Coastal Waters Forecast
Issued by NWS Melbourne, FL
Issued by NWS Melbourne, FL
325 FZUS52 KMLB 210642 CWFMLB Coastal Waters Forecast for East Central Florida National Weather Service Melbourne FL 242 AM EDT Thu Aug 21 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. ANZ500-211915- Synopsis for Flagler Beach to Jupiter Inlet out to 60 nm 242 AM EDT Thu Aug 21 2025 .SYNOPSIS...Hurricane Erin, east of the Carolinas, will continue north-northeast and farther out to sea through late week. Hazardous boating conditions continue as large swells continue across the waters and only slowly subside through tonight. In particular, dangerous boating conditions will exist near inlets especially during the outgoing tide cycles today and tonight. .GULF STREAM HAZARDS...Seas 7 to 9 feet this morning, diminishing to 6 to 8 feet this afternoon. The approximate location of the west wall of the Gulf Stream based on the Real Time Ocean Forecast System as of Thursday, August 21st, 2025. 43 nautical miles east of Ponce Inlet. 29 nautical miles east of Port Canaveral. 26 nautical miles east of Sebastian Inlet. 18 nautical miles east of Fort Pierce Inlet. 11 nautical miles east of Saint Lucie Inlet. $$ AMZ550-211915- Flagler Beach to Volusia-Brevard County Line 0-20 nm- 242 AM EDT Thu Aug 21 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 PM EDT THIS AFTERNOON... .TODAY...West winds 5 to 10 knots, becoming south this afternoon. Seas 5 to 7 feet, occasionally to 9 feet. Wave Detail: Northeast 7 feet at 12 seconds. A light chop on the intracoastal waters. Showers and thunderstorms likely this afternoon. .TONIGHT...Southwest winds around 5 knots. Seas 4 to 5 feet, occasionally to 6 feet. Wave Detail: Northeast 5 feet at 12 seconds. 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...Southwest winds around 5 knots, becoming south in the afternoon. Seas 4 to 5 feet, occasionally to 6 feet. Wave Detail: Northeast 5 feet at 12 seconds. 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...Southwest winds around 5 knots. Seas 4 to 5 feet, occasionally to 6 feet. Wave Detail: Northeast 5 feet at 13 seconds. Smooth on the intracoastal waters. Showers and thunderstorms likely in the evening, then a chance of showers and thunderstorms after midnight. .SATURDAY...Southwest winds 5 to 10 knots. Seas 4 to 5 feet, occasionally to 6 feet. Wave Detail: Northeast 5 feet at 13 seconds and southeast 1 foot at 8 seconds. A light chop on the intracoastal waters. A chance of showers and thunderstorms in the morning, then showers and thunderstorms likely in the afternoon. .SATURDAY NIGHT...Southwest winds 5 to 10 knots. Seas 3 to 4 feet. Wave Detail: Northeast 4 feet at 13 seconds and southeast 1 foot at 8 seconds. Mostly smooth on the intracoastal waters. Showers and thunderstorms likely in the evening, then a chance of showers and thunderstorms after midnight. .SUNDAY...Southwest winds 5 to 10 knots. Seas 3 to 4 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. .SUNDAY NIGHT...West winds 5 to 10 knots. Seas 3 to 4 feet. Mostly smooth on the intracoastal waters. A chance of showers and thunderstorms. .MONDAY...West winds 5 to 10 knots. Seas 3 to 4 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. .MONDAY NIGHT...Southwest winds 5 to 10 knots, becoming west after midnight. Seas 3 to 4 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. Winds and waves higher in and near thunderstorms. $$ AMZ552-211915- Volusia-Brevard County Line to Sebastian Inlet 0-20 nm- 242 AM EDT Thu Aug 21 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING... .TODAY...West winds 5 to 10 knots, becoming south late. Seas 5 to 7 feet, occasionally to 9 feet. Wave Detail: Northeast 7 feet at 12 seconds and southeast 2 feet at 5 seconds. A light chop on the intracoastal waters. Showers and thunderstorms likely this afternoon. .TONIGHT...Southwest winds 5 to 10 knots. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: Northeast 6 feet at 12 seconds and southeast 2 feet at 5 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. .FRIDAY...Southwest winds 5 to 10 knots, becoming south in the afternoon. Seas 4 to 5 feet, occasionally to 6 feet. Wave Detail: Northeast 5 feet at 12 seconds and southeast 2 feet at 5 seconds. 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...Southwest winds around 5 knots. Seas 4 to 5 feet, occasionally to 6 feet. Wave Detail: Northeast 5 feet at 13 seconds and southeast 1 foot at 5 seconds. Smooth on the intracoastal waters. Showers and thunderstorms likely in the evening, then a chance of showers and thunderstorms after midnight. .SATURDAY...West winds around 5 knots, becoming southwest in the afternoon. Seas 4 to 5 feet, occasionally to 6 feet. Wave Detail: Northeast 5 feet at 13 seconds and southeast 1 foot at 5 seconds. A light chop on the intracoastal waters. A chance of showers and thunderstorms in the morning, then showers and thunderstorms likely in the afternoon. .SATURDAY NIGHT...Southwest winds 5 to 10 knots. Seas 4 to 5 feet, occasionally to 6 feet. Wave Detail: Northeast 4 feet at 13 seconds and southeast 1 foot at 5 seconds. Mostly smooth on the intracoastal waters. Showers and thunderstorms likely in the evening, then a chance of showers and thunderstorms after midnight. .SUNDAY...Southwest winds around 10 knots. 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. .SUNDAY NIGHT...Southwest winds around 10 knots. Seas 3 to 4 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. .MONDAY...Southwest winds 5 to 10 knots. Seas 3 to 4 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. .MONDAY NIGHT...West winds 5 to 10 knots. Seas 3 to 4 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. Winds and waves higher in and near thunderstorms. $$ AMZ555-211915- Sebastian Inlet to Jupiter Inlet 0-20 nm- 242 AM EDT Thu Aug 21 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING... .TODAY...West winds 5 to 10 knots, becoming south this afternoon. Seas 6 to 8 feet, occasionally to 10 feet. Wave Detail: Northeast 8 feet at 12 seconds. A light chop on the intracoastal waters. A slight chance of showers and thunderstorms this morning, then thunderstorms likely with a chance of showers this afternoon. .TONIGHT...Southwest winds 5 to 10 knots. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: Northeast 6 feet at 12 seconds and east 2 feet at 5 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. .FRIDAY...West winds 5 to 10 knots, becoming south in the afternoon. Seas 5 to 6 feet, occasionally to 8 feet. Wave Detail: Northeast 6 feet at 12 seconds and east 2 feet at 5 seconds. A light chop on the intracoastal waters. A slight chance of showers and thunderstorms in the morning, then showers and thunderstorms likely in the afternoon. .FRIDAY NIGHT...Southwest winds around 5 knots, becoming west after midnight. Seas 5 to 6 feet, occasionally to 8 feet. Wave Detail: Northeast 6 feet at 13 seconds and southeast 2 feet at 5 seconds. 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...West winds around 5 knots, becoming south in the afternoon. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: Northeast 6 feet at 14 seconds and southeast 2 feet at 5 seconds. A light chop on the intracoastal waters. A chance of showers and thunderstorms in the morning, then showers and thunderstorms likely in the afternoon. .SATURDAY NIGHT...Southwest winds 5 to 10 knots. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: Northeast 5 feet at 13 seconds and southeast 2 feet at 5 seconds. Mostly smooth on the intracoastal waters. A chance of showers and thunderstorms. .SUNDAY...Southwest winds 5 to 10 knots. Seas 4 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. .SUNDAY NIGHT...Southwest winds around 10 knots. Seas 4 to 5 feet, occasionally to 6 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. .MONDAY...Southwest winds 5 to 10 knots. Seas 3 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. .MONDAY NIGHT...Southwest winds 5 to 10 knots. Seas 3 to 4 feet. Mostly smooth on the intracoastal waters. A chance of showers and thunderstorms. Winds and waves higher in and near thunderstorms. $$ AMZ570-211915- Flagler Beach to Volusia-Brevard County Line 20-60 nm- 242 AM EDT Thu Aug 21 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING... .TODAY...West winds 10 to 15 knots, diminishing to 5 to 10 knots late this morning and early afternoon, becoming southwest late. Seas 7 to 9 feet, occasionally to 11 feet. Wave Detail: Northeast 8 feet at 12 seconds. A slight chance of showers and thunderstorms this morning, then a chance of showers and thunderstorms this afternoon. .TONIGHT...Southwest winds 5 to 10 knots, becoming west after midnight. Seas 5 to 7 feet, occasionally to 9 feet. Wave Detail: Northeast 7 feet at 12 seconds. 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. Wave Detail: Northeast 6 feet at 12 seconds. Showers and thunderstorms likely. .FRIDAY NIGHT...Southwest winds 5 to 10 knots. Seas 5 to 6 feet, occasionally to 8 feet. Wave Detail: Northeast 6 feet at 13 seconds and east 1 foot at 8 seconds. Showers and thunderstorms likely. .SATURDAY...Southwest winds 5 to 10 knots. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: Northeast 6 feet at 13 seconds and east 1 foot at 8 seconds. Showers and thunderstorms likely. .SATURDAY NIGHT...Southwest winds 5 to 10 knots. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: Northeast 5 feet at 13 seconds and southeast 1 foot at 8 seconds. Showers and thunderstorms likely. .SUNDAY...Southwest winds around 10 knots. Seas 4 to 6 feet, occasionally to 8 feet. Showers and thunderstorms likely. .SUNDAY NIGHT...West winds around 10 knots. Seas 4 to 5 feet, occasionally to 6 feet. Showers and thunderstorms likely. .MONDAY...West winds 5 to 10 knots. Seas 4 to 5 feet, occasionally to 6 feet. Showers and thunderstorms likely. .MONDAY NIGHT...Southwest winds 5 to 10 knots, becoming west after midnight. Seas 4 to 5 feet, occasionally to 6 feet. A chance of showers and thunderstorms. Winds and seas higher in and near thunderstorms. $$ AMZ572-211915- Volusia-Brevard County Line to Sebastian Inlet 20-60 nm- 242 AM EDT Thu Aug 21 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING... .TODAY...West winds 5 to 10 knots, becoming south late. Seas 8 to 9 feet, occasionally to 11 feet, subsiding to 6 to 8 feet, occasionally to 10 feet this afternoon. Wave Detail: Northeast 8 feet at 12 seconds and north 4 feet at 7 seconds, becoming northeast 7 feet at 11 seconds and north 3 feet at 8 seconds this afternoon. A slight chance of showers and thunderstorms this morning, then a chance of showers and thunderstorms this afternoon. .TONIGHT...Southwest winds 5 to 10 knots. Seas 6 to 7 feet, occasionally to 9 feet. Wave Detail: Northeast 7 feet at 11 seconds and north 3 feet at 9 seconds. 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. Wave Detail: Northeast 6 feet at 12 seconds and northwest 2 feet at 12 seconds. Showers and thunderstorms likely. .FRIDAY NIGHT...Southwest winds 5 to 10 knots. Seas 6 feet, occasionally to 8 feet. Wave Detail: Northeast 6 feet at 13 seconds and northwest 2 feet at 11 seconds. Showers and thunderstorms likely. .SATURDAY...West winds 5 to 10 knots, becoming southwest in the afternoon. Seas 5 to 6 feet, occasionally to 8 feet. Wave Detail: Northeast 6 feet at 13 seconds and northwest 2 feet at 12 seconds. Showers and thunderstorms likely. .SATURDAY NIGHT...Southwest winds around 10 knots. Seas 5 to 6 feet, occasionally to 8 feet. Wave Detail: Northeast 5 feet at 12 seconds and northwest 2 feet at 12 seconds. Showers and thunderstorms likely. .SUNDAY...Southwest winds around 10 knots. Seas 5 to 6 feet, occasionally to 8 feet. Showers and thunderstorms likely. .SUNDAY NIGHT...Southwest winds 10 to 15 knots. Seas 4 to 5 feet, occasionally to 6 feet. Showers and thunderstorms likely in the evening, then a chance of showers and thunderstorms after midnight. .MONDAY...West winds 10 to 15 knots, becoming southwest 5 to 10 knots in the afternoon. Seas 4 to 5 feet, occasionally to 6 feet. Showers and thunderstorms likely. .MONDAY NIGHT...West winds 5 to 10 knots. Seas 4 to 5 feet, occasionally to 6 feet. A chance of showers and thunderstorms. Winds and seas higher in and near thunderstorms. $$ AMZ575-211915- Sebastian Inlet to Jupiter Inlet 20-60 nm- 242 AM EDT Thu Aug 21 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING... .TODAY...West winds 5 to 10 knots, becoming southwest this afternoon. Seas 6 to 8 feet, occasionally to 10 feet. Wave Detail: Northeast 8 feet at 11 seconds and north 4 feet at 8 seconds. A slight chance of showers and thunderstorms this morning, then a chance of showers and thunderstorms this afternoon. .TONIGHT...Southwest winds around 10 knots. Seas 5 to 7 feet, occasionally to 9 feet. Wave Detail: Northeast 7 feet at 11 seconds and north 3 feet at 8 seconds. A chance of showers and thunderstorms. .FRIDAY...West winds 5 to 10 knots, becoming southwest in the afternoon. Seas 6 feet, occasionally to 8 feet. Wave Detail: Northeast 6 feet at 11 seconds and northwest 2 feet at 11 seconds. A chance of showers and thunderstorms in the morning, then showers and thunderstorms likely in the afternoon. .FRIDAY NIGHT...Southwest winds 5 to 10 knots. Seas 6 feet, occasionally to 8 feet. Wave Detail: Northeast 6 feet at 13 seconds and south 2 feet at 4 seconds. Showers and thunderstorms likely in the evening, then a chance of showers and thunderstorms after midnight. .SATURDAY...West winds 5 to 10 knots, becoming southwest in the afternoon. Seas 5 to 6 feet, occasionally to 8 feet. Wave Detail: Northeast 6 feet at 13 seconds and northwest 2 feet at 12 seconds. Showers and thunderstorms likely. .SATURDAY NIGHT...Southwest winds 5 to 10 knots. Seas 5 to 6 feet, occasionally to 8 feet. Wave Detail: Northeast 5 feet at 12 seconds and south 2 feet at 5 seconds. Showers and thunderstorms likely. .SUNDAY...Southwest winds around 10 knots. Seas 5 to 6 feet, occasionally to 8 feet. A chance of showers and thunderstorms in the morning, then showers and thunderstorms likely in the afternoon. .SUNDAY NIGHT...Southwest winds 10 to 15 knots. Seas 5 feet, occasionally to 6 feet. Showers and thunderstorms likely in the evening, then a chance of showers and thunderstorms after midnight. .MONDAY...Southwest winds 10 to 15 knots. Seas 4 to 5 feet, occasionally to 6 feet. A chance of showers and thunderstorms in the morning, then showers and thunderstorms likely in the afternoon. .MONDAY NIGHT...Southwest winds 5 to 10 knots. Seas 4 feet. A chance of showers and thunderstorms. Winds and seas higher in and near thunderstorms. $$