496
FZUS53 KDLH 012015
NSHDLH

Nearshore Marine Forecast
National Weather Service Duluth MN
315 PM CDT Mon Sep 1 2025

For waters within five nautical miles of shore on Lake Superior.

Waves are the significant wave height - the average of the highest
1/3 of the wave spectrum. Occasional wave height is the average of
the highest 1/10 of the wave spectrum.

LSZ140-141-020400-
Grand Portage to Grand Marais MN-
Grand Marais to Taconite Harbor MN-
315 PM CDT Mon Sep 1 2025

.TONIGHT...Southwest wind 5 to 10 knots. Slight chance of
sprinkles late in the night. Waves 1 foot or less.
.TUESDAY...Southwest wind 10 to 15 knots. Gusts up to 25 knots.
Slight chance of sprinkles in the morning. Chance of showers and
thunderstorms in the afternoon. Waves 1 to 2 feet.
.TUESDAY NIGHT...West wind 10 to 15 knots with gusts to around
20 knots becoming northwest with gusts to around 25 knots after
midnight. Rain showers and chance of thunderstorms in the
evening, then chance of rain showers and slight chance of
thunderstorms after midnight. Waves 1 to 2 feet.
.WEDNESDAY...North wind 20 to 25 knots. Gusts up to 25 knots
increasing to 30 knots in the late morning and afternoon. Chance
of rain showers. Waves 1 to 3 feet. A small craft advisory may be
needed.

$$

LSZ142-143-020400-
Taconite Harbor to Silver Bay Harbor MN-
Silver Bay Harbor to Two Harbors MN-
315 PM CDT Mon Sep 1 2025

.TONIGHT...Southwest wind 5 to 10 knots. Slight chance of
sprinkles through the night. Waves 1 foot or less.
.TUESDAY...Southwest wind 10 to 15 knots. Slight chance of
showers and thunderstorms in the morning, then chance of showers
and thunderstorms in the afternoon. Waves 1 to 2 feet.
.TUESDAY NIGHT...Southwest wind 5 to 10 knots becoming northwest
with gusts to around 20 knots early in the morning. Rain showers
likely and chance of thunderstorms in the evening, then chance of
rain showers and slight chance of thunderstorms after midnight.
Waves 1 to 2 feet.
.WEDNESDAY...Northwest wind 10 to 15 knots. Gusts up to 20 knots
increasing to 25 knots in the afternoon. Chance of rain showers.
Waves 1 to 2 feet.

$$

LSZ144-145-020400-
Two Harbors to Duluth MN-Duluth MN to Port Wing WI-
315 PM CDT Mon Sep 1 2025

.TONIGHT...Southwest wind 5 to 10 knots. Slight chance of
sprinkles through the night. Waves 1 foot or less.
.TUESDAY...Southwest wind 5 to 10 knots. Patchy fog in the
morning. Slight chance of showers and thunderstorms in the
morning, then chance of showers and thunderstorms in the
afternoon. Waves 1 foot or less.
.TUESDAY NIGHT...West wind 5 to 10 knots becoming northwest 10 to
15 knots with gusts to around 20 knots after midnight. Rain
showers likely and chance of thunderstorms in the evening, then
slight chance of showers and thunderstorms after midnight. Waves
1 to 2 feet.
.WEDNESDAY...Northwest wind 10 to 15 knots. Gusts up to 20 knots
increasing to 25 knots late in the afternoon. Chance of rain
showers through the day. Slight chance of thunderstorms in the
afternoon. Waves 1 to 2 feet.

$$

LSZ146-020400-
Port Wing to Sand Island WI-
315 PM CDT Mon Sep 1 2025

.TONIGHT...Southwest wind 5 to 10 knots. Slight chance of
sprinkles in the late evening and overnight. Waves 1 foot or
less.
.TUESDAY...Southwest wind 5 to 10 knots. Chance of showers and
thunderstorms in the afternoon. Waves 1 to 2 feet.
.TUESDAY NIGHT...Southwest wind 10 to 15 knots becoming northwest
5 to 10 knots with gusts to around 20 knots after midnight. Rain
showers likely and chance of thunderstorms in the evening, then
chance of rain showers and slight chance of thunderstorms after
midnight. Waves 1 to 2 feet.
.WEDNESDAY...Northwest wind 10 knots with gusts to around
20 knots becoming north with gusts to around 25 knots in the late
morning and afternoon. Chance of rain showers through the day.
Slight chance of thunderstorms in the afternoon. Waves 1 to
3 feet.

$$

LSZ147-020400-
Sand Island to Bayfield WI-
315 PM CDT Mon Sep 1 2025

.TONIGHT...Southwest wind 5 to 10 knots. Slight chance of
sprinkles in the late evening and early morning. Waves 1 foot or
less.
.TUESDAY...Southwest wind 5 to 10 knots. Slight chance of
sprinkles in the morning. Chance of showers and thunderstorms in
the afternoon. Waves 1 foot or less.
.TUESDAY NIGHT...Southwest wind 10 to 15 knots becoming northwest
5 to 10 knots with gusts to around 20 knots after midnight. Rain
showers and chance of thunderstorms in the evening, then chance
of rain showers and slight chance of thunderstorms after
midnight. Waves 1 to 2 feet.
.WEDNESDAY...Northwest wind 10 to 15 knots. Gusts up to 20 knots
increasing to 25 knots in the afternoon. Chance of rain showers.
Waves 1 to 3 feet.

$$

LSZ150-020400-
Outer Apostle Islands Beyond 5 NM from Mainland-
315 PM CDT Mon Sep 1 2025

.TONIGHT...South wind 5 to 10 knots becoming southwest after
midnight. Slight chance of sprinkles in the late evening and
early morning. Waves 1 foot or less.
.TUESDAY...Southwest wind 10 to 15 knots. Chance of showers and
thunderstorms in the afternoon. Waves 1 to 2 feet.
.TUESDAY NIGHT...Southwest wind 10 to 15 knots becoming northwest
with gusts to around 20 knots after midnight. Rain showers and
chance of thunderstorms in the evening, then chance of rain
showers and slight chance of thunderstorms after midnight. Waves
1 to 3 feet.
.WEDNESDAY...North wind 10 to 15 knots. Gusts up to 20 knots
increasing to 25 knots in the afternoon. Chance of rain showers.
Waves 2 to 4 feet. A small craft advisory may be needed.

$$

LSZ121-020400-
Chequamegon Bay-Bayfield to Oak Point WI-
315 PM CDT Mon Sep 1 2025

.TONIGHT...South wind 5 knots becoming southwest after midnight.
Slight chance of sprinkles in the late evening and early morning.
Waves 1 foot or less.
.TUESDAY...Southwest wind 5 to 10 knots. Chance of showers and
thunderstorms in the afternoon. Waves 1 foot or less.
.TUESDAY NIGHT...Southwest wind 5 to 10 knots becoming west after
midnight. Chance of thunderstorms in the evening. Rain showers
through the night. Slight chance of thunderstorms after midnight.
Waves 1 foot or less.
.WEDNESDAY...Northwest wind 10 to 15 knots. Gusts up to 20 knots
in the late morning and afternoon. Chance of rain showers through
the day. Slight chance of thunderstorms in the afternoon. Waves
1 foot or less.

$$

LSZ148-020400-
Oak Point to Saxon Harbor WI-
315 PM CDT Mon Sep 1 2025

.TONIGHT...Southeast wind 5 knots becoming southwest in the late
evening and overnight. Slight chance of sprinkles in the late
evening and early morning. Waves 1 foot or less.
.TUESDAY...Southwest wind 5 to 10 knots. Slight chance of
sprinkles in the morning. Chance of showers and thunderstorms in
the afternoon. Waves 1 foot or less.
.TUESDAY NIGHT...Southwest wind 5 to 10 knots becoming west after
midnight. Chance of thunderstorms in the evening. Chance of rain
showers through the night. Slight chance of thunderstorms after
midnight. Waves 1 to 2 feet.
.WEDNESDAY...Northwest wind 15 to 20 knots. Gusts up to 20 knots
increasing to 25 knots late in the afternoon. Chance of rain
showers through the day. Slight chance of thunderstorms in the
afternoon. Waves 1 to 3 feet.

$$

Graphical marine forecasts are available online at:
weather.gov/greatlakes

LR