465
FZUS53 KDLH 220224
NSHDLH

Nearshore Marine Forecast
National Weather Service Duluth MN
924 PM CDT Mon Jul 21 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.

LSZ140-141-221015-
Grand Portage to Grand Marais MN-
Grand Marais to Taconite Harbor MN-
924 PM CDT Mon Jul 21 2025

.REST OF TONIGHT...East wind 10 to 15 knots easing to 5 knots
toward daybreak. Slight chance of rain showers in the late
evening and early morning. Waves 1 to 2 feet.
.TUESDAY...Southeast wind 5 to 10 knots. Chance of showers and
thunderstorms in the afternoon. Waves 1 to 2 feet.
.TUESDAY NIGHT...East wind 5 to 10 knots becoming south after
midnight. Showers with thunderstorms likely. Waves 1 to 2 feet.
.WEDNESDAY...Southwest wind 5 to 10 knots. Slight chance of
thunderstorms in the morning. Chance of showers through the day.
Chance of thunderstorms in the afternoon. Waves 1 to 2 feet.

$$

LSZ142-143-221015-
Taconite Harbor to Silver Bay Harbor MN-
Silver Bay Harbor to Two Harbors MN-
924 PM CDT Mon Jul 21 2025

.REST OF TONIGHT...Northeast wind 5 to 10 knots. Slight chance of
showers and thunderstorms in the late evening and early morning.
Waves 1 to 2 feet.
.TUESDAY...East wind 5 to 10 knots. 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...Northeast wind 5 to 10 knots becoming west after
midnight, then becoming south early in the morning. Thunderstorms
likely in the evening. Showers through the night. Thunderstorms
after midnight. Waves 1 foot or less.
.WEDNESDAY...Southwest wind 5 knots. Showers with thunderstorms
likely in the morning, then showers likely and chance of
thunderstorms in the afternoon. Waves 1 foot or less.

$$

LSZ144-145-221015-
Two Harbors to Duluth MN-Duluth MN to Port Wing WI-
924 PM CDT Mon Jul 21 2025

.REST OF TONIGHT...Northeast wind 5 to 10 knots. Slight chance of
showers and thunderstorms late in the evening. Waves 1 to 2 feet.
.TUESDAY...East wind 5 to 10 knots. Slight chance of
thunderstorms in the morning. Chance of showers through the day.
Chance of thunderstorms in the afternoon. Waves 1 foot or less.
.TUESDAY NIGHT...East wind 5 to 10 knots becoming south early in
the morning. Showers and thunderstorms likely in the evening,
then showers and thunderstorms after midnight. Waves 1 foot or
less.
.WEDNESDAY...Southwest wind 5 to 10 knots becoming west in the
afternoon. Showers with thunderstorms likely in the morning, then
showers likely and chance of thunderstorms in the afternoon.
Waves 1 foot or less.

$$

LSZ146-221015-
Port Wing to Sand Island WI-
924 PM CDT Mon Jul 21 2025

.REST OF TONIGHT...East wind 5 knots. Slight chance of showers
and thunderstorms in the late evening and early morning. Waves
1 to 2 feet.
.TUESDAY...East wind 5 to 10 knots. 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...Northeast wind 5 to 10 knots becoming east late
in the evening, then becoming south after midnight. Showers and
thunderstorms likely in the evening, then showers and
thunderstorms after midnight. Waves 1 foot or less.
.WEDNESDAY...Southwest wind 5 knots. Showers with thunderstorms
likely in the morning, then showers likely and chance of
thunderstorms in the afternoon. Waves 1 foot or less.

$$

LSZ147-221015-
Sand Island to Bayfield WI-
924 PM CDT Mon Jul 21 2025

.REST OF TONIGHT...Southeast wind 5 knots. Slight chance of
showers and thunderstorms in the late evening and early morning.
Waves 1 foot or less.
.TUESDAY...Southeast wind 5 to 10 knots. 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...East wind 5 to 10 knots becoming southwest after
midnight. Thunderstorms likely in the evening. Showers through
the night. Thunderstorms after midnight. Waves 1 foot or less.
.WEDNESDAY...Southwest wind 5 knots becoming west late in the
afternoon. Showers with thunderstorms likely in the morning, then
showers likely and chance of thunderstorms in the afternoon.
Waves 1 foot or less.

$$

LSZ150-221015-
Outer Apostle Islands Beyond 5 NM from Mainland-
924 PM CDT Mon Jul 21 2025

.REST OF TONIGHT...Southeast wind 5 to 10 knots. Slight chance of
showers and thunderstorms in the late evening and early morning.
Waves 1 to 2 feet.
.TUESDAY...South wind 5 to 10 knots becoming southeast in the
afternoon. Slight chance of showers in the morning, then chance
of showers and thunderstorms in the afternoon. Waves 1 foot or
less.
.TUESDAY NIGHT...Southeast wind 5 to 10 knots becoming southwest
after midnight. Thunderstorms likely in the evening. Showers
through the night. Thunderstorms after midnight. Waves 1 to
2 feet.
.WEDNESDAY...Southwest wind 5 to 10 knots becoming west in the
afternoon. Showers with thunderstorms likely in the morning, then
showers likely and chance of thunderstorms in the afternoon.
Waves 1 foot or less.

$$

LSZ121-221015-
Chequamegon Bay-Bayfield to Oak Point WI-
924 PM CDT Mon Jul 21 2025

.REST OF TONIGHT...East wind 5 knots becoming south after
midnight. Slight chance of showers and thunderstorms in the late
evening and early morning. Waves 1 foot or less.
.TUESDAY...South wind 5 to 10 knots. 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...Southwest wind 5 to 10 knots. Showers and
thunderstorms likely in the evening, then showers and
thunderstorms after midnight. Waves 1 foot or less.
.WEDNESDAY...Southwest wind 5 to 10 knots becoming northwest late
in the afternoon. Showers with thunderstorms likely in the
morning, then showers likely and chance of thunderstorms in the
afternoon. Waves 1 foot or less.

$$

LSZ148-221015-
Oak Point to Saxon Harbor WI-
924 PM CDT Mon Jul 21 2025

.REST OF TONIGHT...Southwest wind 5 knots becoming south after
midnight. Slight chance of showers and thunderstorms in the late
evening and early morning. Waves 1 foot or less.
.TUESDAY...South wind 5 to 10 knots. 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...South wind 5 to 10 knots. Showers likely in the
evening. Thunderstorms likely through the night. Showers after
midnight. Waves 1 foot or less.
.WEDNESDAY...Southwest wind 5 to 10 knots becoming northwest in
the afternoon. Showers with thunderstorms likely in the morning,
then showers likely and chance of thunderstorms in the afternoon.
Waves 1 foot or less.

$$

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

Britt