AMZ400-140030-
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-
524 AM EDT Sun Sep 13 2026
.SYNOPSIS...
Offshore winds will continue across the area waters today and on
Monday, except for a sea breeze which will shift winds to the
southeast and south during the afternoon hours. Another good chance
of a couple of strong thunderstorms this afternoon and evening.
Strong gusty winds and very heavy rainfall will accompany the
stronger storms. On Monday, less thunderstorm activity is expected
and likely be limited to northeast Florida nearshore waters. From
Tuesday through Thursday, a strong northeast wind surge will bring
small craft advisory conditions, rough seas, and numerous showers
and a few thunderstorms over the area waters.
.GULF STREAM...
The approximate location of the west wall of the Gulf Stream as of
Sep 12, 2026 at 0000 UTC...
50 nautical miles east of Flagler Beach.
58 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.
$$
AMZ450-452-454-140030- 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- 524 AM EDT Sun Sep 13 2026 TODAY West winds 5 to 10 knots, becoming southeast this afternoon. Seas around 2 feet. Wave Detail: Southeast 2 feet at 8 seconds. Intracoastal waters light chop. A slight chance of showers and thunderstorms this afternoon. TONIGHT South winds 5 to 10 knots, becoming west after midnight. Seas around 2 feet. Wave Detail: Southeast 2 feet at 9 seconds. Intracoastal waters light chop. A slight chance of showers and thunderstorms in the evening. MONDAY Northwest winds 5 to 10 knots, becoming east in the afternoon. Seas around 2 feet. Wave Detail: Southeast 2 feet at 9 seconds. Intracoastal waters light chop. MONDAY NIGHT Southeast winds around 5 knots, becoming east after midnight. Seas around 2 feet. Wave Detail: East 2 feet at 9 seconds. Intracoastal waters light chop. TUESDAY Northeast winds 15 to 20 knots, increasing to 25 to 30 knots in the afternoon. Seas 2 to 3 feet, building to 4 to 6 feet, occasionally to 8 feet in the afternoon. Wave Detail: Northeast 3 feet at 4 seconds and east 2 feet at 9 seconds, becoming northeast 6 feet at 5 seconds and northeast 5 feet at 9 seconds. Intracoastal waters very rough. A chance of showers with a slight chance of thunderstorms in the morning, then showers likely with a chance of thunderstorms in the afternoon. TUESDAY NIGHT Northeast winds 20 to 25 knots. Seas 5 to 8 feet, occasionally to 10 feet. Wave Detail: Northeast 7 feet at 6 seconds. Intracoastal waters rough. A chance of showers with a slight chance of thunderstorms in the evening, then a slight chance of showers after midnight. WEDNESDAY Northeast winds 25 to 30 knots. Seas 6 to 8 feet, occasionally to 10 feet. Intracoastal waters very rough. A chance of showers and slight chance of thunderstorms. THURSDAY Northeast winds 20 to 25 knots, becoming east 15 to 20 knots. Seas 5 to 7 feet, occasionally to 9 feet, subsiding to 4 to 5 feet, occasionally to 6 feet after midnight. Intracoastal waters rough. Showers likely and a chance of thunderstorms. Winds and waves higher in and near thunderstorms. $$
AMZ450-452-454-140030- 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- 524 AM EDT Sun Sep 13 2026 TODAY West winds 5 to 10 knots, becoming southeast this afternoon. Seas around 2 feet. Wave Detail: Southeast 2 feet at 8 seconds. Intracoastal waters light chop. A slight chance of showers and thunderstorms this afternoon. TONIGHT South winds 5 to 10 knots, becoming west after midnight. Seas around 2 feet. Wave Detail: Southeast 2 feet at 9 seconds. Intracoastal waters light chop. A slight chance of showers and thunderstorms in the evening. MONDAY Northwest winds 5 to 10 knots, becoming east in the afternoon. Seas around 2 feet. Wave Detail: Southeast 2 feet at 9 seconds. Intracoastal waters light chop. MONDAY NIGHT Southeast winds around 5 knots, becoming east after midnight. Seas around 2 feet. Wave Detail: East 2 feet at 9 seconds. Intracoastal waters light chop. TUESDAY Northeast winds 15 to 20 knots, increasing to 25 to 30 knots in the afternoon. Seas 2 to 3 feet, building to 4 to 6 feet, occasionally to 8 feet in the afternoon. Wave Detail: Northeast 3 feet at 4 seconds and east 2 feet at 9 seconds, becoming northeast 6 feet at 5 seconds and northeast 5 feet at 9 seconds. Intracoastal waters very rough. A chance of showers with a slight chance of thunderstorms in the morning, then showers likely with a chance of thunderstorms in the afternoon. TUESDAY NIGHT Northeast winds 20 to 25 knots. Seas 5 to 8 feet, occasionally to 10 feet. Wave Detail: Northeast 7 feet at 6 seconds. Intracoastal waters rough. A chance of showers with a slight chance of thunderstorms in the evening, then a slight chance of showers after midnight. WEDNESDAY Northeast winds 25 to 30 knots. Seas 6 to 8 feet, occasionally to 10 feet. Intracoastal waters very rough. A chance of showers and slight chance of thunderstorms. THURSDAY Northeast winds 20 to 25 knots, becoming east 15 to 20 knots. Seas 5 to 7 feet, occasionally to 9 feet, subsiding to 4 to 5 feet, occasionally to 6 feet after midnight. Intracoastal waters rough. Showers likely and a chance of thunderstorms. Winds and waves higher in and near thunderstorms. $$