AMZ400-200300-
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-
800 AM EDT Wed Aug 19 2026
.SYNOPSIS...
Weak high pressure situated over the northern Gulf will maintain a
northwest to westerly wind flow across our local waters today. The
Atlantic sea breeze will push slowly inland this afternoon, shifting
surface winds to southeasterly this afternoon and then southerly
this evening, with speeds briefly surging around sunset before
diminishing overnight. Meanwhile, a stalled frontal boundary
positioned just north of the Georgia waters will remain in place
during the next several days. Scattered showers and thunderstorms
may impact the near shore waters adjacent to northeast Florida this
afternoon and evening and again on Thursday afternoon and evening.
Coverage of mainly afternoon and evening showers and thunderstorms
will then increase from Friday through the upcoming weekend
throughout our local waters as southwesterly winds prevail, with
afternoon sea breezes developing each day.
.GULF STREAM...
The approximate location of the west wall of the Gulf Stream as of
Aug 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.
66 nautical miles east southeast of St Simons Island.
This data derived from NCEP Global RTOFS model.
$$
AMZ450-452-454-200300- Coastal waters from Altamaha Sound to Fernandina Beach FL out 20 NM- Coastal waters from Fernandina Beach to St. Augustine FL out 20 NM- Coastal waters from St. Augustine to Flagler Beach FL out 20 NM- 800 AM EDT Wed Aug 19 2026 REST OF TODAY West winds 5 to 10 knots, becoming southeast this afternoon. Seas 2 to 3 feet. Wave Detail: Northwest 2 feet at 3 seconds and east 2 feet at 10 seconds. Intracoastal waters light chop. A slight chance of showers and thunderstorms this afternoon. TONIGHT Southwest winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: South 2 feet at 3 seconds and east 2 feet at 9 seconds. Intracoastal waters light chop. THURSDAY Southwest winds around 5 knots, becoming southeast in the afternoon. Seas around 2 feet. Wave Detail: Southeast 2 feet at 3 seconds and east 2 feet at 9 seconds. Intracoastal waters light chop. A slight chance of showers and thunderstorms in the afternoon. THURSDAY NIGHT Southwest winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: South 2 feet at 4 seconds and east 2 feet at 8 seconds. Intracoastal waters light chop. FRIDAY South winds 5 to 10 knots, increasing to 10 to 15 knots in the afternoon. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at 4 seconds. Intracoastal waters a moderate chop. A chance of showers and thunderstorms in the afternoon. FRIDAY NIGHT Southwest winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at 4 seconds. Intracoastal waters a moderate chop. A chance of showers and thunderstorms in the evening. SATURDAY THROUGH SUNDAY Southwest winds 10 to 15 knots. Seas 2 to 3 feet. Intracoastal waters a moderate chop. A chance of showers and thunderstorms. Winds and waves higher in and near thunderstorms. $$
AMZ450-452-454-200300- 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- 800 AM EDT Wed Aug 19 2026 REST OF TODAY West winds 5 to 10 knots, becoming southeast this afternoon. Seas 2 to 3 feet. Wave Detail: Northwest 2 feet at 3 seconds and east 2 feet at 10 seconds. Intracoastal waters light chop. A slight chance of showers and thunderstorms this afternoon. TONIGHT Southwest winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: South 2 feet at 3 seconds and east 2 feet at 9 seconds. Intracoastal waters light chop. THURSDAY Southwest winds around 5 knots, becoming southeast in the afternoon. Seas around 2 feet. Wave Detail: Southeast 2 feet at 3 seconds and east 2 feet at 9 seconds. Intracoastal waters light chop. A slight chance of showers and thunderstorms in the afternoon. THURSDAY NIGHT Southwest winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: South 2 feet at 4 seconds and east 2 feet at 8 seconds. Intracoastal waters light chop. FRIDAY South winds 5 to 10 knots, increasing to 10 to 15 knots in the afternoon. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at 4 seconds. Intracoastal waters a moderate chop. A chance of showers and thunderstorms in the afternoon. FRIDAY NIGHT Southwest winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at 4 seconds. Intracoastal waters a moderate chop. A chance of showers and thunderstorms in the evening. SATURDAY THROUGH SUNDAY Southwest winds 10 to 15 knots. Seas 2 to 3 feet. Intracoastal waters a moderate chop. A chance of showers and thunderstorms. Winds and waves higher in and near thunderstorms. $$