067
FZUS63 KMQT 060748
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
348 AM EDT Thu Jun 6 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...Troughing of 29.3 inches early this morning weakens
as a secondary trough of 29.4 inches moves through Lake Superior
today before leaving late this afternoon. The troughing over Lake
Superior weakens to 29.6 inches by Friday as the parent low,
currently 29.2 inches just southwest of Hudson Bay, fills to 29.4
inches over southern James Bay. Weak troughing at 29.7 inches
remains in place over Lake Superior Saturday before ridging near
30.0 inches pushes into the lake late Sunday as a high pressure
shifts into the Canadian Prairies. The ridge builds to 30.1 inches
over Lake Superior Monday morning as the high moves overhead and
deteriorates with time.

LSZ162-061600-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
348 AM EDT Thu Jun 6 2024 /248 AM CDT Thu Jun 6 2024/

.EARLY THIS MORNING...West winds 15 to 25 knots. A slight chance
of showers. Waves 2 to 4 feet.
.TODAY...West winds 20 to 30 knots. A chance of showers. Waves
2 to 4 feet.
.TONIGHT...West winds 15 to 25 knots. A slight chance of showers
through midnight. Waves 2 to 4 feet.
.FRIDAY...West winds 15 to 25 knots. Waves subsiding to 1 to
3 feet.
.FRIDAY NIGHT...West winds 10 to 20 knots. Waves subsiding to
calm to 2 feet.
.SATURDAY...West winds 15 to 25 knots. A chance of showers. Waves
building to 2 to 4 feet, then subsiding to 1 to 3 feet.
.SATURDAY NIGHT...West winds 10 to 20 knots veering northwest
after midnight. A chance of showers. Waves subsiding to calm to
2 feet.
.SUNDAY...Northwest winds 10 to 20 knots becoming north 5 to
15 knots. Waves calm to 2 feet.
.MONDAY...East winds 5 to 15 knots veering south. Waves calm to
2 feet.

$$

LSZ263-061600-
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 Thu Jun 6 2024

.EARLY THIS MORNING...West winds 15 to 25 knots. A slight chance
of showers. Waves 2 to 4 feet building to 3 to 5 feet
occasionally to 7 feet.
.TODAY...West winds 15 to 25 knots increasing to 20 to 30 knots
in the afternoon. A chance of showers. Waves building to 3 to
6 feet occasionally to 8 feet.
.TONIGHT...West winds 15 to 25 knots diminishing to 10 to
20 knots after midnight, then increasing to 15 to 25 knots late.
A slight chance of showers. Waves subsiding to 3 to 5 feet
occasionally to 7 feet.
.FRIDAY...West winds 15 to 25 knots diminishing to 10 to 20 knots
late. A slight chance of showers through early afternoon. Waves
subsiding to 2 to 4 feet.
.FRIDAY NIGHT...West winds 5 to 15 knots. Waves subsiding to calm
to 2 feet.
.SATURDAY...West winds 10 to 20 knots. A chance of showers. Waves
building to 2 to 4 feet.
.SATURDAY NIGHT...West winds 5 to 15 knots veering northwest
after midnight. A chance of showers. Waves subsiding to 1 to
3 feet.
.SUNDAY...Northwest winds 10 to 20 knots becoming north 5 to
15 knots. Waves subsiding to calm to 2 feet.
.MONDAY...Northeast winds 5 to 15 knots veering southwest. Waves
calm to 2 feet.

$$

LSZ264-061600-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
348 AM EDT Thu Jun 6 2024

.EARLY THIS MORNING...West winds 10 to 20 knots. Waves 2 to
4 feet.
.TODAY...West winds 15 to 25 knots increasing to 20 to 30 knots
in the afternoon. A chance of rain showers. Waves building to
3 to 6 feet occasionally to 8 feet.
.TONIGHT...West winds 15 to 25 knots diminishing to 10 to
20 knots after midnight. A slight chance of rain showers. Waves
subsiding to 3 to 5 feet occasionally to 7 feet.
.FRIDAY...West winds 15 to 25 knots diminishing to 10 to 20 knots
late. A slight chance of showers. Waves subsiding to 2 to 4 feet.
.FRIDAY NIGHT...West winds 5 to 15 knots. Waves subsiding to calm
to 2 feet.
.SATURDAY...West winds 10 to 20 knots. Waves building to 2 to
4 feet.
.SATURDAY NIGHT...West winds 5 to 15 knots veering northwest
after midnight. A chance of showers. Waves subsiding to 1 to
3 feet.
.SUNDAY...Northwest winds 10 to 20 knots veering north. Waves
building to 2 to 4 feet, then subsiding to 1 to 3 feet.
.MONDAY...North winds 5 to 15 knots backing southwest. Waves
subsiding to calm to 2 feet.

$$

LSZ265-061600-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
348 AM EDT Thu Jun 6 2024

.EARLY THIS MORNING...West winds 10 to 20 knots. Waves calm to
2 feet.
.TODAY...West winds 15 to 25 knots increasing to 20 to 30 knots
late. A chance of showers. Waves building to 2 to 4 feet.
.TONIGHT...West winds 20 to 30 knots. A slight chance of showers.
Waves building to 3 to 5 feet occasionally to 7 feet, then
subsiding to 2 to 4 feet.
.FRIDAY...West winds 20 to 30 knots diminishing to 15 to 25 knots
late. A slight chance of showers through early afternoon. Waves
subsiding to 1 to 3 feet.
.FRIDAY NIGHT...West winds 10 to 20 knots. Waves subsiding to
calm to 2 feet.
.SATURDAY...West winds 10 to 20 knots increasing to 15 to
25 knots by mid afternoon. Waves calm to 2 feet.
.SATURDAY NIGHT...West winds 10 to 20 knots. A chance of showers.
Waves calm to 2 feet.
.SUNDAY...Northwest winds 15 to 25 knots becoming north 10 to
20 knots. Waves building to 1 to 3 feet.
.MONDAY...North winds 10 to 20 knots becoming southwest 5 to
15 knots. Waves subsiding to calm to 2 feet.

$$

LSZ266-061600-
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 Thu Jun 6 2024

.EARLY THIS MORNING...Southwest winds 10 to 20 knots. A slight
chance of showers and thunderstorms. Waves 1 to 3 feet.
.TODAY...Southwest winds 10 to 20 knots becoming west 15 to
25 knots in the afternoon. A chance of showers. Waves building to
3 to 5 feet occasionally to 7 feet.
.TONIGHT...West winds 15 to 25 knots increasing to 20 to 30 knots
after midnight. A chance of showers. Waves building to 3 to
6 feet occasionally to 8 feet.
.FRIDAY...West winds 20 to 30 knots diminishing to 15 to 25 knots
late. A slight chance of showers. Waves building to 4 to 7 feet
occasionally to 9 feet, then subsiding to 3 to 6 feet
occasionally to 8 feet.
.FRIDAY NIGHT...West winds 10 to 20 knots. A slight chance of
showers through midnight. Waves subsiding to 1 to 3 feet.
.SATURDAY...West winds 10 to 20 knots. Waves 1 to 3 feet.
.SATURDAY NIGHT...West winds 10 to 20 knots veering northwest
after midnight. A chance of showers. Waves 1 to 3 feet.
.SUNDAY...Northwest winds 15 to 25 knots becoming north 10 to
20 knots. Waves building to 3 to 5 feet occasionally to 7 feet,
then subsiding to 2 to 4 feet.
.MONDAY...North winds 10 to 20 knots becoming west 5 to 15 knots.
Waves subsiding to calm to 2 feet.

$$

LSZ267-061600-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
348 AM EDT Thu Jun 6 2024

.EARLY THIS MORNING...Southwest winds 10 to 20 knots. A slight
chance of showers and thunderstorms. Waves calm to 2 feet.
.TODAY...Southwest winds 10 to 20 knots veering west in the
afternoon. A slight chance of thunderstorms through early
afternoon. A chance of showers. Waves building to 1 to 3 feet.
.TONIGHT...West winds 10 to 20 knots increasing to 15 to 25 knots
after midnight. A chance of showers. Waves building to 3 to
6 feet occasionally to 8 feet.
.FRIDAY...West winds 20 to 30 knots. A chance of showers. Waves
building to 4 to 8 feet occasionally to 10 feet.
.FRIDAY NIGHT...West winds 15 to 25 knots diminishing to 10 to
20 knots after midnight. A slight chance of showers through
midnight. Waves subsiding to 1 to 3 feet.
.SATURDAY...West winds 10 to 20 knots. Waves 1 to 3 feet.
.SATURDAY NIGHT...West winds 10 to 20 knots veering northwest
after midnight. A chance of showers. Waves 1 to 3 feet.
.SUNDAY...Northwest winds 15 to 25 knots becoming north 10 to
20 knots. Waves building to 2 to 4 feet.
.MONDAY...Northwest winds 10 to 20 knots diminishing to 5 to
15 knots. Waves subsiding to calm to 2 feet.

$$

LSZ261-061600-
MAFOR 0609/
Superior West 15630 12620. A chance of showers this afternoon.
Waves 3 to 5 feet today. Waves 3 to 5 feet subsiding to 2 to 4
feet tonight.

Superior North Central 11520 15630 11620. A chance of showers
today. Waves 2 to 4 feet building to 3 to 6 feet today. Waves 3
to 6 feet tonight.

Superior South Central 11520 11620 15630. A chance of showers
today. Waves 1 to 3 feet building to 2 to 4 feet today. Waves 3
to 5 feet tonight.

Superior East 13510 11610 12620 12630. A chance of showers early
this morning. A chance of showers this afternoon. A chance of
showers tonight. Waves 1 to 3 feet today. Waves 2 to 4 feet
building to 3 to 6 feet tonight.

$$

TAP

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

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