NWS Marine Forecast


   AMZ400-260900-  Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-  224 PM EDT Mon May 25 2026      .SYNOPSIS...    A stalled frontal boundary stretching across the Mid-Atlantic states  and the Ohio, Tennessee and lower Mississippi Valleys will lift  slowly northward tonight and Tuesday as Atlantic high pressure  centered near Bermuda expands westward towards the southeastern  seaboard. Breezy southeast to southerly winds will continue through  midweek across our local waters, with Caution conditions prevailing  during the afternoon and evening hours as wind speeds surge to just  below Small Craft Advisory levels. High pressure positioned off the  southeastern seaboard will weaken later this week as a cold front  shifts southward towards our local waters during the upcoming  weekend. Scattered showers and thunderstorms will tend to develop  during the overnight and morning hours on Tuesday and Wednesday,  with activity then increasing in coverage and frequency from Friday  through the upcoming weekend.      .GULF STREAM...    The approximate location of the west wall of the Gulf Stream as of  May 25, 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.  76 nautical miles east southeast of St Simons Island.    This data derived from NCEP Global RTOFS model.      $$
   AMZ450-452-454-260900-  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-  224 PM EDT Mon May 25 2026    SMALL CRAFT EXERCISE CAUTION IN EFFECT THROUGH TUESDAY  MORNING    REST OF TODAY  Southeast winds 15 to 20 knots. Seas 4 to  5 feet, occasionally to 6 feet. Wave Detail: Southeast 5 feet at  5 seconds and southeast 4 feet at 8 seconds. Intracoastal waters  choppy. A slight chance of showers and thunderstorms.  TONIGHT  South winds 15 to 20 knots. Seas 4 to 5 feet,  occasionally to 6 feet. Wave Detail: Southeast 5 feet at  7 seconds. Intracoastal waters choppy. A slight chance of showers  and thunderstorms after midnight.  TUESDAY  Southeast winds 15 to 20 knots. Seas 4 to 5 feet,  occasionally to 6 feet. Wave Detail: Southeast 5 feet at  7 seconds. Intracoastal waters choppy. A slight chance of showers  in the morning.  TUESDAY NIGHT  South winds 15 to 20 knots. Seas 3 to 5 feet,  occasionally to 6 feet. Wave Detail: Southeast 5 feet at  7 seconds. Intracoastal waters choppy. A slight chance of  thunderstorms in the evening. A slight chance of showers.  WEDNESDAY  South winds 10 to 15 knots, becoming southeast 15 to  20 knots in the afternoon. Seas 3 to 4 feet, occasionally to  5 feet. Wave Detail: Southeast 4 feet at 8 seconds. Intracoastal  waters choppy. A chance of showers. A slight chance of  thunderstorms in the morning, then a chance of thunderstorms in  the afternoon.  WEDNESDAY NIGHT  South winds 15 to 20 knots, becoming southwest  5 to 10 knots after midnight. Seas 3 to 5 feet, occasionally to  6 feet. Wave Detail: Southeast 4 feet at 9 seconds and southeast  3 feet at 5 seconds. Intracoastal waters choppy. A chance of  showers with a slight chance of thunderstorms in the evening,  then a slight chance of showers after midnight.  THURSDAY  Southwest winds 5 to 10 knots. Seas 2 to 3 feet.  Intracoastal waters light chop. A slight chance of showers and  thunderstorms in the morning, then a chance of showers and  thunderstorms in the afternoon. A slight chance of showers and  thunderstorms through the night.  FRIDAY  East winds 5 to 10 knots, becoming southwest. Seas 2 to  3 feet. Intracoastal waters light chop. A slight chance of  showers and thunderstorms in the morning, then showers likely  with a chance of thunderstorms through the night. A chance of  showers after midnight.    Winds and waves higher in and near thunderstorms.    $$