AMZ400-120430-
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-
922 AM EDT Wed Mar 11 2026
.SYNOPSIS...
Surface high pressure will shift further south today causing winds
to gradually increase from the south and southwest and reach exercise
caution levels by late this afternoon and early evening. A cold
front will move into the southeast states tonight and move into
the area waters on Thursday morning and move through Thursday
afternoon with showers and a few stronger thunderstorms. Strong
northwest winds in the wake of this frontal passage will create
Small Craft Advisory conditions throughout our local waters by
late Thursday afternoon, with these conditions continuing on
Thursday night and Friday morning as high pressure briefly builds
over the Mid- Atlantic states. Winds will quickly shift to north
on Thursday night and then northeast by early Friday before speeds
gradually diminish on Friday afternoon and evening.
.GULF STREAM...
The approximate location of the west wall of the Gulf Stream as of
Mar 10, 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.
68 nautical miles east southeast of St Simons Island.
This data derived from NCEP Global RTOFS model.
$$
AMZ450-452-454-120430-
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-
922 AM EDT Wed Mar 11 2026
SMALL CRAFT EXERCISE CAUTION IN EFFECT FROM 5 PM EDT THIS
AFTERNOON THROUGH LATE TONIGHT
REST OF TODAY
South winds 5 to 10 knots, becoming southeast
15 to 20 knots this afternoon. Seas 2 to 4 feet, occasionally to
5 feet. Wave Detail: Southeast 3 feet at 4 seconds and east
3 feet at 9 seconds. Intracoastal waters choppy.
TONIGHT
South winds 15 to 20 knots, becoming southwest 10 to
15 knots after midnight. Seas 3 to 4 feet, occasionally to
5 feet. Wave Detail: Southeast 4 feet at 5 seconds and east
2 feet at 9 seconds. Intracoastal waters choppy.
THURSDAY
Southwest winds 10 to 15 knots, becoming northwest
15 to 20 knots in the afternoon. Seas 3 to 4 feet, occasionally
to 5 feet. Wave Detail: Southeast 3 feet at 6 seconds and east
3 feet at 9 seconds. Intracoastal waters choppy. A slight chance
of thunderstorms. A chance of showers in the morning, then
showers in the afternoon.
THURSDAY NIGHT
Northeast winds 20 to 25 knots. Seas 4 to
6 feet, occasionally to 8 feet. Wave Detail: Northeast 6 feet at
8 seconds and north 4 feet at 4 seconds. Intracoastal waters
rough. A chance of showers, mainly in the evening.
FRIDAY
Northeast winds 15 to 20 knots, diminishing to around
10 knots in the afternoon. Seas 4 to 6 feet, occasionally to
8 feet. Wave Detail: Northeast 6 feet at 8 seconds. Intracoastal
waters choppy. A slight chance of showers in the morning, then a
chance of showers in the afternoon.
FRIDAY NIGHT
Northeast winds 5 to 10 knots. Seas 3 to 5 feet,
occasionally to 6 feet. Wave Detail: Northeast 5 feet at
8 seconds. Intracoastal waters light chop. A slight chance of
showers in the evening.
SATURDAY
Northeast winds 5 to 10 knots, becoming southeast.
Seas 3 to 4 feet, occasionally to 5 feet. Intracoastal waters
light chop. 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 thunderstorms through the
night. A chance of showers after midnight.
SUNDAY
Southeast winds 10 to 15 knots, becoming south 15 to
20 knots. Seas 3 to 4 feet, occasionally to 5 feet. Intracoastal
waters choppy. A slight chance of thunderstorms in the morning.
Showers likely through the day. A chance of thunderstorms. A
chance of showers through the night.
Winds and waves higher in and near thunderstorms.
$$
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