AMZ400-141330-
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-
624 PM EDT Sun Sep 13 2026
.SYNOPSIS...
Offshore winds will continue across the area water on Monday, except
for a sea breeze which will shift winds to the southeast and south
during the afternoon hours. 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. Improving
conditions are expected by Friday as onshore winds weaken and seas
gradually lower.
.GULF STREAM...
The approximate location of the west wall of the Gulf Stream as of
Sep 13, 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.
71 nautical miles east southeast of St Simons Island.
This data derived from NCEP Global RTOFS model.
$$
AMZ450-452-454-141330- 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- 624 PM EDT Sun Sep 13 2026 REST OF TONIGHT Southeast winds 5 to 10 knots, becoming west. Seas around 2 feet. Wave Detail: Southeast 2 feet at 8 seconds. Intracoastal waters light chop. A chance of showers and thunderstorms early, then a chance of showers with a slight chance of thunderstorms this evening. MONDAY Northwest winds 5 to 10 knots, becoming east in the afternoon. Seas around 2 feet. Wave Detail: East 2 feet at 9 seconds. Intracoastal waters light chop. MONDAY NIGHT Southeast winds around 5 knots, becoming northeast 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 4 feet, occasionally to 5 feet, building to 4 to 6 feet, occasionally to 8 feet in the afternoon. Wave Detail: Northeast 3 feet at 9 seconds, becoming northeast 6 feet at 6 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 25 to 30 knots, diminishing to 20 to 25 knots after midnight. Seas 6 to 8 feet, occasionally to 10 feet. Wave Detail: Northeast 8 feet at 7 seconds. Intracoastal waters very rough. A chance of showers in the evening. WEDNESDAY AND WEDNESDAY NIGHT Northeast winds 25 to 30 knots. Seas 6 to 8 feet, occasionally to 10 feet. Wave Detail: Northeast 8 feet at 7 seconds. Intracoastal waters very rough. A slight chance of showers and thunderstorms. THURSDAY Northeast winds 20 to 25 knots, diminishing to 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. 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 chance of showers with a slight chance of thunderstorms through the night. FRIDAY Northeast winds 10 to 15 knots, becoming east 5 to 10 knots. Seas 2 to 4 feet, occasionally to 5 feet. Intracoastal waters a moderate chop. Showers likely with a slight chance of thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon. A slight chance of showers in the evening. A slight chance of thunderstorms through the night. A chance of showers after midnight. Winds and waves higher in and near thunderstorms. $$
AMZ450-452-454-141330- 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- 624 PM EDT Sun Sep 13 2026 REST OF TONIGHT Southeast winds 5 to 10 knots, becoming west. Seas around 2 feet. Wave Detail: Southeast 2 feet at 8 seconds. Intracoastal waters light chop. A chance of showers and thunderstorms early, then a chance of showers with a slight chance of thunderstorms this evening. MONDAY Northwest winds 5 to 10 knots, becoming east in the afternoon. Seas around 2 feet. Wave Detail: East 2 feet at 9 seconds. Intracoastal waters light chop. MONDAY NIGHT Southeast winds around 5 knots, becoming northeast 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 4 feet, occasionally to 5 feet, building to 4 to 6 feet, occasionally to 8 feet in the afternoon. Wave Detail: Northeast 3 feet at 9 seconds, becoming northeast 6 feet at 6 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 25 to 30 knots, diminishing to 20 to 25 knots after midnight. Seas 6 to 8 feet, occasionally to 10 feet. Wave Detail: Northeast 8 feet at 7 seconds. Intracoastal waters very rough. A chance of showers in the evening. WEDNESDAY AND WEDNESDAY NIGHT Northeast winds 25 to 30 knots. Seas 6 to 8 feet, occasionally to 10 feet. Wave Detail: Northeast 8 feet at 7 seconds. Intracoastal waters very rough. A slight chance of showers and thunderstorms. THURSDAY Northeast winds 20 to 25 knots, diminishing to 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. 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 chance of showers with a slight chance of thunderstorms through the night. FRIDAY Northeast winds 10 to 15 knots, becoming east 5 to 10 knots. Seas 2 to 4 feet, occasionally to 5 feet. Intracoastal waters a moderate chop. Showers likely with a slight chance of thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon. A slight chance of showers in the evening. A slight chance of thunderstorms through the night. A chance of showers after midnight. Winds and waves higher in and near thunderstorms. $$