Hazardous marine condition(s):
Small Craft Advisory
AMZ400-172345-
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-
432 AM EDT Thu Sep 17 2026
.SYNOPSIS...
Breezy northeast winds and elevated seas gradually subside this
morning as high pressure ridging builds down the eastern seaboard.
Small Craft Advisory conditions decrease to small craft exercise
caution today. Rounds of isolated showers will move over the area
waters today. Another area of high pressure builds across the
eastern seaboard continuing onshore flow into early next week. An
upper disturbance moving over Florida and into the Gulf will bring
scattered to numerous showers and storms over the waters Friday into
the weekend.
.GULF STREAM...
The approximate location of the west wall of the Gulf Stream as of
Sep 16, 2026 at 0000 UTC...
54 nautical miles east of Flagler Beach.
58 nautical miles east of Saint Augustine Beach.
70 nautical miles east southeast of Jacksonville Beach.
71 nautical miles east southeast of St Simons Island.
This data derived from NCEP Global RTOFS model.
$$
AMZ452-454-172345- Coastal waters from Fernandina Beach to St. Augustine FL out 20 NM- Coastal waters from St. Augustine to Flagler Beach FL out 20 NM- 432 AM EDT Thu Sep 17 2026 SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 AM EDT THIS MORNING TODAY Northeast winds 15 to 20 knots. Seas 5 to 7 feet, occasionally to 8 feet. Wave Detail: Northeast 6 feet at 7 seconds. Intracoastal waters choppy. A slight chance of showers. TONIGHT Northeast winds 15 to 20 knots, diminishing to 10 to 15 knots after midnight. Seas 4 to 5 feet, occasionally to 6 feet. Wave Detail: Northeast 5 feet at 7 seconds. Intracoastal waters choppy. A slight chance of showers. FRIDAY Northeast winds 10 to 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: Northeast 4 feet at 7 seconds. Intracoastal waters a moderate chop. A slight chance of showers and thunderstorms. FRIDAY NIGHT East winds 5 to 10 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at 7 seconds. Intracoastal waters light chop. A slight chance of thunderstorms in the evening. A slight chance of showers. SATURDAY Northeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: East 3 feet at 7 seconds. Intracoastal waters light chop. A slight chance of thunderstorms. A chance of showers, mainly in the morning. SATURDAY NIGHT East winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: East 3 feet at 7 seconds. Intracoastal waters light chop. A slight chance of showers and thunderstorms in the evening, then a chance of showers and thunderstorms after midnight. SUNDAY THROUGH MONDAY Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Intracoastal waters light chop. Showers likely with a chance of thunderstorms. Winds and waves higher in and near thunderstorms. $$
AMZ452-454-172345- Coastal waters from Fernandina Beach to St. Augustine FL out 20 NM- Coastal waters from St. Augustine to Flagler Beach FL out 20 NM- 432 AM EDT Thu Sep 17 2026 SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 AM EDT THIS MORNING TODAY Northeast winds 15 to 20 knots. Seas 5 to 7 feet, occasionally to 8 feet. Wave Detail: Northeast 6 feet at 7 seconds. Intracoastal waters choppy. A slight chance of showers. TONIGHT Northeast winds 15 to 20 knots, diminishing to 10 to 15 knots after midnight. Seas 4 to 5 feet, occasionally to 6 feet. Wave Detail: Northeast 5 feet at 7 seconds. Intracoastal waters choppy. A slight chance of showers. FRIDAY Northeast winds 10 to 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: Northeast 4 feet at 7 seconds. Intracoastal waters a moderate chop. A slight chance of showers and thunderstorms. FRIDAY NIGHT East winds 5 to 10 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at 7 seconds. Intracoastal waters light chop. A slight chance of thunderstorms in the evening. A slight chance of showers. SATURDAY Northeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: East 3 feet at 7 seconds. Intracoastal waters light chop. A slight chance of thunderstorms. A chance of showers, mainly in the morning. SATURDAY NIGHT East winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: East 3 feet at 7 seconds. Intracoastal waters light chop. A slight chance of showers and thunderstorms in the evening, then a chance of showers and thunderstorms after midnight. SUNDAY THROUGH MONDAY Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Intracoastal waters light chop. Showers likely with a chance of thunderstorms. Winds and waves higher in and near thunderstorms. $$