AMZ400-190645-
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-
1142 AM EDT Mon May 18 2026
.SYNOPSIS...
Atlantic high pressure centered to Bermuda will continue to extend
its axis across the southeastern states through midweek. An
easterly wind surge late this afternoon through this evening will
result in Caution level wind speeds for the northeast Florida
waters. Prevailing east to southeasterly winds will continue
across our local waters during the next several days, with
isolated to widely scattered showers and perhaps a few isolated
thunderstorms possible, mainly during the overnight and early
morning hours. A frontal boundary will briefly stall over the
southeastern states late this week before lifting northward as a
warm front during the Holiday weekend. Caution conditions will
again be possible for the near shore waters from Friday through
early next week as Atlantic high pressure becomes reinforced near
Bermuda.
.GULF STREAM...
The approximate location of the west wall of the Gulf Stream as of
May 17, 2026 at 0000 UTC...
54 nautical miles east of Flagler Beach.
58 nautical miles east of Saint Augustine Beach.
70 nautical miles east southeast of Jacksonville Beach.
80 nautical miles east southeast of St Simons Island.
This data derived from NCEP Global RTOFS model.
$$
AMZ452-454-472-474-190645- Coastal waters from Fernandina Beach to St. Augustine FL out 20 NM- Coastal waters from St. Augustine to Flagler Beach FL out 20 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- 1142 AM EDT Mon May 18 2026 SMALL CRAFT EXERCISE CAUTION IN EFFECT THROUGH THIS EVENING REST OF TODAY East winds 10 to 15 knots, increasing to 15 to 20 knots late this afternoon. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at 7 seconds. Intracoastal waters becoming choppy. TONIGHT East winds 15 to 20 knots, diminishing to 10 to 15 knots after midnight. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: East 4 feet at 7 seconds. Intracoastal waters becoming a light chop. TUESDAY East winds 10 to 15 knots, increasing to around 15 knots late in the afternoon. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at 7 seconds. Intracoastal waters becoming a moderate chop. A slight chance of showers in the morning. TUESDAY NIGHT East winds around 15 knots, becoming southeast 5 to 10 knots after midnight. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at 8 seconds. Intracoastal waters becoming mostly smooth. A slight chance of showers after midnight. WEDNESDAY East southeast winds 5 to 10 knots, becoming east and increasing to 10 to 15 knots during the afternoon. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 3 feet at 8 seconds. Intracoastal waters light chop. WEDNESDAY NIGHT East southeast winds 10 to 15 knots, becoming southeast 5 to 10 knots after midnight. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 3 feet at 8 seconds. Intracoastal waters becoming mostly smooth. THURSDAY Southeast winds 5 to 10 knots, becoming east southeast and increasing to around 15 knots late in the afternoon. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: Southeast 4 feet at 9 seconds. Intracoastal waters becoming a moderate chop. THURSDAY NIGHT East southeast winds around 15 knots, becoming southeast 5 to 10 knots after midnight. FRIDAY Southeast winds around 10 knots, becoming east southeast and increasing to 15 to 20 knots late in the afternoon. Seas 3 to 4 feet, occasionally to 5 feet. Intracoastal waters becoming choppy. Winds and waves higher in and near thunderstorms. $$
AMZ452-454-472-474-190645- Coastal waters from Fernandina Beach to St. Augustine FL out 20 NM- Coastal waters from St. Augustine to Flagler Beach FL out 20 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- 1142 AM EDT Mon May 18 2026 SMALL CRAFT EXERCISE CAUTION IN EFFECT THROUGH THIS EVENING REST OF TODAY East winds 10 to 15 knots, increasing to 15 to 20 knots late this afternoon. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at 7 seconds. Intracoastal waters becoming choppy. TONIGHT East winds 15 to 20 knots, diminishing to 10 to 15 knots after midnight. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: East 4 feet at 7 seconds. Intracoastal waters becoming a light chop. TUESDAY East winds 10 to 15 knots, increasing to around 15 knots late in the afternoon. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at 7 seconds. Intracoastal waters becoming a moderate chop. A slight chance of showers in the morning. TUESDAY NIGHT East winds around 15 knots, becoming southeast 5 to 10 knots after midnight. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at 8 seconds. Intracoastal waters becoming mostly smooth. A slight chance of showers after midnight. WEDNESDAY East southeast winds 5 to 10 knots, becoming east and increasing to 10 to 15 knots during the afternoon. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 3 feet at 8 seconds. Intracoastal waters light chop. WEDNESDAY NIGHT East southeast winds 10 to 15 knots, becoming southeast 5 to 10 knots after midnight. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 3 feet at 8 seconds. Intracoastal waters becoming mostly smooth. THURSDAY Southeast winds 5 to 10 knots, becoming east southeast and increasing to around 15 knots late in the afternoon. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: Southeast 4 feet at 9 seconds. Intracoastal waters becoming a moderate chop. THURSDAY NIGHT East southeast winds around 15 knots, becoming southeast 5 to 10 knots after midnight. FRIDAY Southeast winds around 10 knots, becoming east southeast and increasing to 15 to 20 knots late in the afternoon. Seas 3 to 4 feet, occasionally to 5 feet. Intracoastal waters becoming choppy. Winds and waves higher in and near thunderstorms. $$