AMZ400-180015-
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-
405 AM EST Sat Jan 17 2026
.SYNOPSIS...
High pressure centered over the Florida peninsula will shift
eastward today ahead of an approaching Arctic cold front, with
prevailing southerly winds developing this afternoon and evening.
Showers will overspread our local waters as this front passes
through late tonight and Sunday morning. Northwesterly winds will
strengthen after midnight, reaching Small Craft Advisory levels on
Sunday morning. Arctic high pressure will remain centered to the
west or northwest of our region early next week, keeping breezy
northwest to northerly winds and elevated seas in place through
midweek. High pressure will then weaken over the southeastern
states on Wednesday, allowing for onshore winds to develop across
our local waters. Weak low pressure traversing the northern Gulf
coast on Wednesday night and Thursday may spread a round of
scattered showers through Thursday night, mainly for the northeast
Florida waters.
.GULF STREAM...
The approximate location of the west wall of the Gulf Stream as of
Jan 16, 2026 at 0000 UTC...
50 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.
$$
AMZ450-452-454-180015- Coastal waters from Altamaha Sound to Fernandina Beach FL out 20 NM- Coastal waters from Fernandina Beach to St. Augustine FL out 20 NM- Coastal waters from St. Augustine to Flagler Beach FL out 20 NM- 405 AM EST Sat Jan 17 2026 TODAY South winds 5 to 10 knots, becoming southeast this afternoon. Seas around 2 feet. Intracoastal waters mostly smooth. TONIGHT South southwest winds around 10 knots, becoming northwest around 15 knots after midnight. Seas around 2 feet. Intracoastal waters becoming a moderate chop. A chance of showers after midnight. SUNDAY Northwest winds around 20 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: North 4 feet at 4 seconds. Intracoastal waters rough. Showers likely, mainly in the morning. SUNDAY NIGHT Northwest winds 15 to 20 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: North 3 feet at 5 seconds. Intracoastal waters choppy. MONDAY AND MONDAY NIGHT Northwest winds 10 to 15 knots, increasing to 15 to 20 knots after midnight. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: North 3 feet at 5 seconds and east 2 feet at 9 seconds. Intracoastal waters choppy. TUESDAY AND TUESDAY NIGHT North winds 15 to 20 knots, becoming northeast around 15 knots after midnight. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: North 3 feet at 4 seconds and east 2 feet at 9 seconds. Intracoastal waters becoming a moderate chop. WEDNESDAY AND WEDNESDAY NIGHT Northeast winds 10 to 15 knots, diminishing to around 10 knots after midnight. Seas 3 to 4 feet, occasionally to 5 feet. Intracoastal waters a light chop. A slight chance of showers after midnight. $$
AMZ450-452-454-180015- 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- 405 AM EST Sat Jan 17 2026 TODAY South winds 5 to 10 knots, becoming southeast this afternoon. Seas around 2 feet. Intracoastal waters mostly smooth. TONIGHT South southwest winds around 10 knots, becoming northwest around 15 knots after midnight. Seas around 2 feet. Intracoastal waters becoming a moderate chop. A chance of showers after midnight. SUNDAY Northwest winds around 20 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: North 4 feet at 4 seconds. Intracoastal waters rough. Showers likely, mainly in the morning. SUNDAY NIGHT Northwest winds 15 to 20 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: North 3 feet at 5 seconds. Intracoastal waters choppy. MONDAY AND MONDAY NIGHT Northwest winds 10 to 15 knots, increasing to 15 to 20 knots after midnight. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: North 3 feet at 5 seconds and east 2 feet at 9 seconds. Intracoastal waters choppy. TUESDAY AND TUESDAY NIGHT North winds 15 to 20 knots, becoming northeast around 15 knots after midnight. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: North 3 feet at 4 seconds and east 2 feet at 9 seconds. Intracoastal waters becoming a moderate chop. WEDNESDAY AND WEDNESDAY NIGHT Northeast winds 10 to 15 knots, diminishing to around 10 knots after midnight. Seas 3 to 4 feet, occasionally to 5 feet. Intracoastal waters a light chop. A slight chance of showers after midnight. $$