483
AXUS43 KMQT 220801
MISMQT

OPEN LAKE FORECAST FOR LAKE SUPERIOR FOR NOAA WEATHER RADIO
NATIONAL WEATHER SERVICE MARQUETTE MI
401 AM EDT Fri Aug 22 2025

LSZ162-222000-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
401 AM EDT Fri Aug 22 2025 /301 AM CDT Fri Aug 22 2025/

.EARLY THIS MORNING...Southwest winds 5 to 15 knots. A slight
chance of showers and thunderstorms. Waves calm to 2 feet.
.TODAY...Southwest winds 10 to 20 knots. A chance of showers and
a slight chance of thunderstorms. Waves calm to 2 feet.
.TONIGHT...Southwest winds 10 to 20 knots veering west after
midnight, then increasing to 15 to 25 knots late. A slight chance
of showers through midnight. Waves building to 2 to 4 feet.
.SATURDAY...West winds 15 to 25 knots increasing to 20 to
30 knots in the afternoon. A slight chance of showers by mid
afternoon. Waves building to 3 to 5 feet occasionally to 7 feet,
then subsiding to 2 to 4 feet.
.SATURDAY NIGHT...West winds 20 to 30 knots diminishing to 15 to
25 knots after midnight. A slight chance of showers after
midnight. Waves 2 to 4 feet.
$$

LSZ263-222000-
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-
401 AM EDT Fri Aug 22 2025

.EARLY THIS MORNING...Southwest winds 5 to 15 knots. A slight
chance of showers and thunderstorms. Waves 1 to 3 feet.
.TODAY...Southwest winds 5 to 15 knots veering west in the
afternoon, then backing southwest late. A slight chance of
showers and thunderstorms. Waves subsiding to calm to 2 feet.
.TONIGHT...Southwest winds 5 to 15 knots increasing to 10 to
20 knots after midnight, then becoming west 15 to 25 knots late.
A slight chance of thunderstorms through midnight. A slight
chance of showers. Waves building to 3 to 5 feet occasionally to
7 feet.
.SATURDAY...West winds 15 to 25 knots increasing to 20 to
30 knots in the afternoon. A slight chance of showers by mid
afternoon. Waves building to 4 to 7 feet occasionally to 9 feet,
then subsiding to 3 to 6 feet occasionally to 8 feet.
.SATURDAY NIGHT...West winds 20 to 30 knots diminishing to 15 to
25 knots after midnight. A slight chance of showers. Waves
subsiding to 3 to 6 feet occasionally to 8 feet.
$$

LSZ264-222000-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
401 AM EDT Fri Aug 22 2025

.EARLY THIS MORNING...Southwest winds 5 to 15 knots. A chance of
showers and thunderstorms. Waves calm to 2 feet building to 1 to
3 feet.
.TODAY...West winds 5 to 15 knots backing southwest late. A
chance of showers and a slight chance of thunderstorms. Waves
subsiding to calm to 2 feet.
.TONIGHT...Southwest winds 5 to 15 knots becoming west 10 to
20 knots late. A slight chance of thunderstorms through midnight.
A slight chance of showers. Waves building to 2 to 4 feet.
.SATURDAY...West winds 15 to 25 knots increasing to 20 to
30 knots in the afternoon. Waves building to 4 to 7 feet
occasionally to 9 feet, then subsiding to 3 to 6 feet
occasionally to 8 feet.
.SATURDAY NIGHT...West winds 15 to 25 knots. A slight chance of
showers after midnight. Waves subsiding to 3 to 5 feet
occasionally to 7 feet.
$$

LSZ265-222000-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
401 AM EDT Fri Aug 22 2025

.EARLY THIS MORNING...Southwest winds 10 to 20 knots. A slight
chance of showers and thunderstorms. Waves calm to 2 feet.
.TODAY...Southwest winds 5 to 15 knots veering west in the
afternoon. A chance of showers and thunderstorms. Waves calm to
2 feet.
.TONIGHT...Southwest winds 5 to 15 knots becoming west 10 to
20 knots late. A slight chance of thunderstorms through midnight.
A slight chance of showers. Waves building to 1 to 3 feet.
.SATURDAY...West winds 15 to 25 knots increasing to 20 to
30 knots in the afternoon. Waves subsiding to calm to 2 feet,
then building to 1 to 3 feet.
.SATURDAY NIGHT...West winds 15 to 25 knots. A chance of showers
after midnight. Waves subsiding to calm to 2 feet.
$$

LSZ266-222000-
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-
401 AM EDT Fri Aug 22 2025

.EARLY THIS MORNING...Southwest winds 10 to 20 knots. A chance of
showers and a slight chance of thunderstorms. Waves calm to
2 feet.
.TODAY...Southwest winds 5 to 15 knots. A chance of showers and
thunderstorms. Waves building to 1 to 3 feet, then subsiding to
calm to 2 feet.
.TONIGHT...Southwest winds 5 to 15 knots increasing to 10 to
20 knots after midnight. A slight chance of thunderstorms through
midnight. A chance of showers. Waves building to 1 to 3 feet.
.SATURDAY...West winds 15 to 25 knots. Waves building to 3 to
6 feet occasionally to 8 feet.
.SATURDAY NIGHT...West winds 15 to 25 knots. A chance of showers
and a slight chance of thunderstorms after midnight. Waves
subsiding to 2 to 4 feet.
$$

LSZ267-222000-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
401 AM EDT Fri Aug 22 2025

.EARLY THIS MORNING...Southwest winds 10 to 20 knots. A slight
chance of showers. Waves calm to 2 feet.
.TODAY...Southwest winds 10 to 20 knots diminishing to 5 to
15 knots in the afternoon, then backing south late. A chance of
showers. A chance of thunderstorms by mid afternoon. Waves calm
to 2 feet.
.TONIGHT...Southwest winds 10 to 20 knots. Showers likely through
midnight. A chance of thunderstorms. A chance of showers after
midnight. Waves calm to 2 feet.
.SATURDAY...West winds 10 to 20 knots increasing to 15 to
25 knots in the afternoon. A slight chance of showers and
thunderstorms through early afternoon. Waves building to 2 to
4 feet.
.SATURDAY NIGHT...West winds 15 to 25 knots. A slight chance of
showers after midnight. Waves building to 3 to 5 feet
occasionally to 7 feet.
$$