AMZ400-132000-
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-
1229 AM EST Sat Dec 13 2025
.SYNOPSIS...
High pressure ridge hold over area waters through this evening
before breaking down tonight ahead of an approaching cold front. The
front will cross through the area on Sunday, bringing only very
isolated shower chances Sunday. Northwesterly winds will strengthen
in the wake of this frontal passage on Sunday and Sunday Night
afternoon: Small Craft Advisories are very likely, with Gale
Warnings also possible Sunday Night as winds shift to northerly and
then northeasterly due to strong high pressure wedging down the
southeastern seaboard. High pressure will then gradually weaken over
the southeastern states early next week as coastal troughing
develops over our local waters. Small Craft Advisories and/or Gale
Warnings will likely continue through Monday morning, with onshore
winds and seas then gradually subsiding from Monday afternoon
through Tuesday. Coastal troughing may generate a few showers early
next week, mainly for the offshore waters. High pressure will then
shift eastward and off the southeastern seaboard by midweek.
.GULF STREAM...
The approximate location of the west wall of the Gulf Stream as of
Dec 06, 2025 at 1200 UTC...
71 nautical miles east of Flagler Beach.
74 nautical miles east of Saint Augustine Beach.
85 nautical miles east southeast of Jacksonville Beach.
97 nautical miles east southeast of St Simons Island.
This data courtesy of the Naval Oceanographic Office.
$$
AMZ450-452-454-132000-
Coastal waters from Altamaha Sound to Fernandina Beach FL out
20 NM-
Coastal waters from Fernandina Beach to St. Augustine FL out
20 NM-
Coastal waters from St. Augustine to Flagler Beach FL out 20 NM-
1229 AM EST Sat Dec 13 2025
REST OF TONIGHT
Southwest winds around 5 knots. Seas around
2 feet. Intracoastal waters smooth.
SATURDAY
West winds around 5 knots, becoming east in the
afternoon. Seas around 2 feet in the morning, then 1 foot or
less. Intracoastal waters smooth.
SATURDAY NIGHT
South winds around 5 knots, becoming west after
midnight. Waves 1 foot or less, then around 2 feet after
midnight. Intracoastal waters light chop.
SUNDAY
West winds 5 to 10 knots, becoming northwest 20 to
25 knots in the afternoon. Seas 2 to 4 feet, occasionally to
5 feet. Wave Detail: Northwest 3 feet at 4 seconds. Intracoastal
waters rough.
SUNDAY NIGHT AND MONDAY
Northeast winds 30 to 35 knots. Seas
6 to 9 feet, occasionally to 11 feet. Wave Detail: North 9 feet
at 7 seconds. Intracoastal waters extremely rough.
MONDAY NIGHT
North winds 10 to 15 knots. Seas 5 to 7 feet,
occasionally to 9 feet. Wave Detail: Northeast 7 feet at
9 seconds. Intracoastal waters a moderate chop.
TUESDAY
North winds 10 to 15 knots, becoming northeast 5 to
10 knots. Seas 3 to 5 feet, occasionally to 6 feet. Intracoastal
waters a moderate chop.
WEDNESDAY
Northeast winds 5 to 10 knots, becoming southeast.
Seas 2 to 3 feet. Intracoastal waters light chop.
$$
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