AMZ400-202100-
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-
225 AM EDT Sun Sep 20 2026
.SYNOPSIS...
Surface troughing and a disturbance aloft located just west of Tampa
Bay will remain nearly stationary through tonight before lifting
slowly north-northeastward across our local waters by Monday night
and Tuesday. Scattered showers and thunderstorms will remain
possible through tonight, with coverage then increasing from Monday
through at least Thursday. East-northeasterly winds will prevail
through Tuesday, with speeds and seas remaining below Caution levels
outside of thunderstorm activity. Strong high pressure building over
southeastern Canada and New England on Tuesday will begin to wedge
down the southeastern seaboard on Wednesday afternoon and evening,
creating a surge of northeasterly winds that will likely create
Small Craft Advisory conditions across our local waters byThursday
and Friday.
.GULF STREAM...
The approximate location of the west wall of the Gulf Stream as of
Sep 19, 2026 at 0000 UTC...
50 nautical miles east of Flagler Beach.
58 nautical miles east of Saint Augustine Beach.
70 nautical miles east southeast of Jacksonville Beach.
76 nautical miles east southeast of St Simons Island.
This data derived from NCEP Global RTOFS model.
$$
AMZ450-452-454-202100- 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- 225 AM EDT Sun Sep 20 2026 REST OF TONIGHT Northeast winds around 5 knots. Seas around 2 feet. Wave Detail: East 2 feet at 8 seconds. Intracoastal waters smooth. SUNDAY North winds 5 to 10 knots, becoming northeast in the afternoon. Seas around 2 feet. Wave Detail: East 2 feet at 7 seconds. Intracoastal waters light chop. A slight chance of thunderstorms. A slight chance of showers in the morning, then a chance of showers in the afternoon. SUNDAY NIGHT East winds 5 to 10 knots. Seas around 2 feet. Wave Detail: East 2 feet at 10 seconds. Intracoastal waters light chop. A slight chance of showers and thunderstorms. MONDAY North winds 5 to 10 knots, becoming east in the afternoon. Seas 2 to 3 feet. Wave Detail: Northeast 2 feet at 7 seconds and east 2 feet at 8 seconds. Intracoastal waters light chop. A slight chance of thunderstorms. A chance of showers, mainly in the morning. MONDAY NIGHT Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: Northeast 2 feet at 8 seconds and east 2 feet at 8 seconds. Intracoastal waters light chop. A slight chance of showers and thunderstorms in the evening, then a chance of showers and thunderstorms after midnight. TUESDAY AND TUESDAY NIGHT East winds 5 to 10 knots. Seas around 2 feet. Wave Detail: East 2 feet at 8 seconds. Intracoastal waters light chop. A chance of showers and thunderstorms. WEDNESDAY Northeast winds 10 to 15 knots, increasing to 15 to 20 knots. Seas 2 to 4 feet, occasionally to 5 feet. Intracoastal waters choppy. Showers likely with a slight chance of thunderstorms in the morning, then a chance of thunderstorms through the night. A chance of showers. A slight chance of thunderstorms after midnight. THURSDAY Northeast winds 25 to 30 knots, diminishing to 20 to 25 knots. Seas 3 to 5 feet, occasionally to 6 feet, building to 5 to 7 feet, occasionally to 9 feet. Intracoastal waters very rough. Showers likely with a slight chance of thunderstorms in the morning, then a chance of thunderstorms in the afternoon. A chance of showers. A slight chance of thunderstorms in the evening. Winds and waves higher in and near thunderstorms. $$
AMZ450-452-454-202100- 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- 225 AM EDT Sun Sep 20 2026 REST OF TONIGHT Northeast winds around 5 knots. Seas around 2 feet. Wave Detail: East 2 feet at 8 seconds. Intracoastal waters smooth. SUNDAY North winds 5 to 10 knots, becoming northeast in the afternoon. Seas around 2 feet. Wave Detail: East 2 feet at 7 seconds. Intracoastal waters light chop. A slight chance of thunderstorms. A slight chance of showers in the morning, then a chance of showers in the afternoon. SUNDAY NIGHT East winds 5 to 10 knots. Seas around 2 feet. Wave Detail: East 2 feet at 10 seconds. Intracoastal waters light chop. A slight chance of showers and thunderstorms. MONDAY North winds 5 to 10 knots, becoming east in the afternoon. Seas 2 to 3 feet. Wave Detail: Northeast 2 feet at 7 seconds and east 2 feet at 8 seconds. Intracoastal waters light chop. A slight chance of thunderstorms. A chance of showers, mainly in the morning. MONDAY NIGHT Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: Northeast 2 feet at 8 seconds and east 2 feet at 8 seconds. Intracoastal waters light chop. A slight chance of showers and thunderstorms in the evening, then a chance of showers and thunderstorms after midnight. TUESDAY AND TUESDAY NIGHT East winds 5 to 10 knots. Seas around 2 feet. Wave Detail: East 2 feet at 8 seconds. Intracoastal waters light chop. A chance of showers and thunderstorms. WEDNESDAY Northeast winds 10 to 15 knots, increasing to 15 to 20 knots. Seas 2 to 4 feet, occasionally to 5 feet. Intracoastal waters choppy. Showers likely with a slight chance of thunderstorms in the morning, then a chance of thunderstorms through the night. A chance of showers. A slight chance of thunderstorms after midnight. THURSDAY Northeast winds 25 to 30 knots, diminishing to 20 to 25 knots. Seas 3 to 5 feet, occasionally to 6 feet, building to 5 to 7 feet, occasionally to 9 feet. Intracoastal waters very rough. Showers likely with a slight chance of thunderstorms in the morning, then a chance of thunderstorms in the afternoon. A chance of showers. A slight chance of thunderstorms in the evening. Winds and waves higher in and near thunderstorms. $$