Carquinez Strait tidal current predictions

Now

Flood 0.9 ktToward E (98°)

Next slack

Sat 3:24 AMPDT

Next max flood

2.4 ktSat 12:27 AM

Next max ebb

2.7 ktSat 6:42 AM

Knots along the channel: above the line the flood, running in toward E (98°); below it the ebb, running out toward WNW (289°). Times are Pacific Daylight Time. Today: slack 2:40 AM, ebb 2.8 kt 6:07 AM, slack 9:42 AM, flood 2.7 kt 12:27 PM, slack 3:35 PM, ebb 2.4 kt 6:39 PM, slack 9:56 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.

• Carquinez Bridge, I-80Harmonic current station0.5 mi
• Dillon PointHarmonic current station1.4 mi
• Mare Island Strait (Buoy "4")Subordinate current station1.6 mi
• Mare Island Strait, NE of Pier 34Harmonic current station1.9 mi
• Davis Point, (midchannel)Subordinate current station2.2 mi
• Davis Point, 1.0 nmi. NW ofHarmonic current station3.2 mi
• Wilson Point, 1.55 nmi. north ofSubordinate current station4.0 mi
• Martinez Marina, 0.65 nmi. NW ofSubordinate current station4.2 mi

• Tide times at Crockett 0.3 mi
• Tide times at Selby 1.4 mi
• Tide times at Mare Island 1.8 mi
• Forecast for Crockett, CA
• Open the live map with tidal currents
• All tidal current stations in California

Tidal current predictions from NOAA’s Center for Operational Oceanographic Products and Services (CO-OPS), station SFB1319, bin 10: original at NOAA. Marine alerts from the National Weather Service.