710
AXUS43 KMQT 182001
MISMQT

OPEN LAKE FORECAST FOR LAKE SUPERIOR FOR NOAA WEATHER RADIO
NATIONAL WEATHER SERVICE MARQUETTE MI
401 PM EDT Fri Sep 18 2026

LSZ162-190800-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-
401 PM EDT Fri Sep 18 2026 /301 PM CDT Fri Sep 18 2026/

.LATE THIS AFTERNOON...East winds 10 to 20 knots. A slight chance
of rain. Waves 1 to 3 feet building to 2 to 4 feet.
.TONIGHT...East winds 10 to 20 knots diminishing to 5 to 15 knots
after midnight. A slight chance of rain through midnight. Waves
subsiding to calm to 2 feet.
.SATURDAY...East winds 5 to 15 knots becoming northeast 10 to
20 knots in the afternoon, then becoming east 5 to 15 knots late.
Waves calm to 2 feet.
.SATURDAY NIGHT...Northeast winds 5 to 15 knots backing north
after midnight, then becoming northeast 15 to 25 knots late.
Waves building to 1 to 3 feet.
.SUNDAY...Northeast winds 20 to 30 knots veering east 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.
$$

LSZ263-190800-
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 PM EDT Fri Sep 18 2026

.LATE THIS AFTERNOON...East winds 10 to 20 knots. Waves 1 to
3 feet.
.TONIGHT...East winds 10 to 20 knots veering southeast after
midnight, then diminishing to 5 to 15 knots late. Waves subsiding
to calm to 2 feet.
.SATURDAY...Southeast winds 5 to 15 knots backing northeast in
the afternoon. Waves calm to 2 feet.
.SATURDAY NIGHT...Northeast winds 5 to 15 knots becoming north
10 to 20 knots after midnight, then becoming northeast 15 to
25 knots late. Waves building to 1 to 3 feet.
.SUNDAY...Northeast winds 20 to 30 knots. Waves building to 4 to
7 feet occasionally to 9 feet, then subsiding to 3 to 6 feet
occasionally to 8 feet.
$$

LSZ264-190800-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
401 PM EDT Fri Sep 18 2026

.LATE THIS AFTERNOON...East winds 10 to 20 knots. Waves 1 to
3 feet subsiding to calm to 2 feet.
.TONIGHT...Southeast winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. Waves calm to 2 feet.
.SATURDAY...South winds 5 to 15 knots backing southeast in the
afternoon. Waves calm to 2 feet.
.SATURDAY NIGHT...East winds less than 10 knots becoming north
5 to 15 knots after midnight, then increasing to 15 to 25 knots
late. Waves calm to 2 feet.
.SUNDAY...Northeast winds 20 to 30 knots diminishing to 15 to
25 knots by mid afternoon. Waves building to 3 to 5 feet
occasionally to 7 feet, then subsiding to 1 to 3 feet.
$$

LSZ265-190800-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
401 PM EDT Fri Sep 18 2026

.LATE THIS AFTERNOON...East winds 15 to 25 knots. Waves 1 to
3 feet.
.TONIGHT...East winds 15 to 25 knots becoming southeast 10 to
20 knots after midnight. Waves subsiding to calm to 2 feet.
.SATURDAY...Southeast winds 10 to 20 knots backing east late.
Waves calm to 2 feet.
.SATURDAY NIGHT...East winds 5 to 15 knots backing north after
midnight, then increasing to 15 to 25 knots late. Waves calm to
2 feet.
.SUNDAY...Northeast gales to 35 knots diminishing to 20 to
30 knots by mid afternoon. Waves building to 3 to 5 feet
occasionally to 7 feet, then subsiding to 2 to 4 feet.
$$

LSZ266-190800-
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 PM EDT Fri Sep 18 2026

.LATE THIS AFTERNOON...East winds 5 to 15 knots. Waves 1 to
3 feet subsiding to calm to 2 feet.
.TONIGHT...East winds 5 to 15 knots veering southeast after
midnight, then increasing to 10 to 20 knots late. Waves calm to
2 feet.
.SATURDAY...Southeast winds 10 to 20 knots becoming east 5 to
15 knots late. Waves calm to 2 feet.
.SATURDAY NIGHT...East winds 5 to 15 knots backing north after
midnight, then increasing to 15 to 25 knots late. Waves calm to
2 feet.
.SUNDAY...Northeast winds 20 to 30 knots backing north by mid
afternoon. Waves building to 3 to 5 feet occasionally to 7 feet,
then subsiding to 2 to 4 feet.
$$

LSZ267-190800-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
401 PM EDT Fri Sep 18 2026

.LATE THIS AFTERNOON...Northeast winds 5 to 15 knots. Waves calm
to 2 feet.
.TONIGHT...East winds 5 to 15 knots veering southeast after
midnight, then increasing to 10 to 20 knots late. Waves calm to
2 feet.
.SATURDAY...Southeast winds 10 to 20 knots becoming east 5 to
15 knots late. Waves calm to 2 feet.
.SATURDAY NIGHT...East winds 5 to 15 knots backing north after
midnight. Waves calm to 2 feet.
.SUNDAY...North winds 15 to 25 knots. Waves building to 3 to
5 feet occasionally to 7 feet, then subsiding to 2 to 4 feet.
$$