AMZ400-210300-
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-
751 AM EDT Sat Jun 20 2026
.SYNOPSIS...
A frontal boundary will move south into the area waters today
bringing additional rounds of thunderstorms this afternoon and
evening. These storms may produce gusty winds, frequent lightning
and very heavy rain. The front will weaken near the Northeast
Florida waters on Sunday with isolated thunderstorms in the
afternoon. Weak high pressure ridge will slowly build in over the
area waters early Monday and into Tuesday with isolated to scattered
thunderstorms returning by midweek as another front moves in from
the north. Stronger offshore winds with exercise caution level winds
looks probable Monday into Tuesday.
.GULF STREAM...
The approximate location of the west wall of the Gulf Stream as of
Jun 19, 2026 at 0000 UTC...
46 nautical miles east of Flagler Beach.
49 nautical miles east of Saint Augustine Beach.
60 nautical miles east southeast of Jacksonville Beach.
76 nautical miles east southeast of St Simons Island.
This data derived from NCEP Global RTOFS model.
$$
AMZ450-452-454-210300- Coastal waters from Altamaha Sound to Fernandina Beach FL out 20 NM- Coastal waters from Fernandina Beach to St. Augustine FL out 20 NM- Coastal waters from St. Augustine to Flagler Beach FL out 20 NM- 751 AM EDT Sat Jun 20 2026 REST OF TODAY West winds 5 to 10 knots. Seas around 2 feet. Wave Detail: Southeast 2 feet at 7 seconds. Intracoastal waters light chop. A slight chance of showers this morning. Showers and thunderstorms likely this afternoon. TONIGHT West winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at 7 seconds. Intracoastal waters light chop. A chance of showers and thunderstorms in the evening. SUNDAY West winds 5 to 10 knots, becoming southeast in the afternoon. Seas around 2 feet. Intracoastal waters light chop. A slight chance of showers and thunderstorms in the afternoon. SUNDAY NIGHT Southwest winds around 10 knots. Seas around 2 feet. Wave Detail: South 2 feet at 3 seconds. Intracoastal waters light chop. MONDAY West winds 5 to 10 knots, becoming south 10 to 15 knots in the afternoon. Seas around 2 feet. Wave Detail: Southwest 2 feet at 3 seconds. Intracoastal waters a moderate chop. MONDAY NIGHT Southwest winds 10 to 15 knots, becoming west after midnight. Seas 2 to 3 feet. Wave Detail: South 2 feet at 4 seconds and southeast 2 feet at 7 seconds. Intracoastal waters a moderate chop. TUESDAY THROUGH WEDNESDAY Southwest winds 10 to 15 knots. Seas 2 to 3 feet. Intracoastal waters a moderate chop. A chance of showers and thunderstorms. Winds and waves higher in and near thunderstorms. $$
AMZ450-452-454-210300- 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- 751 AM EDT Sat Jun 20 2026 REST OF TODAY West winds 5 to 10 knots. Seas around 2 feet. Wave Detail: Southeast 2 feet at 7 seconds. Intracoastal waters light chop. A slight chance of showers this morning. Showers and thunderstorms likely this afternoon. TONIGHT West winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at 7 seconds. Intracoastal waters light chop. A chance of showers and thunderstorms in the evening. SUNDAY West winds 5 to 10 knots, becoming southeast in the afternoon. Seas around 2 feet. Intracoastal waters light chop. A slight chance of showers and thunderstorms in the afternoon. SUNDAY NIGHT Southwest winds around 10 knots. Seas around 2 feet. Wave Detail: South 2 feet at 3 seconds. Intracoastal waters light chop. MONDAY West winds 5 to 10 knots, becoming south 10 to 15 knots in the afternoon. Seas around 2 feet. Wave Detail: Southwest 2 feet at 3 seconds. Intracoastal waters a moderate chop. MONDAY NIGHT Southwest winds 10 to 15 knots, becoming west after midnight. Seas 2 to 3 feet. Wave Detail: South 2 feet at 4 seconds and southeast 2 feet at 7 seconds. Intracoastal waters a moderate chop. TUESDAY THROUGH WEDNESDAY Southwest winds 10 to 15 knots. Seas 2 to 3 feet. Intracoastal waters a moderate chop. A chance of showers and thunderstorms. Winds and waves higher in and near thunderstorms. $$