NWS Marine Forecast


   AMZ400-220045-  Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-  536 AM EDT Sat Mar 21 2026      .SYNOPSIS...    High pressure centered over the Gulf will gradually shift south  through early next week. Winds will prevail from the west and  southwest through Monday. Southwest winds increase Sunday night into  Monday ahead of an approaching cold front. A surge of northeast to  east winds develop in the wake of the cold front Monday night into  Tuesday with small craft advisories likely.    .GULF STREAM...    The approximate location of the west wall of the Gulf Stream as of  Mar 20, 2026 at 0000 UTC...    46 nautical miles east of Flagler Beach.  53 nautical miles east of Saint Augustine Beach.  64 nautical miles east southeast of Jacksonville Beach.  71 nautical miles east southeast of St Simons Island.    This data derived from NCEP Global RTOFS model.    $$
   AMZ450-452-454-220045-  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-  536 AM EDT Sat Mar 21 2026    TODAY  West winds 10 knots, becoming southwest 5 to 10 knots this  afternoon. Seas 3 to 5 feet, occasionally to 6 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 10 to 15 knots, becoming south 5 to 10 knots  in the afternoon. Seas 2 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: Southwest 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: West 3 feet at 3 seconds and  east 2 feet at 9 seconds. Intracoastal waters a moderate chop.  MONDAY NIGHT  West winds 10 to 15 knots, becoming north 20 to  25 knots after midnight. Seas 2 to 4 feet, occasionally to  5 feet. Wave Detail: East 3 feet at 4 seconds and southwest  2 feet at 3 seconds. Intracoastal waters rough. A slight chance  of showers in the evening.  TUESDAY  Northeast winds 25 to 30 knots, becoming east 15 to  20 knots. Seas 5 to 8 feet, occasionally to 10 feet. Intracoastal  waters very rough. A slight chance of showers in the morning. A  slight chance of thunderstorms through the day. A chance of  showers.  WEDNESDAY  East 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. Intracoastal waters a  moderate chop. A slight chance of showers through the day.    Winds and waves higher in and near thunderstorms.    $$