FZUS52 KJAX 191826 CWFJAX Coastal Waters Forecast for Northeast Florida/Southeast Georgia National Weather Service Jacksonville FL 226 PM EDT Tue May 19 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. AMZ400-200900- Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm- 226 PM EDT Tue May 19 2026 .SYNOPSIS... Atlantic high pressure centered near Bermuda will continue to extend its axis westward across the southeastern states through the end of the week. This feature will maintain a prevailing east to southeasterly wind flow across our local waters during the next several days. A frontal boundary will briefly stall over the southeastern states late this week. Caution level wind speeds will be possible for the near shore waters during the late afternoon and evening hours from Friday through early next week as Atlantic high pressure becomes reinforced near Bermuda. Only isolated showers and perhaps a few thunderstorms are expected through Saturday, with a slight increase in coverage possible towards Memorial Day. .GULF STREAM... The approximate location of the west wall of the Gulf Stream as of May 19, 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. 76 nautical miles east southeast of St Simons Island. This data derived from NCEP Global RTOFS model. $$ AMZ450-452-454-200900- Coastal waters from Altamaha Sound to Fernandina Beach FL out 20 NM- Coastal waters from Fernandina Beach to St. Augustine FL out 20 NM- Coastal waters from St. Augustine to Flagler Beach FL out 20 NM- 226 PM EDT Tue May 19 2026 .REST OF TODAY...East winds 10 to 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at 7 seconds. Intracoastal waters a moderate chop. .TONIGHT...Southeast winds 10 to 15 knots, diminishing to 5 to 10 knots after midnight. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at 8 seconds. Intracoastal waters a moderate chop. .WEDNESDAY...East winds 5 to 10 knots. Seas around 3 feet. Wave Detail: East 3 feet at 8 seconds. Intracoastal waters light chop. .WEDNESDAY NIGHT...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: East 3 feet at 8 seconds. Intracoastal waters light chop. .THURSDAY...Southeast winds 5 to 10 knots, increasing to 10 to 15 knots in the afternoon. Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at 9 seconds. Intracoastal waters a moderate chop. .THURSDAY NIGHT...Southeast winds 10 to 15 knots. Seas around 3 feet. Wave Detail: Southeast 3 feet at 9 seconds. Intracoastal waters a moderate chop. .FRIDAY THROUGH SATURDAY...Southeast winds 10 to 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. Intracoastal waters a moderate chop. $$ AMZ470-472-474-200900- 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- 226 PM EDT Tue May 19 2026 .REST OF TODAY...East winds 10 to 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at 8 seconds. .TONIGHT...Southeast winds 10 to 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at 8 seconds. .WEDNESDAY...East winds 5 to 10 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 3 feet at 8 seconds. .WEDNESDAY NIGHT...Southeast winds 5 to 10 knots. Seas around 3 feet. Wave Detail: Southeast 3 feet at 9 seconds. .THURSDAY AND THURSDAY NIGHT...South winds 10 to 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: Southeast 4 feet at 9 seconds. .FRIDAY THROUGH SATURDAY...Southeast winds 10 to 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: Southeast 4 feet at 9 seconds. A slight chance of showers and thunderstorms. Winds and seas higher in and near thunderstorms. $$