FZUS52 KJAX 152029 CWFJAX Coastal Waters Forecast for Northeast Florida/Southeast Georgia National Weather Service Jacksonville FL 429 PM EDT Thu Apr 15 2021 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. AMZ400-160915- Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm- 429 PM EDT Thu Apr 15 2021 .SYNOPSIS... A cold front will cross the waters tonight. The front will stall over central Florida through Friday night as low pressure develops over the lower Mississippi Valley and moves eastward. This low pressure center will cross southern Georgia on Saturday and will move offshore on Saturday night, with a weak frontal boundary then lingering over the northeast Florida waters through the middle portion of next week. Waves of showers and thunderstorms will impact the waters from this weekend into early next week. .GULF STREAM... The approximate location of the west wall of the Gulf Stream as of Apr 15, 2021 at 1200 UTC... 59 nautical miles east of Flagler Beach. 64 nautical miles east of Saint Augustine Beach. 74 nautical miles east of Jacksonville Beach. 86 nautical miles east southeast of St Simons Island. This data courtesy of the Naval Oceanographic Office. $$ AMZ450-452-454-160915- Coastal waters from Altamaha Sound to Fernandina Beach FL out 20 NM- Coastal waters from Fernandina Beach to St. Augustine FL out 20 NM- Coastal waters from St. Augustine to Flagler Beach FL out 20 NM- 429 PM EDT Thu Apr 15 2021 .TONIGHT...West winds 10 to 15 knots becoming northwest after midnight. Seas 3 to 4 feet with a dominant period 9 seconds. A light chop on the intracoastal waters. Chance of showers. .FRIDAY...Northeast winds 10 to 15 knots. Seas 3 to 4 feet with a dominant period 9 seconds. A moderate chop on the intracoastal waters. Slight chance of showers in the afternoon. .FRIDAY NIGHT...East winds 5 to 10 knots becoming southeast 5 knots after midnight. Seas 2 to 3 feet with a dominant period 11 seconds. Mostly smooth on the intracoastal waters. Slight chance of showers in the evening, then chance of showers after midnight. .SATURDAY...Southeast winds 5 to 10 knots becoming southwest in the afternoon. Seas 2 to 3 feet. A light chop on the intracoastal waters. Chance of showers in the morning, then showers likely and slight chance of thunderstorms in the afternoon. .SATURDAY NIGHT...West winds 5 to 10 knots. Seas 2 to 3 feet. Mostly smooth on the intracoastal waters. Slight chance of thunderstorms in the evening. Chance of showers. .SUNDAY...Northwest winds 5 to 10 knots. Seas 2 to 3 feet. A light chop on the intracoastal waters. Showers likely and slight chance of thunderstorms. .SUNDAY NIGHT...Northwest winds 5 to 10 knots. Seas 1 to 2 feet. Showers likely and slight chance of thunderstorms. .MONDAY...North winds 5 to 10 knots becoming northeast in the afternoon. Seas 1 to 2 feet. Showers likely and slight chance of thunderstorms. .MONDAY NIGHT...East winds 5 to 10 knots. Seas 1 to 2 feet. Showers likely and chance of thunderstorms. .TUESDAY...Northeast winds 5 to 10 knots. Seas 1 to 2 feet. Showers likely and slight chance of thunderstorms. $$ AMZ470-472-474-160915- 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- 429 PM EDT Thu Apr 15 2021 .TONIGHT...West winds 10 to 15 knots becoming northwest after midnight. Seas 3 to 5 feet with a dominant period 9 seconds. Chance of showers. .FRIDAY...North winds 10 to 15 knots. Seas 3 to 4 feet with a dominant period 9 seconds. Slight chance of showers in the afternoon. .FRIDAY NIGHT...East winds 5 to 10 knots becoming south 5 knots after midnight. Seas 3 to 4 feet with a dominant period 11 seconds. Slight chance of showers in the evening, then chance of showers after midnight. .SATURDAY...South winds 5 to 10 knots. Seas 3 to 4 feet. Chance of showers. Slight chance of thunderstorms in the afternoon. .SATURDAY NIGHT...Southwest winds 5 to 10 knots becoming west 10 to 15 knots after midnight. Seas 3 to 4 feet. Slight chance of showers and thunderstorms in the evening, then chance of showers after midnight. .SUNDAY...Northwest winds 10 to 15 knots diminishing to 5 to 10 knots in the afternoon. Seas 3 to 4 feet. Showers likely and slight chance of thunderstorms. .SUNDAY NIGHT...Northwest winds 5 to 10 knots. Seas 2 to 3 feet. Showers likely and chance of thunderstorms. .MONDAY...Northwest winds 10 knots becoming north 5 to 10 knots in the afternoon. Seas 2 feet. Showers likely and slight chance of thunderstorms. .MONDAY NIGHT...East winds 5 to 10 knots. Seas 1 to 2 feet. Showers likely and chance of thunderstorms. .TUESDAY...North winds 5 to 10 knots. Seas 2 to 3 feet. Showers and slight chance of thunderstorms. $$