Range A2, LB 29, Cumberland Sound tidal current predictions

Now

Flood 0.9 ktToward NNW (341°)

Next slack

Thu 1:34 AMEDT

Next max flood

1.4 kt10:19 PM

Next max ebb

1.7 ktThu 3:56 AM

Knots along the channel: above the line the flood, running in toward NNW (341°); below it the ebb, running out toward S (182°). Times are Eastern Daylight Time. Today: slack 12:44 AM, ebb 1.8 kt 3:09 AM, slack 6:05 AM, flood 1.5 kt 9:39 AM, slack 12:55 PM, ebb 2.5 kt 3:47 PM, slack 7:33 PM, flood 1.4 kt 10:19 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.

• Fort Clinch, 1.1 nmi NW ofSubordinate current station1.3 mi
• Range A, LB 23, St Marys RiverCurrent meter (NOAA PORTS)1.8 mi
• Quarantine Reach, 0.4nm W of Fort ClinchHarmonic current station1.9 mi
• Drum Point Island, Range D ChannelSubordinate current station2.4 mi
• St. Mary's River EntranceHarmonic current station2.6 mi
• Old Fernandina, Amelia River, Old Town ReachHarmonic current station3.0 mi
• Range E, LB 43, Cumberland SoundCurrent meter (NOAA PORTS)3.5 mi
• Fernandina Beach, City Front Reach, Amelia RiverHarmonic current station3.9 mi

• Tide times at Beach Creek ent., Cumberland Island 0.5 mi
• Tide times at Cut 1N Front Range, St Marys River Entr 1.6 mi
• Tide times at St. Marys Entrance, North Jetty 2.4 mi
• Forecast for St. Marys, GA
• Open the live map with tidal currents
• All tidal current stations in Georgia

Tidal current predictions and real-time current measurements (PORTS) from NOAA’s Center for Operational Oceanographic Products and Services (CO-OPS), station kb0301, bin 1: original at NOAA. Marine alerts from the National Weather Service.