Hazardous marine condition(s):
Small Craft Advisory
AMZ400-191500-
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-
800 PM EDT Wed Mar 18 2026
.SYNOPSIS...
High pressure north of the region will wedge down the southeastern
seaboard tonight while a coastal trough forms east of the waters
with isolated showers offshore. Elevated winds and seas will bring
Small Craft Advisory conditions over the Northeast Florida and
Offshore Southeast Georgia waters later tonight through Thursday
afternoon. Winds and seas are expected to diminish by Friday as high
pressure center reforms to the west of the waters before settling
over the local waters Friday night into Saturday. The high will sink
south of the waters on Sunday into Monday with southwest to westerly
winds ahead of a cold front moving into the waters next Tuesday with
increasing northeasterly winds and seas.
.GULF STREAM...
The approximate location of the west wall of the Gulf Stream as of
Mar 18, 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.
76 nautical miles east southeast of St Simons Island.
This data derived from NCEP Global RTOFS model.
$$
AMZ452-454-470-472-474-191500- Coastal waters from Fernandina Beach to St. Augustine FL out 20 NM- Coastal waters from St. Augustine to Flagler Beach FL out 20 NM- Waters from Altamaha Sound GA to Fernandina Beach FL from 20 to 60 NM- Waters from Fernandina Beach to St. Augustine FL from 20 to 60 NM- Waters from St. Augustine to Flagler Beach FL from 20 to 60 NM- 800 PM EDT Wed Mar 18 2026 SMALL CRAFT EXERCISE CAUTION IN EFFECT UNTIL 2 AM EDT THURSDAY SMALL CRAFT ADVISORY IN EFFECT FROM 2 AM EDT THURSDAY THROUGH THURSDAY AFTERNOON REST OF TONIGHT North winds 15 to 20 knots, increasing to 20 to 25 knots. Seas 5 to 7 feet, occasionally to 9 feet. Wave Detail: North 6 feet at 6 seconds and east 4 feet at 9 seconds. Intracoastal waters rough. THURSDAY North winds 20 to 25 knots. Seas 5 to 8 feet, occasionally to 10 feet. Wave Detail: Northeast 7 feet at 6 seconds and east 7 feet at 10 seconds. Intracoastal waters rough. THURSDAY NIGHT Northeast winds 15 to 20 knots. Seas 5 to 7 feet, occasionally to 9 feet. Wave Detail: Northeast 7 feet at 8 seconds. Intracoastal waters choppy. FRIDAY North winds 15 to 20 knots, becoming northeast 10 to 15 knots in the afternoon. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: Northeast 6 feet at 9 seconds and north 2 feet at 5 seconds. Intracoastal waters choppy. FRIDAY NIGHT Northeast winds 5 to 10 knots, becoming west after midnight. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: East 5 feet at 10 seconds. Intracoastal waters light chop. SATURDAY AND SATURDAY NIGHT West winds 10 to 15 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: East 5 feet at 10 seconds and southwest 2 feet at 3 seconds. Intracoastal waters a moderate chop. SUNDAY Southwest winds 10 to 15 knots, increasing to 15 to 20 knots. Seas 3 to 4 feet, occasionally to 5 feet. Intracoastal waters choppy. MONDAY Southwest winds 10 to 15 knots, becoming west 20 to 25 knots. Seas 2 to 4 feet, occasionally to 5 feet. Intracoastal waters rough. A slight chance of showers in the evening. A slight chance of showers and thunderstorms after midnight. Winds and waves higher in and near thunderstorms. $$
AMZ452-454-470-472-474-191500- Coastal waters from Fernandina Beach to St. Augustine FL out 20 NM- Coastal waters from St. Augustine to Flagler Beach FL out 20 NM- Waters from Altamaha Sound GA to Fernandina Beach FL from 20 to 60 NM- Waters from Fernandina Beach to St. Augustine FL from 20 to 60 NM- Waters from St. Augustine to Flagler Beach FL from 20 to 60 NM- 800 PM EDT Wed Mar 18 2026 SMALL CRAFT EXERCISE CAUTION IN EFFECT UNTIL 2 AM EDT THURSDAY SMALL CRAFT ADVISORY IN EFFECT FROM 2 AM EDT THURSDAY THROUGH THURSDAY AFTERNOON REST OF TONIGHT North winds 15 to 20 knots, increasing to 20 to 25 knots. Seas 5 to 7 feet, occasionally to 9 feet. Wave Detail: North 6 feet at 6 seconds and east 4 feet at 9 seconds. Intracoastal waters rough. THURSDAY North winds 20 to 25 knots. Seas 5 to 8 feet, occasionally to 10 feet. Wave Detail: Northeast 7 feet at 6 seconds and east 7 feet at 10 seconds. Intracoastal waters rough. THURSDAY NIGHT Northeast winds 15 to 20 knots. Seas 5 to 7 feet, occasionally to 9 feet. Wave Detail: Northeast 7 feet at 8 seconds. Intracoastal waters choppy. FRIDAY North winds 15 to 20 knots, becoming northeast 10 to 15 knots in the afternoon. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: Northeast 6 feet at 9 seconds and north 2 feet at 5 seconds. Intracoastal waters choppy. FRIDAY NIGHT Northeast winds 5 to 10 knots, becoming west after midnight. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: East 5 feet at 10 seconds. Intracoastal waters light chop. SATURDAY AND SATURDAY NIGHT West winds 10 to 15 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: East 5 feet at 10 seconds and southwest 2 feet at 3 seconds. Intracoastal waters a moderate chop. SUNDAY Southwest winds 10 to 15 knots, increasing to 15 to 20 knots. Seas 3 to 4 feet, occasionally to 5 feet. Intracoastal waters choppy. MONDAY Southwest winds 10 to 15 knots, becoming west 20 to 25 knots. Seas 2 to 4 feet, occasionally to 5 feet. Intracoastal waters rough. A slight chance of showers in the evening. A slight chance of showers and thunderstorms after midnight. Winds and waves higher in and near thunderstorms. $$