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000
FZUS63 KMQT 260753
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
353 AM EDT Fri Apr 26 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...Broad high pressure of 30.4 inches over Quebec and the
Lower Great Lakes will build to 30.5 inches as it shifts to New
England and the Maritime Provinces today. Meanwhile, low pressure of
29.4 inches over western Kansas will deepen to 29.2 inches today as
it lifts to eastern Nebraska. This low will continue to track
northeast, weakening to 29.6 inches by the time it reaches northeast
Lake Superior on Saturday evening. On Sunday, 30.5 inch high
pressure will build over northern Ontario as a 29.6 inch low
pressure lifts northeast across the central Plains. This low will
continue to track northeast, crossing western Lake Superior during
Monday. As the low moves over northern Ontario Monday night, a weak
30.0 inch ridge will shift east across the Mississippi Valley. On
Tuesday, the ridge will shift toward the Appalachians as the next
low pressure of 29.7 inches tracks from North Dakota to far northern
Minnesota.

LSZ162-261600-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
353 AM EDT Fri Apr 26 2024 /253 AM CDT Fri Apr 26 2024/

...GALE WATCH IN EFFECT FROM SUNDAY MORNING THROUGH MONDAY
MORNING...

.EARLY THIS MORNING...Southeast winds 5 to 15 knots. Waves 1 to
3 feet.
.TODAY...Southeast winds 10 to 20 knots backing east in the
afternoon, then increasing to 15 to 25 knots late. A chance of
rain showers by mid afternoon. Waves building to 2 to 4 feet.
.TONIGHT...East winds 10 to 20 knots increasing to 20 to 30 knots
after midnight, then backing northeast late. Rain showers and a
slight chance of thunderstorms. Waves building to 3 to 6 feet
occasionally to 8 feet.
.SATURDAY...Northeast winds 15 to 25 knots diminishing to 10 to
20 knots in the afternoon, then backing northwest late. Rain
showers and a slight chance of thunderstorms. Waves subsiding to
1 to 3 feet.
.SATURDAY NIGHT...North winds 10 to 20 knots becoming northeast
15 to 25 knots after midnight. A slight chance of thunderstorms
through midnight. A chance of rain showers. Waves building to
3 to 5 feet occasionally to 7 feet.
.SUNDAY...Northeast gales to 40 knots. A chance of rain showers
through early afternoon, then rain showers likely by mid
afternoon. Waves building to 10 to 14 feet occasionally to
18 feet.
.SUNDAY NIGHT...Northeast gales to 45 knots. Rain showers. Waves
subsiding to 8 to 11 feet occasionally to 14 feet.
.MONDAY...Northeast winds 20 to 30 knots becoming west 15 to
25 knots. Rain showers. Waves subsiding to 1 to 3 feet.
.TUESDAY...Southwest winds 10 to 20 knots becoming west 15 to
25 knots. A chance of rain showers. Waves subsiding to calm to
2 feet, then building to 1 to 3 feet.

$$

LSZ263-261600-
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 Fri Apr 26 2024

...GALE WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH MONDAY
MORNING...

.EARLY THIS MORNING...South winds 10 to 20 knots. Waves 2 to
4 feet.
.TODAY...Southeast winds 10 to 20 knots increasing to 15 to
25 knots in the afternoon. Waves subsiding to 1 to 3 feet, then
building to 4 to 7 feet occasionally to 9 feet.
.TONIGHT...Southeast winds 15 to 25 knots backing east after
midnight, then diminishing to 10 to 20 knots late. Rain showers
likely and a slight chance of thunderstorms. Waves subsiding to
3 to 6 feet occasionally to 8 feet, then building to 5 to 8 feet
occasionally to 10 feet.
.SATURDAY...East winds 10 to 20 knots backing northeast in the
afternoon, then backing northwest late. Rain showers likely
through early afternoon. A slight chance of thunderstorms. A
chance of rain showers by mid afternoon. Waves subsiding to 2 to
4 feet.
.SATURDAY NIGHT...North winds 15 to 25 knots veering northeast
after midnight. A slight chance of thunderstorms through
midnight. A slight chance of rain showers. Waves building to 3 to
6 feet occasionally to 8 feet.
.SUNDAY...Northeast winds 20 to 30 knots increasing to gales to
35 knots by mid afternoon. Rain showers likely by mid afternoon.
Waves building to 7 to 11 feet occasionally to 14 feet.
.SUNDAY NIGHT...East gales to 35 knots. Rain showers. Waves
subsiding to 6 to 9 feet occasionally to 11 feet, then building
to 7 to 10 feet occasionally to 13 feet.
.MONDAY...East winds 20 to 30 knots becoming west 15 to 25 knots.
Rain showers. Waves subsiding to 2 to 4 feet.
.TUESDAY...Southwest winds 10 to 20 knots veering west. A chance
of rain showers. Waves subsiding to calm to 2 feet, then building
to 2 to 4 feet.

$$

LSZ264-261600-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
353 AM EDT Fri Apr 26 2024

...GALE WATCH IN EFFECT FROM SUNDAY EVENING THROUGH MONDAY
MORNING...

.EARLY THIS MORNING...South winds 10 to 20 knots. Waves 3 to
5 feet occasionally to 7 feet.
.TODAY...Southeast winds 10 to 20 knots increasing to 20 to
30 knots. Waves subsiding to 2 to 4 feet, then building to 4 to
7 feet occasionally to 9 feet.
.TONIGHT...Southeast winds 20 to 30 knots. Rain showers. A slight
chance of thunderstorms after midnight. Waves building to 6 to
9 feet occasionally to 11 feet.
.SATURDAY...Southeast winds 15 to 25 knots diminishing to 10 to
20 knots in the afternoon, then backing north late. Rain showers
likely and a slight chance of thunderstorms. Waves subsiding to
3 to 5 feet occasionally to 7 feet.
.SATURDAY NIGHT...North winds 15 to 25 knots increasing to 20 to
30 knots after midnight. A chance of rain showers and a slight
chance of thunderstorms through midnight. Waves building to 3 to
6 feet occasionally to 8 feet.
.SUNDAY...Northeast winds 20 to 30 knots veering east by mid
afternoon. A chance of rain showers. Waves subsiding to 3 to
5 feet occasionally to 7 feet.
.SUNDAY NIGHT...East gales to 35 knots. Rain showers. Waves
building to 7 to 10 feet occasionally to 13 feet.
.MONDAY...East gales to 35 knots becoming west 15 to 25 knots.
Rain showers. Waves subsiding to 2 to 4 feet.
.TUESDAY...Southwest winds 10 to 20 knots backing south. A chance
of rain showers. Waves subsiding to calm to 2 feet, then building
to 1 to 3 feet.

$$

LSZ265-261600-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
353 AM EDT Fri Apr 26 2024

...GALE WATCH IN EFFECT FROM SUNDAY EVENING THROUGH MONDAY
MORNING...

.EARLY THIS MORNING...Southeast winds 10 to 20 knots. Waves 2 to
4 feet.
.TODAY...Southeast winds 10 to 20 knots increasing to 20 to
30 knots. Waves building to 3 to 6 feet occasionally to 8 feet.
.TONIGHT...Southeast winds 20 to 30 knots diminishing to 15 to
25 knots late. A chance of rain showers. A slight chance of
thunderstorms after midnight. Waves building to 4 to 7 feet
occasionally to 9 feet, then subsiding to 3 to 6 feet
occasionally to 8 feet.
.SATURDAY...Southeast winds 10 to 20 knots veering southwest
late. A chance of showers and thunderstorms. Waves subsiding to
2 to 4 feet.
.SATURDAY NIGHT...Northwest winds 15 to 25 knots veering north
after midnight. A slight chance of showers and thunderstorms
through midnight. Waves subsiding to 1 to 3 feet, then building
to 3 to 5 feet occasionally to 7 feet.
.SUNDAY...Northeast winds 15 to 25 knots veering east by mid
afternoon. Rain showers likely by mid afternoon. Waves subsiding
to 2 to 4 feet.
.SUNDAY NIGHT...East gales to 35 knots. Rain showers. Waves
building to 5 to 8 feet occasionally to 10 feet.
.MONDAY...Southeast winds 15 to 25 knots veering west. Rain
showers. Waves subsiding to calm to 2 feet.
.TUESDAY...West winds 15 to 25 knots backing southwest. A chance
of rain showers. Waves building to 1 to 3 feet.

$$

LSZ266-261600-
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 Fri Apr 26 2024

...GALE WATCH IN EFFECT FROM SUNDAY EVENING THROUGH MONDAY
MORNING...

.EARLY THIS MORNING...South winds 15 to 25 knots. Waves 3 to
5 feet occasionally to 7 feet.
.TODAY...South winds 15 to 25 knots backing southeast in the
afternoon, then increasing to 20 to 30 knots late. Waves
subsiding to 2 to 4 feet, then building to 4 to 7 feet
occasionally to 9 feet.
.TONIGHT...Southeast winds 20 to 30 knots. A chance of rain
showers through midnight, then rain showers likely and a slight
chance of thunderstorms after midnight. Waves building to 6 to
9 feet occasionally to 11 feet.
.SATURDAY...Southeast winds 20 to 30 knots becoming south 15 to
25 knots in the afternoon. A chance of showers and thunderstorms.
Waves subsiding to 3 to 5 feet occasionally to 7 feet.
.SATURDAY NIGHT...Northwest winds 15 to 25 knots veering north
after midnight. A chance of rain showers and a slight chance of
thunderstorms through midnight. Waves building to 3 to 6 feet
occasionally to 8 feet.
.SUNDAY...Northeast winds 15 to 25 knots. Rain showers likely by
mid afternoon. Waves subsiding to 2 to 4 feet, then building to
3 to 5 feet occasionally to 7 feet.
.SUNDAY NIGHT...East gales to 35 knots. Rain showers. Waves
building to 6 to 9 feet occasionally to 11 feet.
.MONDAY...Southeast gales to 35 knots becoming west 15 to
25 knots. Rain showers. A chance of rain showers. Waves subsiding
to 2 to 4 feet.
.TUESDAY...Southwest winds 10 to 20 knots becoming south 15 to
25 knots. A chance of rain showers. Waves subsiding to calm to
2 feet, then building to 1 to 3 feet.

$$

LSZ267-261600-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
353 AM EDT Fri Apr 26 2024

.EARLY THIS MORNING...South winds 15 to 25 knots. Waves 2 to
4 feet.
.TODAY...Southeast winds 15 to 25 knots increasing to 20 to
30 knots late. Waves building to 4 to 7 feet occasionally to
9 feet.
.TONIGHT...Southeast winds to 30 knots with a few gale force
gusts to 35 knots possible. A chance of rain showers through
midnight, then rain showers likely after midnight. Waves building
to 5 to 8 feet occasionally to 10 feet, then subsiding to 3 to 6
feet occasionally to 8 feet.
.SATURDAY...Southeast winds to 30 knots with a few gale force
gusts to 35 knots possible becoming south 20 to 30 knots in the
afternoon, then diminishing to 15 to 25 knots late. A chance of
showers and thunderstorms. Waves subsiding to 3 to 5 feet
occasionally to 7 feet.
.SATURDAY NIGHT...West winds 15 to 25 knots becoming north 10 to
20 knots after midnight. A chance of showers and thunderstorms.
Waves subsiding to 2 to 4 feet, then building to 3 to 5 feet
occasionally to 7 feet.
.SUNDAY...Northeast winds 15 to 25 knots. A chance of rain
showers. Waves subsiding to 2 to 4 feet.
.SUNDAY NIGHT...East winds 20 to 30 knots. Rain showers. Waves
building to 4 to 7 feet occasionally to 9 feet.
.MONDAY...Southeast winds 20 to 30 knots becoming southwest 10 to
20 knots. Rain showers. Waves subsiding to calm to 2 feet.
.TUESDAY...West winds 10 to 20 knots becoming south 15 to
25 knots. A chance of rain showers. Waves building to 1 to
3 feet, then subsiding to calm to 2 feet.

$$

LSZ261-261600-
MAFOR 2609/
Superior West 12320 11210 12220 13236. Waves 1 to 5 feet.

Superior North Central 11430 12330 13340 12346. Waves 3 to 7 feet
today building to 6 to 9 feet tonight.

Superior South Central 11430 11320 11330 12340 11330 11336 11346.
Waves 2 to 5 feet today building to 4 to 7 feet tonight.

Superior East 11420 12320 11330 12340 11330 11346. Waves 2 to 6
feet today and 5 to 9 feet tonight.

$$

Rolfson

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

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