703
AXUS43 KMQT 210801
MISMQT

OPEN LAKE FORECAST FOR LAKE SUPERIOR FOR NOAA WEATHER RADIO
NATIONAL WEATHER SERVICE MARQUETTE MI
400 AM EDT Fri Aug 21 2026

LSZ162-212000-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
400 AM EDT Fri Aug 21 2026 /300 AM CDT Fri Aug 21 2026/

.EARLY THIS MORNING...Northeast winds 5 to 15 knots. Patchy fog.
Waves calm to 2 feet.
.TODAY...North winds 5 to 15 knots backing west in the afternoon,
then backing southwest late. Patchy fog through early afternoon.
Waves calm to 2 feet.
.TONIGHT...Southwest winds 5 to 15 knots veering northwest after
midnight, then increasing to 10 to 20 knots late. Waves calm to
2 feet.
.SATURDAY...Northwest winds 10 to 20 knots diminishing to 5 to
15 knots late. Waves calm to 2 feet.
.SATURDAY NIGHT...North winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. Waves calm to 2 feet.
$$

LSZ263-212000-
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-
400 AM EDT Fri Aug 21 2026

.EARLY THIS MORNING...South winds 5 to 15 knots. Patchy fog. A
slight chance of showers. Waves calm to 2 feet.
.TODAY...Northeast winds 5 to 15 knots backing northwest in the
afternoon, then backing west late. Patchy fog through early
afternoon. A slight chance of showers through early afternoon.
Waves calm to 2 feet.
.TONIGHT...Southwest winds 5 to 15 knots veering northwest late.
A slight chance of showers after midnight. Waves calm to 2 feet.
.SATURDAY...Northwest winds 10 to 20 knots diminishing to 5 to
15 knots in the afternoon, then backing west late. Waves calm to
2 feet.
.SATURDAY NIGHT...North winds 5 to 15 knots increasing to 10 to
20 knots after midnight. Waves building to 1 to 3 feet.
$$

LSZ264-212000-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
400 AM EDT Fri Aug 21 2026

.EARLY THIS MORNING...Southeast winds 5 to 15 knots. A chance of
showers. Waves 1 to 3 feet.
.TODAY...Southeast winds 5 to 15 knots backing north in the
afternoon, then backing northwest late. A slight chance of
showers. Waves subsiding to calm to 2 feet.
.TONIGHT...West winds 5 to 15 knots veering northwest late.
Patchy fog after midnight. Waves calm to 2 feet.
.SATURDAY...Northwest winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon. Waves calm to 2 feet.
.SATURDAY NIGHT...North winds 10 to 20 knots. Waves building to
1 to 3 feet.
$$

LSZ265-212000-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
400 AM EDT Fri Aug 21 2026

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

LSZ266-212000-
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-
400 AM EDT Fri Aug 21 2026

.EARLY THIS MORNING...South winds 10 to 20 knots. Showers likely
and a slight chance of thunderstorms. Waves 1 to 3 feet.
.TODAY...South winds 10 to 20 knots diminishing to 5 to 15 knots
late. A chance of showers. A slight chance of thunderstorms by
mid afternoon. Waves subsiding to calm to 2 feet.
.TONIGHT...Northwest winds 5 to 15 knots increasing to 10 to
20 knots after midnight. A slight chance of showers through
midnight. Patchy fog after midnight. Waves calm to 2 feet.
.SATURDAY...Northwest winds 15 to 25 knots increasing to 20 to
30 knots in the afternoon. Patchy dense fog through early
afternoon. Waves building to 3 to 6 feet occasionally to 8 feet.
.SATURDAY NIGHT...North winds 20 to 30 knots diminishing to 15 to
25 knots after midnight. Waves subsiding to 3 to 6 feet
occasionally to 8 feet.
$$

LSZ267-212000-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
400 AM EDT Fri Aug 21 2026

.EARLY THIS MORNING...South winds 15 to 25 knots. A chance of
showers. Waves calm to 2 feet building to 1 to 3 feet.
.TODAY...South winds 15 to 25 knots diminishing to 10 to 20 knots
in the afternoon. A chance of showers through early afternoon. A
slight chance of thunderstorms. Showers likely by mid afternoon.
Waves building to 2 to 4 feet, then subsiding to calm to 2 feet.
.TONIGHT...South winds 5 to 15 knots becoming northwest 10 to
20 knots after midnight. A chance of showers and a slight chance
of thunderstorms through midnight. Patchy fog. Waves calm to
2 feet.
.SATURDAY...Northwest winds 10 to 20 knots increasing to 15 to
25 knots late. Patchy dense fog through early afternoon. Waves
building to 2 to 4 feet.
.SATURDAY NIGHT...North winds 20 to 30 knots. Waves building to
3 to 5 feet occasionally to 7 feet.
$$