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.
 
 
 $$




 
 AMZ470-472-474-190800-
 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-
 134 PM EDT Sat Apr 18 2026
 

 REST OF TODAY
 South winds 5 to 10 knots, increasing to 10 to
 15 knots this afternoon. Seas around 3 feet. Wave Detail: East
 3 feet at 8 seconds.

 TONIGHT
 South winds 10 to 15 knots, becoming southwest after
 midnight. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail:
 Southeast 3 feet at 4 seconds and east 3 feet at 8 seconds.

 SUNDAY
 West winds 5 to 10 knots, becoming northwest 10 to
 15 knots in the afternoon. Seas 2 to 3 feet. Wave Detail:
 Southeast 3 feet at 8 seconds and southwest 2 feet at 4 seconds.
 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 4 to 6 feet, occasionally to
 8 feet, building to 5 to 8 feet, occasionally to 10 feet after
 midnight. Wave Detail: Northeast 5 feet at 8 seconds and north
 2 feet at 4 seconds, becoming north 8 feet at 6 seconds. A slight
 chance of thunderstorms in the evening. A slight chance of
 showers.

 MONDAY AND MONDAY NIGHT
 Northeast winds 20 to 25 knots. Seas
 5 to 7 feet, occasionally to 9 feet. Wave Detail: Northeast
 7 feet at 7 seconds.

 TUESDAY THROUGH WEDNESDAY
 Southeast winds 10 to 15 knots. Seas
 3 to 5 feet, occasionally to 6 feet. Wave Detail: Northeast
 5 feet at 8 seconds.
 
 Winds and seas higher in and near thunderstorms.
 
 $$