NWS Marine Forecast


   AMZ400-170415-  Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-  912 AM EDT Tue Jun 16 2026      .SYNOPSIS...    The region will be between high pressure to the south southeast, and  a weakening frontal zone stalled just north of the local waters  through at least the next several days. This will continue  predominant southwest to west flow which will become breezy at  times, with periods of Small Craft Exercise Caution conditions,  mainly over the offshore waters and especially during the overnight  hours. The offshore flow will continue to push strong storms with  gusty winds and frequent lightning into the coastal waters at times  through the period, mainly in the afternoon hours. Another frontal  boundary drops southward toward the area Friday into Saturday.    .GULF STREAM...    The approximate location of the west wall of the Gulf Stream as of  Jun 15, 2026 at 0000 UTC...    46 nautical miles east of Flagler Beach.  53 nautical miles east of Saint Augustine Beach.  68 nautical miles east southeast of Jacksonville Beach.  76 nautical miles east southeast of St Simons Island.    This data derived from NCEP Global RTOFS model.      $$
   AMZ450-452-454-170415-  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-  912 AM EDT Tue Jun 16 2026    TODAY  West winds 10 to 15 knots, diminishing to 5 to 10 knots  this afternoon. Seas 2 to 3 feet. Wave Detail: West 2 feet at  3 seconds. Intracoastal waters a moderate chop. A slight chance  of showers this morning, then showers and thunderstorms likely  this afternoon.  TONIGHT  Southwest winds 5 to 10 knots, increasing to 10 to  15 knots after midnight. Seas 2 to 3 feet. Wave Detail: Southwest  2 feet at 3 seconds. Intracoastal waters a moderate chop. A  chance of showers and thunderstorms, mainly in the evening.  WEDNESDAY  Southwest winds 10 to 15 knots. Seas 2 to 3 feet.  Wave Detail: Southwest 2 feet at 4 seconds. Intracoastal waters a  moderate chop. A chance of showers and thunderstorms.  WEDNESDAY NIGHT  Southwest winds 5 to 10 knots. Seas around  2 feet. Wave Detail: South 2 feet at 4 seconds. Intracoastal  waters light chop.  THURSDAY  South winds 10 to 15 knots. Seas 2 to 3 feet. Wave  Detail: South 2 feet at 4 seconds and southeast 2 feet at  8 seconds. Intracoastal waters a moderate chop. A chance of  showers and thunderstorms in the afternoon.  THURSDAY NIGHT  Southwest winds 10 to 15 knots. Seas 2 to  3 feet. Wave Detail: Southeast 3 feet at 5 seconds. Intracoastal  waters a moderate chop. A slight chance of showers and  thunderstorms in the evening.  FRIDAY  Southwest winds 10 to 15 knots. Seas around 2 feet.  Intracoastal waters a moderate chop. A chance of showers and  thunderstorms through the night. A chance of showers with a  slight chance of thunderstorms after midnight.  SATURDAY  West winds 10 to 15 knots, diminishing to 5 to  10 knots. Seas around 2 feet. Intracoastal waters a moderate  chop. A chance of showers with a slight chance of thunderstorms  in the morning, then showers likely with a chance of  thunderstorms in the afternoon. A slight chance of showers and  thunderstorms in the evening.    Winds and waves higher in and near thunderstorms.    $$