148
FZUS63 KMQT 160736
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
336 AM EDT Thu May 16 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 29.9 inch ridge over eastern Lake Superior continues
to slide eastward this morning while a weak 29.7 inch low
currently over central MN moves over western Lake Superior this
afternoon and evening. This feature lifts into Ontario early
Friday, and 29.8 inch high pressure settles over the western
Great Lakes through Friday into Saturday. A deeper 29.4 inch low
low pressure then moves into far northwest Ontario, sending a
29.7 inch trough across Lake Superior Saturday evening. Troughing
weakens and departs into the Hudson Bay Sunday, meanwhile 29.9
inch high pressure builds across the Ohio River Valley into
Monday.


LSZ162-161545-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
336 AM EDT Thu May 16 2024 /236 AM CDT Thu May 16 2024/

.EARLY THIS MORNING...East winds 15 to 25 knots. A chance of rain
showers. Waves 2 to 4 feet.
.TODAY...East winds 15 to 25 knots backing northeast late. Rain
showers likely through early afternoon, then a chance of rain
showers by mid afternoon. Waves 2 to 4 feet.
.TONIGHT...West winds 5 to 15 knots. A slight chance of rain
showers through midnight. Waves subsiding to calm to 2 feet.
.FRIDAY...West winds 5 to 15 knots backing south in the
afternoon, then becoming east 10 to 20 knots late. Waves building
to 1 to 3 feet.
.FRIDAY NIGHT...Northeast winds 10 to 20 knots. A slight chance
of showers and thunderstorms. Waves subsiding to calm to 2 feet.
.SATURDAY...East winds 10 to 20 knots increasing to 15 to
25 knots by mid afternoon. A chance of rain showers. Waves
building to 2 to 4 feet.
.SATURDAY NIGHT...West winds 15 to 25 knots becoming southwest
10 to 20 knots after midnight. A chance of showers and
thunderstorms through midnight. Waves 2 to 4 feet.
.SUNDAY...Southwest winds 10 to 20 knots backing south. A chance
of showers. Waves building to 3 to 5 feet occasionally to 7 feet,
then subsiding to calm to 2 feet.
.MONDAY...East winds 10 to 20 knots backing north. A chance of
showers. Waves calm to 2 feet.

$$

LSZ263-161545-
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-
336 AM EDT Thu May 16 2024

.EARLY THIS MORNING...East winds 5 to 15 knots. A slight chance
of rain showers. Waves 1 to 3 feet.
.TODAY...East winds 5 to 15 knots increasing to 10 to 20 knots in
the afternoon. A chance of rain showers. Waves building to 2 to
4 feet.
.TONIGHT...South winds 10 to 20 knots becoming west 5 to 15 knots
after midnight. A chance of rain showers. Waves subsiding to calm
to 2 feet.
.FRIDAY...Southwest winds 5 to 15 knots backing east late. Waves
calm to 2 feet.
.FRIDAY NIGHT...East winds 5 to 15 knots. A slight chance of rain
showers. Waves calm to 2 feet.
.SATURDAY...Southeast winds 5 to 15 knots increasing to 10 to
20 knots by mid afternoon. A chance of rain showers by mid
afternoon. Waves building to 1 to 3 feet.
.SATURDAY NIGHT...Southwest winds 10 to 20 knots. A chance of
showers and thunderstorms through midnight. Waves building to
2 to 4 feet.
.SUNDAY...Southwest winds 10 to 20 knots becoming south 5 to
15 knots. Waves building to 3 to 5 feet occasionally to 7 feet,
then subsiding to calm to 2 feet.
.MONDAY...Southeast winds 5 to 15 knots backing north. A chance
of showers. Waves calm to 2 feet.

$$

LSZ264-161545-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
336 AM EDT Thu May 16 2024

.EARLY THIS MORNING...East winds 5 to 15 knots. Waves calm to
2 feet.
.TODAY...East winds 5 to 15 knots becoming southeast 10 to
20 knots in the afternoon. A chance of rain showers. Waves
building to 2 to 4 feet.
.TONIGHT...Southeast winds 10 to 20 knots becoming south 5 to
15 knots after midnight, then veering southwest late. A chance of
rain showers. Waves building to 3 to 5 feet occasionally to
7 feet, then subsiding to 1 to 3 feet.
.FRIDAY...Southwest winds 5 to 15 knots backing south late. Waves
subsiding to calm to 2 feet.
.FRIDAY NIGHT...Southeast winds 5 to 15 knots. Waves calm to
2 feet.
.SATURDAY...Southeast winds 5 to 15 knots increasing to 10 to
20 knots by mid afternoon. Waves building to 1 to 3 feet.
.SATURDAY NIGHT...South winds 10 to 20 knots veering southwest
after midnight. A chance of showers through midnight. Waves
building to 2 to 4 feet.
.SUNDAY...Southwest winds 10 to 20 knots becoming south 5 to
15 knots. Waves building to 3 to 5 feet occasionally to 7 feet,
then subsiding to calm to 2 feet.
.MONDAY...Southeast winds 5 to 15 knots veering south. A chance
of showers. Waves calm to 2 feet.

$$

LSZ265-161545-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
336 AM EDT Thu May 16 2024

.EARLY THIS MORNING...Southeast winds 5 to 15 knots. Waves calm
to 2 feet.
.TODAY...Southeast winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon. A chance of rain showers. Waves
building to 2 to 4 feet.
.TONIGHT...Southeast winds 10 to 20 knots becoming south 5 to
15 knots after midnight, then veering southwest late. A chance of
rain showers. Waves subsiding to calm to 2 feet.
.FRIDAY...Southwest winds 5 to 15 knots backing southeast in the
afternoon, then becoming east 10 to 20 knots late. Waves calm to
2 feet.
.FRIDAY NIGHT...Southeast winds 5 to 15 knots increasing to 10 to
20 knots after midnight. Waves calm to 2 feet.
.SATURDAY...Southeast winds 10 to 20 knots increasing to 15 to
25 knots by mid afternoon. Waves calm to 2 feet.
.SATURDAY NIGHT...South winds 15 to 25 knots becoming west 10 to
20 knots after midnight. A chance of showers. Waves calm to
2 feet.
.SUNDAY...West winds 10 to 20 knots becoming south 5 to 15 knots.
Waves calm to 2 feet.
.MONDAY...Southeast winds 10 to 20 knots becoming south 5 to
15 knots. A chance of showers. Waves calm to 2 feet.

$$

LSZ266-161545-
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-
336 AM EDT Thu May 16 2024

.EARLY THIS MORNING...East winds 5 to 15 knots. Waves calm to
2 feet.
.TODAY...Southeast winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon. A chance of rain showers. Waves
building to 2 to 4 feet.
.TONIGHT...Southeast winds 10 to 20 knots becoming south 5 to
15 knots after midnight. A slight chance of thunderstorms through
midnight. A chance of rain showers. Waves subsiding to 1 to
3 feet.
.FRIDAY...Southwest winds 5 to 15 knots backing east late. Waves
subsiding to calm to 2 feet.
.FRIDAY NIGHT...Southeast winds 5 to 15 knots increasing to 10 to
20 knots after midnight. Waves calm to 2 feet.
.SATURDAY...Southeast winds 10 to 20 knots increasing to 15 to
25 knots by mid afternoon. Waves building to 1 to 3 feet.
.SATURDAY NIGHT...South winds 10 to 20 knots veering west after
midnight. A chance of showers. Waves building to 2 to 4 feet.
.SUNDAY...West winds 10 to 20 knots becoming south 5 to 15 knots.
Waves subsiding to calm to 2 feet.
.MONDAY...Southeast winds 10 to 20 knots becoming south 5 to
15 knots. A chance of showers. Waves calm to 2 feet.

$$

LSZ267-161545-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
336 AM EDT Thu May 16 2024

.EARLY THIS MORNING...East winds 5 to 15 knots. Waves calm to
2 feet.
.TODAY...Southeast winds 10 to 20 knots. A slight chance of rain
showers by mid afternoon. Waves building to 1 to 3 feet.
.TONIGHT...Southeast winds 10 to 20 knots. A chance of rain
showers and a slight chance of thunderstorms. Waves subsiding to
calm to 2 feet.
.FRIDAY...West winds 5 to 15 knots backing east late. A slight
chance of showers through early afternoon. Waves calm to 2 feet.
.FRIDAY NIGHT...Southeast winds 5 to 15 knots. Waves calm to
2 feet.
.SATURDAY...Southeast winds 10 to 20 knots. Waves calm to 2 feet.
.SATURDAY NIGHT...South winds 10 to 20 knots veering southwest
after midnight. A chance of showers. Waves calm to 2 feet.
.SUNDAY...West winds 10 to 20 knots becoming southeast 5 to
15 knots. Waves calm to 2 feet.
.MONDAY...Southeast winds 10 to 20 knots. A chance of showers.
Waves calm to 2 feet.

$$

LSZ261-161545-
MAFOR 1609/
Superior West 11220 13226 11220 13610. Waves 2 to 4 feet today.
Waves 2 to 4 feet subsiding to 1 to 2 feet tonight.

Superior North Central 11300 11310 14320 11420 11410. A chance of
rain showers this afternoon. A chance of showers tonight. Waves 2
feet or less building to 2 to 4 feet today. Waves 3 to 5 feet
subsiding to 2 to 4 feet tonight.

Superior South Central 11300 12310 13320 11410 11400. A chance of
rain showers this afternoon. A chance of showers this evening.
Waves 1 to 3 feet today. Waves 2 to 4 feet subsiding to 1 to 3
feet tonight.

Superior East 11210 15310 11310. A chance of showers tonight.
Waves 1 to 3 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