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

*** IMPORTANT ***  Week of June 22 - Website Data Outage - Most data flow has been restored to the CNRFC web site. A few products may remain outdated while we continue to restore systems following a major computer upgrade. Thank you for your patience.


ARROYO MOCHO - PLEASANTON (AYMC1)
Latitude: 37.69º NLongitude: 121.87º WElevation: 335 Feet
Location: Alameda County in CaliforniaBulletin Group: Central CoastRiver Group: South Bay
Issuance Time: Jun 22, 2025 at 9:05 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.
Threshold Exceedance Plot                  Product Information        CSV Ensemble Files (Data in kcfs):  Forecast Group  |  AYMC1

Show:





What information is considered in this forecast?
Verification / Historical Plots
<-- Previous Forecast  Forecast Date:   Forecast Cycle:  

Location Photographs

ESRI™ Locator Map
Official 7 Day National Weather Service Forecast   (CAZ510)
Today: Sunny. Highs in the upper 80s. West winds 5 to 15 mph.

Tonight: Mostly clear. Lows in the mid 50s. Southwest winds 5 to 15 mph.

Tuesday: Sunny. Highs in the lower to mid 80s. Southwest winds 5 to 15 mph.

Tuesday Night: Mostly clear. Lows in the mid 50s. Southwest winds 5 to 15 mph.

Wednesday: Partly cloudy in the morning then becoming sunny. Highs in the mid 80s to lower 90s. West winds 5 to 10 mph.

Wednesday Night: Clear. Lows in the mid 50s.

Thursday and Thursday Night: Clear. Highs in the mid 80s to lower 90s. Lows in the mid to upper 50s.

Friday: Sunny. Highs in the mid to upper 80s.

Friday Night through Saturday Night: Clear. Lows in the upper 50s. Highs in the mid 80s to lower 90s.

Sunday: Sunny. Highs in the mid 80s to lower 90s.