929
FZUS63 KMQT 020806
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
406 AM EDT Sun Jun 2 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 30.0 inch high pressure ridge over the Upper
Mississippi Valley will settle over the western Great Lakes today.
As the ridge shifts to Quebec and the Lower Great Lakes during
tonight, 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 the Lower Great Lakes 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 toward
northern Ontario. On Thursday, the low, weakening to 29.3 inches,
will slowly drift southeast across northern Ontario while a 30.0
inch high pressure ridge builds southeast into the Central Plains.

LSZ162-021615-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
406 AM EDT Sun Jun 2 2024 /306 AM CDT Sun Jun 2 2024/

...DENSE FOG ADVISORY IN EFFECT UNTIL 8 AM EDT /7 AM CDT/ THIS
MORNING...

.EARLY THIS MORNING...Southwest winds 5 to 15 knots. Patchy dense
fog. Waves calm to 2 feet.
.TODAY...Southwest winds 5 to 15 knots backing south in the
afternoon, then backing east late. Waves calm to 2 feet.
.TONIGHT...East winds 10 to 20 knots veering southeast after
midnight. A chance of showers. A slight chance of thunderstorms
after midnight. Waves building to 2 to 4 feet.
.MONDAY...Southeast winds 10 to 20 knots becoming east 5 to
15 knots late. A chance of showers and thunderstorms. Waves
subsiding to calm to 2 feet.
.MONDAY NIGHT...Northeast winds 5 to 15 knots. A slight chance of
showers after midnight. Waves calm to 2 feet.
.TUESDAY...Northeast winds 5 to 15 knots increasing to 15 to
25 knots by mid afternoon. A chance of showers. A chance of
thunderstorms by mid afternoon. Waves building to 1 to 3 feet.
.TUESDAY NIGHT...Northeast winds 10 to 20 knots veering southwest
after midnight. Showers through midnight. A chance of
thunderstorms. A chance of showers after midnight. Waves
subsiding to calm to 2 feet.
.WEDNESDAY...Southwest winds 15 to 25 knots veering west. A
chance of showers. Waves building to 2 to 4 feet.
.THURSDAY...West winds 20 to 30 knots diminishing to 15 to
25 knots. Waves building to 3 to 6 feet occasionally to 8 feet,
then subsiding to 2 to 4 feet.

$$

LSZ263-021615-
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-
406 AM EDT Sun Jun 2 2024

...DENSE FOG ADVISORY IN EFFECT UNTIL 8 AM EDT THIS MORNING...

.EARLY THIS MORNING...Southwest winds 5 to 15 knots. Patchy dense
fog. Waves calm to 2 feet.
.TODAY...Southwest winds less than 10 knots becoming south 5 to
15 knots in the afternoon, then backing east late. Waves calm to
2 feet.
.TONIGHT...East winds 10 to 20 knots veering south late. A chance
of rain showers and a slight chance of thunderstorms after
midnight. Waves building to 2 to 4 feet.
.MONDAY...South winds 10 to 20 knots backing southeast in the
afternoon, then diminishing to 5 to 15 knots late. A chance of
showers and a slight chance of thunderstorms. Waves subsiding to
1 to 3 feet, then building to 2 to 4 feet.
.MONDAY NIGHT...Southeast winds 5 to 15 knots backing east after
midnight. A slight chance of showers after midnight. Waves
subsiding to calm to 2 feet.
.TUESDAY...East winds 5 to 15 knots. A chance of showers. Waves
building to 1 to 3 feet.
.TUESDAY NIGHT...Southeast winds 5 to 15 knots veering southwest
after midnight. Showers and a chance of thunderstorms. Waves 1 to
3 feet.
.WEDNESDAY...Southwest winds 10 to 20 knots veering west. A
chance of showers. Waves building to 2 to 4 feet.
.THURSDAY...West winds 15 to 25 knots diminishing to 10 to
20 knots. Waves building to 3 to 6 feet occasionally to 8 feet,
then subsiding to 2 to 4 feet.

$$

LSZ264-021615-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
406 AM EDT Sun Jun 2 2024

...DENSE FOG ADVISORY IN EFFECT UNTIL 8 AM EDT THIS MORNING...

.EARLY THIS MORNING...West winds 5 to 15 knots. Areas of dense
fog. Waves calm to 2 feet.
.TODAY...Southwest winds less than 10 knots becoming south 5 to
15 knots in the afternoon, then backing southeast late. Waves
calm to 2 feet.
.TONIGHT...Southeast winds 5 to 15 knots increasing to 10 to
20 knots after midnight. A chance of rain showers after midnight.
Waves building to 3 to 5 feet occasionally to 7 feet.
.MONDAY...Southeast winds 10 to 20 knots. A chance of showers and
a slight chance of thunderstorms. Waves subsiding to 2 to 4 feet.
.MONDAY NIGHT...Southeast winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. A slight chance of showers and
thunderstorms through midnight. Waves subsiding to calm to
2 feet.
.TUESDAY...Southeast winds 5 to 15 knots backing east by mid
afternoon. Waves calm to 2 feet.
.TUESDAY NIGHT...Southeast winds 10 to 20 knots becoming south
5 to 15 knots after midnight. Showers likely and a chance of
thunderstorms. Waves building to 2 to 4 feet.
.WEDNESDAY...Southwest winds 10 to 20 knots veering west. A
chance of showers. Waves 2 to 4 feet.
.THURSDAY...West winds 15 to 25 knots diminishing to 10 to
20 knots. Waves building to 3 to 6 feet occasionally to 8 feet,
then subsiding to 2 to 4 feet.

$$

LSZ265-021615-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
406 AM EDT Sun Jun 2 2024

.EARLY THIS MORNING...West winds 5 to 15 knots. Areas of fog.
Waves calm to 2 feet.
.TODAY...Northeast winds 5 to 15 knots veering east in the
afternoon. Waves calm to 2 feet.
.TONIGHT...Southeast winds 10 to 20 knots. A slight chance of
showers after midnight. Waves building to 1 to 3 feet.
.MONDAY...Southeast winds 10 to 20 knots increasing to 15 to
25 knots in the afternoon, then diminishing to 10 to 20 knots
late. A chance of showers and thunderstorms. Waves 1 to 3 feet.
.MONDAY NIGHT...Southeast winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. A slight chance of thunderstorms
through midnight. A slight chance of showers. Waves subsiding to
calm to 2 feet.
.TUESDAY...Southeast winds 5 to 15 knots increasing to 10 to
20 knots by mid afternoon. A chance of showers by mid afternoon.
Waves calm to 2 feet.
.TUESDAY NIGHT...Southeast winds 10 to 20 knots veering south
after midnight. A chance of showers through midnight. A chance of
thunderstorms. Showers likely after midnight. Waves calm to
2 feet.
.WEDNESDAY...Southwest winds 10 to 20 knots veering west. A
chance of showers. Waves calm to 2 feet.
.THURSDAY...West winds 15 to 25 knots. A chance of showers. Waves
building to 1 to 3 feet, then subsiding to calm to 2 feet.

$$

LSZ266-021615-
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-
406 AM EDT Sun Jun 2 2024

.EARLY THIS MORNING...West winds 5 to 15 knots. Areas of fog.
Waves calm to 2 feet.
.TODAY...Northwest winds 5 to 15 knots veering east late. Waves
calm to 2 feet.
.TONIGHT...Southeast winds 5 to 15 knots becoming south 10 to
20 knots late. Waves building to 2 to 4 feet.
.MONDAY...South winds 10 to 20 knots becoming southeast 15 to
25 knots in the afternoon, then becoming south 10 to 20 knots
late. A chance of showers. A slight 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...Southeast winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. A chance of showers and a slight
chance of thunderstorms. Waves subsiding to calm to 2 feet.
.TUESDAY...Southeast winds 5 to 15 knots increasing to 10 to
20 knots by mid afternoon. A chance of showers. Waves calm to
2 feet.
.TUESDAY NIGHT...Southeast winds 15 to 25 knots becoming south
10 to 20 knots after midnight. A chance of showers through
midnight. A chance of thunderstorms. Showers likely after
midnight. Waves building to 2 to 4 feet.
.WEDNESDAY...Southwest winds 10 to 20 knots veering west. A
chance of showers and thunderstorms. Waves subsiding to 1 to
3 feet, then building to 2 to 4 feet.
.THURSDAY...West winds 15 to 25 knots. A chance of showers. Waves
building to 3 to 5 feet occasionally to 7 feet, then subsiding to
2 to 4 feet.

$$

LSZ267-021615-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
406 AM EDT Sun Jun 2 2024

.EARLY THIS MORNING...Southwest winds 5 to 15 knots. Patchy fog.
Waves calm to 2 feet.
.TODAY...West winds 5 to 15 knots veering north late. Waves calm
to 2 feet.
.TONIGHT...Southeast winds 5 to 15 knots increasing to 10 to
20 knots late. Waves calm to 2 feet.
.MONDAY...Southeast winds 10 to 20 knots increasing to 15 to
25 knots in the afternoon, then diminishing to 10 to 20 knots
late. A chance of showers. A slight chance of thunderstorms 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. A chance of
showers and a slight chance of thunderstorms. Waves subsiding to
calm to 2 feet.
.TUESDAY...Southeast winds 10 to 20 knots. A chance of showers.
Waves calm to 2 feet.
.TUESDAY NIGHT...Southeast winds 10 to 20 knots. A chance of
showers through midnight. A chance of thunderstorms. Showers
likely after midnight. Waves building to 1 to 3 feet.
.WEDNESDAY...South winds 10 to 20 knots veering southwest. A
chance of showers and thunderstorms. Waves subsiding to calm to
2 feet.
.THURSDAY...West winds 10 to 20 knots. A chance of showers. Waves
building to 2 to 4 feet.

$$

LSZ261-021615-
MAFOR 0209/
Superior West 11500 19504 11500 11400 11300 11210 11220 12320. A
chance of showers overnight. Waves calm to 3 feet.

Superior North Central 11604 11500 12400 12310 12320. Waves calm
to 4 feet.

Superior South Central 11603 11800 12200 11210 12310 11320. Waves
calm to 3 feet.

Superior East 11510 11600 12700 11800 11200 12310. Waves 2 feet
or less.

$$

Rolfson

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

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