AMZ400-220115-
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-
507 AM EST Wed Jan 21 2026
.SYNOPSIS...
High pressure centered along the Mid-Atlantic coast will push
offshore today, with this feature extending its axis southwestward
along the southeastern seaboard through Friday. Breezy northeasterly
winds will gradually diminish this evening, with light northerly
winds then prevailing through Friday. 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 southward across our waters on Friday night and
Saturday, with a surge of northeasterly winds expected to briefly
overspread our local waters from north to south early this
weekend. Scattered showers may accompany this frontal passage,
with a wave of low pressure then developing along this boundary
near our region by Saturday night and Sunday. This storm system's
warm front will lift northeastward across our local waters,
resulting in winds shifting to southwesterly, with chances for
showers and a few embedded thunderstorms increasing by late in the
weekend. Another cold front will cross our local waters by Sunday
night and Monday, with strengthening north-northwesterly 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 20, 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.
76 nautical miles east southeast of St Simons Island.
This data derived from NCEP Global RTOFS model.
$$
AMZ470-472-474-220115- Waters from Altamaha Sound GA to Fernandina Beach FL from 20 to 60 NM- Waters from Fernandina Beach to St. Augustine FL from 20 to 60 NM- Waters from St. Augustine to Flagler Beach FL from 20 to 60 NM- 507 AM EST Wed Jan 21 2026 TODAY Northeast winds 10 to 15 knots, diminishing to 5 to 10 knots this afternoon. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: Northeast 3 feet at 5 seconds and east 3 feet at 9 seconds. TONIGHT Northeast winds 5 to 10 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at 10 seconds and northeast 2 feet at 5 seconds. THURSDAY Northeast winds around 10 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: East 5 feet at 10 seconds and northeast 2 feet at 5 seconds. THURSDAY NIGHT East winds 5 to 10 knots. Seas 4 to 5 feet, occasionally to 6 feet. Wave Detail: East 5 feet at 10 seconds. FRIDAY Northeast winds 5 to 10 knots. Seas 4 to 5 feet, occasionally to 6 feet. Wave Detail: East 4 feet at 10 seconds. FRIDAY NIGHT Northeast winds increasing to around 15 knots. Seas 4 to 5 feet, occasionally to 6 feet. Wave Detail: East 5 feet at 10 seconds. A slight chance of showers. SATURDAY Northeast winds around 15 knots. Seas 5 to 6 feet, occasionally to 8 feet. A chance of showers. SATURDAY NIGHT East winds around 15 knots, becoming southwest 10 to 15 knots after midnight. Seas 6 to 7 feet, occasionally to 9 feet. A chance of showers. SUNDAY Southwest winds around 15 knots, becoming west during the afternoon. Seas 6 to 8 feet, occasionally to 10 feet. A chance of showers with a slight chance of thunderstorms. Winds and seas higher in and near thunderstorms. $$
AMZ470-472-474-220115- Waters from Altamaha Sound GA to Fernandina Beach FL from 20 to 60 NM- Waters from Fernandina Beach to St. Augustine FL from 20 to 60 NM- Waters from St. Augustine to Flagler Beach FL from 20 to 60 NM- 507 AM EST Wed Jan 21 2026 TODAY Northeast winds 10 to 15 knots, diminishing to 5 to 10 knots this afternoon. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: Northeast 3 feet at 5 seconds and east 3 feet at 9 seconds. TONIGHT Northeast winds 5 to 10 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at 10 seconds and northeast 2 feet at 5 seconds. THURSDAY Northeast winds around 10 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: East 5 feet at 10 seconds and northeast 2 feet at 5 seconds. THURSDAY NIGHT East winds 5 to 10 knots. Seas 4 to 5 feet, occasionally to 6 feet. Wave Detail: East 5 feet at 10 seconds. FRIDAY Northeast winds 5 to 10 knots. Seas 4 to 5 feet, occasionally to 6 feet. Wave Detail: East 4 feet at 10 seconds. FRIDAY NIGHT Northeast winds increasing to around 15 knots. Seas 4 to 5 feet, occasionally to 6 feet. Wave Detail: East 5 feet at 10 seconds. A slight chance of showers. SATURDAY Northeast winds around 15 knots. Seas 5 to 6 feet, occasionally to 8 feet. A chance of showers. SATURDAY NIGHT East winds around 15 knots, becoming southwest 10 to 15 knots after midnight. Seas 6 to 7 feet, occasionally to 9 feet. A chance of showers. SUNDAY Southwest winds around 15 knots, becoming west during the afternoon. Seas 6 to 8 feet, occasionally to 10 feet. A chance of showers with a slight chance of thunderstorms. Winds and seas higher in and near thunderstorms. $$