Coastal Waters Forecast
Issued by NWS Jacksonville, FL
Issued by NWS Jacksonville, FL
808 FZUS52 KJAX 260009 CWFJAX Coastal Waters Forecast for Northeast Florida/Southeast Georgia National Weather Service Jacksonville FL 809 PM 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. AMZ400-261515- Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm- 809 PM 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 25, 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. 68 nautical miles east southeast of St Simons Island. This data derived from NCEP Global RTOFS model. $$ AMZ450-452-454-261515- 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- 809 PM EDT Sat Jul 25 2026 .REST OF TONIGHT...Southwest winds 5 to 10 knots, becoming west. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at 8 seconds. Intracoastal waters light chop. A slight chance of showers and thunderstorms this evening. .SUNDAY...West winds 5 to 10 knots, becoming south in the afternoon. Seas around 2 feet. Wave Detail: East 2 feet at 8 seconds. Intracoastal waters light chop. A chance of showers and thunderstorms in the afternoon. .SUNDAY NIGHT...Southwest winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: South 2 feet at 3 seconds and southeast 2 feet at 8 seconds. Intracoastal waters light 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 southeast in the afternoon. Seas 2 to 3 feet. Wave Detail: Southwest 2 feet at 4 seconds and east 2 feet at 8 seconds. Intracoastal waters light chop. A chance of showers and thunderstorms in the afternoon. .MONDAY NIGHT...South winds 5 to 10 knots, becoming southwest after midnight. Seas around 2 feet. Wave Detail: East 2 feet at 8 seconds. Intracoastal waters light chop. .TUESDAY AND TUESDAY NIGHT...Southwest winds 15 to 20 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: South 3 feet at 4 seconds and east 2 feet at 8 seconds. Intracoastal waters choppy. .WEDNESDAY...Southwest winds 15 to 20 knots, increasing to 20 to 25 knots. Seas 2 to 4 feet, occasionally to 5 feet. Intracoastal waters rough. A chance of showers and thunderstorms through the night. A chance of showers with a slight chance of thunderstorms after midnight. .THURSDAY...Southwest winds 15 to 20 knots, diminishing to 10 to 15 knots. Seas 2 to 4 feet, occasionally to 5 feet. Intracoastal waters choppy. A chance of showers with a slight chance of thunderstorms in the morning, then showers likely with a chance of thunderstorms in the afternoon. A chance of showers with a slight chance of thunderstorms in the evening, then a slight chance of showers after midnight. Winds and waves higher in and near thunderstorms. $$ AMZ470-472-474-261515- 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- 809 PM EDT Sat Jul 25 2026 .REST OF TONIGHT...Southwest winds around 10 knots, becoming west. Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at 8 seconds and south 2 feet at 3 seconds. .SUNDAY...West winds 5 to 10 knots, becoming south in the afternoon. Seas 2 to 3 feet. Wave Detail: Southeast 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 2 to 3 feet. Wave Detail: East 3 feet at 8 seconds and southwest 2 feet at 4 seconds. A chance of showers and thunderstorms, mainly in the evening. .MONDAY...West winds 5 to 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. .MONDAY NIGHT...Southwest winds 5 to 10 knots. Seas around 2 feet. Wave Detail: East 2 feet at 8 seconds. .TUESDAY AND TUESDAY NIGHT...Southwest winds 15 to 20 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: Southwest 4 feet at 5 seconds and east 2 feet at 8 seconds. .WEDNESDAY...Southwest winds 15 to 20 knots. Seas 4 to 6 feet, occasionally to 8 feet. A chance of showers and thunderstorms through the night. A chance of showers with a slight chance of thunderstorms after midnight. .THURSDAY...Southwest winds 15 to 20 knots, diminishing to 10 to 15 knots. Seas 3 to 5 feet, occasionally to 6 feet. A chance of showers with a slight chance of thunderstorms in the morning, then showers likely in the afternoon. A chance of thunderstorms through the night. A chance of showers in the evening, then a slight chance of showers and thunderstorms after midnight. Winds and seas higher in and near thunderstorms. $$