599
FZUS52 KMLB 180654
CWFMLB

Coastal Waters Forecast for East Central Florida
National Weather Service Melbourne FL
254 AM EDT Mon Aug 18 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.

ANZ500-182030-
Synopsis for Flagler Beach to Jupiter Inlet out to 60 nm
254 AM EDT Mon Aug 18 2025

.SYNOPSIS...Major Hurricane Erin is forecast to turn northward
while remaining east of Florida through Wednesday then turn
northeast and out to sea. Boating conditions will deteriorate
today and remain hazardous through mid-week due to large swells
from Erin along with breezy north winds. Very dangerous boating
conditions will exist near inlets especially during the outgoing
tide cycles.

.GULF STREAM HAZARDS...Seas building 7 to 9 feet tonight north of
Sebastian Inlet.

The approximate location of the west wall of the Gulf Stream based on
the Real Time Ocean Forecast System as of Monday, August 18th, 2025.

40 nautical miles east of Ponce Inlet.
28 nautical miles east of Port Canaveral.
24 nautical miles east of Sebastian Inlet.
17 nautical miles east of Fort Pierce Inlet.
 9 nautical miles east of Saint Lucie Inlet.

$$

AMZ550-182030-
Flagler Beach to Volusia-Brevard County Line 0-20 nm-
254 AM EDT Mon Aug 18 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM TUESDAY MORNING THROUGH
THURSDAY EVENING...

.TODAY...Northeast winds 5 to 10 knots, becoming around 10 knots
late. 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 this morning, then
showers and thunderstorms likely this afternoon.
.TONIGHT...Northeast winds 5 to 10 knots. Seas 4 to 6 feet,
occasionally to 8 feet. Wave Detail: East 6 feet at 15 seconds
and northeast 2 feet at 7 seconds. Mostly smooth on the
intracoastal waters. A slight chance of thunderstorms in the
evening. A slight chance of showers.
.TUESDAY...Northeast winds 10 to 15 knots, becoming north 15 to
20 knots in the afternoon. Seas 6 to 8 feet, occasionally to
10 feet. Wave Detail: East 7 feet at 15 seconds. Choppy 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 16 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 15 to 20 knots. Seas 9 to 11 feet,
occasionally to 14 feet. Wave Detail: East 11 feet at 15 seconds
and northeast 7 feet at 8 seconds. Choppy on the intracoastal
waters. A chance of showers and thunderstorms in the morning,
then showers and thunderstorms likely in the afternoon.
.WEDNESDAY NIGHT...North winds 10 to 15 knots, becoming northwest
5 to 10 knots after midnight. Seas 8 to 10 feet, occasionally to
13 feet. Wave Detail: East 10 feet at 14 seconds and northeast
4 feet at 7 seconds. A light chop 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 northeast 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 around 5 knots, becoming southwest
after midnight. Seas 5 to 7 feet, occasionally to 9 feet. Smooth
on the intracoastal waters. A chance of showers and thunderstorms
in the evening, then a slight chance of showers and thunderstorms
after midnight.
.FRIDAY...Northwest winds around 5 knots, becoming east in the
afternoon. Seas 5 to 6 feet, occasionally to 8 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...Southeast winds 5 to 10 knots, becoming southwest
after midnight. Seas 4 to 5 feet, occasionally to 6 feet. Mostly
smooth on the intracoastal waters. A chance of thunderstorms.
Showers likely in the evening, then a chance of showers after
midnight.

Winds and waves higher in and near thunderstorms.

$$

AMZ552-182030-
Volusia-Brevard County Line to Sebastian Inlet 0-20 nm-
254 AM EDT Mon Aug 18 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM TUESDAY MORNING THROUGH
THURSDAY EVENING...

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

Winds and waves higher in and near thunderstorms.

$$

AMZ555-182030-
Sebastian Inlet to Jupiter Inlet 0-20 nm-
254 AM EDT Mon Aug 18 2025

.TODAY...North winds 5 to 10 knots, becoming northeast late. 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
chance of showers and thunderstorms this afternoon.
.TONIGHT...Northeast winds 5 to 10 knots. Seas 3 to 4 feet. Wave
Detail: Northeast 2 feet at 7 seconds and east 2 feet at
15 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 18 seconds
and north 4 feet at 6 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 5 to 7 feet,
occasionally to 9 feet. Wave Detail: East 7 feet at 15 seconds
and north 4 feet at 6 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...Northwest winds 10 to 15 knots. Seas 7 to 9 feet,
occasionally to 11 feet. Wave Detail: East 9 feet at 15 seconds.
A moderate chop on the intracoastal waters. A chance of showers
and thunderstorms in the morning, then showers and thunderstorms
likely in the afternoon.
.WEDNESDAY NIGHT...Northwest winds 5 to 10 knots, becoming west
after midnight. Seas 8 to 9 feet, occasionally to 11 feet. Wave
Detail: Northeast 9 feet at 14 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.
.THURSDAY...Northwest winds 5 to 10 knots, becoming southeast in
the afternoon. Seas 7 to 9 feet, occasionally to 11 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 5 to 10 knots, becoming west
after midnight. Seas 6 to 8 feet, occasionally to 10 feet. Mostly
smooth on the intracoastal waters. A chance of showers and
thunderstorms.
.FRIDAY...Northwest winds 5 to 10 knots, becoming east in the
afternoon. Seas 6 to 7 feet, occasionally to 9 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...Southeast winds around 5 knots, becoming
southwest after midnight. Seas 5 to 7 feet, occasionally to
9 feet. Smooth on the intracoastal waters. A chance of
thunderstorms. Showers likely in the evening, then a chance of
showers after midnight.

Winds and waves higher in and near thunderstorms.

$$

AMZ570-182030-
Flagler Beach to Volusia-Brevard County Line 20-60 nm-
254 AM EDT Mon Aug 18 2025

...SMALL CRAFT SHOULD EXERCISE CAUTION...
...SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH
THURSDAY EVENING...

.TODAY...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.
.TONIGHT...Northeast winds 10 to 15 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 15 knots. Seas 7 to 9 feet,
occasionally to 11 feet, building to 9 to 11 feet, occasionally to
14 feet in the afternoon. Wave Detail: East 9 feet at 15 seconds,
becoming east 10 feet at 16 seconds in the afternoon. A chance of
showers. A slight chance of thunderstorms in the morning, then a
chance of thunderstorms in the afternoon.
.TUESDAY NIGHT...North winds around 15 knots. Seas 10 to 13 feet,
occasionally to 17 feet. Wave Detail: East 13 feet at 16 seconds
and north 4 feet at 7 seconds. Showers likely with a chance of
thunderstorms in the evening, then a chance of showers with a
slight chance of thunderstorms after midnight.
.WEDNESDAY...North winds 15 to 20 knots. Seas 11 to 14 feet,
occasionally to 18 feet. Wave Detail: East 14 feet at 15 seconds
and north 6 feet at 7 seconds. Showers likely. A chance of
thunderstorms in the morning, then thunderstorms likely in the
afternoon.
.WEDNESDAY NIGHT...Northwest winds 10 to 15 knots. Seas 10 to
13 feet, occasionally to 17 feet. Wave Detail: East 12 feet at
14 seconds and north 6 feet at 7 seconds. A chance of showers and
thunderstorms.
.THURSDAY...Northwest winds around 10 knots, becoming north in
the afternoon. Seas 9 to 11 feet, occasionally to 14 feet. A
chance of showers and thunderstorms.
.THURSDAY NIGHT...South winds 5 to 10 knots, becoming southwest
after midnight. Seas 7 to 9 feet, occasionally to 11 feet. A
chance of showers and thunderstorms.
.FRIDAY...Northwest winds 5 to 10 knots, becoming east in the
afternoon. Seas 6 to 8 feet, occasionally to 10 feet. Showers
likely. A chance of thunderstorms in the morning, then
thunderstorms likely in the afternoon.
.FRIDAY NIGHT...Southeast winds 5 to 10 knots, becoming south
after midnight. Seas 5 to 7 feet, occasionally to 9 feet. Showers
likely with a chance of thunderstorms.

Winds and seas higher in and near thunderstorms.

$$

AMZ572-182030-
Volusia-Brevard County Line to Sebastian Inlet 20-60 nm-
254 AM EDT Mon Aug 18 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH
THURSDAY EVENING...

.TODAY...Northeast winds 5 to 10 knots. Seas 3 to 5 feet,
occasionally to 6 feet. Wave Detail: East 4 feet at 14 seconds
and north 3 feet at 6 seconds. A chance of showers and
thunderstorms.
.TONIGHT...Northeast winds around 10 knots. Seas 6 to 8 feet,
occasionally to 10 feet. Wave Detail: East 8 feet at 16 seconds.
A chance of showers and thunderstorms.
.TUESDAY...North winds 10 to 15 knots. Seas 8 to 10 feet,
occasionally to 13 feet. Wave Detail: East 9 feet at 16 seconds.
A chance of thunderstorms. Showers likely in the morning, then a
chance of showers in the afternoon.
.TUESDAY NIGHT...North winds around 15 knots. Seas 10 to 12 feet,
occasionally to 15 feet. Wave Detail: East 11 feet at 15 seconds
and north 6 feet at 6 seconds. Showers likely with a chance of
thunderstorms in the evening, then a chance of showers with a
slight chance of thunderstorms after midnight.
.WEDNESDAY...Northwest winds 15 to 20 knots. Seas 10 to 13 feet,
occasionally to 17 feet. Wave Detail: East 13 feet at 15 seconds
and north 6 feet at 7 seconds. Showers likely. A chance of
thunderstorms in the morning, then thunderstorms likely in the
afternoon.
.WEDNESDAY NIGHT...Northwest winds 10 to 15 knots. Seas 10 to
13 feet, occasionally to 17 feet, subsiding to 9 to 11 feet,
occasionally to 14 feet after midnight. Wave Detail: East 12 feet
at 14 seconds and north 5 feet at 7 seconds, becoming northeast
11 feet at 13 seconds and north 4 feet at 7 seconds after
midnight. A chance of showers and thunderstorms.
.THURSDAY...Northwest winds 5 to 10 knots. Seas 9 to 11 feet,
occasionally to 14 feet. A chance of showers and thunderstorms.
.THURSDAY NIGHT...Southwest winds 5 to 10 knots, becoming west
after midnight. Seas 7 to 9 feet, occasionally to 11 feet. A
chance of showers and thunderstorms.
.FRIDAY...Northwest winds 5 to 10 knots, becoming east in the
afternoon. Seas 6 to 8 feet, occasionally to 10 feet. Showers
likely. A chance of thunderstorms in the morning, then
thunderstorms likely in the afternoon.
.FRIDAY NIGHT...Southeast winds 5 to 10 knots, becoming southwest
after midnight. Seas 6 to 7 feet, occasionally to 9 feet. Showers
likely with a chance of thunderstorms.

Winds and seas higher in and near thunderstorms.

$$

AMZ575-182030-
Sebastian Inlet to Jupiter Inlet 20-60 nm-
254 AM EDT Mon Aug 18 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM TUESDAY MORNING THROUGH
THURSDAY EVENING...

.TODAY...North winds 5 to 10 knots. Seas 3 to 4 feet. Wave
Detail: Northeast 3 feet at 7 seconds and east 3 feet at
13 seconds. A chance of showers and thunderstorms this afternoon.
.TONIGHT...Northeast winds 5 to 10 knots. Seas 4 to 6 feet,
occasionally to 8 feet. Wave Detail: East 4 feet at 15 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: North 6 feet at 6 seconds
and east 6 feet at 16 seconds. Showers likely with a chance of
thunderstorms.
.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 north 6 feet at 7 seconds. Showers likely with a chance of
thunderstorms in the evening, then a chance of showers with a
slight chance of thunderstorms after midnight.
.WEDNESDAY...Northwest winds 15 to 20 knots, diminishing to 10 to
15 knots in the afternoon. Seas 9 to 11 feet, occasionally to
14 feet. Wave Detail: East 11 feet at 14 seconds and north 6 feet
at 7 seconds. Showers likely. A chance of thunderstorms in the
morning, then thunderstorms likely in the afternoon.
.WEDNESDAY NIGHT...Northwest winds around 10 knots. Seas 9 to
11 feet, occasionally to 14 feet. Wave Detail: Northeast 11 feet
at 13 seconds and north 4 feet at 7 seconds. A chance of showers
and thunderstorms.
.THURSDAY...West winds around 10 knots, becoming southwest in the
afternoon. Seas 8 to 10 feet, occasionally to 13 feet. A chance
of showers and thunderstorms in the morning, then showers and
thunderstorms likely in the afternoon.
.THURSDAY NIGHT...Southwest winds 5 to 10 knots, becoming west
after midnight. Seas 7 to 9 feet, occasionally to 11 feet. A
chance of showers and thunderstorms.
.FRIDAY...Northwest winds 5 to 10 knots, becoming southeast in
the afternoon. Seas 6 to 7 feet, occasionally to 9 feet. Showers
likely. A chance of thunderstorms in the morning, then
thunderstorms likely in the afternoon.
.FRIDAY NIGHT...Southeast winds 5 to 10 knots, becoming southwest
after midnight. Seas 6 to 7 feet, occasionally to 9 feet. Showers
likely with a chance of thunderstorms.

Winds and seas higher in and near thunderstorms.

$$