A
slight chance of thunderstorms by mid afternoon. Waves calm to
2 feet.
.SATURDAY NIGHT...Southwest winds 10 to 20 knots backing south
after midnight, then diminishing to 5 to 15 knots late. A chance
of showers and thunderstorms through midnight. Waves calm to
2 feet.
.SUNDAY...South winds 5 to 15 knots backing east by mid
afternoon. Waves calm to 2 feet.
.SUNDAY NIGHT...Southeast winds 5 to 15 knots increasing to 10 to
20 knots after midnight. Waves calm to 2 feet.
.MONDAY...Southeast winds 10 to 20 knots. A chance of showers
through early afternoon, then showers likely by mid afternoon.
Waves building to 2 to 4 feet, then subsiding to 1 to 3 feet.
.MONDAY NIGHT...Southeast winds 10 to 20 knots veering south
after midnight. A chance of showers and thunderstorms. Waves
subsiding to calm to 2 feet.
.TUESDAY...Southeast winds 10 to 20 knots. A chance of showers.
Waves calm to 2 feet.
.WEDNESDAY...South winds 10 to 20 knots veering southwest. A
chance of showers. Waves calm to 2 feet.

$$
LSZ261-011000-
MAFOR 0103/
Superior West 11510 12500 12400 12410 11510. A chance of showers
overnight and Saturday morning. Waves 1 foot or less.

Superior North Central 11410 11510 11500 11406 11416 12410 11510.
Waves 2 feet or less.

Superior South Central 14400 12300 11506 11400. Waves 1 foot or
less.

Superior East 15410 11410 11510. A chance of showers Saturday
afternoon and Saturday evening. Waves 1 to 2 feet.

$$

JSS

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

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