165
FZUS52 KMLB 171912
CWFMLB

Coastal Waters Forecast for East Central Florida
National Weather Service Melbourne FL
312 PM EDT Sun Aug 17 2025

Atlantic coastal waters from Flagler Beach to Jupiter Inlet out 60 nm.

Seas are provided as a range of the average height of the highest
one third of the waves, along with the occasional height of the
average highest ten percent of the waves.

ANZ500-180830-
Synopsis for Flagler Beach to Jupiter Inlet out to 60 nm
312 PM EDT Sun Aug 17 2025

.SYNOPSIS...High pressure over the eastern U.S. extends weakly to
Florida, as distant Major Hurricane Erin moves north of Puerto
Rico. While Erin is forecast to gradually turn north and pass east
of the local Atlantic waters, boating conditions are expected to
deteriorate Monday and remain hazardous through mid-week due to
large swell from Erin. The primary hazards will be higher seas and
treacherous currents near inlets and jetties, especially during
the outgoing tide cycles.

.GULF STREAM HAZARDS...None.

The approximate location of the west wall of the Gulf Stream based on
the Real Time Ocean Forecast System as of Sunday, August 17th, 2025.

40 nautical miles east of Ponce Inlet.
27 nautical miles east of Port Canaveral.
22 nautical miles east of Sebastian Inlet.
15 nautical miles east of Fort Pierce Inlet.
 9 nautical miles east of Saint Lucie Inlet.

$$

AMZ550-180830-
Flagler Beach to Volusia-Brevard County Line 0-20 nm-
312 PM EDT Sun Aug 17 2025

.TONIGHT...East winds around 5 knots. Seas 2 feet. Wave Detail:
East 2 feet at 9 seconds and southeast 1 foot at 4 seconds.
Smooth on the intracoastal waters. A chance of showers and
thunderstorms.
.MONDAY...Northeast winds 5 to 10 knots. Seas 3 to 4 feet. Wave
Detail: East 4 feet at 13 seconds and east 2 feet at 8 seconds. A
light chop on the intracoastal waters. A chance of showers and
thunderstorms.
.MONDAY NIGHT...Northeast winds 5 to 10 knots. Seas 4 to 6 feet,
occasionally to 8 feet. Wave Detail: East 6 feet at 16 seconds
and northeast 2 feet at 7 seconds. Mostly smooth on the
intracoastal waters. A slight chance of showers and thunderstorms
in the evening.
.TUESDAY...Northeast winds 10 to 15 knots. Seas 5 to 7 feet,
occasionally to 9 feet. Wave Detail: East 7 feet at 15 seconds. A
moderate chop on the intracoastal waters. A chance of showers. A
slight chance of thunderstorms in the morning, then a chance of
thunderstorms in the afternoon.
.TUESDAY NIGHT...North winds 10 to 15 knots. Seas 7 to 9 feet,
occasionally to 11 feet. Wave Detail: East 9 feet at 15 seconds
and northeast 5 feet at 7 seconds. A light chop on the
intracoastal waters. A chance of showers. A chance of
thunderstorms in the evening, then a slight chance of
thunderstorms after midnight.
.WEDNESDAY...North winds 10 to 15 knots. Seas 8 to 10 feet,
occasionally to 13 feet. Wave Detail: East 10 feet at 15 seconds
and east 6 feet at 8 seconds. A moderate chop on the intracoastal
waters. A chance of showers and thunderstorms.
.WEDNESDAY NIGHT...North winds 5 to 10 knots, becoming west after
midnight. Seas 7 to 9 feet, occasionally to 11 feet. Mostly
smooth on the intracoastal waters. A slight chance of showers and
thunderstorms.
.THURSDAY...Northwest winds 5 to 10 knots, becoming east in the
afternoon. Seas 5 to 7 feet, occasionally to 9 feet. A light chop
on the intracoastal waters. A slight chance of showers and
thunderstorms in the morning, then a chance of showers and
thunderstorms in the afternoon.
.THURSDAY NIGHT...South winds 5 to 10 knots, becoming southwest
after midnight. Seas 5 to 6 feet, occasionally to 8 feet. Mostly
smooth on the intracoastal waters. A slight chance of
thunderstorms. A chance of showers in the evening, then a slight
chance of showers after midnight.
.FRIDAY...West winds around 5 knots, becoming southeast in the
afternoon. Seas 4 to 5 feet, occasionally to 6 feet. A light chop
on the intracoastal waters. A chance of showers and thunderstorms
in the morning, then showers and thunderstorms likely in the
afternoon.
.FRIDAY NIGHT...South winds 5 to 10 knots, becoming southwest
after midnight. Seas 3 to 4 feet. Mostly smooth on the
intracoastal waters. A chance of showers. A chance of
thunderstorms in the evening, then a slight chance of
thunderstorms after midnight.

Winds and waves higher in and near thunderstorms.

$$

AMZ552-180830-
Volusia-Brevard County Line to Sebastian Inlet 0-20 nm-
312 PM EDT Sun Aug 17 2025

.TONIGHT...East winds around 5 knots. Seas 1 to 2 feet. Wave
Detail: East 2 feet at 9 seconds and east 1 foot at 3 seconds.
Smooth on the intracoastal waters. A chance of showers and
thunderstorms this evening, then a slight chance of showers and
thunderstorms after midnight.
.MONDAY...Northeast winds 5 to 10 knots. Seas 3 to 4 feet. Wave
Detail: East 4 feet at 14 seconds and east 2 feet at 9 seconds. A
light chop on the intracoastal waters. A slight chance of showers
and thunderstorms in the morning, then a chance of showers and
thunderstorms in the afternoon.
.MONDAY NIGHT...Northeast winds 5 to 10 knots. Seas 4 to 6 feet,
occasionally to 8 feet. Wave Detail: East 6 feet at 16 seconds
and northeast 2 feet at 7 seconds. Mostly smooth on the
intracoastal waters. A chance of showers and thunderstorms in the
evening, then a slight chance of showers and thunderstorms after
midnight.
.TUESDAY...North winds 10 to 15 knots. Seas 5 to 7 feet,
occasionally to 9 feet. Wave Detail: East 7 feet at 15 seconds. A
moderate chop on the intracoastal waters. A chance of showers. A
slight chance of thunderstorms in the morning, then a chance of
thunderstorms in the afternoon.
.TUESDAY NIGHT...North winds 10 to 15 knots. Seas 7 to 9 feet,
occasionally to 11 feet. Wave Detail: East 9 feet at 15 seconds.
A light chop on the intracoastal waters. A chance of showers and
thunderstorms.
.WEDNESDAY...North winds 10 to 15 knots. Seas 8 to 10 feet,
occasionally to 13 feet. Wave Detail: East 10 feet at 15 seconds
and northeast 5 feet at 7 seconds. A moderate chop on the
intracoastal waters. A chance of showers and thunderstorms.
.WEDNESDAY NIGHT...Northwest winds 5 to 10 knots, becoming west
after midnight. Seas 7 to 9 feet, occasionally to 11 feet. Mostly
smooth on the intracoastal waters. A chance of showers and
thunderstorms in the evening, then a slight chance of showers and
thunderstorms after midnight.
.THURSDAY...Northwest winds 5 to 10 knots, becoming east in the
afternoon. Seas 6 to 8 feet, occasionally to 10 feet. A light
chop on the intracoastal waters. A slight chance of showers and
thunderstorms in the morning, then a chance of showers and
thunderstorms in the afternoon.
.THURSDAY NIGHT...South winds 5 to 10 knots, becoming west after
midnight. Seas 4 to 6 feet, occasionally to 8 feet. Mostly smooth
on the intracoastal waters. A chance of showers. A chance of
thunderstorms in the evening, then a slight chance of
thunderstorms after midnight.
.FRIDAY...West winds around 5 knots, becoming southeast in the
afternoon. Seas 4 to 5 feet, occasionally to 6 feet. A light chop
on the intracoastal waters. A chance of showers and thunderstorms
in the morning, then showers and thunderstorms likely in the
afternoon.
.FRIDAY NIGHT...South winds 5 to 10 knots, becoming southwest
after midnight. Seas 3 to 5 feet, occasionally to 6 feet. Mostly
smooth on the intracoastal waters. A chance of showers. A chance
of thunderstorms in the evening, then a slight chance of
thunderstorms after midnight.

Winds and waves higher in and near thunderstorms.

$$

AMZ555-180830-
Sebastian Inlet to Jupiter Inlet 0-20 nm-
312 PM EDT Sun Aug 17 2025

.TONIGHT...Southeast winds around 5 knots until early morning,
becoming light. Seas 1 to 2 feet. Wave Detail: Northeast 2 feet
at 8 seconds and southeast 1 foot at 3 seconds. Smooth on the
intracoastal waters. A slight chance of showers and thunderstorms
this evening.
.MONDAY...Northeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: Northeast 2 feet at 8 seconds and east 2 feet at
11 seconds. A light chop on the intracoastal waters. A slight
chance of showers and thunderstorms in the morning, then a chance
of showers and thunderstorms in the afternoon.
.MONDAY NIGHT...Northeast winds 5 to 10 knots. Seas 3 to 4 feet.
Wave Detail: East 3 feet at 17 seconds and northeast 2 feet at
7 seconds. Mostly smooth on the intracoastal waters. A chance of
showers and thunderstorms.
.TUESDAY...North winds 10 to 15 knots. Seas 4 to 6 feet,
occasionally to 8 feet. Wave Detail: East 5 feet at 15 seconds
and north 4 feet at 6 seconds. A moderate chop on the
intracoastal waters. A chance of showers and thunderstorms.
.TUESDAY NIGHT...North winds 10 to 15 knots. Seas 5 to 7 feet,
occasionally to 9 feet. Wave Detail: East 7 feet at 15 seconds
and north 3 feet at 6 seconds. A light chop on the intracoastal
waters. A chance of showers and thunderstorms.
.WEDNESDAY...Northwest winds 10 to 15 knots. Seas 7 to 9 feet,
occasionally to 11 feet. Wave Detail: East 9 feet at 14 seconds.
A moderate chop on the intracoastal waters. A chance of showers
and thunderstorms.
.WEDNESDAY NIGHT...North winds 5 to 10 knots, becoming west after
midnight. Seas 8 to 9 feet, occasionally to 11 feet. Mostly
smooth on the intracoastal waters. A chance of showers and
thunderstorms in the evening, then a slight chance of showers and
thunderstorms after midnight.
.THURSDAY...West winds 5 to 10 knots, becoming southeast in the
afternoon. Seas 6 to 8 feet, occasionally to 10 feet. A light
chop on the intracoastal waters. A chance of showers and
thunderstorms in the morning, then showers and thunderstorms
likely in the afternoon.
.THURSDAY NIGHT...Southwest winds around 5 knots, becoming west
after midnight. Seas 5 to 7 feet, occasionally to 9 feet. Smooth
on the intracoastal waters. A chance of showers and
thunderstorms.
.FRIDAY...West winds around 5 knots, becoming east in the
afternoon. Seas 4 to 6 feet, occasionally to 8 feet. Smooth on
the intracoastal waters. A chance of showers and thunderstorms.
.FRIDAY NIGHT...South winds around 5 knots, becoming southwest
after midnight. Seas 4 to 5 feet, occasionally to 6 feet. Smooth
on the intracoastal waters. A chance of showers. A chance of
thunderstorms in the evening, then a slight chance of
thunderstorms after midnight.

Winds and waves higher in and near thunderstorms.

$$

AMZ570-180830-
Flagler Beach to Volusia-Brevard County Line 20-60 nm-
312 PM EDT Sun Aug 17 2025

.TONIGHT...East winds around 5 knots. Seas 2 to 3 feet. Wave
Detail: East 3 feet at 9 seconds and east 2 feet at 16 seconds. A
chance of showers and thunderstorms.
.MONDAY...Northeast winds 5 to 10 knots. Seas 4 to 6 feet,
occasionally to 8 feet. Wave Detail: East 5 feet at 13 seconds
and northeast 3 feet at 8 seconds. A chance of showers and
thunderstorms.
.MONDAY NIGHT...Northeast winds around 10 knots. Seas 5 to
7 feet, occasionally to 9 feet, building to 7 to 9 feet,
occasionally to 11 feet after midnight. Wave Detail: East 7 feet
at 15 seconds and northeast 3 feet at 7 seconds, becoming east
8 feet at 16 seconds after midnight. A chance of showers. A
chance of thunderstorms in the evening, then a slight chance of
thunderstorms after midnight.
.TUESDAY...Northeast winds 10 to 15 knots. Seas 8 to 10 feet,
occasionally to 13 feet. Wave Detail: East 10 feet at 15 seconds
and northeast 4 feet at 6 seconds. A chance of showers. A slight
chance of thunderstorms in the morning, then a chance of
thunderstorms in the afternoon.
.TUESDAY NIGHT...North winds 10 to 15 knots. Seas 10 to 13 feet,
occasionally to 17 feet. Wave Detail: East 13 feet at 15 seconds
and north 3 feet at 7 seconds. A chance of showers and
thunderstorms.
.WEDNESDAY...North winds 10 to 15 knots. Seas 10 to 13 feet,
occasionally to 17 feet. Wave Detail: East 13 feet at 15 seconds
and north 5 feet at 7 seconds. A chance of showers and
thunderstorms.
.WEDNESDAY NIGHT...North winds 10 to 15 knots, becoming northwest
5 to 10 knots after midnight. Seas 9 to 11 feet, occasionally to
14 feet. A chance of showers and thunderstorms.
.THURSDAY...Northwest winds 5 to 10 knots, becoming north in the
afternoon. Seas 7 to 9 feet, occasionally to 11 feet. A chance of
showers and thunderstorms.
.THURSDAY NIGHT...South winds 5 to 10 knots, becoming southwest
after midnight. Seas 6 to 8 feet, occasionally to 10 feet. A
chance of showers with a slight chance of thunderstorms.
.FRIDAY...West winds 5 to 10 knots, becoming southeast in the
afternoon. Seas 5 to 6 feet, occasionally to 8 feet. A chance of
thunderstorms. A chance of showers in the morning, then showers
likely in the afternoon.
.FRIDAY NIGHT...South winds 5 to 10 knots, becoming southwest
after midnight. Seas 4 to 6 feet, occasionally to 8 feet. A
chance of showers and thunderstorms.

Winds and seas higher in and near thunderstorms.

$$

AMZ572-180830-
Volusia-Brevard County Line to Sebastian Inlet 20-60 nm-
312 PM EDT Sun Aug 17 2025

.TONIGHT...East winds around 5 knots. Seas 2 to 3 feet. Wave
Detail: East 3 feet at 9 seconds and east 2 feet at 16 seconds. A
chance of showers and thunderstorms.
.MONDAY...North winds 5 to 10 knots. Seas 3 to 4 feet, building
to 4 to 6 feet, occasionally to 8 feet in the afternoon. Wave
Detail: East 4 feet at 14 seconds and northeast 2 feet at
8 seconds, becoming east 5 feet at 15 seconds and northeast
3 feet at 7 seconds in the afternoon. A chance of showers and
thunderstorms.
.MONDAY NIGHT...Northeast winds around 10 knots. Seas 6 to
8 feet, occasionally to 10 feet. Wave Detail: East 8 feet at
16 seconds and northeast 3 feet at 7 seconds. A chance of showers
and thunderstorms.
.TUESDAY...North winds 10 to 15 knots. Seas 7 to 9 feet,
occasionally to 11 feet. Wave Detail: East 8 feet at 16 seconds.
A chance of showers and thunderstorms.
.TUESDAY NIGHT...North winds 10 to 15 knots. Seas 9 to 11 feet,
occasionally to 14 feet. Wave Detail: East 11 feet at 15 seconds
and north 6 feet at 6 seconds. A chance of showers and
thunderstorms.
.WEDNESDAY...Northwest winds 10 to 15 knots. Seas 10 to 12 feet,
occasionally to 15 feet. Wave Detail: East 12 feet at 15 seconds
and north 5 feet at 7 seconds. A chance of showers and
thunderstorms.
.WEDNESDAY NIGHT...Northwest winds 10 to 15 knots, diminishing to
5 to 10 knots after midnight. Seas 9 to 11 feet, occasionally to
14 feet. A chance of showers and thunderstorms.
.THURSDAY...West winds 5 to 10 knots, becoming southwest in the
afternoon. Seas 7 to 9 feet, occasionally to 11 feet. A chance of
showers and thunderstorms.
.THURSDAY NIGHT...South winds 5 to 10 knots, becoming west after
midnight. Seas 6 to 8 feet, occasionally to 10 feet. A chance of
showers and thunderstorms.
.FRIDAY...West winds 5 to 10 knots, becoming south in the
afternoon. Seas 5 to 6 feet, occasionally to 8 feet. A chance of
showers and thunderstorms.
.FRIDAY NIGHT...South winds 5 to 10 knots. Seas 4 to 6 feet,
occasionally to 8 feet. A chance of showers and thunderstorms.

Winds and seas higher in and near thunderstorms.

$$

AMZ575-180830-
Sebastian Inlet to Jupiter Inlet 20-60 nm-
312 PM EDT Sun Aug 17 2025

.TONIGHT...Southeast winds around 5 knots. Seas 1 to 2 feet. Wave
Detail: East 2 feet at 8 seconds and southeast 1 foot at
3 seconds. A slight chance of showers and thunderstorms.
.MONDAY...North winds 5 to 10 knots. Seas 3 to 4 feet. Wave
Detail: Northeast 3 feet at 7 seconds and east 3 feet at
12 seconds. A slight chance of showers and thunderstorms in the
morning, then a chance of showers and thunderstorms in the
afternoon.
.MONDAY NIGHT...Northeast winds 5 to 10 knots. Seas 4 to 6 feet,
occasionally to 8 feet. Wave Detail: East 5 feet at 16 seconds
and northeast 3 feet at 6 seconds. A chance of showers and
thunderstorms.
.TUESDAY...North winds 10 to 15 knots. Seas 5 to 7 feet,
occasionally to 9 feet. Wave Detail: East 6 feet at 16 seconds
and northeast 5 feet at 5 seconds. A chance of showers and
thunderstorms.
.TUESDAY NIGHT...North winds 10 to 15 knots. Seas 6 to 8 feet,
occasionally to 10 feet. Wave Detail: East 8 feet at 14 seconds
and north 5 feet at 7 seconds. A chance of showers and
thunderstorms.
.WEDNESDAY...Northwest winds 10 to 15 knots. Seas 9 to 11 feet,
occasionally to 14 feet. Wave Detail: Northeast 11 feet at
14 seconds and north 5 feet at 7 seconds. A chance of showers and
thunderstorms.
.WEDNESDAY NIGHT...Northwest winds 5 to 10 knots. Seas 9 to
11 feet, occasionally to 14 feet. A chance of showers and
thunderstorms.
.THURSDAY...West winds 5 to 10 knots, becoming southwest in the
afternoon. Seas 7 to 9 feet, occasionally to 11 feet. A chance of
showers and thunderstorms.
.THURSDAY NIGHT...South winds 5 to 10 knots, becoming southwest
after midnight. Seas 6 to 8 feet, occasionally to 10 feet. A
chance of showers and thunderstorms.
.FRIDAY...West winds 5 to 10 knots, becoming southwest in the
afternoon. Seas 5 to 6 feet, occasionally to 8 feet. A chance of
showers and thunderstorms.
.FRIDAY NIGHT...Southwest winds 5 to 10 knots. Seas 4 to 6 feet,
occasionally to 8 feet. A chance of showers and thunderstorms.

Winds and seas higher in and near thunderstorms.

$$