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



SAN LORENZO CREEK - HAYWARD (LRZC1)
Latitude: 37.69º NLongitude: 122.06º WElevation: 133 Feet
Location: Alameda County in CaliforniaBulletin Group: Central CoastRiver Group: South Bay
Issuance Time: Dec 08, 2025 at 7:57 AM PST
Action/Monitor: 20.85 FeetMinor Flood: 24.6 FeetModerate Flood: 29.64 FeetMajor Flood: 33.0 Feet
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  |  LRZC1

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Official 7 Day National Weather Service Forecast   (CAZ508)
Today: Partly cloudy in the morning then becoming sunny. Areas of fog in the morning. Highs in the lower 60s. North winds 5 to 10 mph.

Tonight: Mostly clear in the evening then becoming partly cloudy. Patchy fog after midnight. Lows in the mid 40s. North winds 5 to 10 mph.

Tuesday: Partly cloudy in the morning then becoming sunny. Patchy fog in the morning. Highs in the lower 60s. North winds 5 to 10 mph.

Tuesday Night: Mostly clear except patchy fog after midnight. Lows in the upper 40s. North winds around 5 mph.

Wednesday: Sunny. Patchy fog in the morning. Highs in the mid 60s. North winds 5 to 10 mph.

Wednesday Night: Mostly clear. Lows in the upper 40s.

Thursday through Saturday: Mostly clear. Highs in the 60s. Lows in the upper 40s.

Saturday Night: Partly cloudy in the evening then becoming mostly cloudy. Patchy fog. Lows in the upper 40s.

Sunday: Mostly cloudy in the morning then becoming partly cloudy. Patchy fog. Highs in the lower to mid 60s.