FZUS52 KJAX 200804 CWFJAX Coastal Waters Forecast for Northeast Florida/Southeast Georgia National Weather Service Jacksonville FL 304 AM EST Mon Jan 20 2025 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. AMZ400-202215- Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm- 304 AM EST Mon Jan 20 2025 .SYNOPSIS... Breezy northwest winds this morning with Small Craft Advisory headlines in effect through 11AM. High pressure continues to build over the Tennessee and Ohio Valleys today, with this feature wedging down the southeastern seaboard by this evening as a weak wave of low pressure develops over the western Gulf of Mexico. Northeast winds will gradually strengthen tonight and will shift to northerly Tuesday night as low pressure organizes off the northeast Florida coast, with Small Craft Advisory conditions likely throughout our local waters on Tuesday night and Wednesday, along with building seas and potential Gale conditions. .GULF STREAM... The approximate location of the west wall of the Gulf Stream as of Jan 18, 2025 at 1200 UTC... 64 nautical miles east of Flagler Beach. 73 nautical miles east of Saint Augustine Beach. 82 nautical miles east of Jacksonville Beach. 99 nautical miles east southeast of St Simons Island. This data courtesy of the Naval Oceanographic Office. $$ AMZ450-452-454-202215- 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- 304 AM EST Mon Jan 20 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 AM EST THIS MORNING... .TODAY...North winds 15 to 20 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: North 4 feet at 5 seconds. Intracoastal waters choppy. .TONIGHT...North winds 10 to 15 knots, increasing to 15 to 20 knots after midnight. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: North 4 feet at 5 seconds. Intracoastal waters choppy. A chance of showers after midnight. .TUESDAY...North winds 15 to 20 knots, increasing to 20 to 25 knots with gusts up to 35 knots in the afternoon. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: North 6 feet at 6 seconds. Intracoastal waters rough. A chance of showers in the morning, then showers likely in the afternoon. .TUESDAY NIGHT...North winds 25 to 30 knots with gusts up to 45 knots. Seas 6 to 9 feet, occasionally to 11 feet. Wave Detail: North 8 feet at 6 seconds. Intracoastal waters very rough. Showers. Freezing rain after midnight. .WEDNESDAY...North winds 20 to 25 knots with gusts up to 35 knots. Seas 6 to 9 feet, occasionally to 11 feet. Wave Detail: Northeast 8 feet at 8 seconds. Intracoastal waters rough. Showers likely, mainly in the morning. .WEDNESDAY NIGHT...North winds 15 to 20 knots. Seas 6 to 9 feet, occasionally to 11 feet, subsiding to 5 to 7 feet, occasionally to 9 feet after midnight. Wave Detail: Northeast 8 feet at 9 seconds and east 3 feet at 9 seconds, becoming northeast 7 feet at 9 seconds and east 4 feet at 9 seconds. Intracoastal waters choppy. A chance of showers. .THURSDAY...North winds 15 to 20 knots, becoming northwest 10 to 15 knots. Seas 5 to 7 feet, occasionally to 9 feet, subsiding to 3 to 5 feet, occasionally to 6 feet after midnight. Intracoastal waters choppy. A chance of showers through the day, then a slight chance of showers through the night. .FRIDAY...Northwest winds 10 to 15 knots. Seas 3 to 5 feet, occasionally to 6 feet. Intracoastal waters a moderate chop. $$ AMZ470-472-474-202215- 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- 304 AM EST Mon Jan 20 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 AM EST THIS MORNING... .TODAY...North winds 15 to 20 knots. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: North 5 feet at 6 seconds. .TONIGHT...North winds 15 to 20 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: North 4 feet at 6 seconds. A chance of showers after midnight. .TUESDAY...North winds 15 to 20 knots, increasing to 25 to 30 knots with gusts up to 40 knots in the afternoon. Seas 4 to 5 feet, occasionally to 6 feet, building to 5 to 7 feet, occasionally to 9 feet in the afternoon. Wave Detail: North 5 feet at 6 seconds, becoming north 7 feet at 6 seconds. A chance of showers in the morning, then showers in the afternoon. .TUESDAY NIGHT...North winds 25 to 35 knots with gusts up to 45 knots. Seas 7 to 10 feet, occasionally to 13 feet, building to 9 to 12 feet, occasionally to 15 feet after midnight. Wave Detail: North 10 feet at 7 seconds, becoming north 11 feet at 8 seconds. Showers. .WEDNESDAY...North winds 20 to 25 knots with gusts up to 35 knots. Seas 9 to 11 feet, occasionally to 14 feet. Wave Detail: Northeast 10 feet at 8 seconds. Showers likely, mainly in the morning. .WEDNESDAY NIGHT...Northeast winds 20 to 25 knots, becoming north 15 to 20 knots after midnight. Seas 8 to 10 feet, occasionally to 13 feet, subsiding to 7 to 8 feet, occasionally to 10 feet after midnight. Wave Detail: Northeast 10 feet at 9 seconds, becoming northeast 8 feet at 9 seconds. A chance of showers. .THURSDAY...Northwest winds 15 to 20 knots. Seas 5 to 7 feet, occasionally to 9 feet. A chance of showers . .FRIDAY...Northwest winds 15 to 20 knots. Seas 4 to 6 feet, occasionally to 8 feet. $$