NWS Marine Forecast


   AMZ400-211315-  Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-  503 PM EST Tue Jan 20 2026      .SYNOPSIS...    High pressure over the waters will begin to shift towards the east-  northeast tonight with winds shifting to northeasterly. Winds will  then gradually weaken on Wednesday and Thursday as high pressure  extends its axis across the southeastern states. A few showers will  be possible late this week ahead of a cold front that will be  entering the southeastern states on Friday. Chances for showers will  then increase this weekend as this frontal boundary moves slowly  southward across our local waters, providing for strengthening  northeasterly winds on Saturday that will shift to northwesterly on  Saturday night as this front shifts south of the northeast Florida  waters.    .GULF STREAM...    The approximate location of the west wall of the Gulf Stream as of  Jan 20, 2026 at 0000 UTC...    50 nautical miles east of Flagler Beach.  53 nautical miles east of Saint Augustine Beach.  64 nautical miles east southeast of Jacksonville Beach.  76 nautical miles east southeast of St Simons Island.    This data derived from NCEP Global RTOFS model.    $$
   AMZ450-452-454-211315-  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-  503 PM EST Tue Jan 20 2026    TONIGHT  North to Northeast winds around 15 knots. Seas 3 to 5  feet, occasionally to 6 feet. Wave Detail: North 4 feet at 5  seconds and east 2 feet at 9 seconds. Intracoastal waters a  moderate chop.  WEDNESDAY  Northeast winds 10 to 15 knots. Seas 3 to 4 feet,  occasionally to 5 feet. Wave Detail: Northeast 3 feet at  5 seconds and east 2 feet at 9 seconds. Intracoastal waters a  moderate chop.  WEDNESDAY NIGHT  Northeast winds 5 to 10 knots. Seas 3 to  4 feet, occasionally to 5 feet. Wave Detail: East 3 feet at  10 seconds and northeast 2 feet at 5 seconds. Intracoastal waters  light chop.  THURSDAY  Northeast winds 5 to 10 knots. Seas 3 to 4 feet,  occasionally to 5 feet. Wave Detail: East 4 feet at 10 seconds  and northeast 2 feet at 5 seconds. Intracoastal waters light  chop.  THURSDAY NIGHT AND FRIDAY  Northeast winds 5 to 10 knots. Seas  3 to 4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at  10 seconds. Intracoastal waters light chop.  FRIDAY NIGHT  Northeast winds 5 to 10 knots, increasing to  10 to 15 knots after midnight. Seas 3 to 4 feet, occasionally to  5 feet. Wave Detail: East 4 feet at 10 seconds and northeast  2 feet at 4 seconds. Intracoastal waters a moderate chop. A  slight chance of showers after midnight.  SATURDAY  Northeast winds 15 to 20 knots, becoming northwest  20 to 25 knots. Seas 5 to 7 feet, occasionally to 9 feet.  Intracoastal waters rough. A slight chance of showers in the  morning, then a chance of showers.  SUNDAY  West winds 15 to 20 knots, becoming north 20 to  25 knots. Seas 5 to 8 feet, occasionally to 10 feet. Intracoastal  waters rough. A chance of showers in the morning, then showers  likely in the afternoon. A chance of showers through the night.    $$