Hazardous marine condition(s):
Small Craft Advisory
AMZ400-232100-
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-
224 AM EDT Wed Sep 23 2026
.SYNOPSIS...
Low pressure will strengthen well to the northeast of the region
through the end of the week, tracking further to the north of the
area through the weekend. High pressure will build down the eastern
US coastal states Wednesday causing a backdoor cold front to sweep
southward. The gradient between the high, and the front trailing
from the low to the northeast, will result in enhanced northeasterly
winds and waves beginning later today and lasting through at least
Friday. A period of Gale conditions will be possible Thursday into
Thursday night. These conditions ease this weekend as high pressure
weakens and the aforementioned low pulls further away from the area.
.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.
$$
AMZ450-470-232100- Coastal waters from Altamaha Sound to Fernandina Beach FL out 20 NM- Waters from Altamaha Sound GA to Fernandina Beach FL from 20 to 60 NM- 224 AM EDT Wed Sep 23 2026 SMALL CRAFT ADVISORY IN EFFECT FROM 11 AM EDT THIS MORNING THROUGH FRIDAY EVENING REST OF TONIGHT Northeast winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: East 3 feet at 7 seconds. Intracoastal waters a moderate chop. A chance of showers and thunderstorms. WEDNESDAY Northeast winds 15 to 20 knots, increasing to 20 to 25 knots in the afternoon. Seas 3 to 4 feet, occasionally to 5 feet, building to 4 to 6 feet, occasionally to 8 feet in the afternoon. Wave Detail: Northeast 4 feet at 7 seconds, becoming northeast 6 feet at 6 seconds. Intracoastal waters rough. Showers likely with a chance of thunderstorms. WEDNESDAY NIGHT Northeast winds 20 to 25 knots. Seas 6 to 8 feet, occasionally to 10 feet. Wave Detail: Northeast 8 feet at 7 seconds. Intracoastal waters rough. A chance of thunderstorms. Showers likely, mainly in the evening. THURSDAY North winds 25 to 30 knots with gusts up to 40 knots. Seas 8 to 11 feet, occasionally to 14 feet. Wave Detail: Northeast 10 feet at 8 seconds. Intracoastal waters very rough. A chance of showers with a slight chance of thunderstorms. THURSDAY NIGHT North winds 25 to 30 knots with gusts up to 40 knots. Seas 9 to 12 feet, occasionally to 15 feet. Wave Detail: Northeast 12 feet at 11 seconds. Intracoastal waters very rough. A chance of showers with a slight chance of thunderstorms in the evening, then a slight chance of showers after midnight. FRIDAY North winds 20 to 25 knots with gusts up to 35 knots, diminishing to 15 to 20 knots in the afternoon. Seas 8 to 11 feet, occasionally to 14 feet. Wave Detail: Northeast 11 feet at 12 seconds. Intracoastal waters rough. FRIDAY NIGHT North winds 10 to 15 knots. Seas 6 to 9 feet, occasionally to 11 feet. Intracoastal waters a moderate chop. SATURDAY North winds 10 to 15 knots, becoming northeast 5 to 10 knots. Seas 5 to 7 feet, occasionally to 9 feet, subsiding to 3 to 5 feet, occasionally to 6 feet after midnight. Intracoastal waters a moderate chop. SUNDAY North winds 5 to 10 knots, becoming south. Seas 3 to 5 feet, occasionally to 6 feet, subsiding to 2 to 3 feet after midnight. Intracoastal waters light chop. Winds and waves higher in and near thunderstorms. $$
AMZ450-470-232100- Coastal waters from Altamaha Sound to Fernandina Beach FL out 20 NM- Waters from Altamaha Sound GA to Fernandina Beach FL from 20 to 60 NM- 224 AM EDT Wed Sep 23 2026 SMALL CRAFT ADVISORY IN EFFECT FROM 11 AM EDT THIS MORNING THROUGH FRIDAY EVENING REST OF TONIGHT Northeast winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: East 3 feet at 7 seconds. Intracoastal waters a moderate chop. A chance of showers and thunderstorms. WEDNESDAY Northeast winds 15 to 20 knots, increasing to 20 to 25 knots in the afternoon. Seas 3 to 4 feet, occasionally to 5 feet, building to 4 to 6 feet, occasionally to 8 feet in the afternoon. Wave Detail: Northeast 4 feet at 7 seconds, becoming northeast 6 feet at 6 seconds. Intracoastal waters rough. Showers likely with a chance of thunderstorms. WEDNESDAY NIGHT Northeast winds 20 to 25 knots. Seas 6 to 8 feet, occasionally to 10 feet. Wave Detail: Northeast 8 feet at 7 seconds. Intracoastal waters rough. A chance of thunderstorms. Showers likely, mainly in the evening. THURSDAY North winds 25 to 30 knots with gusts up to 40 knots. Seas 8 to 11 feet, occasionally to 14 feet. Wave Detail: Northeast 10 feet at 8 seconds. Intracoastal waters very rough. A chance of showers with a slight chance of thunderstorms. THURSDAY NIGHT North winds 25 to 30 knots with gusts up to 40 knots. Seas 9 to 12 feet, occasionally to 15 feet. Wave Detail: Northeast 12 feet at 11 seconds. Intracoastal waters very rough. A chance of showers with a slight chance of thunderstorms in the evening, then a slight chance of showers after midnight. FRIDAY North winds 20 to 25 knots with gusts up to 35 knots, diminishing to 15 to 20 knots in the afternoon. Seas 8 to 11 feet, occasionally to 14 feet. Wave Detail: Northeast 11 feet at 12 seconds. Intracoastal waters rough. FRIDAY NIGHT North winds 10 to 15 knots. Seas 6 to 9 feet, occasionally to 11 feet. Intracoastal waters a moderate chop. SATURDAY North winds 10 to 15 knots, becoming northeast 5 to 10 knots. Seas 5 to 7 feet, occasionally to 9 feet, subsiding to 3 to 5 feet, occasionally to 6 feet after midnight. Intracoastal waters a moderate chop. SUNDAY North winds 5 to 10 knots, becoming south. Seas 3 to 5 feet, occasionally to 6 feet, subsiding to 2 to 3 feet after midnight. Intracoastal waters light chop. Winds and waves higher in and near thunderstorms. $$