Coastal Waters Forecast
Issued by NWS Jacksonville, FL
Issued by NWS Jacksonville, FL
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705 FZUS52 KJAX 091825 CWFJAX Coastal Waters Forecast for Northeast Florida/Southeast Georgia National Weather Service Jacksonville FL 224 PM EDT Sat May 9 2026 Atlantic Coastal Waters from Altamaha Sound GA to Flagler Beach FL out to 60 nm. Seas are provided as a range of the average height of the highest 1/3 of the waves, along with the occasional height of the average highest 1/10 of the waves. AMZ400-100900- Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm- 224 PM EDT Sat May 9 2026 .SYNOPSIS... A frontal boundary near the FL/GA border will be stationary this weekend. Periods of showers and thunderstorms are expected through this weekend, with strong to isolated severe thunderstorms possible. A stronger cold front will then push through the local waters on Monday. Northwesterly winds will strengthen to Caution levels late Monday evening in the wake of the frontal passage, with winds quickly shifting to northerly Monday Night and increasing to Small Craft Advisory levels on Tuesday as high pressure builds north of the region. .GULF STREAM... The approximate location of the west wall of the Gulf Stream as of May 09, 2026 at 0000 UTC... 54 nautical miles east of Flagler Beach. 58 nautical miles east of Saint Augustine Beach. 70 nautical miles east southeast of Jacksonville Beach. 76 nautical miles east southeast of St Simons Island. This data derived from NCEP Global RTOFS model. $$ AMZ450-452-454-100900- Coastal waters from Altamaha Sound to Fernandina Beach FL out 20 NM- Coastal waters from Fernandina Beach to St. Augustine FL out 20 NM- Coastal waters from St. Augustine to Flagler Beach FL out 20 NM- 224 PM EDT Sat May 9 2026 .REST OF TODAY...Southwest winds 5 to 10 knots. Seas around 2 feet. Wave Detail: Northeast 2 feet at 6 seconds. Intracoastal waters light chop. A chance of showers and thunderstorms. .TONIGHT...Southwest winds 5 to 10 knots. Seas around 2 feet. Wave Detail: East 2 feet at 7 seconds. Intracoastal waters light chop. A slight chance of thunderstorms. A chance of showers, mainly in the evening. .SUNDAY...North winds around 5 knots, becoming east in the afternoon. Seas around 2 feet. Wave Detail: East 2 feet at 8 seconds. Intracoastal waters light chop. A chance of showers. A slight chance of thunderstorms in the morning, then a chance of thunderstorms in the afternoon. .SUNDAY NIGHT...South winds around 5 knots. Seas around 2 feet. Wave Detail: East 2 feet at 9 seconds. Intracoastal waters smooth. A slight chance of showers in the evening. .MONDAY...Southwest winds 5 to 10 knots. Seas around 2 feet. Intracoastal waters light chop. A slight chance of showers and thunderstorms in the morning, then showers with a chance of thunderstorms in the afternoon. .MONDAY NIGHT...West winds 5 to 10 knots, becoming northwest 15 to 20 knots after midnight. Seas 2 to 3 feet. Wave Detail: Northwest 2 feet at 3 seconds. Intracoastal waters choppy. Showers likely with a slight chance of thunderstorms in the evening, then a chance of showers after midnight. .TUESDAY...Northeast winds 20 to 25 knots, diminishing to 15 to 20 knots. Seas 4 to 6 feet, occasionally to 8 feet. Intracoastal waters rough. A slight chance of thunderstorms in the morning. A chance of showers through the day. A chance of thunderstorms in the afternoon. A slight chance of thunderstorms in the evening. A slight chance of showers through the night. .WEDNESDAY...East winds 5 to 10 knots, becoming south. Seas 4 to 6 feet, occasionally to 8 feet, subsiding to 3 to 4 feet, occasionally to 5 feet after midnight. Intracoastal waters light chop. A slight chance of showers in the morning, then a slight chance of showers and thunderstorms in the afternoon. Winds and waves higher in and near thunderstorms. $$ AMZ470-472-474-100900- Waters from Altamaha Sound GA to Fernandina Beach FL from 20 to 60 NM- Waters from Fernandina Beach to St. Augustine FL from 20 to 60 NM- Waters from St. Augustine to Flagler Beach FL from 20 to 60 NM- 224 PM EDT Sat May 9 2026 .REST OF TODAY...Southwest winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at 4 seconds and northeast 2 feet at 7 seconds. A chance of showers and thunderstorms. .TONIGHT...Southwest winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: East 2 feet at 8 seconds. A chance of showers with a slight chance of thunderstorms. .SUNDAY...Northwest winds around 5 knots, becoming east in the afternoon. Seas around 2 feet. Wave Detail: East 2 feet at 8 seconds. A slight chance of showers and thunderstorms. .SUNDAY NIGHT...Southeast winds 5 to 10 knots, becoming south after midnight. Seas around 2 feet. Wave Detail: East 2 feet at 9 seconds. A slight chance of showers and thunderstorms. .MONDAY...Southwest winds 5 to 10 knots. Seas around 2 feet. Wave Detail: Southeast 2 feet at 12 seconds. A slight chance of showers and thunderstorms in the morning, then showers likely with a chance of thunderstorms in the afternoon. .MONDAY NIGHT...West winds 5 to 10 knots, becoming northwest 15 to 20 knots after midnight. Seas 2 to 3 feet. Wave Detail: Northwest 3 feet at 3 seconds and southeast 2 feet at 12 seconds. A slight chance of thunderstorms. Showers, mainly in the evening. .TUESDAY...Northeast winds 20 to 25 knots, becoming east 15 to 20 knots. Seas 4 to 6 feet, occasionally to 8 feet, building to 5 to 8 feet, occasionally to 10 feet. A chance of showers. A slight chance of thunderstorms through the night. A slight chance of showers after midnight. .WEDNESDAY...East winds 5 to 10 knots, becoming south. Seas 5 to 7 feet, occasionally to 9 feet, subsiding to 3 to 5 feet, occasionally to 6 feet. A slight chance of showers in the morning. A slight chance of showers and thunderstorms through the night. Winds and seas higher in and near thunderstorms. $$