495
FZUS63 KMQT 011343
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
943 AM EDT Sat Jun 1 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 ridge extending from the
Lower Great Lakes to the Carolinas will drift east today.
Meanwhile, a 29.9 inch low pressure trough over Manitoba and the
eastern Dakotas will shift east, dissipating while moving over
Lake Superior tonight. On Sunday, weak 30.0 inch high pressure
ridging will develop across the western Great Lakes. As the ridge
shifts to Quebec and the Lower Great Lakes during Sunday night, a
29.6 inch trough will sweep across the Northern Plains to
Minnesota. On Monday, this trough will dissipate before reaching
Lake Superior, leaving Lake Superior between 30.0 inch ridging
over Quebec into New England and a new trough of 29.4 inches
emerging over the western Dakotas. On Tuesday, 29.2 inch low
pressure tracking across the Canadian Prairies will power the
trough eastward to the Upper Mississippi Valley. The trough will
then sail across Lake Superior Tuesday night and Wednesday morning
while the parent low pressure tracks from the Canadian Prairies
to northern Ontario.



LSZ162-012145-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
943 AM EDT Sat Jun 1 2024 /843 AM CDT Sat Jun 1 2024/

...DENSE FOG ADVISORY IN EFFECT UNTIL 11 PM EDT /10 PM CDT/ THIS
EVENING...

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

$$

LSZ263-012145-
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-
943 AM EDT Sat Jun 1 2024

...DENSE FOG ADVISORY IN EFFECT UNTIL 11 PM EDT THIS EVENING...

.REST OF TODAY...South winds 5 to 15 knots veering southwest
late. Patchy dense fog. Scattered showers and a slight chance of
thunderstorms. Waves calm to 2 feet.
.TONIGHT...Southwest winds 5 to 15 knots becoming west less than
10 knots late. Waves calm to 2 feet.
.SUNDAY...Southwest winds less than 10 knots becoming east 5 to
15 knots in the afternoon. Waves calm to 2 feet.
.SUNDAY NIGHT...East winds 5 to 15 knots becoming southeast 10 to
20 knots after midnight. A chance of rain showers. A slight
chance of thunderstorms after midnight. Waves building to 1 to
3 feet.
.MONDAY...Southeast winds 10 to 20 knots. Showers through early
afternoon, then a chance of showers. Waves building to 2 to 4
feet.
.MONDAY NIGHT...Southeast winds 5 to 15 knots. Waves subsiding to
calm to 2 feet.
.TUESDAY...East winds 5 to 15 knots veering south. A chance of
thunderstorms. Showers likely. Waves building to 1 to 3 feet.
.WEDNESDAY...Southwest winds 10 to 20 knots veering west. A
chance of showers. Waves building to 2 to 4 feet, then subsiding
to 1 to 3 feet.

$$

LSZ264-012145-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
943 AM EDT Sat Jun 1 2024

...DENSE FOG ADVISORY IN EFFECT UNTIL 11 PM EDT THIS EVENING...

.REST OF TODAY...South winds 5 to 15 knots. Patchy dense fog.
Scattered showers and a slight chance of thunderstorms. Waves
calm to 2 feet.
.TONIGHT...Southwest winds 5 to 15 knots becoming west less than
10 knots late. Waves calm to 2 feet.
.SUNDAY...Southwest winds less than 10 knots becoming southeast
5 to 15 knots in the afternoon. Waves calm to 2 feet.
.SUNDAY NIGHT...Southeast winds 5 to 15 knots increasing to 10 to
20 knots after midnight. A slight chance of rain showers after
midnight. Waves building to 1 to 3 feet.
.MONDAY...Southeast winds 15 to 25 knots diminishing to 10 to
20 knots by mid afternoon. Showers. Waves building to 3 to 5 feet
occasionally to 7 feet, then subsiding to 2 to 4 feet.
.MONDAY NIGHT...Southeast winds 5 to 15 knots. Waves subsiding to
calm to 2 feet.
.TUESDAY...Southeast winds 5 to 15 knots. Showers likely. Waves
building to 1 to 3 feet.
.WEDNESDAY...Southwest winds 10 to 20 knots becoming west 5 to
15 knots. A chance of showers. Waves building to 2 to 4 feet,
then subsiding to 1 to 3 feet.

$$

LSZ265-012145-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
943 AM EDT Sat Jun 1 2024

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

$$

LSZ266-012145-
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-
943 AM EDT Sat Jun 1 2024

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

$$

LSZ267-012145-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
943 AM EDT Sat Jun 1 2024

.REST OF TODAY...South winds 10 to 20 knots. A slight chance of
showers by mid afternoon. Waves calm to 2 feet.
.TONIGHT...South winds 10 to 20 knots diminishing to 5 to
15 knots late. A chance of showers through midnight. Waves calm
to 2 feet.
.SUNDAY...South winds 5 to 15 knots backing north in the
afternoon, then veering northeast late. Waves calm to 2 feet.
.SUNDAY NIGHT...Southeast winds 5 to 15 knots. Waves calm to
2 feet.
.MONDAY...Southeast winds 10 to 20 knots. A chance of showers.
Waves building to 1 to 3 feet.
.MONDAY NIGHT...Southeast winds 10 to 20 knots. Showers likely
through midnight, then a chance of showers after midnight. 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. Showers likely. A chance
of thunderstorms. A chance of showers. Waves calm to 2 feet.

$$
LSZ261-012145-
MAFOR 0115/
Superior West 11400 19404 11510 19514 11410 19414 11400 11500
12600 11500. Waves 1 foot or less.

Superior North Central 11300 19304 12410 19414 11510 12500 12600.
Waves 2 feet or less.

Superior South Central 11300 19306 11410 11406 12400 11500 11600
11700. Waves 1 foot or less.

Superior East 13410 13510 12400. A chance of showers this
evening. Waves 1 to 2 feet.

$$

LC

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

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