Coastal Waters Forecast
Issued by NWS Jacksonville, FL
Issued by NWS Jacksonville, FL
881 FZUS52 KJAX 251345 CWFJAX Coastal Waters Forecast for Northeast Florida/Southeast Georgia National Weather Service Jacksonville FL 945 AM EDT Sat Jul 25 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. AMZ400-260445- Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm- 945 AM EDT Sat Jul 25 2026 .SYNOPSIS... A stationary frontal boundary extending from the Carolina coast westward across the deep south will begin to drift south towards the Georgia waters through Sunday, pushing the axis of Atlantic high pressure southward. This change in the weather pattern will create a prevailing offshore wind flow this weekend and early next week, with scattered to numerous afternoon and evening thunderstorms expected across our local waters each day. A few stronger storms will be possible during the late afternoon hours, with briefly strong wind gusts, frequent lightning strikes, and torrential downpours possible. Another front will approach the waters next week with offshore southwest winds increasing to near advisory levels by midweek. .GULF STREAM... The approximate location of the west wall of the Gulf Stream as of Jul 24, 2026 at 0000 UTC... 46 nautical miles east of Flagler Beach. 49 nautical miles east of Saint Augustine Beach. 60 nautical miles east southeast of Jacksonville Beach. 71 nautical miles east southeast of St Simons Island. This data derived from NCEP Global RTOFS model. $$ AMZ450-452-454-260445- 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- 945 AM EDT Sat Jul 25 2026 .REST OF TODAY...South winds 5 to 10 knots, becoming southeast this afternoon. Seas 2 to 3 feet. Wave Detail: East 2 feet at 8 seconds. Intracoastal waters light chop. A chance of showers and thunderstorms this afternoon. .TONIGHT...South winds 5 to 10 knots, becoming west after midnight. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at 8 seconds. Intracoastal waters light chop. A slight chance of showers and thunderstorms in the evening. .SUNDAY...West winds 5 to 10 knots, becoming south in the afternoon. Seas 2 to 3 feet. Wave Detail: East 2 feet at 8 seconds. Intracoastal waters light chop. A slight chance of showers in the morning, then showers likely with a chance of thunderstorms in the afternoon. .SUNDAY NIGHT...Southwest winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: South 2 feet at 4 seconds and east 2 feet at 8 seconds. Intracoastal waters a moderate chop. A chance of showers and thunderstorms in the evening, then a slight chance of showers after midnight. .MONDAY...Northwest winds 5 to 10 knots, becoming east in the afternoon. Seas 2 to 3 feet. Wave Detail: West 2 feet at 3 seconds and east 2 feet at 8 seconds. Intracoastal waters light chop. A slight chance of showers and thunderstorms in the afternoon. .MONDAY NIGHT...South winds 5 to 10 knots. Seas around 2 feet. Wave Detail: Southeast 2 feet at 3 seconds and east 2 feet at 8 seconds. Intracoastal waters light chop. .TUESDAY...South winds 10 to 15 knots, becoming southwest 15 to 20 knots. Seas 2 to 3 feet. Intracoastal waters choppy. A slight chance of showers and thunderstorms through the night. .WEDNESDAY...Southwest winds 10 to 15 knots, increasing to 15 to 20 knots. Seas 2 to 4 feet, occasionally to 5 feet. Intracoastal waters choppy. A chance of showers and thunderstorms through the night. A chance of showers with a slight chance of thunderstorms after midnight. Winds and waves higher in and near thunderstorms. $$ AMZ470-472-474-260445- 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- 945 AM EDT Sat Jul 25 2026 .REST OF TODAY...Southwest winds around 5 knots, becoming south this afternoon. Seas 2 to 3 feet. Wave Detail: East 3 feet at 8 seconds. .TONIGHT...South winds around 10 knots, becoming west after midnight. Seas around 3 feet. Wave Detail: Southeast 3 feet at 8 seconds and south 2 feet at 3 seconds. A slight chance of showers and thunderstorms in the evening. .SUNDAY...West winds 10 to 15 knots, becoming southwest 5 to 10 knots in the afternoon. Seas 2 to 3 feet. Wave Detail: East 3 feet at 8 seconds and west 2 feet at 3 seconds. A slight chance of showers and thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon. .SUNDAY NIGHT...Southwest winds 10 to 15 knots. Seas around 3 feet. Wave Detail: Southwest 3 feet at 4 seconds and east 2 feet at 8 seconds. Showers likely with a chance of thunderstorms in the evening, then a chance of showers with a slight chance of thunderstorms after midnight. .MONDAY...West winds around 10 knots, becoming south in the afternoon. Seas 2 to 3 feet. Wave Detail: Southwest 2 feet at 4 seconds and east 2 feet at 8 seconds. A slight chance of showers and thunderstorms in the morning. .MONDAY NIGHT...Southwest winds 5 to 10 knots. Seas around 2 feet. Wave Detail: South 2 feet at 4 seconds and east 2 feet at 8 seconds. .TUESDAY...South winds 10 to 15 knots, becoming southwest 15 to 20 knots. Seas 2 to 4 feet, occasionally to 5 feet. .WEDNESDAY...Southwest winds 15 to 20 knots. Seas 3 to 5 feet, occasionally to 6 feet. A chance of showers in the afternoon. A chance of thunderstorms. Showers likely in the evening, then a chance of showers after midnight. Winds and seas higher in and near thunderstorms. $$