AMZ400-120430-
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-
922 AM EDT Wed Mar 11 2026
.SYNOPSIS...
Surface high pressure will shift further south today causing winds
to gradually increase from the south and southwest and reach exercise
caution levels by late this afternoon and early evening. A cold
front will move into the southeast states tonight and move into
the area waters on Thursday morning and move through Thursday
afternoon with showers and a few stronger thunderstorms. Strong
northwest winds in the wake of this frontal passage will create
Small Craft Advisory conditions throughout our local waters by
late Thursday afternoon, with these conditions continuing on
Thursday night and Friday morning as high pressure briefly builds
over the Mid- Atlantic states. Winds will quickly shift to north
on Thursday night and then northeast by early Friday before speeds
gradually diminish on Friday afternoon and evening.
.GULF STREAM...
The approximate location of the west wall of the Gulf Stream as of
Mar 10, 2026 at 0000 UTC...
46 nautical miles east of Flagler Beach.
53 nautical miles east of Saint Augustine Beach.
64 nautical miles east southeast of Jacksonville Beach.
68 nautical miles east southeast of St Simons Island.
This data derived from NCEP Global RTOFS model.
$$
AMZ450-452-454-120430- 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- 922 AM EDT Wed Mar 11 2026 SMALL CRAFT EXERCISE CAUTION IN EFFECT FROM 5 PM EDT THIS AFTERNOON THROUGH LATE TONIGHT REST OF TODAY South winds 5 to 10 knots, becoming southeast 15 to 20 knots this afternoon. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: Southeast 3 feet at 4 seconds and east 3 feet at 9 seconds. Intracoastal waters choppy. TONIGHT South winds 15 to 20 knots, becoming southwest 10 to 15 knots after midnight. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: Southeast 4 feet at 5 seconds and east 2 feet at 9 seconds. Intracoastal waters choppy. THURSDAY Southwest winds 10 to 15 knots, becoming northwest 15 to 20 knots in the afternoon. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: Southeast 3 feet at 6 seconds and east 3 feet at 9 seconds. Intracoastal waters choppy. A slight chance of thunderstorms. A chance of showers in the morning, then showers in the afternoon. THURSDAY NIGHT Northeast winds 20 to 25 knots. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: Northeast 6 feet at 8 seconds and north 4 feet at 4 seconds. Intracoastal waters rough. A chance of showers, mainly in the evening. FRIDAY Northeast winds 15 to 20 knots, diminishing to around 10 knots in the afternoon. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: Northeast 6 feet at 8 seconds. Intracoastal waters choppy. A slight chance of showers in the morning, then a chance of showers in the afternoon. FRIDAY NIGHT Northeast winds 5 to 10 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: Northeast 5 feet at 8 seconds. Intracoastal waters light chop. A slight chance of showers in the evening. SATURDAY Northeast winds 5 to 10 knots, becoming southeast. Seas 3 to 4 feet, occasionally to 5 feet. Intracoastal waters light chop. A chance of showers through the day. A slight chance of thunderstorms in the afternoon, then a slight chance of showers in the evening. A chance of thunderstorms through the night. A chance of showers after midnight. SUNDAY Southeast winds 10 to 15 knots, becoming south 15 to 20 knots. Seas 3 to 4 feet, occasionally to 5 feet. Intracoastal waters choppy. A slight chance of thunderstorms in the morning. Showers likely through the day. A chance of thunderstorms. A chance of showers through the night. Winds and waves higher in and near thunderstorms. $$
AMZ450-452-454-120430- 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- 922 AM EDT Wed Mar 11 2026 SMALL CRAFT EXERCISE CAUTION IN EFFECT FROM 5 PM EDT THIS AFTERNOON THROUGH LATE TONIGHT REST OF TODAY South winds 5 to 10 knots, becoming southeast 15 to 20 knots this afternoon. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: Southeast 3 feet at 4 seconds and east 3 feet at 9 seconds. Intracoastal waters choppy. TONIGHT South winds 15 to 20 knots, becoming southwest 10 to 15 knots after midnight. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: Southeast 4 feet at 5 seconds and east 2 feet at 9 seconds. Intracoastal waters choppy. THURSDAY Southwest winds 10 to 15 knots, becoming northwest 15 to 20 knots in the afternoon. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: Southeast 3 feet at 6 seconds and east 3 feet at 9 seconds. Intracoastal waters choppy. A slight chance of thunderstorms. A chance of showers in the morning, then showers in the afternoon. THURSDAY NIGHT Northeast winds 20 to 25 knots. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: Northeast 6 feet at 8 seconds and north 4 feet at 4 seconds. Intracoastal waters rough. A chance of showers, mainly in the evening. FRIDAY Northeast winds 15 to 20 knots, diminishing to around 10 knots in the afternoon. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: Northeast 6 feet at 8 seconds. Intracoastal waters choppy. A slight chance of showers in the morning, then a chance of showers in the afternoon. FRIDAY NIGHT Northeast winds 5 to 10 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: Northeast 5 feet at 8 seconds. Intracoastal waters light chop. A slight chance of showers in the evening. SATURDAY Northeast winds 5 to 10 knots, becoming southeast. Seas 3 to 4 feet, occasionally to 5 feet. Intracoastal waters light chop. A chance of showers through the day. A slight chance of thunderstorms in the afternoon, then a slight chance of showers in the evening. A chance of thunderstorms through the night. A chance of showers after midnight. SUNDAY Southeast winds 10 to 15 knots, becoming south 15 to 20 knots. Seas 3 to 4 feet, occasionally to 5 feet. Intracoastal waters choppy. A slight chance of thunderstorms in the morning. Showers likely through the day. A chance of thunderstorms. A chance of showers through the night. Winds and waves higher in and near thunderstorms. $$