Hazardous marine condition(s):
Small Craft Advisory
AMZ400-220800-
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-
135 PM EDT Wed Oct 21 2026
.SYNOPSIS...
A tight pressure gradient between high pressure over the eastern
states and a strong low pressure well offshore over the western
Atlantic will continue to support hazardous marine conditions across
the area waters this week. Rough seas will continue to slowly
diminish through early Friday morning. However, small craft advisory
level conditions will continue into mid to late week especially for
offshore waters. Another surge of Northeast winds to Gale force is
expected to develop late Friday and continue into this weekend.
.GULF STREAM...
The approximate location of the west wall of the Gulf Stream as of
Oct 21, 2026 at 0000 UTC...
58 nautical miles east of Flagler Beach.
62 nautical miles east of Saint Augustine Beach.
74 nautical miles east southeast of Jacksonville Beach.
80 nautical miles east southeast of St Simons Island.
This data derived from NCEP Global RTOFS model.
$$
AMZ452-454-220800- Coastal waters from Fernandina Beach to St. Augustine FL out 20 NM- Coastal waters from St. Augustine to Flagler Beach FL out 20 NM- 135 PM EDT Wed Oct 21 2026 SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT REST OF TODAY Northeast winds 15 to 20 knots. Seas 6 to 7 feet, occasionally to 9 feet. Wave Detail: Northeast 7 feet at 11 seconds. Intracoastal waters choppy. TONIGHT Northeast winds 15 to 20 knots, becoming north 10 to 15 knots after midnight. Seas 5 to 7 feet, occasionally to 9 feet. Wave Detail: Northeast 7 feet at 11 seconds. Intracoastal waters choppy. THURSDAY North winds 10 to 15 knots. Seas 5 to 6 feet, occasionally to 8 feet. Wave Detail: Northeast 6 feet at 12 seconds. Intracoastal waters a moderate chop. THURSDAY NIGHT Northeast winds 10 to 15 knots. Seas 5 to 6 feet, occasionally to 8 feet. Wave Detail: Northeast 6 feet at 13 seconds. Intracoastal waters a moderate chop. FRIDAY Northeast winds 15 to 20 knots, increasing to 20 to 25 knots in the afternoon. Seas 5 to 7 feet, occasionally to 9 feet. Wave Detail: Northeast 6 feet at 12 seconds. Intracoastal waters rough. FRIDAY NIGHT Northeast winds 20 to 25 knots. Gusts up to 35 knots after midnight. Seas 6 to 9 feet, occasionally to 11 feet. Wave Detail: Northeast 9 feet at 7 seconds. Intracoastal waters rough. A chance of showers with a slight chance of thunderstorms. SATURDAY Northeast winds 25 to 35 knots, becoming 30 to 35 knots. Seas 8 to 11 feet, occasionally to 14 feet, building to 12 to 14 feet, occasionally to 18 feet. Intracoastal waters extremely rough. Showers. A slight chance of thunderstorms through the night, then a slight chance of showers after midnight. SUNDAY Northeast winds 30 to 35 knots. Seas 12 to 15 feet, occasionally to 19 feet. Intracoastal waters extremely rough. A chance of showers in the morning, then showers likely in the afternoon. A chance of showers through the night. Winds and waves higher in and near thunderstorms. $$
AMZ452-454-220800- Coastal waters from Fernandina Beach to St. Augustine FL out 20 NM- Coastal waters from St. Augustine to Flagler Beach FL out 20 NM- 135 PM EDT Wed Oct 21 2026 SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT REST OF TODAY Northeast winds 15 to 20 knots. Seas 6 to 7 feet, occasionally to 9 feet. Wave Detail: Northeast 7 feet at 11 seconds. Intracoastal waters choppy. TONIGHT Northeast winds 15 to 20 knots, becoming north 10 to 15 knots after midnight. Seas 5 to 7 feet, occasionally to 9 feet. Wave Detail: Northeast 7 feet at 11 seconds. Intracoastal waters choppy. THURSDAY North winds 10 to 15 knots. Seas 5 to 6 feet, occasionally to 8 feet. Wave Detail: Northeast 6 feet at 12 seconds. Intracoastal waters a moderate chop. THURSDAY NIGHT Northeast winds 10 to 15 knots. Seas 5 to 6 feet, occasionally to 8 feet. Wave Detail: Northeast 6 feet at 13 seconds. Intracoastal waters a moderate chop. FRIDAY Northeast winds 15 to 20 knots, increasing to 20 to 25 knots in the afternoon. Seas 5 to 7 feet, occasionally to 9 feet. Wave Detail: Northeast 6 feet at 12 seconds. Intracoastal waters rough. FRIDAY NIGHT Northeast winds 20 to 25 knots. Gusts up to 35 knots after midnight. Seas 6 to 9 feet, occasionally to 11 feet. Wave Detail: Northeast 9 feet at 7 seconds. Intracoastal waters rough. A chance of showers with a slight chance of thunderstorms. SATURDAY Northeast winds 25 to 35 knots, becoming 30 to 35 knots. Seas 8 to 11 feet, occasionally to 14 feet, building to 12 to 14 feet, occasionally to 18 feet. Intracoastal waters extremely rough. Showers. A slight chance of thunderstorms through the night, then a slight chance of showers after midnight. SUNDAY Northeast winds 30 to 35 knots. Seas 12 to 15 feet, occasionally to 19 feet. Intracoastal waters extremely rough. A chance of showers in the morning, then showers likely in the afternoon. A chance of showers through the night. Winds and waves higher in and near thunderstorms. $$