Nearshore Marine Forecast
Issued by NWS Duluth, MN

Home |  Current Version |  Previous Version |  Text Only |  Print | Product List |  Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34
829
FZUS53 KDLH 221433
NSHDLH

Nearshore Marine Forecast
National Weather Service Duluth MN
933 AM CDT Tue Apr 22 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.

LSZ140-141-222215-
Grand Portage to Grand Marais MN-
Grand Marais to Taconite Harbor MN-
933 AM CDT Tue Apr 22 2025

.REST OF TODAY...East wind 10 to 15 knots. Gusts up to 20 knots
late. Slight chance of rain showers early in the afternoon.
Chance of rain showers late. Waves 1 to 2 feet.
.TONIGHT...Northeast wind 10 to 15 knots. Gusts up to 20 knots
until early morning. Chance of rain showers in the evening, then
slight chance of rain showers after midnight. Waves 1 to 3 feet.
.WEDNESDAY...East wind 5 to 10 knots becoming southwest early in
the afternoon, then rising to 5 to 10 knots late in the
afternoon. Slight chance of rain showers. Waves 1 to 2 feet.
.WEDNESDAY NIGHT...Northwest wind 5 knots. Partly cloudy. Waves
1 foot or less.

Note...Wave height forecasts are for ice free areas.

$$

LSZ142-143-222215-
Taconite Harbor to Silver Bay Harbor MN-
Silver Bay Harbor to Two Harbors MN-
933 AM CDT Tue Apr 22 2025

.REST OF TODAY...Northeast wind 15 to 20 knots. Slight chance of
rain showers late in the morning, then chance of rain showers in
the afternoon. Waves 2 to 3 feet.
.TONIGHT...Northeast wind 15 to 20 knots easing to 5 to 10 knots
early in the morning. Slight chance of rain showers in the
evening. Patchy fog after midnight. Waves 1 to 3 feet.
.WEDNESDAY...Northeast wind 5 knots becoming south late in the
morning, then becoming southwest early in the afternoon becoming
west late in the afternoon. Patchy fog in the morning. Waves 1 to
2 feet.
.WEDNESDAY NIGHT...Northwest wind 5 to 10 knots. Partly cloudy.
Waves 1 foot or less.

Note...Wave height forecasts are for ice free areas.

$$

LSZ144-145-222215-
Two Harbors to Duluth MN-Duluth MN to Port Wing WI-
933 AM CDT Tue Apr 22 2025

.REST OF TODAY...Northeast wind 15 to 20 knots. Chance of rain
showers through the day. Waves 2 to 4 feet.
.TONIGHT...Northeast wind 15 to 20 knots easing to 5 to 10 knots
early in the morning. Areas of fog after midnight. Waves 2 to
4 feet subsiding to 1 to 3 feet after midnight.
.WEDNESDAY...East wind 5 knots becoming west in the late morning
and afternoon. Patchy fog in the morning. Slight chance of rain
showers in the morning. Waves 1 to 2 feet.
.WEDNESDAY NIGHT...Northwest wind 5 to 10 knots. Partly cloudy in
the evening then becoming mostly cloudy. Waves 1 foot or less.

Note...Wave height forecasts are for ice free areas.

$$

LSZ146-222215-
Port Wing to Sand Island WI-
933 AM CDT Tue Apr 22 2025

.REST OF TODAY...Northeast wind 10 to 15 knots. Chance of rain
showers. Waves 2 to 3 feet.
.TONIGHT...Northeast wind 10 to 15 knots. Slight chance of rain
showers in the evening. Patchy fog after midnight. Waves 1 to
3 feet.
.WEDNESDAY...Northeast wind 5 knots becoming west in the late
morning and afternoon. Patchy fog in the morning. Slight chance
of rain showers through the day. Waves 1 to 2 feet.
.WEDNESDAY NIGHT...Northwest wind 5 to 10 knots. Partly cloudy in
the evening then becoming mostly cloudy. Waves 1 foot or less.

Note...Wave height forecasts are for ice free areas.

$$

LSZ147-222215-
Sand Island to Bayfield WI-
933 AM CDT Tue Apr 22 2025

.REST OF TODAY...East wind 10 to 15 knots. Slight chance of rain
showers late in the morning, then chance of rain showers in the
afternoon. Waves 1 to 2 feet.
.TONIGHT...East wind 10 to 15 knots easing to 5 knots early in
the morning. Slight chance of rain showers in the evening. Patchy
fog after midnight. Waves 1 to 2 feet.
.WEDNESDAY...South wind 5 knots becoming west in the late morning
and afternoon. Slight chance of rain showers through the day.
Waves 1 foot or less.
.WEDNESDAY NIGHT...Northwest wind 5 to 10 knots. Slight chance of
rain showers. Waves 1 foot or less.

Note...Wave height forecasts are for ice free areas.

$$

LSZ121-222215-
Chequamegon Bay-Bayfield to Oak Point WI-
933 AM CDT Tue Apr 22 2025

.REST OF TODAY...East wind 5 to 10 knots. Chance of rain showers.
Waves 1 to 2 feet.
.TONIGHT...Northeast wind 5 to 10 knots becoming southeast early
in the morning. Patchy fog after midnight. Waves 1 to 2 feet.
.WEDNESDAY...Southwest wind 5 knots becoming west in the
afternoon. Slight chance of rain showers through the day. Waves
1 foot or less.
.WEDNESDAY NIGHT...Northwest wind 5 to 10 knots. Slight chance of
rain showers through the night. Waves 1 foot or less.

Note...Wave height forecasts are for ice free areas.

$$

LSZ148-222215-
Oak Point to Saxon Harbor WI-
933 AM CDT Tue Apr 22 2025

.REST OF TODAY...East wind 5 to 10 knots. Chance of rain showers.
Waves 1 to 2 feet.
.TONIGHT...East wind 5 to 10 knots becoming southeast early in
the morning. Patchy fog after midnight. Waves 1 to 2 feet.
.WEDNESDAY...Southwest wind 5 knots becoming west late in the
afternoon. Slight chance of rain showers through the day. Waves
1 foot or less.
.WEDNESDAY NIGHT...Northwest wind 5 to 10 knots. Slight chance of
rain showers through the night. Waves 1 foot or less.

Note...Wave height forecasts are for ice free areas.

$$

LSZ150-222215-
Outer Apostle Islands Beyond 5 NM from Mainland-
933 AM CDT Tue Apr 22 2025

.REST OF TODAY...East wind 10 to 15 knots. Gusts up to 20 knots
late. Slight chance of rain showers late in the morning, then
chance of rain showers in the afternoon. Waves 1 to 3 feet.
.TONIGHT...East wind 10 to 15 knots. Gusts up to 20 knots early
in the evening. Slight chance of rain showers in the evening.
Patchy fog after midnight. Waves 1 to 3 feet.
.WEDNESDAY...Southeast wind 5 to 10 knots becoming west late in
the afternoon. Patchy fog in the morning. Slight chance of rain
showers through the day. Waves 1 to 2 feet.
.WEDNESDAY NIGHT...Northwest wind 5 to 10 knots. Slight chance of
rain showers. Waves 1 foot or less.

Note...Wave height forecasts are for ice free areas.

$$

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

NLy