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Marine Weather and Tide Forecast for Port Costa, CA

May 12, 2025 8:21 AM PDT (15:21 UTC)
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Sunrise 5:58 AM   Sunset 8:11 PM
Moonrise 7:43 PM   Moonset 4:39 AM 
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NOTE: Some of the data on this page has not been verified and should be used with that in mind. It may and occasionally will, be wrong. The tide reports are by xtide and are NOT FOR NAVIGATION.

Marine Forecasts
   
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NOTE: Zones were updated 3/20/2025
PZZ530 San Pablo Bay, Suisun Bay, The West Delta And The San Francisco Bay North Of The Bay Bridge- 240 Am Pdt Mon May 12 2025

Rest of tonight - SW wind 5 to 10 kt. Waves around 2 ft or less. A slight chance of rain, then a chance of rain late.

Mon - SW wind 10 to 15 kt. Waves around 2 ft or less. A chance of rain in the morning.

Mon night - W wind 10 to 15 kt. Waves around 2 ft or less.

Tue - NW wind 5 to 10 kt, becoming W 10 to 15 kt in the afternoon. Waves around 2 ft or less.

Tue night - W wind 15 to 20 kt, becoming sw 10 to 15 kt after midnight. Waves around 2 ft or less.

Wed - SW wind 5 to 10 kt, rising to 10 to 15 kt in the afternoon. Waves around 2 ft or less.

Wed night - W wind 10 to 15 kt, becoming sw 5 to 10 kt after midnight. Waves around 2 ft or less.

Thu - SW wind 5 to 10 kt. Waves around 2 ft or less.

Thu night - SW wind 5 to 10 kt. Waves around 2 ft or less.

Fri - SW wind 5 to 10 kt. Waves around 2 ft or less.

Fri night - SW wind 10 to 15 kt. Waves around 2 ft or less.
PZZ500 240 Am Pdt Mon May 12 2025

Synopsis for the central california coast and bays including the Monterey bay - Greater farallones - .and cordell bank national marine sanctuaries - .
a cold front will bring light rainfall and fresh westerly breezes today. There's around a 10% chance for Thunderstorms today into tomorrow which would pose the threats of lightning, small hail, and locally heavy rainfall and gusty winds. Hazardous marine conditions are expected through the week with rough seas and gale force gusts expected.

7 Day Forecast for Marine Location Near Port Costa, CA
   
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Tide / Current for Suisun Point, Carquinez Strait, California
  
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Suisun Point
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Mon -- 01:21 AM PDT     5.44 feet High Tide
Mon -- 05:39 AM PDT     Moonset
Mon -- 06:00 AM PDT     Sunrise
Mon -- 09:04 AM PDT     -0.42 feet Low Tide
Mon -- 09:58 AM PDT     Full Moon
Mon -- 03:28 PM PDT     3.83 feet High Tide
Mon -- 07:55 PM PDT     2.22 feet Low Tide
Mon -- 08:09 PM PDT     Sunset
Mon -- 08:42 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
        
  Sorry, Suisun Point, Carquinez Strait, California does not exist in database. Press Edit above and select a valid nearby location.

Suisun Point, Carquinez Strait, California, Tide feet
12
am
5
1
am
5.4
2
am
5.3
3
am
4.8
4
am
3.8
5
am
2.6
6
am
1.5
7
am
0.6
8
am
-0.1
9
am
-0.4
10
am
-0.2
11
am
0.6
12
pm
1.6
1
pm
2.6
2
pm
3.3
3
pm
3.8
4
pm
3.8
5
pm
3.3
6
pm
2.8
7
pm
2.4
8
pm
2.2
9
pm
2.4
10
pm
3
11
pm
4

Tide / Current for Carquinez Strait, California Current
  
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Carquinez Strait
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Mon -- 03:08 AM PDT     -0.00 knots Slack
Mon -- 05:39 AM PDT     Moonset
Mon -- 06:00 AM PDT     Sunrise
Mon -- 07:15 AM PDT     -2.80 knots Max Ebb
Mon -- 09:58 AM PDT     Full Moon
Mon -- 11:11 AM PDT     0.00 knots Slack
Mon -- 02:14 PM PDT     1.67 knots Max Flood
Mon -- 05:16 PM PDT     -0.00 knots Slack
Mon -- 07:29 PM PDT     -0.84 knots Max Ebb
Mon -- 08:10 PM PDT     Sunset
Mon -- 08:42 PM PDT     Moonrise
Mon -- 09:33 PM PDT     0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
        
  Sorry, Carquinez Strait, California Current does not exist in database. Press Edit above and select a valid nearby location.

Carquinez Strait, California Current, knots
12
am
2.2
1
am
1.9
2
am
1.2
3
am
0.2
4
am
-1
5
am
-2
6
am
-2.6
7
am
-2.8
8
am
-2.7
9
am
-2.3
10
am
-1.4
11
am
-0.2
12
pm
0.8
1
pm
1.4
2
pm
1.7
3
pm
1.6
4
pm
1
5
pm
0.2
6
pm
-0.5
7
pm
-0.8
8
pm
-0.8
9
pm
-0.4
10
pm
0.4
11
pm
1.4

Area Discussion for Sacramento, CA
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NOTE: mouseover dotted underlined text for definition
FXUS66 KSTO 112039 AFDSTO

Area Forecast Discussion National Weather Service Sacramento CA 139 PM PDT Sun May 11 2025

For additional details on weather and expected impacts over the next 7 days, please visit weather.gov/sto/briefing.

Discussion

Synopsis
Gusty southerly winds and low relative humidity bring elevated fire weather conditions across the Sacramento Valley today. A weather system will bring chances for light showers, mountain snow showers and isolated thunderstorms Monday through Tuesday. Drier weather will follow with seasonable temperatures and occasionally breezy winds.

Key Messages

* Today: -Gusty southerly winds develop today ahead of an approaching weather system -Wind Advisory is in effect through 1 AM Monday for the northeast foothills and the northern/central Sacramento Valley, strongest winds along and east of I-5 mainly from Chico northward with gusts of 40 to 50 mph -Elevated fire weather conditions today as gusty southerly winds and low relative humidity overlap in the Sacramento Valley

* Monday - Tuesday: -Light showers and mountain snow showers expected as the weather system moves through -50-80% probability of rain > 0.25" mainly across northern Sacramento Valley, northern Sierra north of Hwy 50, and adjacent foothills -15-30% probability of isolated thunderstorms Monday and Tuesday, highest across north/central Sacramento Valley, foothills and mountains -20-50% probability of 2" snow along the Sierra above 5500 feet, 70-90% probability in the southern Cascades/Lassen Peak

* Mid to Late Week: -Dry weather, seasonable temperatures and occasionally breezy winds

Changes from previous forecast
-Potential for elevated fire weather conditions in the Valley from increased north to east flow late next weekend

AVIATION
VFR conditions across all TAF sites next 24 hours. Gusty southerly winds 15-25 kts in the lower elevations with gusts 20-40 kts, and 30-50 kts gusts over the Sierra out of the southwest until 08z Monday, and again after 12z Monday with gusts up to 25-30 kts in the Valley and up to 30-40 kts over the mountains.
There is a 10-30% chance of isolated thunderstorms across the northern Sacramento Valley, foothills, and mountains from 18z Monday - 03z Tuesday, with brief periods of MVFR conditions. Gusty and erratic winds near thunderstorms.

STO WATCHES/WARNINGS/ADVISORIES
Wind Advisory until 1 AM PDT Monday for Central Sacramento Valley-Northeast Foothills/Sacramento Valley-Northern Sacramento Valley.


Weather Reporting Stations
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Stations Dist Age Wind AirWater WavesinHgDewPt
MZXC1 - 9415102 - Martinez-Amorco CA 1 mi51 minSW 6G8 54°F 64°F29.9154°F
UPBC1 2 mi51 minW 8G9.9
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 6 mi51 minSW 8.9G14 56°F 29.90
PCOC1 - 9415144 - Port Chicago, CA 6 mi51 minS 2.9G7 53°F 29.91
PPXC1 - 9414847 - Richmond (Point Potrero), CA 14 mi51 minSW 8G12 55°F 29.93
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 14 mi51 minWSW 9.9G15 55°F 29.91
RCMC1 - 9414863 - Richmond, CA 16 mi51 minSSW 4.1G7 55°F 60°F29.91
LNDC1 18 mi51 minWSW 4.1G5.1 54°F 29.92
OKXC1 - 9414776 - Oakland (Berth 34), CA 18 mi57 minW 5.1G8 53°F 29.92
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 18 mi51 minWSW 7G9.9
TIBC1 - Tiburon Pier, San Francisco Bay, CA 18 mi127 minS 2.9 53°F 29.9149°F
OBXC1 19 mi51 min 54°F 53°F
AAMC1 - 9414750 - Alameda, CA 20 mi51 minSW 2.9G6 54°F 65°F29.93
PXSC1 20 mi51 min 54°F 53°F
PXOC1 - 9414311 - San Francisco (Pier 1), CA 21 mi51 minSSW 4.1G8 53°F 29.89
FTPC1 - 9414290 - San Francisco, CA 23 mi51 minS 4.1G5.1 53°F 29.92
46237 - San Francisco Bar, CA (142) 31 mi51 min 54°F 55°F4 ft
RTYC1 - 9414523 - Redwood City, CA 36 mi51 minWNW 2.9G8.9 54°F 68°F29.93
PRYC1 - 9415020 - Point Reyes, CA 44 mi51 min 29.90


Wind History for Martinez-Amorco Pier, CA
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Airport Reports
   
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AirportDistAgeWind ktVisSkyWeatherAirDewPtRHinHg
KCCR BUCHANAN FIELD,CA 6 sm21 minSSE 082 smOvercast Lt Rain Mist 54°F54°F100%29.92
KAPC NAPA COUNTY,CA 14 sm27 minSSW 0610 smOvercast54°F52°F94%29.90
KSUU TRAVIS AFB,CA 20 sm26 minS 0810 smOvercast Lt Rain 54°F50°F88%29.89
KOAK METROPOLITAN OAKLAND INTL,CA 22 sm28 minW 0410 smMostly Cloudy54°F52°F94%29.94
KDVO GNOSS FIELD,CA 23 sm26 minW 11G1710 smPartly Cloudy55°F55°F100%29.90

Weather Map
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GEOS Local Image of Central West Coast  
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Sacramento, CA,





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