AMZ400-010515-
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-
1014 AM EDT Fri Jul 31 2026
.SYNOPSIS...
A frontal boundary will remain nearly stationary just north of the
Georgia waters through Saturday, while high pressure remains
situated over the southeastern Gulf. This weather pattern will
create a prevailing offshore wind flow, with the afternoon sea
breeze shifting winds to onshore across the near shore waters
before shifting to southerly this evening and then back to
southwesterly overnight. Showers and thunderstorms will push
offshore late this afternoon and evening, with a few stronger
storms possible. Coverage of mainly afternoon and evening
thunderstorms will increase this weekend and early next week ahead
of a cold front that will be entering the southeastern states.
Southwesterly winds will strengthen ahead of this boundary
beginning on Saturday night, with periods of Caution level wind
speeds possible through Monday. Strong storms will again be
possible each afternoon and evening through Tuesday. The frontal
boundary will then stall and weaken to the northwest of our local
waters towards midweek, with Atlantic high pressure then building
westward across the southeastern states late next week, creating a
prevailing onshore wind flow.
.GULF STREAM...
The approximate location of the west wall of the Gulf Stream as of
Jul 30, 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.
68 nautical miles east southeast of St Simons Island.
This data derived from NCEP Global RTOFS model.
$$
AMZ450-452-454-010515- 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- 1014 AM EDT Fri Jul 31 2026 REST OF TODAY Wes southwest winds around 10 knots, becoming east southeast around 15 knots late this afternoon. Seas around 2 feet. Intracoastal waters becoming a moderate chop. A chance of showers and thunderstorms late this afternoon. TONIGHT South winds around 15 knots, becoming southwest 5 to 10 knots after midnight. Seas around 2 feet. Wave Detail: South 2 feet at 3 seconds. Intracoastal waters becoming mostly smooth. A chance of showers and thunderstorms during the evening. SATURDAY West southwest winds around 10 knots, becoming southeast around 15 knots late in the afternoon. Seas around 2 feet. Wave Detail: South 2 feet at 3 seconds. Intracoastal waters becoming a moderate chop. A slight chance of showers and thunderstorms in the morning, then showers and thunderstorms likely in the afternoon. SATURDAY NIGHT Southwest winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: South 3 feet at 5 seconds. Intracoastal waters a light chop. Showers and thunderstorms likely in the evening, then a chance of showers and thunderstorms after midnight. SUNDAY Southwest winds 10 to 15 knots, becoming south southeast 15 to 20 knots in the afternoon. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: South 3 feet at 5 seconds and east 2 feet at 8 seconds. Intracoastal waters becoming choppy. A chance of showers and thunderstorms in the morning, then showers and thunderstorms likely in the afternoon. SUNDAY NIGHT Southwest winds 15 to 20 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: South 4 feet at 5 seconds and southeast 3 feet at 8 seconds. Intracoastal waters choppy. A chance of showers and thunderstorms. MONDAY South southwest winds 10 to 15 knots. Seas 2 to 4 feet, occasionally to 5 feet. Intracoastal waters a light chop. A chance of showers and thunderstorms in the morning, then showers and thunderstorms likely in the afternoon. MONDAY NIGHT AND TUESDAY South winds 10 to 15 knots, becoming southeast during the afternoon. Seas 2 to 3 feet. Intracoastal waters a light chop. A chance of showers and thunderstorms. Winds and waves higher in and near thunderstorms. $$
AMZ450-452-454-010515- 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- 1014 AM EDT Fri Jul 31 2026 REST OF TODAY Wes southwest winds around 10 knots, becoming east southeast around 15 knots late this afternoon. Seas around 2 feet. Intracoastal waters becoming a moderate chop. A chance of showers and thunderstorms late this afternoon. TONIGHT South winds around 15 knots, becoming southwest 5 to 10 knots after midnight. Seas around 2 feet. Wave Detail: South 2 feet at 3 seconds. Intracoastal waters becoming mostly smooth. A chance of showers and thunderstorms during the evening. SATURDAY West southwest winds around 10 knots, becoming southeast around 15 knots late in the afternoon. Seas around 2 feet. Wave Detail: South 2 feet at 3 seconds. Intracoastal waters becoming a moderate chop. A slight chance of showers and thunderstorms in the morning, then showers and thunderstorms likely in the afternoon. SATURDAY NIGHT Southwest winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: South 3 feet at 5 seconds. Intracoastal waters a light chop. Showers and thunderstorms likely in the evening, then a chance of showers and thunderstorms after midnight. SUNDAY Southwest winds 10 to 15 knots, becoming south southeast 15 to 20 knots in the afternoon. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: South 3 feet at 5 seconds and east 2 feet at 8 seconds. Intracoastal waters becoming choppy. A chance of showers and thunderstorms in the morning, then showers and thunderstorms likely in the afternoon. SUNDAY NIGHT Southwest winds 15 to 20 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: South 4 feet at 5 seconds and southeast 3 feet at 8 seconds. Intracoastal waters choppy. A chance of showers and thunderstorms. MONDAY South southwest winds 10 to 15 knots. Seas 2 to 4 feet, occasionally to 5 feet. Intracoastal waters a light chop. A chance of showers and thunderstorms in the morning, then showers and thunderstorms likely in the afternoon. MONDAY NIGHT AND TUESDAY South winds 10 to 15 knots, becoming southeast during the afternoon. Seas 2 to 3 feet. Intracoastal waters a light chop. A chance of showers and thunderstorms. Winds and waves higher in and near thunderstorms. $$