987
FZUS52 KMLB 181906
CWFMLB

Coastal Waters Forecast for East Central Florida
National Weather Service Melbourne FL
306 PM 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.

ANZ500-190815-
Synopsis for Flagler Beach to Jupiter Inlet out to 60 nm
306 PM 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.
30 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.

$$

AMZ550-190815-
Flagler Beach to Volusia-Brevard County Line 0-20 nm-
306 PM EDT Mon Aug 18 2025

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

.TONIGHT...Northeast winds around 10 knots. Seas 4 to 6 feet,
occasionally to 8 feet. Wave Detail: East 6 feet at 16 seconds
and northeast 3 feet at 7 seconds. Mostly smooth on the
intracoastal waters. A chance of showers and thunderstorms this
evening.
.TUESDAY...Northeast winds 10 to 15 knots, increasing to 15 to
20 knots in the afternoon. Seas 6 to 8 feet, occasionally to
10 feet. Wave Detail: East 8 feet at 16 seconds. Choppy on the
intracoastal waters. A chance of showers and thunderstorms.
.TUESDAY NIGHT...North winds 10 to 15 knots. Seas 8 to 10 feet,
occasionally to 13 feet. Wave Detail: East 10 feet at 16 seconds.
A light chop on the intracoastal waters. A chance of showers and
thunderstorms.
.WEDNESDAY...North winds 15 to 20 knots. Seas 9 to 11 feet,
occasionally to 14 feet. Wave Detail: East 11 feet at 16 seconds.
Choppy on the intracoastal waters. Showers likely with a chance
of thunderstorms.
.WEDNESDAY NIGHT...North winds 10 to 15 knots, becoming west 5 to
10 knots after midnight. Seas 9 to 11 feet, occasionally to
14 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 7 to 9 feet, occasionally to 11 feet. Wave
Detail: Northeast 9 feet at 13 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.
.THURSDAY NIGHT...Southeast winds around 5 knots, becoming
southwest after midnight. Seas 6 to 8 feet, occasionally to
10 feet. Smooth on the intracoastal waters. A chance of showers
and thunderstorms.
.FRIDAY...North 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 chance of thunderstorms. A chance
of showers in the morning, then showers likely in the afternoon.
.FRIDAY NIGHT...Southeast winds 5 to 10 knots. Seas 4 to 6 feet,
occasionally to 8 feet. Mostly smooth on the intracoastal waters.
A chance of showers and thunderstorms.
.SATURDAY...East winds 5 to 10 knots. Seas 4 to 5 feet,
occasionally to 6 feet. A light chop on the intracoastal waters.
Showers likely with a chance of thunderstorms.
.SATURDAY NIGHT...Southeast winds around 5 knots. Seas 3 to
4 feet. Smooth on the intracoastal waters. A chance of showers
and thunderstorms.

Winds and waves higher in and near thunderstorms.

$$

AMZ552-190815-
Volusia-Brevard County Line to Sebastian Inlet 0-20 nm-
306 PM EDT Mon Aug 18 2025

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

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

Winds and waves higher in and near thunderstorms.

$$

AMZ555-190815-
Sebastian Inlet to Jupiter Inlet 0-20 nm-
306 PM EDT Mon Aug 18 2025

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

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

Winds and waves higher in and near thunderstorms.

$$

AMZ570-190815-
Flagler Beach to Volusia-Brevard County Line 20-60 nm-
306 PM EDT Mon Aug 18 2025

...SMALL CRAFT SHOULD EXERCISE CAUTION THROUGH 8 PM...
...SMALL CRAFT ADVISORY IN EFFECT FROM 8 PM EDT THIS EVENING
THROUGH THURSDAY EVENING...

.TONIGHT...Northeast winds 10 to 15 knots. Seas 7 to 9 feet,
occasionally to 11 feet. Wave Detail: East 8 feet at 16 seconds
and northeast 4 feet at 7 seconds. A chance of showers and
thunderstorms.
.TUESDAY...Northeast winds 10 to 15 knots. Seas 9 to 11 feet,
occasionally to 14 feet. Wave Detail: East 11 feet at 16 seconds
and north 6 feet at 6 seconds. A chance of showers and
thunderstorms.
.TUESDAY NIGHT...North winds 10 to 15 knots. Seas 11 to 14 feet,
occasionally to 18 feet. Wave Detail: East 13 feet at 17 seconds.
A chance of thunderstorms. A chance of showers in the evening,
then showers likely after midnight.
.WEDNESDAY...North winds 15 to 20 knots. Seas 11 to 15 feet,
occasionally to 19 feet. Wave Detail: East 14 feet at 15 seconds
and north 6 feet at 7 seconds. A chance of thunderstorms. Showers
likely in the morning, then a chance of showers 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 5 feet at 7 seconds. A chance of showers and
thunderstorms.
.THURSDAY...Northwest winds 10 to 15 knots, becoming north 5 to
10 knots in the afternoon. Seas 9 to 11 feet, occasionally to
14 feet. Wave Detail: Northeast 11 feet at 13 seconds. A chance
of showers and thunderstorms.
.THURSDAY NIGHT...East winds around 5 knots, becoming west after
midnight. Seas 8 to 10 feet, occasionally to 13 feet. A chance of
showers and thunderstorms.
.FRIDAY...North winds 5 to 10 knots, becoming east in the
afternoon. Seas 7 to 8 feet, occasionally to 10 feet. Showers
likely with a chance of thunderstorms.
.FRIDAY NIGHT...East winds 5 to 10 knots. Seas 6 to 7 feet,
occasionally to 9 feet. Showers likely with a chance of
thunderstorms.
.SATURDAY...East winds 5 to 10 knots. Seas 5 to 6 feet,
occasionally to 8 feet. Showers likely with a chance of
thunderstorms.
.SATURDAY NIGHT...Southeast winds 5 to 10 knots, becoming south
after midnight. Seas 4 to 5 feet, occasionally to 6 feet. Showers
likely with a chance of thunderstorms.

Winds and seas higher in and near thunderstorms.

$$

AMZ572-190815-
Volusia-Brevard County Line to Sebastian Inlet 20-60 nm-
306 PM EDT Mon Aug 18 2025

...SMALL CRAFT SHOULD EXERCISE CAUTION THROUGH 8 PM...
...SMALL CRAFT ADVISORY IN EFFECT FROM 8 PM EDT THIS EVENING
THROUGH THURSDAY EVENING...

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

Winds and seas higher in and near thunderstorms.

$$

AMZ575-190815-
Sebastian Inlet to Jupiter Inlet 20-60 nm-
306 PM EDT Mon Aug 18 2025

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

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

Winds and seas higher in and near thunderstorms.

$$