Coastal Waters Forecast
Issued by NWS Jacksonville, FL
Issued by NWS Jacksonville, FL
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732 FZUS52 KJAX 101347 CWFJAX Coastal Waters Forecast for Northeast Florida/Southeast Georgia National Weather Service Jacksonville FL 947 AM EDT Mon Aug 10 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. AMZ400-110500- Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm- 947 AM EDT Mon Aug 10 2026 .SYNOPSIS... Atlantic high pressure will gradually build westward across our local waters today and persist through the week. Southwesterly flow will prevail over the local waters with an afternoon sea breeze developing over the near shore waters each afternoon, followed by a southerly evening wind surge. Winds and seas are forecast to remain below Caution levels this week. Only isolated afternoon and evening thunderstorms are forecast today through Friday, mainly impacting the near shore waters. .GULF STREAM... The approximate location of the west wall of the Gulf Stream as of Aug 09, 2026 at 0000 UTC... 46 nautical miles east of Flagler Beach. 53 nautical miles east of Saint Augustine Beach. 60 nautical miles east southeast of Jacksonville Beach. 68 nautical miles east southeast of St Simons Island. This data derived from NCEP Global RTOFS model. $$ AMZ450-452-454-110500- Coastal waters from Altamaha Sound to Fernandina Beach FL out 20 NM- Coastal waters from Fernandina Beach to St. Augustine FL out 20 NM- Coastal waters from St. Augustine to Flagler Beach FL out 20 NM- 947 AM EDT Mon Aug 10 2026 .REST OF TODAY...South winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: East 2 feet at 7 seconds. Intracoastal waters light chop. A slight chance of showers and thunderstorms this afternoon. .TONIGHT...South winds 10 to 15 knots, becoming southwest 5 to 10 knots after midnight. Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at 7 seconds. Intracoastal waters a moderate chop. .TUESDAY...Southwest winds 5 to 10 knots, becoming south in the afternoon. Seas around 2 feet. Wave Detail: Southeast 2 feet at 3 seconds and southeast 2 feet at 7 seconds. Intracoastal waters light chop. A slight chance of showers and thunderstorms in the afternoon. .TUESDAY NIGHT...South winds 10 to 15 knots, becoming west after midnight. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at 4 seconds and east 2 feet at 7 seconds. Intracoastal waters a moderate chop. A slight chance of showers and thunderstorms in the evening. .WEDNESDAY...West winds 5 to 10 knots, becoming south in the afternoon. Seas around 2 feet. Wave Detail: Southeast 2 feet at 7 seconds. Intracoastal waters light chop. A slight chance of showers and thunderstorms in the afternoon. .WEDNESDAY NIGHT...Southwest winds 10 to 15 knots. Seas around 2 feet. Wave Detail: South 2 feet at 4 seconds and southeast 2 feet at 8 seconds. Intracoastal waters a moderate chop. .THURSDAY THROUGH FRIDAY...Southwest winds 10 to 15 knots. Seas 2 to 3 feet. Intracoastal waters a moderate chop. A slight chance of showers and thunderstorms. Winds and waves higher in and near thunderstorms. $$ AMZ470-472-474-110500- 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- 947 AM EDT Mon Aug 10 2026 .REST OF TODAY...South winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at 7 seconds. .TONIGHT...Southwest winds around 10 knots. Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at 7 seconds and southwest 2 feet at 4 seconds. .TUESDAY...Southwest winds 5 to 10 knots, becoming south in the afternoon. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at 7 seconds. .TUESDAY NIGHT...South winds 10 to 15 knots, becoming southwest after midnight. Seas 2 to 3 feet. Wave Detail: South 3 feet at 4 seconds and southeast 2 feet at 7 seconds. A slight chance of showers and thunderstorms. .WEDNESDAY...West winds 10 to 15 knots, becoming southwest 5 to 10 knots in the afternoon. Seas 2 to 3 feet. Wave Detail: Southwest 2 feet at 4 seconds and southeast 2 feet at 8 seconds. A slight chance of showers. A slight chance of thunderstorms in the afternoon. .WEDNESDAY NIGHT...Southwest winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: Southwest 2 feet at 4 seconds and southeast 2 feet at 8 seconds. A slight chance of showers and thunderstorms in the evening. .THURSDAY THROUGH FRIDAY...Southwest winds 10 to 15 knots. Seas 2 to 3 feet. A slight chance of showers and thunderstorms. Winds and seas higher in and near thunderstorms. $$