490
FZUS63 KMQT 050753
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
353 AM EDT Wed Jun 5 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...The cold front of a low currently over Manitoba is
extend troughing of 29.5 inches across Lake Superior this morning
through early this afternoon before the parent low pressure moves
into northern Ontario and extends 29.3 inch troughing over Lake
Superior Thursday morning. The troughing over Lake Superior
weakens to 29.6 inches by Friday as the low weakens to 29.4 inches
over southern James Bay. Weak troughing at 29.7 inches remains
over Lake Superior Saturday before weak ridging of at least 29.8
inches pushes over the lake Sunday as a high pressure drops into
the Canadian Prairies.


LSZ162-051600-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
353 AM EDT Wed Jun 5 2024 /253 AM CDT Wed Jun 5 2024/

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

$$

LSZ263-051600-
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-
353 AM EDT Wed Jun 5 2024

.EARLY THIS MORNING...Southeast winds 5 to 15 knots. Patchy fog.
Showers and a chance of thunderstorms. Waves 1 to 3 feet.
.TODAY...West winds 10 to 20 knots backing south late. Patchy fog
through early afternoon. Showers through early afternoon. A
chance of thunderstorms. A slight chance of showers by mid
afternoon. Waves subsiding to calm to 2 feet, then building to
1 to 3 feet.
.TONIGHT...Southwest winds 10 to 20 knots veering west after
midnight. A slight chance of thunderstorms through midnight. A
slight chance of rain showers. Waves building to 3 to 5 feet
occasionally to 7 feet.
.THURSDAY...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.
.THURSDAY NIGHT...West winds 15 to 25 knots diminishing to 10 to
20 knots after midnight. A slight chance of showers. Waves
subsiding to 2 to 4 feet.
.FRIDAY...West winds 15 to 25 knots. A chance of showers. Waves
building to 3 to 5 feet occasionally to 7 feet.
.FRIDAY NIGHT...West winds 10 to 20 knots. A chance of showers.
Waves subsiding to 1 to 3 feet.
.SATURDAY...West winds 10 to 20 knots veering northwest. A chance
of showers. Waves building to 2 to 4 feet, then 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.

$$

LSZ264-051600-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
353 AM EDT Wed Jun 5 2024

.EARLY THIS MORNING...Southeast winds 10 to 20 knots. Patchy fog.
A chance of showers and thunderstorms. Waves 2 to 4 feet.
.TODAY...Southeast winds 15 to 25 knots becoming west 10 to
20 knots in the afternoon, then becoming south 5 to 15 knots
late. Patchy fog. Showers through early afternoon. A chance of
thunderstorms. A chance of showers by mid afternoon. Waves
building to 3 to 5 feet occasionally to 7 feet, then subsiding to
2 to 4 feet.
.TONIGHT...South winds 5 to 15 knots veering southwest after
midnight, then becoming west 10 to 20 knots late. Patchy fog. A
slight chance of rain showers. Waves subsiding to 1 to 3 feet,
then building to 3 to 5 feet occasionally to 7 feet.
.THURSDAY...West winds 15 to 25 knots. A chance of rain showers.
Waves building to 3 to 6 feet occasionally to 8 feet.
.THURSDAY NIGHT...West winds 15 to 25 knots diminishing to 10 to
20 knots after midnight. A chance of showers. Waves subsiding to
3 to 5 feet occasionally to 7 feet.
.FRIDAY...West winds 15 to 25 knots. A chance of showers. Waves
3 to 5 feet occasionally to 7 feet.
.FRIDAY NIGHT...West winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. A chance of showers. Waves subsiding to
1 to 3 feet.
.SATURDAY...West winds 10 to 20 knots veering northwest. A chance
of showers. Waves building to 2 to 4 feet, then subsiding to 1 to
3 feet.
.SUNDAY...Northwest winds 10 to 20 knots becoming north 5 to
15 knots. Waves 1 to 3 feet.

$$

LSZ265-051600-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
353 AM EDT Wed Jun 5 2024

.EARLY THIS MORNING...Southeast winds 10 to 20 knots. A chance of
showers and thunderstorms. Waves 2 to 4 feet subsiding to 1 to
3 feet.
.TODAY...Southeast winds 15 to 25 knots becoming west 10 to
20 knots in the afternoon, then backing southeast late. Patchy
fog. 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 calm to 2 feet.
.TONIGHT...South winds 10 to 20 knots veering west after
midnight. A slight chance of thunderstorms through midnight. A
chance of showers. Waves building to 1 to 3 feet.
.THURSDAY...West winds 10 to 20 knots increasing to 20 to
30 knots. A chance of showers. Waves building to 3 to 5 feet
occasionally to 7 feet.
.THURSDAY NIGHT...West winds 20 to 30 knots. A chance of showers.
Waves subsiding to 2 to 4 feet, then building to 3 to 5 feet
occasionally to 7 feet.
.FRIDAY...West winds 20 to 30 knots. A chance of showers. Waves
subsiding to 1 to 3 feet.
.FRIDAY NIGHT...West winds 15 to 25 knots diminishing to 10 to
20 knots after midnight. A chance of showers. Waves subsiding to
calm to 2 feet.
.SATURDAY...West winds 15 to 25 knots diminishing to 10 to
20 knots. A chance of showers. Waves calm to 2 feet.
.SUNDAY...Northwest winds 10 to 20 knots veering north. Waves
building to 1 to 3 feet.

$$

LSZ266-051600-
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-
353 AM EDT Wed Jun 5 2024

.EARLY THIS MORNING...Southeast winds 10 to 20 knots. Patchy fog.
A slight chance of showers and thunderstorms. Waves 2 to 4 feet.
.TODAY...Southeast winds 15 to 25 knots veering west in the
afternoon, then diminishing to 10 to 20 knots late. Patchy fog.
Showers through early afternoon. A chance of thunderstorms. A
chance of showers by mid afternoon. Waves building to 3 to 5 feet
occasionally to 7 feet, then subsiding to 2 to 4 feet.
.TONIGHT...South winds 10 to 20 knots veering west late. Patchy
fog through midnight. A slight chance of thunderstorms through
midnight. A chance of rain showers. Waves subsiding to calm to
2 feet, then building to 1 to 3 feet.
.THURSDAY...West winds 10 to 20 knots increasing to 15 to
25 knots in the afternoon. A chance of rain showers. Waves
building to 3 to 6 feet occasionally to 8 feet.
.THURSDAY NIGHT...West winds 20 to 30 knots. A chance of showers.
Waves building to 4 to 7 feet occasionally to 9 feet.
.FRIDAY...West winds 20 to 30 knots diminishing to 15 to 25 knots
by mid afternoon. A chance of showers. Waves 4 to 7 feet
occasionally to 9 feet.
.FRIDAY NIGHT...Northwest winds 15 to 25 knots becoming west
10 to 20 knots after midnight. A chance of showers. Waves
subsiding to 2 to 4 feet.
.SATURDAY...West winds 10 to 20 knots veering northwest. 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.

$$

LSZ267-051600-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
353 AM EDT Wed Jun 5 2024

.EARLY THIS MORNING...Southeast winds 15 to 25 knots. Waves 1 to
3 feet building to 2 to 4 feet.
.TODAY...Southeast winds 15 to 25 knots becoming west 10 to
20 knots late. Patchy fog. A chance of showers through early
afternoon. A chance of thunderstorms. Showers by mid afternoon.
Waves subsiding to 1 to 3 feet.
.TONIGHT...South winds 10 to 20 knots veering southwest late.
Patchy fog. A slight chance of thunderstorms through midnight. A
chance of showers. Waves subsiding to calm to 2 feet.
.THURSDAY...West winds 10 to 20 knots increasing to 15 to
25 knots late. A chance of showers. Waves building to 3 to 5 feet
occasionally to 7 feet.
.THURSDAY NIGHT...West winds 15 to 25 knots. A chance of showers.
Waves building to 4 to 7 feet occasionally to 9 feet.
.FRIDAY...West winds 15 to 25 knots increasing to 20 to 30 knots
by mid afternoon. A chance of showers. Waves building to 5 to
8 feet occasionally to 10 feet.
.FRIDAY NIGHT...Northwest winds 15 to 25 knots becoming west
10 to 20 knots after midnight. A chance of showers. Waves
subsiding to 2 to 4 feet.
.SATURDAY...West winds 10 to 20 knots. A chance of showers. Waves
subsiding to 1 to 3 feet.
.SUNDAY...Northwest winds 10 to 20 knots veering north. A chance
of showers. Waves 1 to 3 feet.

$$

LSZ261-051600-
MAFOR 0509/
Superior West 11616 11626 11520 11420 11520 11630 12620. A chance
of thunderstorms this morning. Waves 1 to 3 feet today. Waves 2
to 4 feet tonight.

Superior North Central 11320 11336 11536 19534 11626 11510 11410
11510 11520. Waves 2 to 4 feet building to 3 to 5 feet today.
Waves 2 to 4 feet tonight.

Superior South Central 11320 11326 11526 11620 13410 11610. A
chance of thunderstorms this morning and this evening. Waves 1 to
3 feet.

Superior East 12320 11326 11526 11620 12410 11400. A chance of
thunderstorms today. Waves 2 to 4 feet today. Waves 1 to 3 feet
tonight.

$$

TAP

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