St. Marys Entrance
Fernandina Beach · Atlantic coast
Check St. Marys Entrance nowNWS advisories, tides and ebb, sun and moon. Free, no sign-up.Current in the inlet
NOAA publishes current predictions for this inlet (St. Marys Entrance, south jetty, station FEB1108). The ebb sets toward 110° (east); typical peak ebb 1.6 kn, up to 1.9 kn at spring tides.
Ebb against swell on the bar
Swell and wind from the east meet the ebb head on: waves get shorter and steeper and can break on the bar. The same swell on the flood is usually far easier. The app compares the hour-by-hour current with the forecast waves and wind to rate each hour.
Bar depth used to estimate wave steepening: about 14 m (46 ft). Sandbars move: this is not a chart and never says where to cross.
Local notes
- Navy channel (Kings Bay): security zones may be enforced around naval vessels.
Hour by hour, 48 hours ahead
The app rates every hour of the next 48 for St. Marys Entrance: Lower risk, Caution, Hazardous or Extreme, with waves on the bar, wind, current and the inlet map. Free trial of Pro for 7 days.
Data for this inlet
- NWS marine forecast, zone AMZ450
- NWS marine forecast, zone AMZ452
- NOAA tide predictions: St. Marys Entrance, North Jetty
- NOAA tide predictions: Fernandina Beach
- NOAA current predictions: St. Marys Entrance, south jetty
- NDBC buoy 41112 (waves, 10 km away)
- Wind observations: station FRDF1
- Airport weather: KFHB, KNIP