AMZ400-210900-
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-
224 PM EDT Fri Mar 20 2026
.SYNOPSIS...
A ridge of high pressure will slowly move south into the area
coastal waters today and then push south of the waters by Saturday
morning. For today, an area of small craft advisory conditions will
exist over the southeast marine waters with winds and seas
diminishing further by this evening and overnight. The high pressure
system will stay south of the waters Saturday through Monday causing
west and southwest winds ahead of an approaching cold front. This
cold front will move into the waters Monday night resulting in a
strong surge of northeasterly winds and building seas into Tuesday.
.GULF STREAM...
The approximate location of the west wall of the Gulf Stream as of
Mar 20, 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.
$$
AMZ452-454-210900- Coastal waters from Fernandina Beach to St. Augustine FL out 20 NM- Coastal waters from St. Augustine to Flagler Beach FL out 20 NM- 224 PM EDT Fri Mar 20 2026 SMALL CRAFT EXERCISE CAUTION IN EFFECT UNTIL 6 PM EDT THIS EVENING REST OF TODAY North winds 10 to 15 knots. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: Northeast 5 feet at 9 seconds. Intracoastal waters a moderate chop. TONIGHT East winds 5 to 10 knots, becoming west after midnight. Seas 4 to 5 feet, occasionally to 6 feet. Wave Detail: East 5 feet at 9 seconds. Intracoastal waters light chop. SATURDAY West winds 5 to 10 knots, becoming south in the afternoon. Seas 4 to 5 feet, occasionally to 6 feet. Wave Detail: East 4 feet at 10 seconds. Intracoastal waters light chop. SATURDAY NIGHT Southwest winds 10 to 15 knots. Seas 4 to 5 feet, occasionally to 6 feet. Wave Detail: East 4 feet at 10 seconds and southwest 2 feet at 3 seconds. Intracoastal waters a moderate chop. SUNDAY West winds 10 to 15 knots, becoming south in the afternoon. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at 10 seconds and west 2 feet at 3 seconds. Intracoastal waters a moderate chop. SUNDAY NIGHT Southwest winds 10 to 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: South 3 feet at 3 seconds and east 3 feet at 9 seconds. Intracoastal waters a moderate chop. MONDAY Southwest winds 10 to 15 knots, becoming west 20 to 25 knots. Seas 2 to 4 feet, occasionally to 5 feet. Intracoastal waters rough. TUESDAY Northeast winds 20 to 25 knots, becoming east 15 to 20 knots. Seas 4 to 6 feet, occasionally to 8 feet, building to 6 to 8 feet, occasionally to 10 feet. Intracoastal waters rough. A slight chance of showers in the morning. A slight chance of thunderstorms through the day. A chance of showers. Winds and waves higher in and near thunderstorms. $$
AMZ452-454-210900- Coastal waters from Fernandina Beach to St. Augustine FL out 20 NM- Coastal waters from St. Augustine to Flagler Beach FL out 20 NM- 224 PM EDT Fri Mar 20 2026 SMALL CRAFT EXERCISE CAUTION IN EFFECT UNTIL 6 PM EDT THIS EVENING REST OF TODAY North winds 10 to 15 knots. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: Northeast 5 feet at 9 seconds. Intracoastal waters a moderate chop. TONIGHT East winds 5 to 10 knots, becoming west after midnight. Seas 4 to 5 feet, occasionally to 6 feet. Wave Detail: East 5 feet at 9 seconds. Intracoastal waters light chop. SATURDAY West winds 5 to 10 knots, becoming south in the afternoon. Seas 4 to 5 feet, occasionally to 6 feet. Wave Detail: East 4 feet at 10 seconds. Intracoastal waters light chop. SATURDAY NIGHT Southwest winds 10 to 15 knots. Seas 4 to 5 feet, occasionally to 6 feet. Wave Detail: East 4 feet at 10 seconds and southwest 2 feet at 3 seconds. Intracoastal waters a moderate chop. SUNDAY West winds 10 to 15 knots, becoming south in the afternoon. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at 10 seconds and west 2 feet at 3 seconds. Intracoastal waters a moderate chop. SUNDAY NIGHT Southwest winds 10 to 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: South 3 feet at 3 seconds and east 3 feet at 9 seconds. Intracoastal waters a moderate chop. MONDAY Southwest winds 10 to 15 knots, becoming west 20 to 25 knots. Seas 2 to 4 feet, occasionally to 5 feet. Intracoastal waters rough. TUESDAY Northeast winds 20 to 25 knots, becoming east 15 to 20 knots. Seas 4 to 6 feet, occasionally to 8 feet, building to 6 to 8 feet, occasionally to 10 feet. Intracoastal waters rough. A slight chance of showers in the morning. A slight chance of thunderstorms through the day. A chance of showers. Winds and waves higher in and near thunderstorms. $$