AMZ400-220930-
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-
128 PM EST Wed Jan 21 2026
.SYNOPSIS...
High pressure ridge centered along the Mid-Atlantic coast will push
offshore today, with this feature extending its axis southwest along
the southeastern seaboard through Friday. Breezy northeasterly winds
will gradually diminish by this evening. A developing winter storm
system over the central and southern United States late this week
and Arctic high pressure building to the north of our region will
drive a cold front south across our waters on Friday night and
Saturday, with a surge of northeast winds expected to overspread our
local waters from north to south early this weekend. A wave of low
pressure then develops along this boundary near our region by
Saturday night and Sunday. This storm system's warm front will lift
northeast across our local waters on Sunday. Another cold front will
cross our local waters by Sunday night and Monday, with
strengthening north winds forecast in the wake of this frontal
passage early next week.
.GULF STREAM...
The approximate location of the west wall of the Gulf Stream as of
Jan 21, 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.
71 nautical miles east southeast of St Simons Island.
This data derived from NCEP Global RTOFS model.
$$
AMZ450-452-454-220930- Coastal waters from Altamaha Sound to Fernandina Beach FL out 20 NM- Coastal waters from Fernandina Beach to St. Augustine FL out 20 NM- Coastal waters from St. Augustine to Flagler Beach FL out 20 NM- 128 PM EST Wed Jan 21 2026 REST OF TODAY Northeast winds 10 to 15 knots...decreasing to 5 to 10 knots. Seas around 3 feet. Wave Detail: Northeast 2 feet at 4 seconds and east 2 feet at 9 seconds. Intracoastal waters light chop. TONIGHT Northeast winds 5 to 10 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: East 3 feet at 10 seconds and northeast 2 feet at 5 seconds. Intracoastal waters light chop. THURSDAY Northeast winds 5 to 10 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at 10 seconds and northeast 2 feet at 5 seconds. Intracoastal waters light chop. THURSDAY NIGHT Northeast winds 5 to 10 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at 10 seconds. Intracoastal waters light chop. FRIDAY Northeast winds 5 to 10 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at 10 seconds. Intracoastal waters light chop. FRIDAY NIGHT Northeast winds 5 to 10 knots, increasing to 15 to 20 knots after midnight. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at 10 seconds and northeast 3 feet at 4 seconds. Intracoastal waters choppy. A slight chance of showers after midnight. SATURDAY Northeast winds 15 to 20 knots. Seas 4 to 6 feet, occasionally to 8 feet. Intracoastal waters choppy. A slight chance of showers in the morning, then a chance of showers in the afternoon. A slight chance of showers through the night. SUNDAY Southwest winds 15 to 20 knots, becoming west 20 to 25 knots. Seas 4 to 6 feet, occasionally to 8 feet. Intracoastal waters rough. A slight chance of showers in the morning, then a chance of showers in the afternoon. Showers likely through the night. $$
AMZ450-452-454-220930- 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- 128 PM EST Wed Jan 21 2026 REST OF TODAY Northeast winds 10 to 15 knots...decreasing to 5 to 10 knots. Seas around 3 feet. Wave Detail: Northeast 2 feet at 4 seconds and east 2 feet at 9 seconds. Intracoastal waters light chop. TONIGHT Northeast winds 5 to 10 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: East 3 feet at 10 seconds and northeast 2 feet at 5 seconds. Intracoastal waters light chop. THURSDAY Northeast winds 5 to 10 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at 10 seconds and northeast 2 feet at 5 seconds. Intracoastal waters light chop. THURSDAY NIGHT Northeast winds 5 to 10 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at 10 seconds. Intracoastal waters light chop. FRIDAY Northeast winds 5 to 10 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at 10 seconds. Intracoastal waters light chop. FRIDAY NIGHT Northeast winds 5 to 10 knots, increasing to 15 to 20 knots after midnight. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at 10 seconds and northeast 3 feet at 4 seconds. Intracoastal waters choppy. A slight chance of showers after midnight. SATURDAY Northeast winds 15 to 20 knots. Seas 4 to 6 feet, occasionally to 8 feet. Intracoastal waters choppy. A slight chance of showers in the morning, then a chance of showers in the afternoon. A slight chance of showers through the night. SUNDAY Southwest winds 15 to 20 knots, becoming west 20 to 25 knots. Seas 4 to 6 feet, occasionally to 8 feet. Intracoastal waters rough. A slight chance of showers in the morning, then a chance of showers in the afternoon. Showers likely through the night. $$