NWS Marine Forecast


   AMZ400-052100-  Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-  225 AM EDT Wed Aug 5 2026      .SYNOPSIS...    High pressure centered over Bermuda will build westward toward the  U.S. east coast through the weekend shifting flow from southeasterly  today to more easterly late this week and into the upcoming weekend.  Daily rounds of showers and thunderstorms will also continue daily,  some of which will produce gusty winds, heavy rain, and frequent  lightning strikes.      .GULF STREAM...    The approximate location of the west wall of the Gulf Stream as of  Aug 04, 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.  66 nautical miles east southeast of St Simons Island.    This data derived from NCEP Global RTOFS model.      $$
   AMZ470-472-474-052100-  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-  225 AM EDT Wed Aug 5 2026    REST OF TONIGHT  Southwest winds 10 to 15 knots. Seas around  3 feet. Wave Detail: South 3 feet at 4 seconds and southeast  3 feet at 8 seconds.  WEDNESDAY  South winds 5 to 10 knots, becoming southeast 10 to  15 knots in the afternoon. Seas 2 to 3 feet. Wave Detail:  Southeast 3 feet at 8 seconds. A slight chance of showers and  thunderstorms.  WEDNESDAY NIGHT  Southeast winds 10 to 15 knots, diminishing to  5 to 10 knots after midnight. Seas 2 to 3 feet. Wave Detail:  Southeast 3 feet at 7 seconds. A slight chance of showers and  thunderstorms in the evening, then a chance of showers and  thunderstorms after midnight.  THURSDAY  Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave  Detail: Southeast 3 feet at 7 seconds. A chance of showers and  thunderstorms.  THURSDAY NIGHT  Southeast winds 10 to 15 knots. Seas 2 to  4 feet, occasionally to 5 feet. Wave Detail: Southeast 3 feet at  7 seconds. A slight chance of showers and thunderstorms after  midnight.  FRIDAY  East winds 10 to 15 knots. Seas 3 to 4 feet,  occasionally to 5 feet. Wave Detail: East 4 feet at 7 seconds.  Showers likely. A slight chance of thunderstorms in the morning,  then a chance of thunderstorms in the afternoon.  FRIDAY NIGHT  Southeast winds 10 to 15 knots. Seas 3 to 5 feet,  occasionally to 6 feet. A chance of showers. A chance of  thunderstorms, mainly in the evening.  SATURDAY  Southeast winds 5 to 10 knots. Seas 3 to 4 feet,  occasionally to 5 feet. A chance of showers and thunderstorms,  mainly in the morning.  SUNDAY  South winds 5 to 10 knots. Seas around 3 feet. A slight  chance of showers and thunderstorms in the morning. A slight  chance of showers and thunderstorms through the night.    Winds and seas higher in and near thunderstorms.    $$