National Weather Service Weather Forecast Office

• Home
• Site Map
• News
• Organization
• Search for: NWS All NOAA 

000
AXUS43 KMQT 220148
MISMQT

OPEN LAKE FORECAST FOR LAKE SUPERIOR FOR NOAA WEATHER RADIO
NATIONAL WEATHER SERVICE MARQUETTE MI
948 PM EDT Sun Apr 21 2024

LSZ162-221000-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
948 PM EDT Sun Apr 21 2024 /848 PM CDT Sun Apr 21 2024/

.REST OF TONIGHT...Southwest winds 5 to 15 knots. Waves calm to
2 feet.
.MONDAY...Southwest winds 10 to 20 knots diminishing to 5 to
15 knots in the afternoon. A chance of rain showers by mid
afternoon. Waves building to 1 to 3 feet.
.MONDAY NIGHT...Southwest winds 10 to 20 knots diminishing to
5 to 15 knots after midnight, then becoming west 10 to 20 knots
late. Rain showers likely through midnight, then a chance of rain
showers and a slight chance of thunderstorms after midnight.
Waves subsiding to calm to 2 feet.
.TUESDAY...Northeast winds 20 to 30 knots. Rain showers likely
through early afternoon. A chance of snow showers. A slight
chance of rain showers by mid afternoon. Waves building to 4 to
8 feet occasionally to 10 feet.
$$

LSZ263-221000-
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-
948 PM EDT Sun Apr 21 2024

...GALE WATCH IN EFFECT FROM TUESDAY MORNING THROUGH TUESDAY
AFTERNOON...

.REST OF TONIGHT...Southwest winds 5 to 15 knots. Waves calm to
2 feet building to 1 to 3 feet.
.MONDAY...Southwest winds 10 to 20 knots. A chance of rain
showers by mid afternoon. Waves 1 to 3 feet.
.MONDAY NIGHT...Southwest winds 10 to 20 knots diminishing to
5 to 15 knots after midnight, then becoming west 15 to 25 knots
late. Rain showers likely through midnight, then a chance of rain
showers, possibly mixed with snow after midnight. Waves building
to 3 to 6 feet occasionally to 8 feet.
.TUESDAY...Northeast gales to 35 knots. A chance of snow showers,
possibly mixed with rain. Waves building to 8 to 11 feet
occasionally to 14 feet, then subsiding to 6 to 9 feet
occasionally to 11 feet.
$$

LSZ264-221000-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
948 PM EDT Sun Apr 21 2024

...GALE WATCH IN EFFECT FROM TUESDAY MORNING THROUGH TUESDAY
AFTERNOON...

.REST OF TONIGHT...Southeast winds 5 to 15 knots veering
southwest late. Waves calm to 2 feet building to 1 to 3 feet.
.MONDAY...Southwest winds 10 to 20 knots diminishing to 5 to
15 knots late. A slight chance of rain showers by mid afternoon.
Waves building to 2 to 4 feet, then subsiding to 1 to 3 feet.
.MONDAY NIGHT...Southwest winds 5 to 15 knots becoming west 15 to
25 knots late. Rain showers. A slight chance of snow showers
after midnight. Waves building to 3 to 6 feet occasionally to
8 feet.
.TUESDAY...North gales to 35 knots. A chance of rain showers
through early afternoon. A chance of snow showers. Waves building
to 9 to 12 feet occasionally to 15 feet, then subsiding to 6 to
9 feet occasionally to 11 feet.
$$

LSZ265-221000-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
948 PM EDT Sun Apr 21 2024

.REST OF TONIGHT...Southeast winds 5 to 15 knots veering south
after midnight, then becoming southwest 10 to 20 knots late.
Waves calm to 2 feet.
.MONDAY...Southwest winds 10 to 20 knots backing south late.
Waves calm to 2 feet.
.MONDAY NIGHT...Southwest winds 10 to 20 knots veering west late.
Rain showers. Waves calm to 2 feet.
.TUESDAY...North winds 20 to 30 knots. Rain and snow showers
likely through early afternoon, then a chance of snow showers by
mid afternoon. Waves building to 6 to 10 feet occasionally to
13 feet.
$$

LSZ266-221000-
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-
948 PM EDT Sun Apr 21 2024

...GALE WATCH IN EFFECT FROM TUESDAY MORNING THROUGH TUESDAY
AFTERNOON...

.REST OF TONIGHT...Southeast winds 5 to 15 knots veering south
after midnight, then increasing to 10 to 20 knots late. Waves
1 to 3 feet subsiding to calm to 2 feet, then building to 2 to
4 feet.
.MONDAY...Southwest winds 10 to 20 knots backing south late.
Waves building to 3 to 5 feet occasionally to 7 feet, then
subsiding to 1 to 3 feet.
.MONDAY NIGHT...South winds 15 to 25 knots diminishing to 10 to
20 knots after midnight, then becoming southwest 15 to 25 knots
late. Rain showers. Waves building to 3 to 5 feet occasionally to
7 feet, then subsiding to 2 to 4 feet.
.TUESDAY...North gales to 35 knots. Rain and snow showers likely
through early afternoon, then a chance of snow showers by mid
afternoon. Waves building to 9 to 12 feet occasionally to
15 feet, then subsiding to 7 to 10 feet occasionally to 13 feet.
$$

LSZ267-221000-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
948 PM EDT Sun Apr 21 2024

.REST OF TONIGHT...Northwest winds 5 to 15 knots backing south
after midnight, then increasing to 10 to 20 knots late. Waves
3 to 5 feet occasionally to 7 feet subsiding to calm to 2 feet,
then building to 1 to 3 feet.
.MONDAY...Southwest winds 15 to 25 knots backing south late.
Waves building to 2 to 4 feet, then subsiding to 1 to 3 feet.
.MONDAY NIGHT...South winds 20 to 30 knots diminishing to 10 to
20 knots. A chance of rain showers through midnight, then rain
showers likely after midnight. Waves building to 3 to 5 feet
occasionally to 7 feet, then subsiding to 2 to 4 feet.
.TUESDAY...West winds 20 to 30 knots veering north by mid
afternoon. Rain showers, possibly mixed with snow through early
afternoon, then a chance of snow showers, possibly mixed with
rain by mid afternoon. Waves building to 7 to 10 feet
occasionally to 13 feet.
$$