AMZ400-162100-
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-
224 AM EDT Thu Jul 16 2026
.SYNOPSIS...
Weak high pressure centered over south Florida will shift slowly
westward across the Gulf through Friday, creating a west to
northwest flow across our local waters, with an afternoon sea breeze
developing each day through Saturday. The National Hurricane Center
has highlighted a low chance, around 20 percent, for tropical
cyclone development later this weekend into early next week which
could bring scattered to numerous thunderstorms to our local waters
as southwest winds begin to prevail.
.GULF STREAM...
The approximate location of the west wall of the Gulf Stream as of
Jul 15, 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.
76 nautical miles east southeast of St Simons Island.
This data derived from NCEP Global RTOFS model.
$$
AMZ450-452-454-162100- 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- 224 AM EDT Thu Jul 16 2026 REST OF TONIGHT West winds around 10 knots. Seas 2 to 3 feet. Wave Detail: South 2 feet at 4 seconds. Intracoastal waters light chop. THURSDAY Northwest winds 5 to 10 knots, becoming southeast in the afternoon. Seas around 2 feet. Wave Detail: Northeast 2 feet at 7 seconds. Intracoastal waters light chop. A slight chance of showers and thunderstorms in the afternoon. THURSDAY NIGHT Southwest winds 5 to 10 knots, becoming west after midnight. Seas around 2 feet. Intracoastal waters light chop. FRIDAY West winds around 5 knots, becoming southeast in the afternoon. Seas around 2 feet. Intracoastal waters light chop. FRIDAY NIGHT South winds 5 to 10 knots. Seas around 2 feet. Wave Detail: South 2 feet at 3 seconds. Intracoastal waters light chop. SATURDAY South winds around 10 knots, increasing to 15 to 20 knots in the afternoon. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: Southeast 3 feet at 4 seconds. Intracoastal waters choppy. A chance of showers and thunderstorms in the afternoon. SATURDAY NIGHT South winds 15 to 20 knots, becoming southwest 10 to 15 knots after midnight. Seas 3 to 4 feet, occasionally to 5 feet. Intracoastal waters choppy. A chance of showers with a slight chance of thunderstorms in the evening. SUNDAY South winds 15 to 20 knots, becoming southwest 10 to 15 knots. Seas 2 to 4 feet, occasionally to 5 feet. Intracoastal waters choppy. A slight chance of showers and thunderstorms in the morning, then showers and thunderstorms likely in the afternoon. A chance of showers with a slight chance of thunderstorms in the evening, then a slight chance of showers after midnight. MONDAY Southwest winds 10 to 15 knots. Seas 2 to 3 feet. Intracoastal waters a moderate chop. A slight chance of showers in the morning, then a chance of showers and thunderstorms through the night. A slight chance of showers and thunderstorms after midnight. Winds and waves higher in and near thunderstorms. $$
AMZ450-452-454-162100- 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- 224 AM EDT Thu Jul 16 2026 REST OF TONIGHT West winds around 10 knots. Seas 2 to 3 feet. Wave Detail: South 2 feet at 4 seconds. Intracoastal waters light chop. THURSDAY Northwest winds 5 to 10 knots, becoming southeast in the afternoon. Seas around 2 feet. Wave Detail: Northeast 2 feet at 7 seconds. Intracoastal waters light chop. A slight chance of showers and thunderstorms in the afternoon. THURSDAY NIGHT Southwest winds 5 to 10 knots, becoming west after midnight. Seas around 2 feet. Intracoastal waters light chop. FRIDAY West winds around 5 knots, becoming southeast in the afternoon. Seas around 2 feet. Intracoastal waters light chop. FRIDAY NIGHT South winds 5 to 10 knots. Seas around 2 feet. Wave Detail: South 2 feet at 3 seconds. Intracoastal waters light chop. SATURDAY South winds around 10 knots, increasing to 15 to 20 knots in the afternoon. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: Southeast 3 feet at 4 seconds. Intracoastal waters choppy. A chance of showers and thunderstorms in the afternoon. SATURDAY NIGHT South winds 15 to 20 knots, becoming southwest 10 to 15 knots after midnight. Seas 3 to 4 feet, occasionally to 5 feet. Intracoastal waters choppy. A chance of showers with a slight chance of thunderstorms in the evening. SUNDAY South winds 15 to 20 knots, becoming southwest 10 to 15 knots. Seas 2 to 4 feet, occasionally to 5 feet. Intracoastal waters choppy. A slight chance of showers and thunderstorms in the morning, then showers and thunderstorms likely in the afternoon. A chance of showers with a slight chance of thunderstorms in the evening, then a slight chance of showers after midnight. MONDAY Southwest winds 10 to 15 knots. Seas 2 to 3 feet. Intracoastal waters a moderate chop. A slight chance of showers in the morning, then a chance of showers and thunderstorms through the night. A slight chance of showers and thunderstorms after midnight. Winds and waves higher in and near thunderstorms. $$