AMZ400-140145-
 Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-
 543 AM EST Sat Dec 13 2025
 
 
 .SYNOPSIS...
 
 High pressure centered over our local waters this morning will
 shift eastward this afternoon ahead of an Arctic cold front that
 will enter the southeastern states tonight. This strong cold front
 will cross our area from the northwest on Sunday, with only a few
 showers possible on Sunday night and Monday morning, mainly
 offshore. North-northwesterly winds will strengthen in the wake
 of this frontal passage on Sunday afternoon and will shift to
 north northeasterly on Sunday night. Small Craft Advisories will
 likely be issued for Sunday afternoon, with Gale Warnings also
 likely throughout our local waters on Sunday Night and Monday
 morning as winds shift to northeasterly as Arctic high pressure
 wedges down the southeastern seaboard. This high pressure center
 will gradually weaken over the southeastern states early next
 week as coastal troughing develops over our local waters. Onshore
 winds and seas will then gradually subside from Monday afternoon
 through Tuesday. Coastal troughing may generate a few showers
 early next week, mainly offshore. High pressure will then shift
 eastward and off the southeastern seaboard by midweek, with a
 weaker frontal boundary likely approaching our local waters late
 next week.
 
 
 .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.
 
 $$




 
 AMZ470-472-474-140145-
 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-
 543 AM EST Sat Dec 13 2025
 

 TODAY
 West southwest winds around 5 knots, becoming south
 this afternoon. Seas around 2 feet. Wave Detail: East 2 feet at 8
 seconds.

 TONIGHT
 South southwest winds 5 to 10 knots, becoming west 10
 to 15 knots after midnight. Seas around 2 feet. Wave Detail:
 Southwest 2 feet at 3 seconds and east 2 feet at 8 seconds.

 SUNDAY
 West winds 10 to 15 knots, becoming north northwest 20
 to 25 knots in the afternoon. Seas 2 to 3 feet, building to 3 to 5
 feet, occasionally to 6 feet in the afternoon. Wave Detail:
 West 2 feet at 3 seconds and southeast 2 feet at 8 seconds,
 becoming northwest 4 feet at 4 seconds and southeast 2 feet at
 8 seconds.

 SUNDAY NIGHT
 North winds 25 to 30 knots, becoming north
 northeast after midnight. Frequent gusts to Gale Force likely.
 Seas 5 to 8 feet, occasionally to 10 feet, building to 7 to 10
 feet, occasionally to 13 feet after midnight. Wave Detail:
 North 8 feet at 6 seconds and east 7 feet at 9 seconds, becoming
 north 10 feet at 7 seconds. A slight chance of showers after
 midnight.

 MONDAY
 Northeast winds 25 to 30 knots, diminishing to around
 20 knots in the afternoon. Seas 7 to 10 feet, occasionally to 13
 feet. Wave Detail: Northeast 10 feet at 9 seconds. A chance of
 showers, mainly in the morning.

 MONDAY NIGHT
 Northeast winds around 15 knots, diminishing to
 around 10 knots after midnight. Seas 5 to 8 feet, occasionally to
 10 feet. Wave Detail: Northeast 8 feet at 9 seconds. A slight
 chance of showers in the evening.

 TUESDAY
 North northeast winds around 10 knots. Seas 4 to 6
 feet, occasionally to 8 feet.

 TUESDAY NIGHT AND WEDNESDAY
 East northeast winds 5 to 10
 knots, becoming southeast after midnight. Seas 3 to 4 feet,
 occasionally to 5 feet.
 
 $$