National Weather Service Marine Forecast FZUS52 KMLB

FZUS52 KMLB 201308
CWFMLB

Coastal Waters Forecast for East Central Florida
National Weather Service Melbourne FL
908 AM EDT Thu Aug 20 2026

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.

AMZ500-210215
Synopsis for Flagler Beach to Jupiter Inlet out to 60 nm 908 AM EDT Thu Aug 20 2026

SYNOPSIS
Generally favorable boating conditions prevail outside of offshore moving storms. Westerly to southwesterly flow will continue between a front stalled across the Southeast US and high pressure over the Atlantic through the weekend. Winds shift south to southeast in the afternoons and evenings as the sea breeze develops. Stronger storms will be capable of wind gusts 34 kts or greater, frequent cloud to water lightning, heavy downpours, and locally higher seas.

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 Thursday, August 20th, 2026.

46 nautical miles east of Ponce Inlet. 31 nautical miles east of Port Canaveral. 24 nautical miles east of Sebastian Inlet. 16 nautical miles east of Fort Pierce Inlet. 9 nautical miles east of Saint Lucie Inlet.


AMZ550-210215
Flagler Beach to Volusia-Brevard County Line 0-20 nm
908 AM EDT Thu Aug 20 2026

REST OF TODAY
West winds around 5 knots, becoming southeast this afternoon. Seas 1 to 2 feet. Wave Detail: East 1 foot at 4 seconds and east 1 foot at 9 seconds. A light chop on the intracoastal waters. A chance of showers and thunderstorms this afternoon.

TONIGHT
Southwest winds 5 to 10 knots. Seas 1 to 2 feet. Wave Detail: Southeast 1 foot at 3 seconds and east 1 foot at 8 seconds. Mostly smooth on the intracoastal waters.

FRIDAY
South winds around 5 knots, becoming southeast in the afternoon. Seas 1 to 2 feet. Wave Detail: Southeast 2 feet at 3 seconds and east 1 foot at 9 seconds. A light chop on the intracoastal waters. A chance of showers and thunderstorms in the afternoon.

FRIDAY NIGHT
Southwest winds 5 to 10 knots. Seas 2 feet. Wave Detail: Southeast 2 feet at 4 seconds and east 1 foot at 9 seconds. Mostly smooth on the intracoastal waters. A slight chance of showers and thunderstorms in the evening.

SATURDAY
Southwest winds 5 to 10 knots, becoming south in the afternoon. Seas 2 feet. Wave Detail: South 2 feet at 4 seconds and east 1 foot at 9 seconds. A light chop on the intracoastal waters. Showers likely with a chance of thunderstorms in the afternoon.

SATURDAY NIGHT
Southwest winds 5 to 10 knots. Seas 2 feet. Wave Detail: Southeast 2 feet at 4 seconds and east 1 foot at 9 seconds. Mostly smooth on the intracoastal waters. A slight chance of showers and thunderstorms in the evening.

SUNDAY
Southwest winds 5 to 10 knots, becoming south in the afternoon. Seas 2 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.

SUNDAY NIGHT
Southwest winds 5 to 10 knots. Seas 2 feet. Mostly smooth on the intracoastal waters. A slight chance of showers and thunderstorms in the evening.

MONDAY
Southwest winds around 5 knots, becoming southeast in the afternoon. Seas 2 feet. A light chop on the intracoastal waters. A slight chance of showers and thunderstorms in the afternoon.

MONDAY NIGHT
South winds 5 to 10 knots. Seas 1 to 2 feet. Mostly smooth on the intracoastal waters. A slight chance of showers and thunderstorms in the evening.

Winds and waves higher in and near thunderstorms.


AMZ552-210215
Volusia-Brevard County Line to Sebastian Inlet 0-20 nm
908 AM EDT Thu Aug 20 2026

REST OF TODAY
Southwest winds around 5 knots, becoming southeast this afternoon. Seas 1 to 2 feet. Wave Detail: Southeast 1 foot at 3 seconds and east 1 foot at 9 seconds. A light chop on the intracoastal waters. A slight chance of showers and thunderstorms this afternoon.

TONIGHT
South winds 5 to 10 knots. Seas 1 to 2 feet. Wave Detail: Southeast 1 foot at 3 seconds and east 1 foot at 9 seconds. Mostly smooth on the intracoastal waters. A slight chance of showers and thunderstorms in the evening.

FRIDAY
South winds around 5 knots, becoming southeast in the afternoon. Seas 1 to 2 feet. Wave Detail: Southeast 2 feet at 3 seconds and east 1 foot at 9 seconds. A light chop on the intracoastal waters. A chance of showers and thunderstorms in the afternoon.

FRIDAY NIGHT
Southwest winds around 10 knots. Seas 2 feet. Wave Detail: Southeast 2 feet at 4 seconds and east 1 foot at 9 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.

SATURDAY
Southwest winds 5 to 10 knots, becoming south in the afternoon. Seas 2 feet. Wave Detail: Southeast 2 feet at 4 seconds and east 1 foot at 9 seconds. A light chop on the intracoastal waters. A chance of showers and thunderstorms in the afternoon.

SATURDAY NIGHT
Southwest winds 5 to 10 knots. Seas 2 feet. Wave Detail: Southeast 2 feet at 4 seconds and east 1 foot at 9 seconds. Mostly smooth on the intracoastal waters. A chance of showers with a slight chance of thunderstorms in the evening.

SUNDAY
Southwest winds 5 to 10 knots, becoming southeast in the afternoon. Seas 2 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.

SUNDAY NIGHT
South winds 5 to 10 knots. Seas 2 feet. Mostly smooth on the intracoastal waters. A slight chance of showers and thunderstorms in the evening.

MONDAY
Southwest winds around 5 knots, becoming southeast in the afternoon. Seas 1 to 2 feet. A light chop on the intracoastal waters. A slight chance of showers and thunderstorms in the afternoon.

MONDAY NIGHT
South winds 5 to 10 knots. Seas 1 to 2 feet. Mostly smooth on the intracoastal waters. A slight chance of showers and thunderstorms in the evening.

Winds and waves higher in and near thunderstorms.


AMZ555-210215
Sebastian Inlet to Jupiter Inlet 0-20 nm
908 AM EDT Thu Aug 20 2026

REST OF TODAY
Southwest winds around 5 knots, becoming southeast late this morning and afternoon. Seas 1 to 2 feet. Wave Detail: Southeast 1 foot at 3 seconds and northeast 1 foot at 8 seconds. A light chop on the intracoastal waters. A slight chance of showers and thunderstorms this afternoon.

TONIGHT
South winds 5 to 10 knots. Seas 1 to 2 feet. Wave Detail: Southeast 1 foot at 3 seconds and northeast 1 foot at 8 seconds. Mostly smooth on the intracoastal waters. A slight chance of showers and thunderstorms in the evening.

FRIDAY
South winds around 5 knots, becoming 5 to 10 knots in the afternoon. Seas 1 to 2 feet. Wave Detail: Southeast 1 foot at 3 seconds and northeast 1 foot at 8 seconds. A light chop on the intracoastal waters. A chance of showers and thunderstorms in the afternoon.

FRIDAY NIGHT
South winds 5 to 10 knots. Seas 1 to 2 feet. Wave Detail: Southeast 2 feet at 3 seconds and northeast 1 foot at 8 seconds. Mostly smooth on the intracoastal waters. A slight chance of showers and thunderstorms in the evening.

SATURDAY
Southwest winds 5 to 10 knots, becoming southeast in the afternoon. Seas 1 to 2 feet. Wave Detail: Southeast 2 feet at 3 seconds and northeast 1 foot at 10 seconds. A light chop on the intracoastal waters. A chance of showers and thunderstorms in the afternoon.

SATURDAY NIGHT
South winds 5 to 10 knots. Seas 1 to 2 feet. Wave Detail: Southeast 2 feet at 3 seconds and northeast 1 foot at 9 seconds. Mostly smooth on the intracoastal waters. A slight chance of showers and thunderstorms in the evening.

SUNDAY
Southwest winds around 5 knots, becoming southeast in the afternoon. Seas 1 to 2 feet. A light chop on the intracoastal waters. A slight chance of showers and thunderstorms in the afternoon.

SUNDAY NIGHT
South winds 5 to 10 knots. Seas 1 to 2 feet. Mostly smooth on the intracoastal waters. A slight chance of showers and thunderstorms in the evening.

MONDAY
South winds around 5 knots, becoming southeast in the afternoon. Seas 1 to 2 feet. A light chop on the intracoastal waters. A slight chance of showers and thunderstorms in the afternoon.

MONDAY NIGHT
South winds 5 to 10 knots. Seas 1 to 2 feet. Mostly smooth on the intracoastal waters. A slight chance of showers and thunderstorms in the evening.

Winds and waves higher in and near thunderstorms.


AMZ570-210215
Flagler Beach to Volusia-Brevard County Line 20-60 nm
908 AM EDT Thu Aug 20 2026

REST OF TODAY
Southwest winds around 5 knots, becoming south this afternoon. Seas 2 feet. Wave Detail: East 2 feet at 9 seconds and northwest 1 foot at 2 seconds.

TONIGHT
South winds 5 to 10 knots. Seas 2 feet. Wave Detail: South 2 feet at 3 seconds and east 2 feet at 9 seconds.

FRIDAY
Southwest winds around 5 knots, becoming south 10 to 15 knots in the afternoon. Seas 2 feet. Wave Detail: Southeast 2 feet at 3 seconds and east 2 feet at 9 seconds. A slight chance of showers and thunderstorms in the afternoon.

FRIDAY NIGHT
Southwest winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: South 2 feet at 3 seconds and east 2 feet at 9 seconds. A chance of showers and thunderstorms.

SATURDAY
Southwest winds 5 to 10 knots, becoming south 10 to 15 knots in the afternoon. Seas 2 to 3 feet. Wave Detail: Southwest 2 feet at 4 seconds and east 1 foot at 9 seconds. A slight chance of showers and thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon.

SATURDAY NIGHT
Southwest winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: South 2 feet at 4 seconds and northeast 1 foot at 3 seconds. A chance of showers and thunderstorms in the evening, then a slight chance of showers and thunderstorms after midnight.

SUNDAY
Southwest winds 5 to 10 knots, becoming south in the afternoon. Seas 2 to 3 feet. A chance of showers and thunderstorms.

SUNDAY NIGHT
Southwest winds around 10 knots. Seas 2 to 3 feet. A slight chance of showers and thunderstorms.

MONDAY
Southwest winds 5 to 10 knots, becoming south in the afternoon. Seas 2 feet. A slight chance of showers and thunderstorms.

MONDAY NIGHT
South winds 5 to 10 knots. Seas 2 feet. A slight chance of showers and thunderstorms.

Winds and seas higher in and near thunderstorms.


AMZ572-210215
Volusia-Brevard County Line to Sebastian Inlet 20-60 nm
908 AM EDT Thu Aug 20 2026

REST OF TODAY
Southwest winds around 5 knots, becoming south this afternoon. Seas 2 feet. Wave Detail: East 2 feet at 9 seconds and southeast 1 foot at 3 seconds.

TONIGHT
South winds 5 to 10 knots. Seas 2 feet. Wave Detail: East 2 feet at 9 seconds and south 1 foot at 3 seconds.

FRIDAY
Southwest winds 5 to 10 knots, becoming south in the afternoon. Seas 2 feet. Wave Detail: East 2 feet at 9 seconds and north 1 foot at 3 seconds. A slight chance of showers and thunderstorms in the afternoon.

FRIDAY NIGHT
South winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: South 2 feet at 3 seconds and east 2 feet at 9 seconds. A chance of showers and thunderstorms.

SATURDAY
Southwest winds 5 to 10 knots, becoming south 10 to 15 knots in the afternoon. Seas 2 to 3 feet. Wave Detail: South 2 feet at 4 seconds and east 1 foot at 9 seconds. A slight chance of showers and thunderstorms.

SATURDAY NIGHT
South winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: South 2 feet at 4 seconds and east 2 feet at 9 seconds. A chance of showers and thunderstorms in the evening, then a slight chance of showers and thunderstorms after midnight.

SUNDAY
Southwest winds 5 to 10 knots, becoming south in the afternoon. Seas 2 to 3 feet. A slight chance of showers and thunderstorms.

SUNDAY NIGHT
South winds 10 to 15 knots. Seas 2 feet. A slight chance of showers and thunderstorms.

MONDAY
Southwest winds 5 to 10 knots, becoming south in the afternoon. Seas 2 feet. A slight chance of showers and thunderstorms.

MONDAY NIGHT
South winds 5 to 10 knots. Seas 2 feet. A slight chance of showers and thunderstorms.

Winds and seas higher in and near thunderstorms.


AMZ575-210215
Sebastian Inlet to Jupiter Inlet 20-60 nm
908 AM EDT Thu Aug 20 2026

REST OF TODAY
South winds around 5 knots, becoming 5 to 10 knots late. Seas 1 to 2 feet. Wave Detail: South 1 foot at 3 seconds and north 1 foot at 5 seconds.

TONIGHT
South winds 5 to 10 knots. Seas 1 to 2 feet. Wave Detail: North 1 foot at 3 seconds and south 1 foot at 3 seconds. A slight chance of showers and thunderstorms after midnight.

FRIDAY
South winds 5 to 10 knots. Seas 1 to 2 feet. Wave Detail: South 1 foot at 3 seconds and north 1 foot at 4 seconds. A slight chance of showers and thunderstorms.

FRIDAY NIGHT
South winds 10 to 15 knots. Seas 1 to 2 feet. Wave Detail: South 2 feet at 3 seconds and north 1 foot at 3 seconds. A chance of showers. A chance of thunderstorms in the evening, then a slight chance of thunderstorms after midnight.

SATURDAY
Southwest winds 5 to 10 knots, becoming south in the afternoon. Seas 1 to 2 feet. Wave Detail: South 2 feet at 3 seconds and northwest 1 foot at 2 seconds.

SATURDAY NIGHT
South winds 10 to 15 knots. Seas 1 to 2 feet. Wave Detail: South 2 feet at 3 seconds and east 1 foot at 9 seconds. A slight chance of showers and thunderstorms.

SUNDAY
Southwest winds 5 to 10 knots, becoming south in the afternoon. Seas 1 to 2 feet.

SUNDAY NIGHT
South winds 10 to 15 knots, diminishing to 5 to 10 knots after midnight. Seas 1 to 2 feet. A slight chance of showers and thunderstorms.

MONDAY
South winds 5 to 10 knots, becoming southeast in the afternoon. Seas 1 to 2 feet. A slight chance of showers and thunderstorms.

MONDAY NIGHT
Southeast winds 5 to 10 knots. Seas 1 to 2 feet. A slight chance of showers and thunderstorms.

Winds and seas higher in and near thunderstorms.