South Channel tidal current predictions
Flooding 1.3 kt now, toward NNE (23°), easing. Slack at 1:11 PM, then ebb to 2.0 kt at 3:56 PM.
Now
Today, Sun, Sep 27, at depth not given.
- Now
- Flood 1.3 ktToward NNE (23°)
- Next slack
- 1:11 PMPDT
- Next max flood
- 1.3 kt10:20 PM
- Next max ebb
- 2.0 kt3:56 PM
Knots along the channel: above the line the flood, running in toward NNE (23°); below it the ebb, running out toward S (180°). Times are Pacific Daylight Time. Today: slack 1:13 AM, ebb 1.6 kt 3:51 AM, slack 6:32 AM, flood 1.5 kt 9:39 AM, slack 1:11 PM, ebb 2.0 kt 3:56 PM, slack 7:17 PM, flood 1.3 kt 10:20 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 1.5 kt, Sun, Sep 27 at 9:39 AM. Strongest ebb 2.2 kt, Tue, Sep 29 at 5:04 PM.
| Time | Event | Speed | Toward |
|---|---|---|---|
| Sun, Sep 27 | |||
| 1:13 AM | Slack water | ||
| 3:51 AM | Maximum ebb | 1.6 kt | S (180°) |
| 6:32 AM | Slack water | ||
| 9:39 AM | Maximum flood | 1.5 kt | NNE (23°) |
| 1:11 PM | Slack water | ||
| 3:56 PM | Maximum ebb | 2.0 kt | S (180°) |
| 7:17 PM | Slack water | ||
| 10:20 PM | Maximum flood | 1.3 kt | NNE (23°) |
| Mon, Sep 28 | |||
| 2:06 AM | Slack water | ||
| 4:35 AM | Maximum ebb | 1.4 kt | S (180°) |
| 7:06 AM | Slack water | ||
| 10:13 AM | Maximum flood | 1.4 kt | NNE (23°) |
| 1:38 PM | Slack water | ||
| 4:28 PM | Maximum ebb | 2.1 kt | S (180°) |
| 7:57 PM | Slack water | ||
| 11:08 PM | Maximum flood | 1.3 kt | NNE (23°) |
| Tue, Sep 29 | |||
| 3:03 AM | Slack water | ||
| 5:21 AM | Maximum ebb | 1.3 kt | S (180°) |
| 7:43 AM | Slack water | ||
| 10:50 AM | Maximum flood | 1.3 kt | NNE (23°) |
| 2:10 PM | Slack water | ||
| 5:04 PM | Maximum ebb | 2.2 kt | S (180°) |
| 8:42 PM | Slack water | ||
| 11:59 PM | Maximum flood | 1.3 kt | NNE (23°) |
| Wed, Sep 30 | |||
| 4:03 AM | Slack water | ||
| 6:11 AM | Maximum ebb | 1.1 kt | S (180°) |
| 8:25 AM | Slack water | ||
| 11:30 AM | Maximum flood | 1.1 kt | NNE (23°) |
| 2:47 PM | Slack water | ||
| 5:45 PM | Maximum ebb | 2.2 kt | S (180°) |
| 9:34 PM | Slack water | ||
| Thu, Oct 1 | |||
| 12:55 AM | Maximum flood | 1.2 kt | NNE (23°) |
| 5:07 AM | Slack water | ||
| 7:08 AM | Maximum ebb | 0.8 kt | S (180°) |
| 9:12 AM | Slack water | ||
| 12:17 PM | Maximum flood | 1.0 kt | NNE (23°) |
| 3:29 PM | Slack water | ||
| 6:33 PM | Maximum ebb | 2.1 kt | S (180°) |
| 10:41 PM | Slack water | ||
| Fri, Oct 2 | |||
| 1:58 AM | Maximum flood | 1.0 kt | NNE (23°) |
| 6:21 AM | Slack water | ||
| 8:13 AM | Maximum ebb | 0.7 kt | S (180°) |
| 10:11 AM | Slack water | ||
| 1:15 PM | Maximum flood | 0.8 kt | NNE (23°) |
| 4:19 PM | Slack water | ||
| 7:33 PM | Maximum ebb | 1.9 kt | S (180°) |
| Sat, Oct 3 | |||
| 12:06 AM | Slack water | ||
| 3:05 AM | Maximum flood | 0.9 kt | NNE (23°) |
| 7:40 AM | Slack water | ||
| 9:27 AM | Maximum ebb | 0.6 kt | S (180°) |
| 11:29 AM | Slack water | ||
| 2:23 PM | Maximum flood | 0.7 kt | NNE (23°) |
| 5:22 PM | Slack water | ||
| 8:48 PM | Maximum ebb | 1.6 kt | S (180°) |
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. This is a subordinate station: NOAA predicts it from a nearby harmonic station by fixed corrections to the times and speeds of its slack waters and maxima, so the curve between them is less exact.
Nearby8
The closest other NOAA current stations, nearest first.
- Point Lobos, 1.3 nmi. SW ofSubordinate current station
- Mile Rock Lt., 0.2 nmi. NW ofSubordinate current station
- Point Bonita, 0.95 nm SSE ofHarmonic current station
- Point Lobos, 3.73 nmi. W ofSubordinate current station
- Point Lobos, 5.47 nmi. SW ofSubordinate current station
- Baker Beach (South Bay), 0.3 nmi. NW ofSubordinate current station
- Point Bonita Lt., 0.4 nmi. SSE ofSubordinate current station
- San Francisco Bay Entrance (Outside)Harmonic current station
More for this place
Sources
Tidal current predictions from NOAA’s Center for Operational Oceanographic Products and Services (CO-OPS), station PCT0206, bin 1: original at NOAA. Marine alerts from the National Weather Service.