AMZ400-220330-
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-
820 AM EDT Tue Apr 21 2026
.SYNOPSIS...
Winds and waves subside gradually tonight with exercise caution over
the offshore Florida waters through late morning as high pressure
builds across the area waters today. Easterly winds Today will
return Wednesday as high pressure remains over the waters with
southerly winds overnight due to the land breeze. Winds will turn
more southeasterly Thursday into Friday during the daytime's
seabreeze circulation with southerly winds prevailing ahead of a
cold front Saturday and southwesterly on Sunday as the front begins
to stall just north of the waters. The front will bring increasing
chances for showers and thunderstorms over the waters this weekend.
.GULF STREAM...
The approximate location of the west wall of the Gulf Stream as of
Apr 20, 2026 at 0000 UTC...
54 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.
$$
AMZ450-452-454-220330- Coastal waters from Altamaha Sound to Fernandina Beach FL out 20 NM- Coastal waters from Fernandina Beach to St. Augustine FL out 20 NM- Coastal waters from St. Augustine to Flagler Beach FL out 20 NM- 820 AM EDT Tue Apr 21 2026 REST OF TODAY North winds 5 to 10 knots, becoming east this afternoon. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: East 4 feet at 8 seconds. Intracoastal waters light chop. TONIGHT East winds 5 to 10 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at 8 seconds. Intracoastal waters light chop. WEDNESDAY Northeast winds around 5 knots, becoming east in the afternoon. Seas 2 to 3 feet. Wave Detail: East 3 feet at 8 seconds. Intracoastal waters light chop. WEDNESDAY NIGHT South winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: East 3 feet at 8 seconds. Intracoastal waters light chop. THURSDAY South winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: East 3 feet at 7 seconds. Intracoastal waters light chop. THURSDAY NIGHT South winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: East 3 feet at 7 seconds and southeast 2 feet at 3 seconds. Intracoastal waters light chop. FRIDAY South winds 10 to 15 knots. Seas 2 to 3 feet. Intracoastal waters a moderate chop. SATURDAY South winds 10 to 15 knots. Seas 2 to 3 feet. Intracoastal waters a moderate chop. A slight chance of showers and thunderstorms in the afternoon. A chance of showers in the evening, then a slight chance of showers after midnight. Winds and waves higher in and near thunderstorms. $$
AMZ450-452-454-220330- 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- 820 AM EDT Tue Apr 21 2026 REST OF TODAY North winds 5 to 10 knots, becoming east this afternoon. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: East 4 feet at 8 seconds. Intracoastal waters light chop. TONIGHT East winds 5 to 10 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at 8 seconds. Intracoastal waters light chop. WEDNESDAY Northeast winds around 5 knots, becoming east in the afternoon. Seas 2 to 3 feet. Wave Detail: East 3 feet at 8 seconds. Intracoastal waters light chop. WEDNESDAY NIGHT South winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: East 3 feet at 8 seconds. Intracoastal waters light chop. THURSDAY South winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: East 3 feet at 7 seconds. Intracoastal waters light chop. THURSDAY NIGHT South winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: East 3 feet at 7 seconds and southeast 2 feet at 3 seconds. Intracoastal waters light chop. FRIDAY South winds 10 to 15 knots. Seas 2 to 3 feet. Intracoastal waters a moderate chop. SATURDAY South winds 10 to 15 knots. Seas 2 to 3 feet. Intracoastal waters a moderate chop. A slight chance of showers and thunderstorms in the afternoon. A chance of showers in the evening, then a slight chance of showers after midnight. Winds and waves higher in and near thunderstorms. $$