AMZ400-042100-
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-
225 AM EDT Sat Apr 4 2026
.SYNOPSIS...
Ahead of an approaching cool front, onshore winds will veer
southerly across the waters tonight through Sunday. The slowing
front will gradually move north to south through the waters Sunday
night bringing showers and isolated thunderstorms as the front
stalls through Monday. In the wake of the front, high pressure will
build to the north resulting in strengthening northeasterly winds
Monday night and the onset of a multiday period of strong onshore
winds throughout next week, likely requiring an extended Small Craft
Advisory. Much stronger high pressure will wedge along the coast
Wednesday resulting in further strengthening and potential for gales
and seas building potentially up to 15 feet across the waters. As
high pressure breaks away from the eastern seaboard late in the
week, onshore winds will begin to relax.
.GULF STREAM...
The approximate location of the west wall of the Gulf Stream as of
Apr 03, 2026 at 0000 UTC...
50 nautical miles east of Flagler Beach.
53 nautical miles east of Saint Augustine Beach.
64 nautical miles east southeast of Jacksonville Beach.
68 nautical miles east southeast of St Simons Island.
This data derived from NCEP Global RTOFS model.
$$
AMZ450-452-454-042100- Coastal waters from Altamaha Sound to Fernandina Beach FL out 20 NM- Coastal waters from Fernandina Beach to St. Augustine FL out 20 NM- Coastal waters from St. Augustine to Flagler Beach FL out 20 NM- 225 AM EDT Sat Apr 4 2026 REST OF TONIGHT Southeast winds 5 to 10 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at 8 seconds. Intracoastal waters light chop. SATURDAY Southeast winds 5 to 10 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at 8 seconds. Intracoastal waters light chop. SATURDAY NIGHT South winds 5 to 10 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at 8 seconds. Intracoastal waters light chop. SUNDAY South winds 5 to 10 knots, becoming southeast 10 to 15 knots in the afternoon. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: East 4 feet at 9 seconds. Intracoastal waters a moderate chop. A chance of showers with a slight chance of thunderstorms in the afternoon. SUNDAY NIGHT South winds 10 to 15 knots, becoming west 5 to 10 knots after midnight. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: East 4 feet at 9 seconds. Intracoastal waters a moderate chop. A slight chance of thunderstorms in the evening. A chance of showers. MONDAY North winds 15 to 20 knots. Seas 3 to 4 feet, occasionally to 5 feet, building to 4 to 6 feet, occasionally to 8 feet in the afternoon. Wave Detail: East 4 feet at 9 seconds, becoming northeast 4 feet at 5 seconds and east 4 feet at 9 seconds. Intracoastal waters choppy. A chance of showers in the morning, then showers likely with a slight chance of thunderstorms in the afternoon. MONDAY NIGHT Northeast winds 15 to 20 knots, increasing to 20 to 25 knots after midnight. Seas 4 to 6 feet, occasionally to 8 feet. Intracoastal waters rough. A chance of showers with a slight chance of thunderstorms. TUESDAY Northeast winds 25 to 30 knots. Seas 5 to 7 feet, occasionally to 9 feet, building to 8 to 11 feet, occasionally to 14 feet. Intracoastal waters very rough. A chance of showers through the day. A slight chance of thunderstorms in the afternoon, then a slight chance of showers in the evening. A chance of showers after midnight. WEDNESDAY Northeast winds 25 to 30 knots. Seas 8 to 11 feet, occasionally to 14 feet, building to 10 to 14 feet, occasionally to 18 feet. Intracoastal waters very rough. A chance of showers in the morning, then showers likely with a slight chance of thunderstorms in the afternoon. A chance of showers through the night. Winds and waves higher in and near thunderstorms. $$
AMZ450-452-454-042100- Coastal waters from Altamaha Sound to Fernandina Beach FL out 20 NM- Coastal waters from Fernandina Beach to St. Augustine FL out 20 NM- Coastal waters from St. Augustine to Flagler Beach FL out 20 NM- 225 AM EDT Sat Apr 4 2026 REST OF TONIGHT Southeast winds 5 to 10 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at 8 seconds. Intracoastal waters light chop. SATURDAY Southeast winds 5 to 10 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at 8 seconds. Intracoastal waters light chop. SATURDAY NIGHT South winds 5 to 10 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at 8 seconds. Intracoastal waters light chop. SUNDAY South winds 5 to 10 knots, becoming southeast 10 to 15 knots in the afternoon. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: East 4 feet at 9 seconds. Intracoastal waters a moderate chop. A chance of showers with a slight chance of thunderstorms in the afternoon. SUNDAY NIGHT South winds 10 to 15 knots, becoming west 5 to 10 knots after midnight. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: East 4 feet at 9 seconds. Intracoastal waters a moderate chop. A slight chance of thunderstorms in the evening. A chance of showers. MONDAY North winds 15 to 20 knots. Seas 3 to 4 feet, occasionally to 5 feet, building to 4 to 6 feet, occasionally to 8 feet in the afternoon. Wave Detail: East 4 feet at 9 seconds, becoming northeast 4 feet at 5 seconds and east 4 feet at 9 seconds. Intracoastal waters choppy. A chance of showers in the morning, then showers likely with a slight chance of thunderstorms in the afternoon. MONDAY NIGHT Northeast winds 15 to 20 knots, increasing to 20 to 25 knots after midnight. Seas 4 to 6 feet, occasionally to 8 feet. Intracoastal waters rough. A chance of showers with a slight chance of thunderstorms. TUESDAY Northeast winds 25 to 30 knots. Seas 5 to 7 feet, occasionally to 9 feet, building to 8 to 11 feet, occasionally to 14 feet. Intracoastal waters very rough. A chance of showers through the day. A slight chance of thunderstorms in the afternoon, then a slight chance of showers in the evening. A chance of showers after midnight. WEDNESDAY Northeast winds 25 to 30 knots. Seas 8 to 11 feet, occasionally to 14 feet, building to 10 to 14 feet, occasionally to 18 feet. Intracoastal waters very rough. A chance of showers in the morning, then showers likely with a slight chance of thunderstorms in the afternoon. A chance of showers through the night. Winds and waves higher in and near thunderstorms. $$