NWS Marine Forecast


   AMZ400-092230-  Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-  330 AM EDT Wed Sep 9 2026      .SYNOPSIS...    A coastal will gradually weaken today with waves of gusty showers  and isolated thunderstorms. Elevated combined seas will continue  Small Craft Exercise Caution conditions over the Georgia waters  through late morning today. The trough begins to weaken late tonight  as high pressure builds northeast of the region. The high will then  extend across the Florida peninsula Thursday with southerly winds  and a return of southwest winds Friday into the weekend with the  afternoon east coast sea breeze.      .GULF STREAM...    The approximate location of the west wall of the Gulf Stream as of  Sep 08, 2026 at 0000 UTC...    54 nautical miles east of Flagler Beach.  58 nautical miles east of Saint Augustine Beach.  70 nautical miles east southeast of Jacksonville Beach.  76 nautical miles east southeast of St Simons Island.    This data derived from NCEP Global RTOFS model.      $$
   AMZ452-454-092230-  Coastal waters from Fernandina Beach to St. Augustine FL out  20 NM-  Coastal waters from St. Augustine to Flagler Beach FL out 20 NM-  330 AM EDT Wed Sep 9 2026    TODAY  East winds around 10 knots. Seas around 4 feet,  occasionally to 5 feet. Wave Detail: Northeast 4 feet at  8 seconds. Intracoastal waters light chop. A slight chance of  thunderstorms. A chance of showers, mainly this morning.  TONIGHT  Southeast winds 5 to 10 knots. Seas 3 to 4 feet,  occasionally to 5 feet. Wave Detail: Northeast 4 feet at  8 seconds. Intracoastal waters light chop.  THURSDAY  Southeast winds 5 to 10 knots. Seas around 3 feet.  Wave Detail: East 3 feet at 8 seconds. Intracoastal waters light  chop. A slight chance of showers in the afternoon.  THURSDAY NIGHT  South winds 5 to 10 knots. Seas 2 to 3 feet.  Wave Detail: East 3 feet at 7 seconds. Intracoastal waters light  chop. A slight chance of showers with isolated thunderstorms.  FRIDAY  Southwest winds around 5 knots, becoming southeast in  the afternoon. Seas 2 to 3 feet. Wave Detail: East 3 feet at  7 seconds. Intracoastal waters light chop. A chance of showers  and thunderstorms in the afternoon.  FRIDAY NIGHT  South winds 5 to 10 knots. Seas 2 to 3 feet. Wave  Detail: Southeast 2 feet at 3 seconds and east 2 feet at  7 seconds. Intracoastal waters light chop. A slight chance of  showers with isolated thunderstorms.  SATURDAY THROUGH SUNDAY  South winds 5 to 10 knots. Seas 2 to  3 feet. Intracoastal waters light chop. A chance of showers and  thunderstorms.    Winds and waves higher in and near thunderstorms.    $$