629
FZUS63 KMQT 281403
GLFLS

Open Lake Forecast for Lake Superior
National Weather Service Marquette MI
1003 AM EDT Sun Apr 28 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...As 30.5 inch high pressure builds over northern
Ontario today, a 29.6 inch low pressure will lift northeast from
Kansas to Iowa. This low will continue to track northeast,
crossing western Lake Superior late Monday afternoon and evening.
As the low weakens to 29.7 inches while moving over northern
Ontario late Monday night, a weak 29.9 inch ridge will shift east
across the Mississippi Valley. On Tuesday, the ridge will move
toward the Appalachians as the next low pressure of 29.6 inches
tracks from the Dakotas to northern Minnesota. This low will pass
just north of Lake Superior on Wednesday. In its wake, a 29.9 inch
ridge will shift east to the western Great Lakes for Wednesday
evening. Overnight Wednesday through Thursday, a 29.4 inch
Colorado Low will weaken to 29.6 inches as it lifts to the Upper
Midwest.

LSZ162-282215-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
1003 AM EDT Sun Apr 28 2024 /903 AM CDT Sun Apr 28 2024/

...GALE WARNING IN EFFECT FROM 2 PM EDT /1 PM CDT/ THIS AFTERNOON
THROUGH MONDAY AFTERNOON...

.REST OF TODAY...Northeast winds 20 to 30 knots increasing to
gales to 35 knots in the afternoon, then veering east late. A
slight chance of rain showers by mid afternoon. Waves 3 to 6 feet
occasionally to 8 feet building to 8 to 11 feet occasionally to
14 feet.
.TONIGHT...East gales to 40 knots. A chance of rain showers
through midnight, then rain showers after midnight. Waves
building to 11 to 15 feet occasionally to 19 feet.
.MONDAY...Northeast gales to 40 knots diminishing to 20 to
30 knots late. Rain showers. Waves subsiding to 6 to 9 feet
occasionally to 11 feet.
.MONDAY NIGHT...West winds 10 to 20 knots. A chance of rain
showers through midnight. Waves subsiding to 1 to 3 feet.
.TUESDAY...West winds 10 to 20 knots becoming southwest 5 to
15 knots by mid afternoon. Waves subsiding to calm to 2 feet.
.TUESDAY NIGHT...East winds 10 to 20 knots becoming southwest
5 to 15 knots after midnight. Rain showers. Waves building to
1 to 3 feet, then subsiding to calm to 2 feet.
.WEDNESDAY...Southwest winds 15 to 25 knots diminishing to 10 to
20 knots. Waves subsiding to calm to 2 feet.
.THURSDAY...Northeast winds 10 to 20 knots becoming north 15 to
25 knots. A chance of showers. Waves building to 1 to 3 feet.

$$

LSZ263-282215-
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-
1003 AM EDT Sun Apr 28 2024

...GALE WARNING IN EFFECT FROM THIS EVENING THROUGH MONDAY
AFTERNOON...

.REST OF TODAY...Northeast winds 15 to 25 knots increasing to
20 to 30 knots in the afternoon. Waves 3 to 6 feet occasionally
to 8 feet building to 7 to 10 feet occasionally to 13 feet.
.TONIGHT...East gales to 40 knots. A chance of rain showers
through midnight, then rain showers after midnight. Waves
subsiding to 6 to 9 feet occasionally to 11 feet, then building
to 10 to 14 feet occasionally to 18 feet.
.MONDAY...East gales to 40 knots diminishing to 20 to 30 knots
late. Rain showers. Waves subsiding to 7 to 10 feet occasionally
to 13 feet.
.MONDAY NIGHT...West winds 10 to 20 knots. A chance of rain
showers through midnight. Waves subsiding to 2 to 4 feet.
.TUESDAY...West winds 10 to 20 knots becoming southwest 5 to
15 knots by mid afternoon. Waves subsiding to calm to 2 feet.
.TUESDAY NIGHT...East winds 5 to 15 knots becoming southwest
10 to 20 knots after midnight. Rain showers. Waves building to
3 to 5 feet occasionally to 7 feet.
.WEDNESDAY...Southwest winds 15 to 25 knots diminishing to 10 to
20 knots. Waves subsiding to calm to 2 feet.
.THURSDAY...Northeast winds 10 to 20 knots backing north. A
chance of rain showers. Waves building to 1 to 3 feet.

$$

LSZ264-282215-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
1003 AM EDT Sun Apr 28 2024

...GALE WARNING IN EFFECT FROM THIS EVENING THROUGH MONDAY
AFTERNOON...

.REST OF TODAY...Northeast winds 15 to 25 knots. Waves 3 to
6 feet occasionally to 8 feet.
.TONIGHT...Northeast gales to 35 knots becoming east gales to
40 knots after midnight. A chance of rain showers. Waves building
to 10 to 14 feet occasionally to 18 feet.
.MONDAY...East gales to 40 knots diminishing to 20 to 30 knots
late. Rain showers. Waves subsiding to 7 to 10 feet occasionally
to 13 feet.
.MONDAY NIGHT...East winds 15 to 25 knots becoming west 10 to
20 knots after midnight. A chance of rain showers through
midnight. Waves subsiding to 3 to 5 feet occasionally to 7 feet.
.TUESDAY...West winds 10 to 20 knots becoming southwest 5 to
15 knots by mid afternoon. Waves subsiding to 1 to 3 feet.
.TUESDAY NIGHT...East winds 5 to 15 knots becoming southeast
10 to 20 knots after midnight. A chance of rain showers through
midnight, then rain showers likely after midnight. Waves
subsiding to calm to 2 feet, then building to 3 to 5 feet
occasionally to 7 feet.
.WEDNESDAY...Southwest 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 1 to 3 feet.
.THURSDAY...East winds 5 to 15 knots becoming north 10 to
20 knots. A chance of rain showers. Waves subsiding to calm to
2 feet, then building to 1 to 3 feet.

$$

LSZ265-282215-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
1003 AM EDT Sun Apr 28 2024

...GALE WARNING IN EFFECT FROM THIS EVENING THROUGH MONDAY
AFTERNOON...

.REST OF TODAY...Northeast winds 15 to 25 knots. Waves 3 to
6 feet occasionally to 8 feet.
.TONIGHT...East winds 20 to 30 knots increasing to gales to
35 knots. A chance of rain showers through midnight, then rain
showers after midnight. Waves building to 9 to 12 feet
occasionally to 15 feet.
.MONDAY...East gales to 35 knots diminishing to 15 to 25 knots.
Rain showers through early afternoon, then a chance of rain
showers by mid afternoon. Waves subsiding to 5 to 8 feet
occasionally to 10 feet.
.MONDAY NIGHT...Southeast winds 10 to 20 knots veering west after
midnight. A chance of rain showers through midnight. Waves
subsiding to 2 to 4 feet.
.TUESDAY...West winds 10 to 20 knots becoming east 5 to 15 knots
by mid afternoon. Waves subsiding to calm to 2 feet.
.TUESDAY NIGHT...East winds 10 to 20 knots veering south after
midnight. A chance of rain showers through midnight, then rain
showers likely after midnight. Waves building to 1 to 3 feet.
.WEDNESDAY...West winds 15 to 25 knots becoming southwest 10 to
20 knots. Waves subsiding to calm to 2 feet.
.THURSDAY...Northeast winds 10 to 20 knots backing north. A
chance of rain showers. Waves calm to 2 feet.

$$

LSZ266-282215-
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-
1003 AM EDT Sun Apr 28 2024

...GALE WARNING IN EFFECT FROM THIS EVENING THROUGH MONDAY
AFTERNOON...

.REST OF TODAY...Northeast winds 15 to 25 knots. Waves 3 to
6 feet occasionally to 8 feet.
.TONIGHT...East winds 20 to 30 knots increasing to gales to
35 knots. A chance of rain showers. Waves building to 9 to 12
feet occasionally to 15 feet.
.MONDAY...East gales to 40 knots diminishing to 20 to 30 knots
late. Rain showers through early afternoon, then a chance of rain
showers by mid afternoon. Waves subsiding to 6 to 9 feet
occasionally to 11 feet.
.MONDAY NIGHT...Southeast winds 20 to 30 knots becoming west
10 to 20 knots after midnight. A chance of rain showers. Waves
subsiding to 3 to 5 feet occasionally to 7 feet.
.TUESDAY...West winds 10 to 20 knots diminishing to 5 to 15 knots
by mid afternoon. Waves subsiding to 1 to 3 feet.
.TUESDAY NIGHT...Southeast winds 10 to 20 knots. Rain showers
likely after midnight. Waves subsiding to calm to 2 feet, then
building to 3 to 5 feet occasionally to 7 feet.
.WEDNESDAY...Southwest winds 15 to 25 knots becoming south 10 to
20 knots. Waves building to 3 to 6 feet occasionally to 8 feet,
then subsiding to 1 to 3 feet.
.THURSDAY...Northeast winds 10 to 20 knots backing north. A
chance of rain showers. Waves subsiding to calm to 2 feet, then
building to 1 to 3 feet.

$$

LSZ267-282215-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
1003 AM EDT Sun Apr 28 2024

.REST OF TODAY...Northeast winds 10 to 20 knots increasing to
15 to 25 knots late. Waves 3 to 5 feet occasionally to 7 feet.
.TONIGHT...East winds 15 to 25 knots increasing 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 4 to 7 feet occasionally to 9 feet.
.MONDAY...East winds to 30 knots with a few gale force gusts to
35 knots possible becoming southeast 20 to 30 knots late. Rain
showers. Waves building to 6 to 9 feet occasionally to 11 feet,
then subsiding to 3 to 6 feet occasionally to 8 feet.
.MONDAY NIGHT...Southeast winds 15 to 25 knots becoming southwest
10 to 20 knots after midnight. A chance of rain showers. Waves
subsiding to 1 to 3 feet.
.TUESDAY...West winds 10 to 20 knots diminishing to 5 to 15 knots
by mid afternoon. Waves building to 2 to 4 feet, then subsiding
to calm to 2 feet.
.TUESDAY NIGHT...Southeast winds 10 to 20 knots. A chance of rain
showers after midnight. Waves building to 2 to 4 feet.
.WEDNESDAY...Southwest winds 15 to 25 knots becoming south 10 to
20 knots. A chance of showers. Waves subsiding to calm to 2 feet.
.THURSDAY...East winds 10 to 20 knots backing northeast. A chance
of rain showers. Waves calm to 2 feet.

$$
LSZ261-282215-
MAFOR 2815/
Superior West...GALE WARNING IN EFFECT...13140 12250 13256. Waves
5 to 8 feet building to 6 to 9 feet this afternoon. Waves 7 to 11
feet building to 10 to 14 feet tonight. Waves 11 to 15 feet
Monday morning.

Superior North Central...GALE WARNING IN EFFECT...13130 11140
12250 12256. Waves 3 to 6 feet this afternoon. Waves 3 to 6 feet
building to 9 to 12 feet tonight. Waves 10 to 13 feet Monday
morning.

Superior South Central...GALE WARNING IN EFFECT...11130 11120
11130 11140 11250 13256. Waves 3 to 6 feet this afternoon. Waves
5 to 8 feet building to 8 to 11 feet tonight. Waves 9 to 12 feet
Monday morning.

Superior East...GALE WARNING IN EFFECT...12130 12140 12240 12256.
Waves 3 to 6 feet this afternoon. Waves 3 to 6 feet building to 5
to 8 feet tonight. Waves 6 to 9 feet Monday morning.

$$

Voss

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

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