NWS Marine Forecast


   AMZ400-101400-  Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-  659 PM EDT Thu Jul 9 2026      .SYNOPSIS...    High pressure ridge will remain anchored across central and south  Florida this week as low pressure troughing develops to the north.  This pattern will maintain a southwest flow through early afternoon  followed by late afternoon and evening wind surges from the south  and an increase to Small Craft Exercise Caution wind speeds. The  offshore flow will allow for a slight chance of afternoon and  evening thunderstorm over the local coastal waters through Friday,  with increased chances of thunderstorms Saturday through early next  week. Mariners should expect locally strong wind gusts and frequent  lightning with any developing thunderstorms.      .GULF STREAM...    The approximate location of the west wall of the Gulf Stream as of  Jul 09, 2026 at 0000 UTC...    46 nautical miles east of Flagler Beach.  44 nautical miles east of Saint Augustine Beach.  56 nautical miles east southeast of Jacksonville Beach.  68 nautical miles east southeast of St Simons Island.    This data derived from NCEP Global RTOFS model.      $$
   AMZ450-452-454-101400-  Coastal waters from Altamaha Sound to Fernandina Beach FL out  20 NM-  Coastal waters from Fernandina Beach to St. Augustine FL out  20 NM-  Coastal waters from St. Augustine to Flagler Beach FL out 20 NM-  659 PM EDT Thu Jul 9 2026    SMALL CRAFT EXERCISE CAUTION IN EFFECT UNTIL 1 AM EDT FRIDAY    TONIGHT  South winds 15 to 20 knots, becoming southwest 10 to  15 knots after midnight. Seas 2 to 4 feet, occasionally to  5 feet. Wave Detail: Southeast 3 feet at 5 seconds. Intracoastal  waters choppy. A chance of showers and thunderstorms this  evening.  FRIDAY  Southwest winds 5 to 10 knots, becoming south 15 to  20 knots in the afternoon. Seas 2 to 4 feet, occasionally to  5 feet. Wave Detail: Southeast 3 feet at 5 seconds. Intracoastal  waters choppy. A slight chance of showers and thunderstorms in  the afternoon.  FRIDAY NIGHT  South winds 15 to 20 knots, becoming southwest  10 to 15 knots after midnight. Seas 2 to 4 feet, occasionally to  5 feet. Wave Detail: South 4 feet at 5 seconds. Intracoastal  waters choppy.  SATURDAY  Southwest winds 5 to 10 knots, becoming south 15 to  20 knots in the afternoon. Seas 2 to 3 feet. Wave Detail:  Southeast 3 feet at 5 seconds. Intracoastal waters choppy. A  slight chance of showers and thunderstorms in the afternoon.  SATURDAY NIGHT  Southwest winds 15 to 20 knots, becoming west  10 to 15 knots after midnight. Seas 2 to 4 feet, occasionally to  5 feet. Wave Detail: Southeast 3 feet at 5 seconds. Intracoastal  waters choppy. A slight chance of showers and thunderstorms in  the evening.  SUNDAY AND SUNDAY NIGHT  West winds 5 to 10 knots. Seas 2 to  3 feet. Wave Detail: Southwest 2 feet at 5 seconds and southeast  2 feet at 8 seconds. Intracoastal waters light chop. A chance of  showers and thunderstorms.  MONDAY THROUGH TUESDAY  West winds 5 to 10 knots. Seas around  2 feet. Intracoastal waters light chop. Showers and thunderstorms  likely.    Winds and waves higher in and near thunderstorms.    $$