FZUS52 KJAX 080822 CWFJAX Coastal Waters Forecast for Northeast Florida/Southeast Georgia National Weather Service Jacksonville FL 422 AM EDT Wed Jul 8 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. AMZ400-082330- Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm- 422 AM EDT Wed Jul 8 2026 .SYNOPSIS... High pressure ridge will remain anchored across central and south Florida this week as low pressure troughing develops to the north. This pattern will maintain a southwest flow through early afternoon followed by late afternoon and evening wind surges from the south to Small Craft Exercise Caution wind speeds. The offshore flow will allow for a slight chance of afternoon and evening thunderstorm over the local coastal waters each day through the week. Mariners should expect locally strong wind gusts and frequent lightning with any developing thunderstorms. .GULF STREAM... The approximate location of the west wall of the Gulf Stream as of Jul 07, 2026 at 0000 UTC... 42 nautical miles east of Flagler Beach. 44 nautical miles east of Saint Augustine Beach. 56 nautical miles east southeast of Jacksonville Beach. 71 nautical miles east southeast of St Simons Island. This data derived from NCEP Global RTOFS model. $$ AMZ450-452-454-082330- 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- 422 AM EDT Wed Jul 8 2026 ...SMALL CRAFT EXERCISE CAUTION IN EFFECT FROM 4 PM EDT THIS AFTERNOON THROUGH THIS EVENING... .TODAY...Southwest winds around 10 knots, becoming south 15 to 20 knots this afternoon. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: Southeast 3 feet at 5 seconds and east 2 feet at 9 seconds. Intracoastal waters choppy. A slight chance of showers and thunderstorms this afternoon. .TONIGHT...South winds 15 to 20 knots, becoming west 10 to 15 knots after midnight. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: Southeast 4 feet at 5 seconds. Intracoastal waters choppy. .THURSDAY...Southwest winds 5 to 10 knots, becoming south 15 to 20 knots in the afternoon. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: Southeast 3 feet at 6 seconds and east 2 feet at 9 seconds. Intracoastal waters choppy. .THURSDAY NIGHT...South winds 15 to 20 knots, becoming southwest 10 to 15 knots after midnight. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: Southeast 4 feet at 5 seconds. Intracoastal waters choppy. .FRIDAY...Southwest winds 5 to 10 knots, becoming southeast 15 to 20 knots in the afternoon. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: Southeast 3 feet at 6 seconds. Intracoastal waters choppy. .FRIDAY NIGHT...South winds 15 to 20 knots, becoming southwest 10 to 15 knots after midnight. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: South 4 feet at 5 seconds. Intracoastal waters choppy. .SATURDAY...Southwest winds 10 to 15 knots. Seas 2 to 3 feet. Intracoastal waters a moderate chop. A slight chance of showers and thunderstorms in the evening. .SUNDAY...Southwest winds 10 to 15 knots, becoming west. Seas 2 to 3 feet. Intracoastal waters a moderate chop. A chance of showers and thunderstorms through the night. A slight chance of showers after midnight. Winds and waves higher in and near thunderstorms. $$ AMZ470-472-474-082330- 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 20to 60 NM- 422 AM EDT Wed Jul 8 2026 ...SMALL CRAFT EXERCISE CAUTION IN EFFECT FROM 4 PM EDT THIS AFTERNOON THROUGH LATE TONIGHT... .TODAY...West winds around 10 knots, becoming south 15 to 20 knots this afternoon. Seas 2 to 3 feet. Wave Detail: South 3 feet at 5 seconds and southeast 3 feet at 9 seconds. .TONIGHT...South winds 15 to 20 knots, becoming southwest after midnight. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: South 4 feet at 5 seconds and east 2 feet at 9 seconds. .THURSDAY...Southwest winds around 10 knots, becoming south 15 to 20 knots in the afternoon. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: South 3 feet at 5 seconds and southeast 3 feet at 9 seconds. .THURSDAY NIGHT...Southwest winds 15 to 20 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: South 4 feet at 5 seconds and east 2 feet at 9 seconds. .FRIDAY AND FRIDAY NIGHT...Southwest winds 15 to 20 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: South 4 feet at 5 seconds and southeast 3 feet at 8 seconds. .SATURDAY...Southwest winds 10 to 15 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: South 3 feet at 5 seconds and southeast 3 feet at 8 seconds. A slight chance of showers and thunderstorms in the evening. .SUNDAY...Southwest winds 5 to 10 knots, increasing to 10 to 15 knots. Seas 2 to 3 feet. A slight chance of showers through the day. A slight chance of thunderstorms in the afternoon, then a chance of thunderstorms in the evening. A chance of showers through the night. A slight chance of thunderstorms after midnight. Winds and seas higher in and near thunderstorms. $$