NWS Marine Forecast


   AMZ400-211600-  Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-  857 PM EDT Wed May 20 2026      .SYNOPSIS...    High pressure will be centered to the east northeast this week and  through the weekend. Mainly southeast flow will continue through the  period with a daily sea breeze near the Atlantic Coast. Winds may  meet small craft exercise caution criteria in the late afternoon  and evening from Friday through Monday.      .GULF STREAM...    The approximate location of the west wall of the Gulf Stream as of  May 19, 2026 at 0000 UTC...    50 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.      $$
   AMZ450-452-454-211600-  Coastal waters from Altamaha Sound to Fernandina Beach FL out  20 NM-  Coastal waters from Fernandina Beach to St. Augustine FL out  20 NM-  Coastal waters from St. Augustine to Flagler Beach FL out 20 NM-  857 PM EDT Wed May 20 2026    REST OF TONIGHT  South winds 5 to 10 knots. Seas 2 to 3 feet.  Wave Detail: Southeast 3 feet at 8 seconds. Intracoastal waters  light chop.  THURSDAY  South winds 5 to 10 knots, becoming southeast 10 to  15 knots in the afternoon. Seas 2 to 3 feet. Wave Detail:  Southeast 3 feet at 9 seconds. Intracoastal waters a moderate  chop.  THURSDAY NIGHT  South winds 10 to 15 knots. Seas 3 to 4 feet,  occasionally to 5 feet. Wave Detail: Southeast 3 feet at  9 seconds. Intracoastal waters a moderate chop.  FRIDAY  Southeast winds 5 to 10 knots, increasing to 10 to  15 knots in the afternoon. Seas 3 to 4 feet, occasionally to  5 feet. Wave Detail: Southeast 4 feet at 8 seconds and southeast  2 feet at 4 seconds. Intracoastal waters a moderate chop.  FRIDAY NIGHT  Southeast winds 10 to 15 knots. Seas 3 to 4 feet,  occasionally to 5 feet. Wave Detail: Southeast 4 feet at  8 seconds and southeast 2 feet at 4 seconds. Intracoastal waters  a moderate chop.  SATURDAY  Southeast winds 10 to 15 knots, increasing to 15 to  20 knots in the afternoon. Seas 3 to 4 feet, occasionally to  5 feet. Wave Detail: Southeast 4 feet at 8 seconds. Intracoastal  waters choppy. A slight chance of showers and thunderstorms in  the afternoon.  SATURDAY NIGHT  Southeast winds 10 to 15 knots. Seas 3 to  4 feet, occasionally to 5 feet. Intracoastal waters a moderate  chop.  SUNDAY THROUGH MONDAY  Southeast winds 15 to 20 knots. Seas  3 to 5 feet, occasionally to 6 feet. Intracoastal waters choppy.    Winds and waves higher in and near thunderstorms.    $$