AMZ400-192100-
 Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-
 226 AM EDT Sat Sep 19 2026
 
 
 .SYNOPSIS...
 
 A surface trough and disturbance aloft moving slowly westward across
 the Florida peninsula this morning will emerge over the southeast
 Gulf this afternoon. Widely scattered showers and possibly a few
 thunderstorms should remain confined to the waters from around St.
 Augustine southward today, with coverage then slowly increasing
 throughout our local waters after midnight on Saturday night and
 Sunday. Scattered to numerous showers and thunderstorms are then
 expected early next week as the disturbance aloft moves slowly r
 northeastward across our area. East to northeasterly winds will
 otherwise prevail through the early portions of next week, with
 speeds and seas remaining below Caution levels. Strong high pressure
 building over southeastern Canada and New England towards the middle
 portion of next week will then wedge down the southeastern seaboard,
 resulting in surge of northeasterly winds that will likely bring
 Small Craft Advisory conditions to our local waters beginning later
 on Wednesday and continuing through the late portions of next week.
 
 
 .GULF STREAM...
 
 The approximate location of the west wall of the Gulf Stream as of
 Sep 18, 2026 at 0000 UTC...
 
 50 nautical miles east of Flagler Beach.
 58 nautical miles east of Saint Augustine Beach.
 70 nautical miles east southeast of Jacksonville Beach.
 71 nautical miles east southeast of St Simons Island.
 
 This data derived from NCEP Global RTOFS model.
 
 
 $$




 
 AMZ450-452-454-192100-
 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-
 226 AM EDT Sat Sep 19 2026
 

 REST OF TONIGHT
 East winds 5 to 10 knots. Seas 2 to 3 feet.
 Wave Detail: East 3 feet at 7 seconds. Intracoastal waters light
 chop.

 SATURDAY
 Northeast winds 5 to 10 knots, becoming east 10 to
 15 knots in the afternoon. Seas 2 to 3 feet. Wave Detail: East
 2 feet at 7 seconds. Intracoastal waters a moderate chop. A
 slight chance of showers and thunderstorms in the morning.

 SATURDAY NIGHT
 East winds 5 to 10 knots. Seas 2 to 3 feet.
 Wave Detail: East 2 feet at 7 seconds. Intracoastal waters light
 chop. A slight chance of showers and thunderstorms after
 midnight.

 SUNDAY
 Northeast winds 5 to 10 knots. Seas around 2 feet. Wave
 Detail: East 2 feet at 7 seconds and east 2 feet at 11 seconds.
 Intracoastal waters light chop. A slight chance of showers and
 thunderstorms.

 SUNDAY NIGHT
 East winds 5 to 10 knots, diminishing to around
 5 knots after midnight. Seas around 2 feet. Wave Detail: East
 2 feet at 8 seconds and east 2 feet at 11 seconds. Intracoastal
 waters light chop. A slight chance of thunderstorms. A chance of
 showers, mainly in the evening.

 MONDAY AND MONDAY NIGHT
 Southeast winds 5 to 10 knots. Seas
 around 2 feet. Wave Detail: East 2 feet at 8 seconds.
 Intracoastal waters light chop. A chance of showers and
 thunderstorms.

 TUESDAY
 Northeast winds 5 to 10 knots. Seas around 2 feet.
 Intracoastal waters light chop. Showers likely with a slight
 chance of thunderstorms in the morning, then a chance of
 thunderstorms through the night. A chance of showers. A slight
 chance of thunderstorms after midnight.

 WEDNESDAY
 Northeast winds 15 to 20 knots. Seas 3 to 5 feet,
 occasionally to 6 feet. Intracoastal waters choppy. A slight
 chance of thunderstorms in the morning. Showers likely through
 the day. A chance of thunderstorms in the afternoon, then a
 chance of showers with a slight chance of thunderstorms through
 the night.
 
 Winds and waves higher in and near thunderstorms.
 
 $$