NWS Marine Forecast


   AMZ400-010230-  Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-  723 AM EDT Thu Apr 30 2026      .SYNOPSIS...    A cold front will move into southeast Georgia today and then into  northeast Florida late tonight through early Friday. This front will  then stall across the northeast Florida waters Friday then begin to  lift north as a warm front Friday night. This front will be  accompanied by scattered showers and a few thunderstorms at times  today through Friday night. A wave of low pressure will then develop  over the Gulf by late Friday night or Saturday, with widespread  showers and possibly a few strong thunderstorms overspreading our  local waters on Saturday, with activity expected to continue into  late Saturday night. Small Craft Advisory conditions may develop on  Saturday as southwest winds increase. The front will shift south of  the northeast Florida waters on Saturday night, resulting in winds  shifting to northerly. Breezy northeast winds are then expected on  Sunday as high pressure builds into the southeastern states.      .GULF STREAM...    The approximate location of the west wall of the Gulf Stream as of  Apr 29, 2026 at 0000 UTC...    54 nautical miles east of Flagler Beach.  58 nautical miles east of Saint Augustine Beach.  70 nautical miles east southeast of Jacksonville Beach.  84 nautical miles east southeast of St Simons Island.    This data derived from NCEP Global RTOFS model.      $$
   AMZ450-452-454-010230-  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-  723 AM EDT Thu Apr 30 2026    TODAY  West winds 10 to 15 knots, becoming south this  afternoon. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail:  East 3 feet at 11 seconds and west 2 feet at 3 seconds.  Intracoastal waters a moderate chop. A chance of showers. A  slight chance of thunderstorms this morning, then a chance of  thunderstorms this afternoon.  TONIGHT  South winds 5 to 10 knots, becoming north after  midnight. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at  4 seconds and east 2 feet at 10 seconds. Intracoastal waters  light chop. A chance of showers with a slight chance of  thunderstorms in the evening.  FRIDAY  Northeast winds 5 to 10 knots, increasing to 10 to  15 knots in the afternoon. Seas 2 to 3 feet. Wave Detail:  Northeast 2 feet at 4 seconds and east 2 feet at 10 seconds.  Intracoastal waters a moderate chop. A chance of showers. A  slight chance of thunderstorms in the morning, then a chance of  thunderstorms in the afternoon.  FRIDAY NIGHT  Northeast winds 10 to 15 knots, becoming west  after midnight. Seas around 3 feet. Wave Detail: Northeast 2 feet  at 4 seconds and east 2 feet at 12 seconds. Intracoastal waters a  moderate chop. A slight chance of thunderstorms in the evening. A  chance of showers.  SATURDAY  Southwest winds 10 to 15 knots, becoming west 15 to  20 knots in the afternoon. Seas 2 to 4 feet, occasionally to  5 feet. Wave Detail: Southwest 3 feet at 4 seconds and northeast  2 feet at 5 seconds. Intracoastal waters choppy. A chance of  showers with a slight chance of thunderstorms in the morning,  then showers with a chance of thunderstorms in the afternoon.  SATURDAY NIGHT  Northwest winds 15 to 20 knots, becoming north  20 to 25 knots with gusts up to 35 knots after midnight. Seas  4 to 6 feet, occasionally to 8 feet. Wave Detail: North 5 feet at  5 seconds and east 2 feet at 10 seconds. Intracoastal waters  rough. A chance of showers with a slight chance of thunderstorms  in the evening, then a slight chance of showers after midnight.  SUNDAY  North winds 20 to 25 knots, becoming northeast 10 to  15 knots. Seas 4 to 6 feet, occasionally to 8 feet, subsiding to  3 to 4 feet, occasionally to 5 feet after midnight. Intracoastal  waters rough. A slight chance of showers in the morning.  MONDAY  Northeast winds 5 to 10 knots, becoming southeast. Seas  2 to 4 feet, occasionally to 5 feet. Intracoastal waters light  chop.    Winds and waves higher in and near thunderstorms.    $$