National Weather Service California Nevada River Forecast Center Department of Commerce National Oceanic and Atmospheric Administration National Weather Service

*** IMPORTANT ***  Week of June 16 - Website Data Outage - Due to a major computer upgrade the week of June 16, nearly all data on the CNRFC web site will not be updated. We anticipate the down time to be approximately 4 days. The latest deterministic hydrologic forecasts for official forecast points will continue to be available at the National Water Prediction Service during this time.


SAN ANTONIO CREEK - SAN ANTONIO RESERVOIR (ANOC1)
Latitude: 37.57º NLongitude: 121.85º WElevation: 468 Feet
Location: Alameda County in CaliforniaBulletin Group: Central CoastRiver Group: South Bay
Issuance Time: Jun 07, 2025 at 8:35 AM PDT
Action/Monitor: N/A Minor Flood: N/A Moderate Flood: N/A Major Flood: N/A
Please Note:Ensemble forecasts produced by CNRFC only consider meteorological uncertainty and do not account for hydrologic uncertainty.
Short-Range Peak Exceedance Plot   Product Info.   CSV Ensemble Files (Data in kcfs): Forecast Group | ANOC1
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Official 7 Day National Weather Service Forecast   (CAZ510)
rest of Today: Sunny. Highs in the 80s. West winds 10 to 20 mph.

Tonight: Mostly clear. Lows in the upper 50s. West winds 10 to 20 mph.

Sunday: Sunny. Highs in the mid 80s. West winds 10 to 20 mph.

Sunday Night: Mostly clear. Lows in the upper 50s. Southwest winds 10 to 20 mph.

Monday: Partly cloudy in the morning then becoming sunny. Highs in the mid 80s to lower 90s. Southwest winds 5 to 10 mph and Becoming west 10 to 20 mph in the afternoon.

Monday Night: Clear in the evening then becoming partly cloudy. Lows in the upper 50s.

Tuesday through Wednesday: Mostly clear. Highs in the 80s. Lows in the mid 50s.

Wednesday Night through Friday: Clear. Lows in the lower to mid 50s. Highs in the upper 70s to mid 80s.