Hazardous marine condition(s):
Small Craft Advisory
AMZ400-230945-
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-
243 PM EDT Tue Sep 22 2026
.SYNOPSIS...
Low pressure will gather and strengthen to the northeast of the
region this period, then tracks further to the north of the area.
High pressure will build down the eastern US coastal states through
the week, then weaken over the weekend. The gradient between the
ridge and the trough trailing from the low to the northeast will
yield small craft advisory conditions beginning Wednesday, and
lasting through Friday. A period of Gale conditions will be possible
Thursday into Thursday night.
.GULF STREAM...
The approximate location of the west wall of the Gulf Stream as of
Sep 22, 2026 at 0000 UTC...
46 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.
$$
AMZ452-454-472-474-230945- Coastal waters from Fernandina Beach to St. Augustine FL out 20 NM- Coastal waters from St. Augustine to Flagler Beach FL out 20 NM- Waters from Fernandina Beach to St. Augustine FL from 20 to 60 NM- Waters from St. Augustine to Flagler Beach FL from 20 to 60 NM- 243 PM EDT Tue Sep 22 2026 SMALL CRAFT ADVISORY IN EFFECT FROM WEDNESDAY EVENING THROUGH LATE FRIDAY NIGHT REST OF TODAY Northeast winds around 10 knots. Seas 2 to 3 feet. Wave Detail: East 2 feet at 7 seconds. Intracoastal waters light chop. A slight chance of showers and thunderstorms. TONIGHT Northeast winds 5 to 10 knots, becoming north after midnight. 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 chance of showers with a slight chance of thunderstorms after midnight. WEDNESDAY North winds 10 to 15 knots, becoming northeast 15 to 20 knots in the afternoon. Seas 2 to 3 feet, building to 3 to 5 feet, occasionally to 6 feet in the afternoon. Wave Detail: Northeast 3 feet at 7 seconds, becoming northeast 4 feet at 7 seconds. Intracoastal waters choppy. A chance of thunderstorms. A chance of showers in the morning, then showers likely in the afternoon. WEDNESDAY NIGHT Northeast winds 15 to 20 knots, increasing to 20 to 25 knots after midnight. Seas 3 to 5 feet, occasionally to 6 feet, building to 5 to 7 feet, occasionally to 9 feet after midnight. Wave Detail: Northeast 5 feet at 6 seconds, becoming northeast 6 feet at 7 seconds. Intracoastal waters rough. A chance of thunderstorms. A chance of showers in the evening, then showers likely after midnight. THURSDAY North winds 20 to 25 knots, increasing to 25 to 30 knots in the afternoon. Seas building to 8 to 11 feet, occasionally to 14 feet. Wave Detail: Northeast 8 feet at 7 seconds, becoming northeast 10 feet at 8 seconds. Intracoastal waters very rough. Showers. A slight chance of thunderstorms in the morning, then a chance of thunderstorms in the afternoon. THURSDAY NIGHT Northeast winds 25 to 30 knots. Seas 9 to 12 feet, occasionally to 15 feet. Wave Detail: Northeast 11 feet at 8 seconds and northeast 10 feet at 11 seconds. Intracoastal waters very rough. A slight chance of thunderstorms. Showers likely, mainly in the evening. FRIDAY North winds 20 to 25 knots. Seas 9 to 12 feet, occasionally to 15 feet, subsiding to 7 to 10 feet, occasionally to 13 feet. Intracoastal waters rough. A chance of showers with a slight chance of thunderstorms. SATURDAY North winds 15 to 20 knots, becoming northeast 10 to 15 knots. Seas 5 to 8 feet, occasionally to 10 feet. Intracoastal waters choppy. Winds and waves higher in and near thunderstorms. $$
AMZ452-454-472-474-230945- Coastal waters from Fernandina Beach to St. Augustine FL out 20 NM- Coastal waters from St. Augustine to Flagler Beach FL out 20 NM- Waters from Fernandina Beach to St. Augustine FL from 20 to 60 NM- Waters from St. Augustine to Flagler Beach FL from 20 to 60 NM- 243 PM EDT Tue Sep 22 2026 SMALL CRAFT ADVISORY IN EFFECT FROM WEDNESDAY EVENING THROUGH LATE FRIDAY NIGHT REST OF TODAY Northeast winds around 10 knots. Seas 2 to 3 feet. Wave Detail: East 2 feet at 7 seconds. Intracoastal waters light chop. A slight chance of showers and thunderstorms. TONIGHT Northeast winds 5 to 10 knots, becoming north after midnight. 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 chance of showers with a slight chance of thunderstorms after midnight. WEDNESDAY North winds 10 to 15 knots, becoming northeast 15 to 20 knots in the afternoon. Seas 2 to 3 feet, building to 3 to 5 feet, occasionally to 6 feet in the afternoon. Wave Detail: Northeast 3 feet at 7 seconds, becoming northeast 4 feet at 7 seconds. Intracoastal waters choppy. A chance of thunderstorms. A chance of showers in the morning, then showers likely in the afternoon. WEDNESDAY NIGHT Northeast winds 15 to 20 knots, increasing to 20 to 25 knots after midnight. Seas 3 to 5 feet, occasionally to 6 feet, building to 5 to 7 feet, occasionally to 9 feet after midnight. Wave Detail: Northeast 5 feet at 6 seconds, becoming northeast 6 feet at 7 seconds. Intracoastal waters rough. A chance of thunderstorms. A chance of showers in the evening, then showers likely after midnight. THURSDAY North winds 20 to 25 knots, increasing to 25 to 30 knots in the afternoon. Seas building to 8 to 11 feet, occasionally to 14 feet. Wave Detail: Northeast 8 feet at 7 seconds, becoming northeast 10 feet at 8 seconds. Intracoastal waters very rough. Showers. A slight chance of thunderstorms in the morning, then a chance of thunderstorms in the afternoon. THURSDAY NIGHT Northeast winds 25 to 30 knots. Seas 9 to 12 feet, occasionally to 15 feet. Wave Detail: Northeast 11 feet at 8 seconds and northeast 10 feet at 11 seconds. Intracoastal waters very rough. A slight chance of thunderstorms. Showers likely, mainly in the evening. FRIDAY North winds 20 to 25 knots. Seas 9 to 12 feet, occasionally to 15 feet, subsiding to 7 to 10 feet, occasionally to 13 feet. Intracoastal waters rough. A chance of showers with a slight chance of thunderstorms. SATURDAY North winds 15 to 20 knots, becoming northeast 10 to 15 knots. Seas 5 to 8 feet, occasionally to 10 feet. Intracoastal waters choppy. Winds and waves higher in and near thunderstorms. $$