NWS Marine Forecast



 Hazardous marine condition(s):
 Small Craft Advisory
   AMZ400-240200-  Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-  655 AM EDT Mon Mar 23 2026      .SYNOPSIS...    A cold front will move south across the area tonight. This front  will bring embedded thunderstorms mainly tonight into Tuesday. A  surge of northeast winds will develop in the wake of the front with  Gale conditions developing over the Georgia waters and Small Craft  Advisory criteria expected elsewhere. Moderate to strong east to  northeast winds and rough seas are expected to continue from Tuesday  through Wednesday night. High pressure ridge will be over the area  on Thursday and Friday before another cold front moves into the area  Friday night.      .GULF STREAM...    The approximate location of the west wall of the Gulf Stream as of  Mar 22, 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.  68 nautical miles east southeast of St Simons Island.    This data derived from NCEP Global RTOFS model.      $$
   AMZ452-454-240200-  Coastal waters from Fernandina Beach to St. Augustine FL out  20 NM-  Coastal waters from St. Augustine to Flagler Beach FL out 20 NM-  655 AM EDT Mon Mar 23 2026    SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH  WEDNESDAY EVENING    TODAY  West winds 10 to 15 knots, becoming southwest this  afternoon. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail:  West 3 feet at 3 seconds and east 2 feet at 9 seconds.  Intracoastal waters a moderate chop.  TONIGHT  Southwest winds 10 to 15 knots, becoming north 20 to  25 knots with gusts up to 35 knots after midnight. Seas 2 to  4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at  9 seconds and northwest 3 feet at 4 seconds. Intracoastal waters  rough. A slight chance of showers and thunderstorms after  midnight.  TUESDAY  Northeast winds 20 to 25 knots with gusts up to  35 knots. Seas 4 to 6 feet, occasionally to 8 feet, building to  6 to 9 feet, occasionally to 11 feet in the afternoon. Wave  Detail: Northeast 6 feet at 6 seconds, becoming northeast 8 feet  at 7 seconds. Intracoastal waters rough. A chance of showers and  thunderstorms in the morning, then showers likely with a slight  chance of thunderstorms in the afternoon.  TUESDAY NIGHT  Northeast winds 20 to 25 knots with gusts up to  35 knots, diminishing to 15 to 20 knots after midnight. Seas 7 to  9 feet, occasionally to 11 feet. Wave Detail: Northeast 9 feet at  9 seconds. Intracoastal waters rough. Showers likely with a  slight chance of thunderstorms.  WEDNESDAY  Northeast winds 10 to 15 knots. Seas 6 to 8 feet,  occasionally to 10 feet, subsiding to 5 to 6 feet, occasionally  to 8 feet in the afternoon. Wave Detail: East 7 feet at  9 seconds, becoming east 6 feet at 8 seconds. Intracoastal waters  a moderate chop. A chance of showers with a slight chance of  thunderstorms.  WEDNESDAY NIGHT  Northeast winds 10 to 15 knots, diminishing to  5 to 10 knots after midnight. Seas 4 to 5 feet, occasionally to  6 feet. Wave Detail: East 5 feet at 8 seconds. Intracoastal  waters a moderate chop.  THURSDAY THROUGH FRIDAY  South winds 15 to 20 knots. Seas 2 to  4 feet, occasionally to 5 feet. Intracoastal waters choppy.    Winds and waves higher in and near thunderstorms.    $$