AMZ400-092315-
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-
412 AM EDT Thu Jul 9 2026
.SYNOPSIS...
High pressure ridge will remain anchored across central and south
Florida this week as low pressure troughing develops to the north.
This pattern will maintain a southwest flow through early afternoon
followed by late afternoon and evening wind surges from the south to
Small Craft Exercise Caution wind speeds. The offshore flow will
allow for a slight chance of afternoon and evening thunderstorm over
the local coastal waters through Friday, with increased chances of
thunderstorms Saturday through early next week. Mariners should
expect locally strong wind gusts and frequent lightning with any
developing thunderstorms.
.GULF STREAM...
The approximate location of the west wall of the Gulf Stream as of
Jul 08, 2026 at 0000 UTC...
46 nautical miles east of Flagler Beach.
44 nautical miles east of Saint Augustine Beach.
56 nautical miles east southeast of Jacksonville Beach.
71 nautical miles east southeast of St Simons Island.
This data derived from NCEP Global RTOFS model.
$$
AMZ450-452-454-092315- 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- 412 AM EDT Thu Jul 9 2026 SMALL CRAFT EXERCISE CAUTION IN EFFECT FROM THIS EVENING THROUGH LATE TONIGHT TODAY Southwest winds 5 to 10 knots, becoming south 10 to 15 knots this afternoon. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: Southeast 3 feet at 5 seconds and east 2 feet at 9 seconds. Intracoastal waters a moderate chop. TONIGHT South winds 15 to 20 knots, becoming southwest 10 to 15 knots after midnight. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: Southeast 3 feet at 5 seconds. Intracoastal waters choppy. A slight chance of showers and thunderstorms in the evening. FRIDAY Southwest winds 5 to 10 knots, becoming south 15 to 20 knots in the afternoon. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: Southeast 3 feet at 5 seconds and east 2 feet at 9 seconds. Intracoastal waters choppy. FRIDAY NIGHT South winds 15 to 20 knots, becoming southwest 10 to 15 knots after midnight. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: South 4 feet at 5 seconds. Intracoastal waters choppy. SATURDAY Southwest winds 5 to 10 knots, becoming south 15 to 20 knots in the afternoon. Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at 5 seconds and east 2 feet at 8 seconds. Intracoastal waters choppy. A slight chance of showers and thunderstorms in the afternoon. SATURDAY NIGHT Southwest winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at 5 seconds and southeast 2 feet at 8 seconds. Intracoastal waters a moderate chop. A chance of showers and thunderstorms in the evening. SUNDAY Southwest winds 5 to 10 knots. Seas 2 to 3 feet. Intracoastal waters light chop. A chance of showers and thunderstorms through the night. A slight chance of showers and thunderstorms after midnight. MONDAY Southwest winds 5 to 10 knots, becoming west. Seas around 2 feet. Intracoastal waters light chop. Showers and thunderstorms likely. Winds and waves higher in and near thunderstorms. $$
AMZ450-452-454-092315- 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- 412 AM EDT Thu Jul 9 2026 SMALL CRAFT EXERCISE CAUTION IN EFFECT FROM THIS EVENING THROUGH LATE TONIGHT TODAY Southwest winds 5 to 10 knots, becoming south 10 to 15 knots this afternoon. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: Southeast 3 feet at 5 seconds and east 2 feet at 9 seconds. Intracoastal waters a moderate chop. TONIGHT South winds 15 to 20 knots, becoming southwest 10 to 15 knots after midnight. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: Southeast 3 feet at 5 seconds. Intracoastal waters choppy. A slight chance of showers and thunderstorms in the evening. FRIDAY Southwest winds 5 to 10 knots, becoming south 15 to 20 knots in the afternoon. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: Southeast 3 feet at 5 seconds and east 2 feet at 9 seconds. Intracoastal waters choppy. FRIDAY NIGHT South winds 15 to 20 knots, becoming southwest 10 to 15 knots after midnight. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: South 4 feet at 5 seconds. Intracoastal waters choppy. SATURDAY Southwest winds 5 to 10 knots, becoming south 15 to 20 knots in the afternoon. Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at 5 seconds and east 2 feet at 8 seconds. Intracoastal waters choppy. A slight chance of showers and thunderstorms in the afternoon. SATURDAY NIGHT Southwest winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at 5 seconds and southeast 2 feet at 8 seconds. Intracoastal waters a moderate chop. A chance of showers and thunderstorms in the evening. SUNDAY Southwest winds 5 to 10 knots. Seas 2 to 3 feet. Intracoastal waters light chop. A chance of showers and thunderstorms through the night. A slight chance of showers and thunderstorms after midnight. MONDAY Southwest winds 5 to 10 knots, becoming west. Seas around 2 feet. Intracoastal waters light chop. Showers and thunderstorms likely. Winds and waves higher in and near thunderstorms. $$