AMZ400-190800-
 Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-
 134 PM EDT Sat Apr 18 2026
 
 
 .SYNOPSIS...
 
 Surface high pressure ridge over central Florida will push
 further south today as a dry cool front moves into the southeast
 states. Winds will increase from the south and southeast rest of
 today through this evening over the area waters, and then
 shift to the southwest and west by Sunday morning. The front
 will bring a wind shift to the northwest Sunday afternoon into
 Sunday Night, then a surge of northeast winds follows the frontal
 passage through Monday night and Small Craft Advisory with the
 potential for Gale force gusts are expected. High pressure will
 develop over the area Tuesday through Wednesday.
 
 
 .GULF STREAM...
 
 The approximate location of the west wall of the Gulf Stream as of
 Apr 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.
 
 
 $$




 
 AMZ450-452-454-190800-
 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-
 134 PM EDT Sat Apr 18 2026
 

 REST OF TODAY
 Southeast winds 5 to 10 knots, increasing to
 10 to 15 knots this afternoon. Seas 2 to 3 feet. Wave Detail:
 East 3 feet at 8 seconds and southeast 2 feet at 3 seconds.
 Intracoastal waters a moderate chop.

 TONIGHT
 South winds 10 to 15 knots, becoming southwest 5 to
 10 knots after midnight. Seas 2 to 3 feet. Wave Detail: Southeast
 2 feet at 4 seconds and east 2 feet at 8 seconds. Intracoastal
 waters a moderate chop.

 SUNDAY
 West winds 5 to 10 knots, becoming northeast 10 to
 15 knots in the afternoon. Seas 2 to 3 feet. Wave Detail: East
 3 feet at 8 seconds. Intracoastal waters a moderate chop. A
 slight chance of showers in the afternoon.

 SUNDAY NIGHT
 North winds 20 to 25 knots, becoming northeast
 25 to 30 knots after midnight. Seas 3 to 5 feet, occasionally to
 6 feet, building to 5 to 7 feet, occasionally to 9 feet after
 midnight. Wave Detail: Northeast 5 feet at 8 seconds and north
 2 feet at 3 seconds, becoming northeast 7 feet at 6 seconds.
 Intracoastal waters very rough.

 MONDAY
 Northeast winds 25 to 30 knots, diminishing to 20 to
 25 knots in the afternoon. Seas 5 to 8 feet, occasionally to
 10 feet. Wave Detail: Northeast 8 feet at 7 seconds. Intracoastal
 waters very rough.

 MONDAY NIGHT
 East winds 15 to 20 knots, becoming northeast
 10 to 15 knots after midnight. Seas 5 to 7 feet, occasionally to
 9 feet, subsiding to 3 to 5 feet, occasionally to 6 feet after
 midnight. Wave Detail: Northeast 6 feet at 8 seconds, becoming
 east 5 feet at 8 seconds. Intracoastal waters choppy.

 TUESDAY
 Northeast winds 10 to 15 knots, becoming east. Seas
 3 to 5 feet, occasionally to 6 feet. Intracoastal waters a
 moderate chop.

 WEDNESDAY
 East winds 5 to 10 knots, becoming south. Seas 2 to
 3 feet. Intracoastal waters light chop.
 
 $$