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



SAN JOAQUIN RIVER - PATTERSON (PATC1)
Latitude: 37.49º NLongitude: 121.08º WElevation: 97 Feet
Location: Stanislaus County in CaliforniaBulletin Group: San JoaquinRiver Group: San Joaquin
Issuance Time: Jul 24, 2025 at 7:01 AM PDT
Action/Monitor: 48.0 FeetMinor Flood: 54.7 FeetModerate Flood: 57.3 FeetMajor Flood: 58.3 Feet
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 | PATC1
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Location Photographs

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Flood Impacts
58.3 FeetStages above 58.3 feet result in flooding outside the levee. Top of levee.
Official 7 Day National Weather Service Forecast   (CAZ019)
Tonight: Clear. Lows 53 to 59. Northwest winds up to 15 mph.

Friday: Sunny. Highs 80 to 88. Northwest winds up to 10 mph with gusts to around 20 mph.

Friday Night: Clear. Lows 53 to 59. Northwest winds up to 15 mph.

Saturday: Sunny. Highs 79 to 87. West winds up to 10 mph.

Saturday Night: Clear. Lows 54 to 60. Northwest winds up to 10 mph with gusts to around 20 mph.

Sunday: Sunny. Highs 84 to 90.

Sunday Night: Mostly clear. Lows 56 to 64.

Monday and Monday Night: Mostly clear. Highs 87 to 95. Lows 56 to 65.

Tuesday through Thursday: Clear. Highs 87 to 96. Lows 55 to 65.