NWS Marine Forecast


   AMZ400-272100-  Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-  225 AM EDT Sat Jun 27 2026      .SYNOPSIS...    Atlantic high pressure will extend westward across the Florida  Peninsula just south of the area waters through the weekend. A  pattern of overnight to early morning light westerly offshore winds  and afternoon southeasterly winds expected due to sea breeze  circulations. Afternoon and early evening isolated to scattered  storms will develop across the nearshore waters each day into  Sunday. A weak back door frontal boundary will approach the waters  on Monday and stall over the waters Tuesday into Wednesday,  supporting increased coverage for showers and thunderstorms for  early next week.      .GULF STREAM...    The approximate location of the west wall of the Gulf Stream as of  Jun 26, 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.  71 nautical miles east southeast of St Simons Island.    This data derived from NCEP Global RTOFS model.      $$
   AMZ470-472-474-272100-  Waters from Altamaha Sound GA to Fernandina Beach FL from 20 to  60 NM-  Waters from Fernandina Beach to St. Augustine FL from 20 to 60 NM-  Waters from St. Augustine to Flagler Beach FL from 20 to 60 NM-  225 AM EDT Sat Jun 27 2026    REST OF TONIGHT  South winds 10 to 15 knots. Seas around  3 feet. Wave Detail: South 3 feet at 5 seconds and east 2 feet at  8 seconds.  SATURDAY  Southwest winds 5 to 10 knots, becoming south 10 to  15 knots in the afternoon. Seas 2 to 3 feet. Wave Detail:  Southeast 3 feet at 8 seconds and southeast 2 feet at 5 seconds.  SATURDAY NIGHT  Southwest winds 10 to 15 knots. Seas around  3 feet. Wave Detail: Southeast 3 feet at 8 seconds and south  2 feet at 4 seconds.  SUNDAY  Southwest winds 5 to 10 knots, becoming south in the  afternoon. Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at  8 seconds.  SUNDAY NIGHT AND MONDAY  South winds 10 to 15 knots. Seas 2 to  3 feet. Wave Detail: Southeast 3 feet at 8 seconds and south  2 feet at 4 seconds. A slight chance of showers and  thunderstorms.  MONDAY NIGHT  Southwest winds 5 to 10 knots, becoming west  after midnight. Seas 2 to 3 feet. Wave Detail: Southeast 3 feet  at 9 seconds. A chance of showers. A chance of thunderstorms,  mainly in the evening.  TUESDAY  Northeast winds 5 to 10 knots. Seas 2 to 3 feet. A  chance of showers and thunderstorms .  WEDNESDAY  Northeast winds 5 to 10 knots, becoming southeast.  Seas 3 to 4 feet, occasionally to 5 feet. A slight chance of  showers and thunderstorms.    Winds and seas higher in and near thunderstorms.    $$