797
FZUS53 KDLH 181518
NSHDLH

Nearshore Marine Forecast
National Weather Service Duluth MN
918 AM CST Tue Nov 18 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.

LSZ140-182300-
Grand Portage to Grand Marais MN-
918 AM CST Tue Nov 18 2025

.REST OF TODAY...Northeast wind 5 knots becoming east early in
the afternoon, then becoming southwest late. Sunny. Waves 1 foot
or less.
.TONIGHT...West wind 5 to 10 knots. Partly cloudy. Waves 1 foot
or less.
.WEDNESDAY...Southwest wind 10 to 15 knots. Gusts up to 20 knots
in the late morning and afternoon. Mostly cloudy. Waves 1 to
3 feet.
.WEDNESDAY NIGHT...Southwest wind 10 to 15 knots. Gusts up to
20 knots increasing to 25 knots in the late evening and
overnight. Chance of rain in the evening, then rain likely after
midnight. Waves 1 to 3 feet.

$$

LSZ141-182300-
Grand Marais to Taconite Harbor MN-
918 AM CST Tue Nov 18 2025

.REST OF TODAY...Northeast wind 5 knots becoming south late.
Sunny. Waves 1 foot or less.
.TONIGHT...West wind 5 knots. Partly cloudy. Waves 1 foot or
less.
.WEDNESDAY...Southwest wind 5 to 10 knots. Mostly cloudy. Waves
1 foot or less.
.WEDNESDAY NIGHT...Southwest wind 5 to 10 knots. Gusts up to
20 knots in the late evening and overnight. Chance of rain in the
evening, then rain likely after midnight. Waves 1 to 2 feet.

$$

LSZ142-182300-
Taconite Harbor to Silver Bay Harbor MN-
918 AM CST Tue Nov 18 2025

.REST OF TODAY...Northeast wind 5 knots becoming southeast late.
Sunny. Waves 1 foot or less.
.TONIGHT...Variable winds 10 knots or less becoming west 5 knots
in the late evening and overnight. Partly cloudy. Waves 1 foot or
less.
.WEDNESDAY...Southwest wind 5 to 10 knots. Mostly cloudy. Waves
1 foot or less.
.WEDNESDAY NIGHT...Southwest wind 5 knots. Chance of rain in the
evening, then rain likely after midnight. Waves 1 foot or less.

$$

LSZ143-182300-
Silver Bay Harbor to Two Harbors MN-
918 AM CST Tue Nov 18 2025

.REST OF TODAY...Northeast wind 5 knots. Sunny. Waves 1 foot or
less.
.TONIGHT...Variable winds 10 knots or less becoming west 5 knots
in the late evening and overnight. Partly cloudy. Waves 1 foot or
less.
.WEDNESDAY...Southwest wind 5 to 10 knots. Mostly cloudy. Waves
1 foot or less.
.WEDNESDAY NIGHT...Southwest wind 5 to 10 knots. Gusts up to
20 knots in the evening. Chance of rain in the evening, then rain
likely after midnight. Waves 1 foot or less.

$$

LSZ144-182300-
Two Harbors to Duluth MN-
918 AM CST Tue Nov 18 2025

.REST OF TODAY...East wind 5 knots. Sunny. Waves 1 foot or less.
.TONIGHT...East wind 5 knots becoming southwest after midnight.
Partly cloudy. Waves 1 foot or less.
.WEDNESDAY...Southwest wind 5 to 10 knots. Cloudy. Waves 1 foot
or less.
.WEDNESDAY NIGHT...Southwest wind 5 to 10 knots. Chance of rain
in the evening, then rain likely after midnight. Waves 1 foot or
less.

$$

LSZ145-182300-
Duluth MN to Port Wing WI-
918 AM CST Tue Nov 18 2025

.REST OF TODAY...East wind 5 knots. Sunny. Waves 1 foot or less.
.TONIGHT...East wind 5 knots becoming southwest early in the
morning. Partly cloudy. Waves 1 foot or less.
.WEDNESDAY...Southwest wind 5 to 10 knots. Mostly cloudy. Waves
1 foot or less.
.WEDNESDAY NIGHT...Southwest wind 5 to 10 knots. Chance of rain
in the evening, then rain likely after midnight. Waves 1 foot or
less.

$$

LSZ146-182300-
Port Wing to Sand Island WI-
918 AM CST Tue Nov 18 2025

.REST OF TODAY...East wind 5 knots. Sunny. Waves 1 foot or less.
.TONIGHT...Southeast wind 5 knots becoming southwest early in the
morning. Partly cloudy. Waves 1 foot or less.
.WEDNESDAY...Southwest wind 5 to 10 knots. Mostly cloudy. Waves
1 foot or less.
.WEDNESDAY NIGHT...Southwest wind 5 to 10 knots. Chance of rain
in the evening, then rain likely after midnight. Waves 1 foot or
less.

$$

LSZ147-182300-
Sand Island to Bayfield WI-
918 AM CST Tue Nov 18 2025

.REST OF TODAY...East wind 5 knots. Sunny. Waves 1 foot or less.
.TONIGHT...Southeast wind 5 knots becoming southwest in the late
evening and overnight. Partly cloudy. Waves 1 foot or less.
.WEDNESDAY...Southwest wind 5 to 10 knots. Mostly cloudy. Waves
1 foot or less.
.WEDNESDAY NIGHT...Southwest wind 5 to 10 knots. Chance of rain
in the evening, then rain likely after midnight. Waves 1 foot or
less.

$$

LSZ150-182300-
Outer Apostle Islands Beyond 5 NM from Mainland-
918 AM CST Tue Nov 18 2025

.REST OF TODAY...East wind 5 knots. Sunny. Waves 1 foot or less.
.TONIGHT...Southeast wind 5 knots becoming southwest early in the
morning. Partly cloudy. Waves 1 foot or less.
.WEDNESDAY...Southwest wind 5 to 10 knots. Mostly cloudy. Waves
1 foot or less.
.WEDNESDAY NIGHT...Southwest wind 10 to 15 knots with gusts to
around 20 knots. Chance of rain in the evening, then rain likely
after midnight. Waves 1 to 2 feet.

$$

LSZ121-182300-
Chequamegon Bay-Bayfield to Oak Point WI-
918 AM CST Tue Nov 18 2025

.REST OF TODAY...South wind 5 knots becoming east in the
afternoon. Sunny. Waves 1 foot or less.
.TONIGHT...Southeast wind 5 knots becoming southwest in the late
evening and overnight. Mostly clear. Waves 1 foot or less.
.WEDNESDAY...Southwest wind 5 to 10 knots. Mostly cloudy. Waves
1 foot or less.
.WEDNESDAY NIGHT...Southwest wind 5 to 10 knots. Chance of rain
in the evening, then rain likely after midnight. Waves 1 foot or
less.

$$

LSZ148-182300-
Oak Point to Saxon Harbor WI-
918 AM CST Tue Nov 18 2025

.REST OF TODAY...South wind 5 knots becoming northeast in the
afternoon. Sunny. Waves 1 to 2 feet.
.TONIGHT...East wind 5 knots becoming southwest in the late
evening and overnight. Mostly clear. Waves 1 foot or less.
.WEDNESDAY...Southwest wind 5 to 10 knots. Mostly cloudy. Waves
1 foot or less.
.WEDNESDAY NIGHT...Southwest wind 5 to 10 knots. Chance of rain
in the evening, then rain likely after midnight. Waves 1 foot or
less.

$$

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

WFO DLH