Range A, LB 23, St Marys River tidal current predictions

Now

Flood 1.4 ktToward WNW (295°)

Next slack

9:47 AMEDT

Next max flood

1.8 kt6:59 PM

Next max ebb

2.2 kt11:59 AM

Knots along the channel: above the line the flood, running in toward WNW (295°); below it the ebb, running out toward E (98°). Times are Eastern Daylight Time. Today: slack 3:09 AM, flood 1.9 kt 6:26 AM, slack 9:47 AM, ebb 2.2 kt 11:59 AM, slack 3:49 PM, flood 1.8 kt 6:59 PM, slack 10:06 PM.

None right now. The National Weather Service issues small craft advisories, gale and storm warnings, special marine warnings, dense fog advisories and coastal flood products for water like this.

The flood is the tidal current running in from the sea, the ebb the current running back out. Slack water is the short turn between them, when the current is weakest: the time to cross a strong channel, anchor, or dive. Slack in a channel is not the time of high or low tide; it can come hours after.

Speeds are knots along the channel's main axis, and directions are degrees true toward which the water flows, as NOAA prints its tables. A current against the wind stands the waves up steep and close together.

Predictions are astronomical: the moon and the sun, not the weather. Strong wind, river flow after heavy rain and storm surge all change the real current.

• Quarantine Reach, 0.4nm W of Fort ClinchHarmonic current station0.4 mi
• Fort Clinch, 1.1 nmi NW ofSubordinate current station0.8 mi
• St. Mary's River EntranceHarmonic current station0.9 mi
• Old Fernandina, Amelia River, Old Town ReachHarmonic current station1.7 mi
• Range A2, LB 29, Cumberland SoundCurrent meter (NOAA PORTS)1.8 mi
• St Marys Entrance, LB 19Current meter (NOAA PORTS)2.6 mi
• Fernandina Beach, City Front Reach, Amelia RiverHarmonic current station2.8 mi
• south jettyHarmonic current station3.6 mi

• Tide times at Cut 1N Front Range, St Marys River Entr 0.4 mi
• Tide times at St. Marys Entrance, North Jetty 1.1 mi
• Tide times at Beach Creek ent., Cumberland Island 1.5 mi
• Forecast for Fernandina Beach, FL
• Open the live map with tidal currents
• All tidal current stations in Florida

Tidal current predictions and real-time current measurements (PORTS) from NOAA’s Center for Operational Oceanographic Products and Services (CO-OPS), station kb0201, bin 1: original at NOAA. Marine alerts from the National Weather Service.