NWS Marine Forecast


   AMZ400-220900-  Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-  225 PM EDT Sat Mar 21 2026      .SYNOPSIS...    High pressure ridging will prevail through Sunday night. A cold  front will move south southeast across the area Monday through  Monday night. The boundary is expected to stall over central FL  Tuesday and Wednesday. High pressure will build for Thursday and  Friday.      .GULF STREAM...    The approximate location of the west wall of the Gulf Stream as of  Mar 21, 2026 at 0000 UTC...    54 nautical miles east of Flagler Beach.  49 nautical miles east of Saint Augustine Beach.  60 nautical miles east southeast of Jacksonville Beach.  68 nautical miles east southeast of St Simons Island.    This data derived from NCEP Global RTOFS model.      $$
   AMZ450-452-454-220900-  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-  225 PM EDT Sat Mar 21 2026    REST OF TODAY  South winds 5 to 10 knots. Seas 3 to 4 feet,  occasionally to 5 feet. Wave Detail: East 4 feet at 10 seconds.  Intracoastal waters light chop.  TONIGHT  Southwest winds 10 to 15 knots. Seas 3 to 4 feet,  occasionally to 5 feet. Wave Detail: East 4 feet at 10 seconds  and southwest 2 feet at 3 seconds. Intracoastal waters a moderate  chop.  SUNDAY  West winds 5 to 10 knots, becoming south 10 to 15 knots  in the afternoon. Seas 3 to 4 feet, occasionally to 5 feet. Wave  Detail: East 4 feet at 10 seconds and west 2 feet at 3 seconds.  Intracoastal waters a moderate chop.  SUNDAY NIGHT  Southwest winds 10 to 15 knots. Seas 3 to 4 feet,  occasionally to 5 feet. Wave Detail: South 3 feet at 4 seconds  and east 3 feet at 9 seconds. Intracoastal waters a moderate  chop.  MONDAY  Southwest winds 10 to 15 knots. Seas 2 to 4 feet,  occasionally to 5 feet. Wave Detail: Southwest 3 feet at  4 seconds and east 2 feet at 9 seconds. Intracoastal waters a  moderate chop.  MONDAY NIGHT  Southwest winds 10 to 15 knots, becoming  northwest 20 to 25 knots after midnight. Seas 2 to 3 feet. Wave  Detail: East 3 feet at 9 seconds and southwest 2 feet at  3 seconds. Intracoastal waters rough. A slight chance of showers.  TUESDAY  Northeast winds 20 to 25 knots. Seas 3 to 5 feet,  occasionally to 6 feet, building to 5 to 8 feet, occasionally to  10 feet. Intracoastal waters rough. A chance of showers with a  slight chance of thunderstorms.  WEDNESDAY  Northeast winds 10 to 15 knots, diminishing to 5 to  10 knots. Seas 5 to 7 feet, occasionally to 9 feet, subsiding to  4 to 5 feet, occasionally to 6 feet after midnight. Intracoastal  waters a moderate chop. A chance of showers and thunderstorms in  the morning, then a chance of thunderstorms with a slight chance  of showers in the afternoon.    Winds and waves higher in and near thunderstorms.    $$