NWS Marine Forecast


   AMZ400-042100-  Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-  240 AM EDT Sun Oct 4 2026      .SYNOPSIS...    Southeasterly wind continues today with showers and thunderstorms  pushing eastward toward the Atlantic coast and into the waters late  this afternoon. Outside of thunderstorm activity, winds and seas are  expected to remain below Caution levels through at least Monday  afternoon.    Deteriorating conditions are expected Tuesday as cold front enters  and stalls over the area waters. Following the front, a strong high  pressure building will wedge down the southeastern seaboard,  initiating a prolonged surge of strong northeasterly winds and high  seas across our local waters. Small Craft Advisory conditions are  likely by Tuesday, with the potential for wind gusts near Gale force  through Thursday. Northeasterly winds are expected to gradually  decrease through Friday and shift onshore next weekend.      .GULF STREAM...    The approximate location of the west wall of the Gulf Stream as of  Oct 03, 2026 at 0000 UTC...    54 nautical miles east of Flagler Beach.  62 nautical miles east of Saint Augustine Beach.  74 nautical miles east southeast of Jacksonville Beach.  71 nautical miles east southeast of St Simons Island.    This data derived from NCEP Global RTOFS model.      $$
   AMZ470-472-474-042100-  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-  240 AM EDT Sun Oct 4 2026    REST OF TONIGHT  Southeast winds 10 to 15 knots. Seas around  3 feet. Wave Detail: Southeast 3 feet at 7 seconds and east  2 feet at 11 seconds. A chance of showers and thunderstorms.  SUNDAY  Southeast winds 5 to 10 knots. Seas around 3 feet. Wave  Detail: Southeast 3 feet at 7 seconds and east 2 feet at  11 seconds. A chance of showers and thunderstorms.  SUNDAY NIGHT  Southeast winds 5 to 10 knots, becoming southwest  after midnight. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet  at 6 seconds. Showers likely. A chance of thunderstorms, mainly  in the evening.  MONDAY  Northwest winds 5 to 10 knots, becoming north in the  afternoon. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at  6 seconds. A chance of showers and thunderstorms in the morning,  then showers likely with a slight chance of thunderstorms in the  afternoon.  MONDAY NIGHT  Northeast winds 5 to 10 knots, becoming east  10 to 15 knots after midnight. Seas 2 to 4 feet, occasionally to  5 feet. Wave Detail: Northeast 2 feet at 5 seconds and east  2 feet at 9 seconds. Showers with a chance of thunderstorms.  TUESDAY  Northeast winds 15 to 20 knots, increasing to 25 to  30 knots in the afternoon. Seas 3 to 5 feet, occasionally to  6 feet, building to 5 to 8 feet, occasionally to 10 feet in the  afternoon. Wave Detail: East 5 feet at 8 seconds and east 2 feet  at 5 seconds, becoming northeast 8 feet at 8 seconds. Showers  with a chance of thunderstorms.  TUESDAY NIGHT  East winds 25 to 30 knots, becoming northeast  20 to 25 knots after midnight. Seas 7 to 10 feet, occasionally to  13 feet. Showers with a chance of thunderstorms.  WEDNESDAY  Northeast winds 25 to 30 knots, diminishing to 20 to  25 knots. Seas 6 to 9 feet, occasionally to 11 feet. Showers with  a chance of thunderstorms, then a chance of showers with a slight  chance of thunderstorms after midnight.  THURSDAY  Northeast winds 15 to 20 knots. Seas 5 to 7 feet,  occasionally to 9 feet. A slight chance of thunderstorms in the  morning. A chance of showers through the day. A chance of  thunderstorms in the afternoon, then showers likely with a slight  chance of thunderstorms through the night.    Winds and seas higher in and near thunderstorms.    $$