770
AXUS43 KMQT 200757
MISMQT

OPEN LAKE FORECAST FOR LAKE SUPERIOR FOR NOAA WEATHER RADIO
NATIONAL WEATHER SERVICE MARQUETTE MI
357 AM EDT Sun Apr 20 2025

LSZ162-201600-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
357 AM EDT Sun Apr 20 2025 /257 AM CDT Sun Apr 20 2025/

.EARLY THIS MORNING...East winds 5 to 15 knots. Waves calm to
2 feet.
.TODAY...Southeast winds 5 to 15 knots backing east in the
afternoon, then increasing to 10 to 20 knots late. Waves building
to 1 to 3 feet.
.TONIGHT...Northeast winds 10 to 20 knots veering east after
midnight, then becoming northeast 15 to 25 knots late. A slight
chance of rain through midnight, then rain, possibly mixed with
snow after midnight. Waves building to 2 to 4 feet.
.MONDAY...Northeast winds 20 to 30 knots backing north in the
afternoon, then diminishing to 10 to 20 knots late. Rain and
snow. Waves building to 4 to 7 feet occasionally to 9 feet, then
subsiding to 3 to 5 feet occasionally to 7 feet.
.MONDAY NIGHT...Northwest winds 5 to 15 knots. Waves subsiding to
calm to 2 feet.
$$

LSZ263-201600-
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-
357 AM EDT Sun Apr 20 2025

.EARLY THIS MORNING...South winds 5 to 15 knots. Waves calm to
2 feet.
.TODAY...South winds 5 to 15 knots backing east in the afternoon.
Waves building to 1 to 3 feet.
.TONIGHT...East winds 10 to 20 knots diminishing to 5 to 15 knots
after midnight, then increasing to 15 to 25 knots late. A chance
of rain through midnight, then rain, possibly mixed with snow
after midnight. Waves 1 to 3 feet.
.MONDAY...Northeast winds 20 to 30 knots becoming north 15 to
25 knots late. Rain and snow. Waves building to 4 to 8 feet
occasionally to 10 feet.
.MONDAY NIGHT...Northwest winds 15 to 25 knots diminishing to
10 to 20 knots after midnight. A slight chance of rain showers,
possibly mixed with snow through midnight. Waves subsiding to
1 to 3 feet.
.TUESDAY...North winds 5 to 15 knots veering east by mid
afternoon. Waves subsiding to calm to 2 feet.
$$

LSZ264-201600-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
357 AM EDT Sun Apr 20 2025

.EARLY THIS MORNING...South winds less than 10 knots. Waves calm
to 2 feet.
.TODAY...South winds 5 to 15 knots backing southeast in the
afternoon. Waves building to 1 to 3 feet.
.TONIGHT...Southeast winds 10 to 20 knots diminishing to 5 to
15 knots after midnight, then becoming east 10 to 20 knots late.
Rain, possibly mixed with snow after midnight. Waves building to
2 to 4 feet, then subsiding to 1 to 3 feet.
.MONDAY...East winds 15 to 25 knots becoming northeast 20 to
30 knots in the afternoon, then becoming north 15 to 25 knots
late. Rain and snow. Waves building to 4 to 8 feet occasionally
to 10 feet.
.MONDAY NIGHT...North winds 15 to 25 knots. A chance of rain
showers, possibly mixed with snow through midnight. Waves
subsiding to 2 to 4 feet.
$$

LSZ265-201600-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
357 AM EDT Sun Apr 20 2025

.EARLY THIS MORNING...South winds 5 to 15 knots. Waves calm to
2 feet.
.TODAY...South winds 5 to 15 knots becoming southeast 10 to
20 knots in the afternoon, then becoming east 15 to 25 knots
late. Waves building to 2 to 4 feet.
.TONIGHT...Southeast winds 10 to 20 knots becoming east 15 to
25 knots late. A chance of rain through midnight, then rain,
possibly mixed with snow after midnight. Waves subsiding to 1 to
3 feet, then building to 2 to 4 feet.
.MONDAY...East winds 20 to 30 knots backing north late. A slight
chance of snow through early afternoon. Rain. Snow by mid
afternoon. Waves building to 4 to 8 feet occasionally to 10 feet.
.MONDAY NIGHT...Northwest winds 20 to 30 knots diminishing to
15 to 25 knots after midnight. A chance of rain and snow showers.
Waves subsiding to 3 to 5 feet occasionally to 7 feet.
$$

LSZ266-201600-
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-
357 AM EDT Sun Apr 20 2025

.EARLY THIS MORNING...South winds 5 to 15 knots. Waves calm to
2 feet.
.TODAY...South winds 5 to 15 knots backing southeast in the
afternoon, then becoming east 10 to 20 knots late. Waves building
to 1 to 3 feet.
.TONIGHT...East winds 10 to 20 knots veering southeast after
midnight, then becoming east 15 to 25 knots late. A slight chance
of rain through midnight, then rain, possibly mixed with snow and
sleet after midnight. Waves building to 2 to 4 feet, then
subsiding to 1 to 3 feet.
.MONDAY...East winds 20 to 30 knots diminishing to 15 to 25 knots
in the afternoon, then becoming northeast 20 to 30 knots late.
Rain, possibly mixed with snow. Waves building to 4 to 8 feet
occasionally to 10 feet.
.MONDAY NIGHT...North winds 20 to 30 knots backing northwest
after midnight. A chance of rain and snow showers. Waves 4 to
7 feet occasionally to 9 feet.
$$

LSZ267-201600-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
357 AM EDT Sun Apr 20 2025

.EARLY THIS MORNING...West winds 5 to 15 knots. Waves calm to
2 feet.
.TODAY...South winds 5 to 15 knots backing east in the afternoon.
Waves calm to 2 feet.
.TONIGHT...Southeast winds 10 to 20 knots increasing to 15 to
25 knots after midnight, then becoming east 20 to 30 knots late.
A slight chance of rain through midnight, then rain, possibly
mixed with sleet after midnight. Waves building to 2 to 4 feet.
.MONDAY...East winds 20 to 30 knots diminishing to 15 to 25 knots
late. Rain. Waves building to 3 to 6 feet occasionally to 8 feet.
.MONDAY NIGHT...Northwest winds 15 to 25 knots increasing to
20 to 30 knots after midnight. Rain showers likely through
midnight. A chance of snow showers. A chance of rain showers
after midnight. Waves building to 4 to 7 feet occasionally to
9 feet.
$$