AMZ400-180345-
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-
833 AM EDT Wed Jun 17 2026
.SYNOPSIS...
A breezy southwesterly offshore flow continues across the waters
this morning and afternoon with Small Craft Exercise Caution
conditions. Breezy offshore winds will continue through the end of
the week as a remnant wave of low pressure tracks north of the
waters through Friday. A weak front trailing the low pressure will
stall north of the waters and weaken the offshore flow by Sunday.
After a day or two of onshore flow, offshore flow pattern will
return as another broader front approaches from the north around the
Tuesday or Wednesday next week. During the period of offshore winds,
elevated chances of daily scattered to numerous showers and
afternoon thunderstorms will be possible.
.GULF STREAM...
The approximate location of the west wall of the Gulf Stream as of
Jun 16, 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.
76 nautical miles east southeast of St Simons Island.
This data derived from NCEP Global RTOFS model.
$$
AMZ450-452-180345- Coastal waters from Altamaha Sound to Fernandina Beach FL out 20 NM- Coastal waters from Fernandina Beach to St. Augustine FL out 20 NM- 833 AM EDT Wed Jun 17 2026 SMALL CRAFT EXERCISE CAUTION IN EFFECT UNTIL 2 PM EDT THIS AFTERNOON REST OF TODAY Southwest winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: Southwest 3 feet at 4 seconds. Intracoastal waters a moderate chop. A chance of showers with a slight chance of thunderstorms. TONIGHT Southwest winds 5 to 10 knots, increasing to 10 to 15 knots after midnight. Seas around 2 feet. Wave Detail: South 2 feet at 4 seconds and southeast 2 feet at 8 seconds. Intracoastal waters a moderate chop. THURSDAY South winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at 4 seconds and southeast 2 feet at 8 seconds. Intracoastal waters a moderate chop. Showers and thunderstorms likely in the afternoon. THURSDAY NIGHT South winds 10 to 15 knots, becoming southwest 15 to 20 knots after midnight. Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at 5 seconds. Intracoastal waters choppy. A slight chance of showers and thunderstorms in the evening, then a chance of showers after midnight. FRIDAY Southwest winds 15 to 20 knots, diminishing to 10 to 15 knots in the afternoon. Seas 2 to 3 feet. Wave Detail: Southwest 3 feet at 5 seconds and southeast 2 feet at 8 seconds. Intracoastal waters choppy. A chance of showers with a slight chance of thunderstorms in the morning, then showers likely with a chance of thunderstorms in the afternoon. FRIDAY NIGHT West winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: Southwest 2 feet at 4 seconds and southeast 2 feet at 7 seconds. Intracoastal waters a moderate chop. A chance of showers. A chance of thunderstorms, mainly in the evening. SATURDAY Northwest winds 10 to 15 knots, becoming west around 5 knots. Seas around 2 feet, then 1 foot or less. Intracoastal waters a moderate chop. A chance of showers and thunderstorms in the morning, then showers and thunderstorms likely in the afternoon. A slight chance of showers and thunderstorms in the evening. SUNDAY East winds 5 to 10 knots, becoming south. Waves 1 foot or less, then around 2 feet. Intracoastal waters light chop. A slight chance of thunderstorms. A slight chance of showers. Winds and waves higher in and near thunderstorms. $$
AMZ450-452-180345- Coastal waters from Altamaha Sound to Fernandina Beach FL out 20 NM- Coastal waters from Fernandina Beach to St. Augustine FL out 20 NM- 833 AM EDT Wed Jun 17 2026 SMALL CRAFT EXERCISE CAUTION IN EFFECT UNTIL 2 PM EDT THIS AFTERNOON REST OF TODAY Southwest winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: Southwest 3 feet at 4 seconds. Intracoastal waters a moderate chop. A chance of showers with a slight chance of thunderstorms. TONIGHT Southwest winds 5 to 10 knots, increasing to 10 to 15 knots after midnight. Seas around 2 feet. Wave Detail: South 2 feet at 4 seconds and southeast 2 feet at 8 seconds. Intracoastal waters a moderate chop. THURSDAY South winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at 4 seconds and southeast 2 feet at 8 seconds. Intracoastal waters a moderate chop. Showers and thunderstorms likely in the afternoon. THURSDAY NIGHT South winds 10 to 15 knots, becoming southwest 15 to 20 knots after midnight. Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at 5 seconds. Intracoastal waters choppy. A slight chance of showers and thunderstorms in the evening, then a chance of showers after midnight. FRIDAY Southwest winds 15 to 20 knots, diminishing to 10 to 15 knots in the afternoon. Seas 2 to 3 feet. Wave Detail: Southwest 3 feet at 5 seconds and southeast 2 feet at 8 seconds. Intracoastal waters choppy. A chance of showers with a slight chance of thunderstorms in the morning, then showers likely with a chance of thunderstorms in the afternoon. FRIDAY NIGHT West winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: Southwest 2 feet at 4 seconds and southeast 2 feet at 7 seconds. Intracoastal waters a moderate chop. A chance of showers. A chance of thunderstorms, mainly in the evening. SATURDAY Northwest winds 10 to 15 knots, becoming west around 5 knots. Seas around 2 feet, then 1 foot or less. Intracoastal waters a moderate chop. A chance of showers and thunderstorms in the morning, then showers and thunderstorms likely in the afternoon. A slight chance of showers and thunderstorms in the evening. SUNDAY East winds 5 to 10 knots, becoming south. Waves 1 foot or less, then around 2 feet. Intracoastal waters light chop. A slight chance of thunderstorms. A slight chance of showers. Winds and waves higher in and near thunderstorms. $$