NWS Marine Forecast


   AMZ400-111615-  Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-  903 PM EDT Mon Aug 10 2026      .SYNOPSIS...    Strong thunderstorms containing gusty winds and frequent lightning  strikes will continue to impact the Georgia waters through the  evening hours before dissipating before midnight. Otherwise,  Atlantic high pressure extending its axis across the northeast  Florida waters tonight will shift south and westward on Tuesday as  troughing takes shape over the southeastern states, with  prevailing west- southwesterly winds expected developing on  Tuesday morning. The afternoon sea breeze will shift winds to  southeasterly over the near shore waters each day through the  upcoming weekend, followed by southerly evening wind surges.  Outside of thunderstorm activity, winds and seas will remain below  Caution levels during the next several days. Another round of  potentially strong thunderstorms will be possible on Tuesday  afternoon and evening, mainly over the Georgia waters, with some  impact possible for portions of the northeast Florida waters into  the evening hours, mainly north of St. Augustine. Scattered mainly  afternoon and evening thunderstorms will remain possible each day  through the upcoming weekend.      .GULF STREAM...    The approximate location of the west wall of the Gulf Stream as of  Aug 10, 2026 at 0000 UTC...    46 nautical miles east of Flagler Beach.  58 nautical miles east of Saint Augustine Beach.  70 nautical miles east southeast of Jacksonville Beach.  66 nautical miles east southeast of St Simons Island.    This data derived from NCEP Global RTOFS model.    $$
   AMZ450-452-454-111615-  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-  903 PM EDT Mon Aug 10 2026    REST OF TONIGHT  South winds 10 to 15 knots, becoming southwest  around 10 knots after midnight. Seas 2 to 3 feet. Wave Detail:  Southeast 3 feet at 7 seconds and south 2 feet at 4 seconds.  Intracoastal waters a light chop. Scattered showers and  thunderstorms across the Georgia waters this evening, with a few  strong storms capable of producing strong wind gusts and frequent  lightning strikes through late this evening.  TUESDAY  West southwest winds 5 to 10 knots, becoming south  southeast 10 to 15 knots in the afternoon. Seas 2 to 3 feet. Wave  Detail: South 2 feet at 4 seconds and southeast 2 feet at 7  seconds. Intracoastal waters a light chop. A chance of showers  and thunderstorms in the afternoon.  TUESDAY NIGHT  South winds 10 to 15 knots, becoming west after  midnight. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at  4 seconds and east 2 feet at 7 seconds. Intracoastal waters a  light chop. A chance of showers and thunderstorms in the evening.  WEDNESDAY  West winds 5 to 10 knots, becoming southeast around  10 knots in the afternoon. Seas around 2 feet. Wave Detail: West  2 feet at 3 seconds and southeast 2 feet at 7 seconds.  Intracoastal waters a light chop. A chance of showers and  thunderstorms in the afternoon.  WEDNESDAY NIGHT  Southwest winds around 10 knots. Seas around  2 feet. Wave Detail: Southwest 2 feet at 3 seconds and southeast  2 feet at 8 seconds. Intracoastal waters a light chop. A slight  chance of showers and thunderstorms in the evening.  THURSDAY  West winds 5 to 10 knots, becoming southeast around 10  knots during the afternoon. Seas around 2 feet. Wave Detail:  West 2 feet at 3 seconds. Intracoastal waters a light chop. A  chance of showers and thunderstorms in the afternoon.  THURSDAY NIGHT  Southwest winds 10 to 15 knots, diminishing to  5 to 10 knots after midnight. Seas around 2 feet. Intracoastal  waters becoming mostly smooth. A slight chance of showers and  thunderstorms in the evening.  FRIDAY THROUGH SATURDAY  Southwest winds 10 to 15 knots,  becoming south around 15 knots during the afternoon and evening.  Seas 2 to 3 feet. Intracoastal waters a moderate chop. A chance  of showers and thunderstorms, mainly during the afternoon and  evening.    Winds and waves higher in and near thunderstorms.    $$