NWS Marine Forecast



 Hazardous marine condition(s):
 Small Craft Advisory
   AMZ400-121415-  Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-  703 PM EDT Mon May 11 2026      .SYNOPSIS...    A cold front will cross the waters adjacent to southeast Georgia  late this evening and then the northeast Florida waters during the  early to mid-morning hours on Tuesday morning. A few strong  thunderstorms could impact the near shore waters late this afternoon  and evening, with frequent lightning strikes and briefly gusty winds  possible. Showers and a few embedded thunderstorms will then  overspread our local waters on Tuesday morning, with periods of  heavier downpours possible through Tuesday night. Meanwhile, high  pressure building over the Ohio Valley and Mid-Atlantic states in  the wake of this frontal passage will send a surge of northeasterly  winds down the southeastern seaboard overnight tonight through  Tuesday morning, with Small Craft Advisory conditions developing  initially across the Georgia waters after midnight and then  expanding to the waters from St. Augustine northward early on  Tuesday morning. Showers and embedded thunderstorms, along with  Small Craft Advisory conditions, will continue through late Tuesday  night across our local waters. Showers may linger through Wednesday  before another high pressure center builds southward from the Great  Lakes states late this week, signaling a drying trend that will  continue across our local waters through the upcoming weekend.      .GULF STREAM...    The approximate location of the west wall of the Gulf Stream as of  May 11, 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.      $$
   AMZ452-121415-  Coastal waters from Fernandina Beach to St. Augustine FL out  20 NM-  703 PM EDT Mon May 11 2026    SMALL CRAFT ADVISORY IN EFFECT FROM 6 AM EDT TUESDAY THROUGH  TUESDAY EVENING    REST OF TONIGHT  Southeast winds 10 to 15 knots, becoming south  5 to 10 knots this evening, then becoming north 15 to 20 knots.  Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at 6 seconds.  Intracoastal waters choppy. A slight chance of showers and  thunderstorms early, then showers and thunderstorms likely.  TUESDAY  Northeast winds 15 to 20 knots. Seas 2 to 4 feet,  occasionally to 5 feet. Wave Detail: Northeast 4 feet at  4 seconds. Intracoastal waters choppy. A chance of thunderstorms.  Showers.  TUESDAY NIGHT  East winds 10 to 15 knots. Seas 4 to 5 feet,  occasionally to 6 feet. Wave Detail: East 4 feet at 6 seconds.  Intracoastal waters a moderate chop. A slight chance of  thunderstorms in the evening. A chance of showers.  WEDNESDAY  East winds 5 to 10 knots. Seas 4 to 5 feet,  occasionally to 6 feet. Wave Detail: Northeast 5 feet at  9 seconds. Intracoastal waters light chop. A slight chance of  thunderstorms. A chance of showers, mainly in the morning.  WEDNESDAY NIGHT  South winds 5 to 10 knots, becoming west after  midnight. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail:  Northeast 4 feet at 8 seconds. Intracoastal waters light chop.  THURSDAY AND THURSDAY NIGHT  North winds 10 to 15 knots. Seas  2 to 3 feet. Wave Detail: Northeast 3 feet at 8 seconds.  Intracoastal waters a moderate chop.  FRIDAY THROUGH SATURDAY  South winds 10 to 15 knots. Seas 2 to  3 feet. Intracoastal waters a moderate chop.    Winds and waves higher in and near thunderstorms.    $$