Carquinez Bridge, I-80 tidal current predictions
Ebbing 1.3 kt now, toward W (269°), building. Maximum ebb 1.3 kt at 11:12 AM.
Now
Today, Thu, Oct 1, at 20 ft deep.
- Now
- Ebb 1.3 ktToward W (269°)
- Next slack
- 1:23 PMPDT
- Next max flood
- 1.9 kt4:04 PM
- Next max ebb
- 1.3 kt11:12 AM
Knots along the channel: above the line the flood, running in toward E (92°); below it the ebb, running out toward W (269°). Times are Pacific Daylight Time. Today: slack 2:09 AM, flood 1.3 kt 5:16 AM, slack 8:24 AM, ebb 1.3 kt 11:12 AM, slack 1:23 PM, flood 1.9 kt 4:04 PM, slack 6:44 PM, ebb 2.6 kt 10:21 PM.
Alerts in force
National Weather Service marine and coastal products at this station’s position.
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.
7-day current table
Strongest flood this week 2.1 kt, Wed, Oct 7 at 11:18 AM. Strongest ebb 2.6 kt, Thu, Oct 1 at 10:21 PM.
| Time | Event | Speed | Toward |
|---|---|---|---|
| Thu, Oct 1 | |||
| 2:09 AM | Slack water | ||
| 5:16 AM | Maximum flood | 1.3 kt | E (92°) |
| 8:24 AM | Slack water | ||
| 11:12 AM | Maximum ebb | 1.3 kt | W (269°) |
| 1:23 PM | Slack water | ||
| 4:04 PM | Maximum flood | 1.9 kt | E (92°) |
| 6:44 PM | Slack water | ||
| 10:21 PM | Maximum ebb | 2.6 kt | W (269°) |
| Fri, Oct 2 | |||
| 3:17 AM | Slack water | ||
| 6:34 AM | Maximum flood | 1.1 kt | E (92°) |
| 9:26 AM | Slack water | ||
| 12:14 PM | Maximum ebb | 1.3 kt | W (269°) |
| 2:20 PM | Slack water | ||
| 5:00 PM | Maximum flood | 1.8 kt | E (92°) |
| 7:44 PM | Slack water | ||
| 11:33 PM | Maximum ebb | 2.4 kt | W (269°) |
| Sat, Oct 3 | |||
| 4:35 AM | Slack water | ||
| 7:56 AM | Maximum flood | 1.1 kt | E (92°) |
| 10:29 AM | Slack water | ||
| 1:14 PM | Maximum ebb | 1.4 kt | W (269°) |
| 3:23 PM | Slack water | ||
| 6:04 PM | Maximum flood | 1.7 kt | E (92°) |
| 8:53 PM | Slack water | ||
| Sun, Oct 4 | |||
| 1:07 AM | Maximum ebb | 2.3 kt | W (269°) |
| 5:49 AM | Slack water | ||
| 9:04 AM | Maximum flood | 1.2 kt | E (92°) |
| 11:31 AM | Slack water | ||
| 2:14 PM | Maximum ebb | 1.6 kt | W (269°) |
| 4:33 PM | Slack water | ||
| 7:15 PM | Maximum flood | 1.6 kt | E (92°) |
| 10:10 PM | Slack water | ||
| Mon, Oct 5 | |||
| 2:27 AM | Maximum ebb | 2.3 kt | W (269°) |
| 6:46 AM | Slack water | ||
| 9:58 AM | Maximum flood | 1.5 kt | E (92°) |
| 12:28 PM | Slack water | ||
| 3:16 PM | Maximum ebb | 1.8 kt | W (269°) |
| 5:49 PM | Slack water | ||
| 8:32 PM | Maximum flood | 1.5 kt | E (92°) |
| 11:25 PM | Slack water | ||
| Tue, Oct 6 | |||
| 3:32 AM | Maximum ebb | 2.4 kt | W (269°) |
| 7:29 AM | Slack water | ||
| 10:41 AM | Maximum flood | 1.9 kt | E (92°) |
| 1:21 PM | Slack water | ||
| 4:17 PM | Maximum ebb | 2.1 kt | W (269°) |
| 7:08 PM | Slack water | ||
| 9:49 PM | Maximum flood | 1.6 kt | E (92°) |
| Wed, Oct 7 | |||
| 12:32 AM | Slack water | ||
| 4:29 AM | Maximum ebb | 2.5 kt | W (269°) |
| 8:06 AM | Slack water | ||
| 11:18 AM | Maximum flood | 2.1 kt | E (92°) |
| 2:08 PM | Slack water | ||
| 5:15 PM | Maximum ebb | 2.5 kt | W (269°) |
| 8:22 PM | Slack water | ||
| 10:57 PM | Maximum flood | 1.6 kt | E (92°) |
Other depths
NOAA predicts the current at more than one depth here. This page is for the shallowest; the water deeper down turns at different times and runs at different speeds.
| Depth | Strongest flood today | Strongest ebb today |
|---|---|---|
| 20 ft | 1.9 kt 4:04 PM | 2.6 kt 10:21 PM |
| 39 ft | ||
| 72 ft | 2.2 kt 3:14 PM | 2.1 kt 11:01 PM |
What this means
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.
Nearby8
The closest other NOAA current stations, nearest first.
- Carquinez StraitHarmonic current station
- Mare Island Strait (Buoy "4")Subordinate current station
- Mare Island Strait, NE of Pier 34Harmonic current station
- Davis Point, (midchannel)Subordinate current station
- Dillon PointHarmonic current station
- Davis Point, 1.0 nmi. NW ofHarmonic current station
- Wilson Point, 1.55 nmi. north ofSubordinate current station
- Martinez Marina, 0.65 nmi. NW ofSubordinate current station
More for this place
Sources
Tidal current predictions from NOAA’s Center for Operational Oceanographic Products and Services (CO-OPS), station SFB1318, bin 9: original at NOAA. Marine alerts from the National Weather Service.