Marine Weather and Tide Forecast for Knightsen, CA
 | Sunrise 6:37 AM Sunset 7:38 PM Moonrise 2:00 AM Moonset 11:31 AM |
Marine Forecasts
NOTE: Zones were updated 3/20/2025. If your report is out of date, please click Edit
PZZ530 San Pablo Bay, Suisun Bay, The West Delta And The San Francisco Bay North Of The Bay Bridge- 857 Pm Pdt Thu Apr 9 2026
Tonight - SW wind 5 to 10 kt. A slight chance of showers late this evening. A chance of showers after midnight.
Fri - S wind 5 to 10 kt, becoming sw 10 to 15 kt in the afternoon. A chance of tstms. Showers.
Fri night - SW wind 10 to 15 kt, becoming S 5 to 10 kt after midnight. A slight chance of tstms in the evening. Showers likely.
Sat - S wind 15 to 20 kt, rising to 20 to 25 kt in the afternoon. Showers likely in the morning, then showers with a chance of tstms in the afternoon.
Sat night - SW wind 15 to 20 kt, easing to 10 to 15 kt after midnight. A slight chance of tstms. Showers.
Sun - SW wind 10 to 15 kt. Showers. A chance of tstms in the afternoon.
Sun night - SW wind 5 to 10 kt. A chance of rain in the evening.
Mon - NW wind 5 to 10 kt.
Mon night - W wind 5 to 10 kt.
Tue - W wind 5 to 10 kt.
Tue night - W wind 5 to 10 kt.
winds and waves higher in and near tstms.
winds and waves higher in and near tstms.
PZZ500 857 Pm Pdt Thu Apr 9 2026
Synopsis for the central california coast and bays including the Monterey bay - Greater farallones - .and cordell bank national marine sanctuaries - .
unsettled weather is expected Friday through the weekend, including increasing winds, building seas, and a few rounds of Thunderstorms. Thunderstorms will be capable of producing frequent lightning, gusty and erratic winds, localized heavy rain, small hail, and waterspouts. Gentle to moderate south to southwest winds will become fresh to strong by Saturday, with occasional near gale force gusts. Winds become westerly late Saturday and northerly by late Sunday as the low pressure system passes near the northern waters. Fresh north winds last through midweek.
unsettled weather is expected Friday through the weekend, including increasing winds, building seas, and a few rounds of Thunderstorms. Thunderstorms will be capable of producing frequent lightning, gusty and erratic winds, localized heavy rain, small hail, and waterspouts. Gentle to moderate south to southwest winds will become fresh to strong by Saturday, with occasional near gale force gusts. Winds become westerly late Saturday and northerly by late Sunday as the low pressure system passes near the northern waters. Fresh north winds last through midweek.
7 Day Forecast for Marine Location Near Knightsen, CA
NEW! Add second zone forecast
| Orwood Click for Map Fri -- 02:51 AM PDT 2.69 feet High Tide Fri -- 02:59 AM PDT Moonrise Fri -- 06:37 AM PDT Sunrise Fri -- 07:15 AM PDT 1.67 feet Low Tide Fri -- 12:12 PM PDT 3.05 feet High Tide Fri -- 12:30 PM PDT Moonset Fri -- 07:37 PM PDT Sunset Fri -- 08:54 PM PDT 0.18 feet Low Tide Tide / Current data from XTide NOT FOR NAVIGATION |
Orwood, Old River, San Joaquin River, California, Tide feet
| 12 am |
| 1.8 |
| 1 am |
| 2.2 |
| 2 am |
| 2.6 |
| 3 am |
| 2.7 |
| 4 am |
| 2.5 |
| 5 am |
| 2.1 |
| 6 am |
| 1.8 |
| 7 am |
| 1.7 |
| 8 am |
| 1.7 |
| 9 am |
| 2 |
| 10 am |
| 2.5 |
| 11 am |
| 2.9 |
| 12 pm |
| 3 |
| 1 pm |
| 3 |
| 2 pm |
| 2.8 |
| 3 pm |
| 2.4 |
| 4 pm |
| 1.9 |
| 5 pm |
| 1.3 |
| 6 pm |
| 0.9 |
| 7 pm |
| 0.5 |
| 8 pm |
| 0.3 |
| 9 pm |
| 0.2 |
| 10 pm |
| 0.3 |
| 11 pm |
| 0.7 |
| Antioch Click for Map Flood direction 96 true Ebb direction 277 true Fri -- 01:57 AM PDT -0.00 knots Slack Fri -- 03:00 AM PDT Moonrise Fri -- 04:07 AM PDT -0.39 knots Max Ebb Fri -- 05:58 AM PDT 0.00 knots Slack Fri -- 06:38 AM PDT Sunrise Fri -- 08:32 AM PDT 0.73 knots Max Flood Fri -- 11:32 AM PDT -0.00 knots Slack Fri -- 12:31 PM PDT Moonset Fri -- 05:05 PM PDT -1.08 knots Max Ebb Fri -- 07:38 PM PDT Sunset Fri -- 08:25 PM PDT 0.00 knots Slack Fri -- 11:39 PM PDT 1.15 knots Max Flood Tide / Current data from XTide NOT FOR NAVIGATION |
Antioch, Route 160 bridge (depth 7 ft), San Joaquin River, California Current, knots
| 12 am |
| 1 |
| 1 am |
| 0.5 |
| 2 am |
| -0 |
| 3 am |
| -0.3 |
| 4 am |
| -0.4 |
| 5 am |
| -0.3 |
| 6 am |
| 0 |
| 7 am |
| 0.4 |
| 8 am |
| 0.7 |
| 9 am |
| 0.7 |
| 10 am |
| 0.5 |
| 11 am |
| 0.2 |
| 12 pm |
| -0.2 |
| 1 pm |
| -0.6 |
| 2 pm |
| -0.9 |
| 3 pm |
| -1 |
| 4 pm |
| -1 |
| 5 pm |
| -1.1 |
| 6 pm |
| -1 |
| 7 pm |
| -0.7 |
| 8 pm |
| -0.2 |
| 9 pm |
| 0.3 |
| 10 pm |
| 0.8 |
| 11 pm |
| 1.1 |
FXUS66 KSTO 092008 AFDSTO
Area Forecast Discussion National Weather Service Sacramento CA 108 PM PDT Thu Apr 9 2026
For additional details on weather and expected impacts over the next 7 days, please visit weather.gov/sto/briefing.
KEY MESSAGES
- Cooler temperatures and active weather today through the weekend with rain, strong to severe thunderstorms, gusty winds, and significant mountain snow
- Winter Storm Warning in effect for the Sierra and Southern Cascades Friday evening through Sunday evening
DISCUSSION
Today through the Weekend
Current radar and satellite imagery show showers and thunderstorms starting to develop across far northern California, including the higher terrain of the Coast Range, Shasta County and southern Cascades. A pattern change is bringing cooler and wetter weather to the region today through the weekend. Temperatures are currently trending approximately 5 to 8 degrees cooler than this time yesterday. Forecast highs will be in the 50s to 60s in the mountains and 60s to around 80 in the Valley and foothills today, continuing to cool with highs in the 30s to 60s by the weekend.
Scattered showers and thunderstorms will impact the area through the weekend as well. Latest forecast precipitation amounts have trended slightly higher than the previous forecast. Slick roads and minor travel delays can be expected from rain. The latest probability of thunder from the National Blend of Models indicated a 45-65% chance for today and Friday for thunderstorms across basically our entire forecast area. High resolution guidance depicts sufficient CAPE and shear values that could lead to severe hail (1.00+ inch), and also weak tornadoes or funnel clouds.
These impacts will be in addition to the threat for brief heavy rain, gusty winds and lightning. Thunderstorm chances will also linger into Saturday and Sunday. When thunder roars, go indoors!
The snow forecast has also trended slightly higher since the previous forecast. The Winter Storm Watch has been upgraded to a Winter Storm Warning from Friday evening through Sunday evening for elevations above 4500 feet. Snow levels will initially be at pass level or above on Friday, and will lower below the passes over the weekend. Heaviest snow rates and lowest snow levels are expected to be from Saturday afternoon through Sunday where major impacts to mountain travel are anticipated. Mountain travel is discouraged this weekend while the Warning is in effect. Gusty southerly winds are also forecast, with the strongest on Saturday.
The north/central Sacramento Valley, northeast foothills and Sierra Crest will see the strongest winds. We will continue to montior the trends in the forecast to see if a product will be needed for the winds.
Early Next Week
There may be some lingering showers mainly in the mountains on Monday. Otherwise drier and warmer weather is projected to return early to mid next week. Forecast highs will generally be in the 60s to 70s in the Valley and foothills.
AVIATION
Primarily VFR conditions over the next 24 hours, except within thunderstorms through 09z Friday, and again between 18z Friday and 09z Saturday, which will bring potential for brief MVFR/IFR conditions in any heavy rainfall. Surface winds generally at or below 12 kt in the Valley through 12z Saturday, before southerly wind speeds begin to increase across interior NorCal and continue through late Saturday; gusts up to 35-45 mph in the Valley and up to 50 mph in the mountains at times. Gusty and erratic winds will occur near any thunderstorms as well.
STO WATCHES/WARNINGS/ADVISORIES
Winter Storm Warning from 5 PM Friday to 11 PM PDT Sunday for West Slope Northern Sierra Nevada-Western Plumas County/Lassen Park.
Area Forecast Discussion National Weather Service Sacramento CA 108 PM PDT Thu Apr 9 2026
For additional details on weather and expected impacts over the next 7 days, please visit weather.gov/sto/briefing.
KEY MESSAGES
- Cooler temperatures and active weather today through the weekend with rain, strong to severe thunderstorms, gusty winds, and significant mountain snow
- Winter Storm Warning in effect for the Sierra and Southern Cascades Friday evening through Sunday evening
DISCUSSION
Today through the Weekend
Current radar and satellite imagery show showers and thunderstorms starting to develop across far northern California, including the higher terrain of the Coast Range, Shasta County and southern Cascades. A pattern change is bringing cooler and wetter weather to the region today through the weekend. Temperatures are currently trending approximately 5 to 8 degrees cooler than this time yesterday. Forecast highs will be in the 50s to 60s in the mountains and 60s to around 80 in the Valley and foothills today, continuing to cool with highs in the 30s to 60s by the weekend.
Scattered showers and thunderstorms will impact the area through the weekend as well. Latest forecast precipitation amounts have trended slightly higher than the previous forecast. Slick roads and minor travel delays can be expected from rain. The latest probability of thunder from the National Blend of Models indicated a 45-65% chance for today and Friday for thunderstorms across basically our entire forecast area. High resolution guidance depicts sufficient CAPE and shear values that could lead to severe hail (1.00+ inch), and also weak tornadoes or funnel clouds.
These impacts will be in addition to the threat for brief heavy rain, gusty winds and lightning. Thunderstorm chances will also linger into Saturday and Sunday. When thunder roars, go indoors!
The snow forecast has also trended slightly higher since the previous forecast. The Winter Storm Watch has been upgraded to a Winter Storm Warning from Friday evening through Sunday evening for elevations above 4500 feet. Snow levels will initially be at pass level or above on Friday, and will lower below the passes over the weekend. Heaviest snow rates and lowest snow levels are expected to be from Saturday afternoon through Sunday where major impacts to mountain travel are anticipated. Mountain travel is discouraged this weekend while the Warning is in effect. Gusty southerly winds are also forecast, with the strongest on Saturday.
The north/central Sacramento Valley, northeast foothills and Sierra Crest will see the strongest winds. We will continue to montior the trends in the forecast to see if a product will be needed for the winds.
Early Next Week
There may be some lingering showers mainly in the mountains on Monday. Otherwise drier and warmer weather is projected to return early to mid next week. Forecast highs will generally be in the 60s to 70s in the Valley and foothills.
AVIATION
Primarily VFR conditions over the next 24 hours, except within thunderstorms through 09z Friday, and again between 18z Friday and 09z Saturday, which will bring potential for brief MVFR/IFR conditions in any heavy rainfall. Surface winds generally at or below 12 kt in the Valley through 12z Saturday, before southerly wind speeds begin to increase across interior NorCal and continue through late Saturday; gusts up to 35-45 mph in the Valley and up to 50 mph in the mountains at times. Gusty and erratic winds will occur near any thunderstorms as well.
STO WATCHES/WARNINGS/ADVISORIES
Winter Storm Warning from 5 PM Friday to 11 PM PDT Sunday for West Slope Northern Sierra Nevada-Western Plumas County/Lassen Park.
Wind History for Port Chicago, CA
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Link to 1 hour of 5 minute data for KSCK
Terminal Aerodrome Forecast (TAF) for KSCK
Wind History Graph: SCK
(wind in knots)
GEOS Local Image of Central West Coast
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