FZUS52 KJAX 221611 CWFJAX Coastal Waters Forecast for Northeast Florida/Southeast Georgia National Weather Service Jacksonville FL 1211 PM EDT Sat Aug 22 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. AMZ400-230715- Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm- 1211 PM EDT Sat Aug 22 2026 .SYNOPSIS... A frontal zone will extend across the Carolinas and into Georgia with a high pressure ridge to the southeast. Rounds of mainly afternoon and evening showers and thunderstorms can be expected each day. Brief southerly wind surges are expected during the late afternoon and evening hours, but winds are expected to remain below Small Craft Exercise Caution levels. The cold front will push into the local waters Sunday night into Monday and then lift back northward as a warm front by mid-week. .GULF STREAM... The approximate location of the west wall of the Gulf Stream as of Aug 22, 2026 at 0000 UTC... 50 nautical miles east of Flagler Beach. 58 nautical miles east of Saint Augustine Beach. 70 nautical miles east southeast of Jacksonville Beach. 80 nautical miles east southeast of St Simons Island. This data derived from NCEP Global RTOFS model. $$ AMZ450-452-454-230715- Coastal waters from Altamaha Sound to Fernandina Beach FL out 20 NM- Coastal waters from Fernandina Beach to St. Augustine FL out 20 NM- Coastal waters from St. Augustine to Flagler Beach FL out 20 NM- 1211 PM EDT Sat Aug 22 2026 .REST OF TODAY...South winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at 4 seconds. Intracoastal waters a moderate chop. A chance of showers with a slight chance of thunderstorms this afternoon. .TONIGHT...Southwest winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at 5 seconds. Intracoastal waters a moderate chop. A chance of showers with a slight chance of thunderstorms in the evening. .SUNDAY...Southwest winds 5 to 10 knots, becoming southeast 10 to 15 knots in the afternoon. Seas 2 to 3 feet. Wave Detail: South 2 feet at 5 seconds. Intracoastal waters a moderate chop. A slight chance of showers and thunderstorms in the afternoon. .SUNDAY NIGHT...Southwest winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at 4 seconds. Intracoastal waters a moderate chop. .MONDAY...Southwest winds 5 to 10 knots, becoming southeast 10 to 15 knots in the afternoon. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at 5 seconds. Intracoastal waters a moderate chop. A slight chance of showers and thunderstorms in the afternoon. .MONDAY NIGHT...South winds 10 to 15 knots, becoming southwest 5 to 10 knots after midnight. Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at 4 seconds. Intracoastal waters a moderate chop. A chance of showers with a slight chance of thunderstorms in the evening. .TUESDAY THROUGH WEDNESDAY...South winds 10 to 15 knots. Seas 2 to 3 feet. Intracoastal waters a moderate chop. A chance of showers with a slight chance of thunderstorms. Winds and waves higher in and near thunderstorms. $$ AMZ470-472-474-230715- 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- 1211 PM EDT Sat Aug 22 2026 .REST OF TODAY...Southwest winds around 10 knots, becoming south this afternoon. Seas 2 to 3 feet. Wave Detail: South 3 feet at 4 seconds. A slight chance of showers and thunderstorms this afternoon. .TONIGHT...Southwest winds 10 to 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: South 3 feet at 5 seconds. A slight chance of thunderstorms. A chance of showers, mainly in the evening. .SUNDAY...Southwest winds 10 to 15 knots, becoming south in the afternoon. Seas 2 to 3 feet. Wave Detail: South 3 feet at 5 seconds. A slight chance of showers in the afternoon. .SUNDAY NIGHT...Southwest winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: South 3 feet at 5 seconds. .MONDAY...Southwest winds 5 to 10 knots, becoming south 10 to 15 knots in the afternoon. Seas 2 to 3 feet. Wave Detail: South 2 feet at 5 seconds. .MONDAY NIGHT...South winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: South 3 feet at 4 seconds. A chance of showers with a slight chance of thunderstorms in the evening. .TUESDAY...South winds 10 to 15 knots. Seas 2 to 3 feet. A slight chance of showers and thunderstorms in the afternoon. A chance of thunderstorms in the evening. A chance of showers through the night. A slight chance of thunderstorms after midnight. .WEDNESDAY...South winds 10 to 15 knots. Seas 2 to 3 feet. A slight chance of thunderstorms. Winds and seas higher in and near thunderstorms. $$