Flood Advisory issued December 21 at 5:54AM PST until December 21 at 5:45PM PST by NWS Sacramento CA
Issue date: 2025-12-21T13:54+00:00
* WHAT...Flooding caused by excessive rainfall is expected. * WHERE...A portion of northern California, including the following counties, Butte, Nevada, Plumas, Sierra, Tehama and Yuba. * WHEN...Until 545 PM PST Sunday. * IMPACTS...Minor flooding in low-lying and poor drainage areas. Rises in small streams and normally dry arroyos. Ponding of water in urban or other areas is occurring or is imminent. * ADDITIONAL DETAILS... - At 550 AM PST, local law enforcement reported mud and rock slides within the advisory area. Moderate to heavy rain is continuing to fall over the area and as a result minor flooding is ongoing or expected to begin shortly. Between 1 and 3.5 inches of rain have fallen. - Additional rainfall amounts of 3 to 6 inches are expected over the area. This additional rain will result in minor flooding, potential mud and rock slides, and rises on small streams. - Some locations that will experience flooding include... Chico, Paradise, Oroville, Grass Valley, Brush Creek Rs, Pulga, Palermo, Downieville, Lake Wildwood, Feather Falls, Forbestown, Brownsville, Challenge-Brownsville, Challenge, Hurleton, American House, Frenchtown, Dobbins, Oroville Dam and Oroville East. - http://www.weather.gov/safety/flood
Winter Storm Watch issued December 21 at 2:39AM PST until December 26 at 10:00AM PST by NWS Reno NV
Issue date: 2025-12-21T10:39+00:00
* WHAT...Heavy snow. Snow accumulations of 1 to 3 feet above 5,500 feet. Winds gusting to 60 mph on the ridgetops. * WHERE...Lassen-Eastern Plumas-Eastern Sierra Counties. * WHEN...From Tuesday evening through Friday morning. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the Wednesday morning and evening commutes.
Winter Storm Watch issued December 20 at 4:13PM PST until December 26 at 10:00AM PST by NWS Sacramento CA
Issue date: 2025-12-21T00:13+00:00
* WHAT...Heavy snow possible. Accumulation amounts uncertain at this time but may range from around a foot at 5500 feet and up 4 feet at highest elevations. Winds could gust as high as 45 mph. * WHERE...West Slope Northern Sierra Nevada and Western Plumas County/Lassen Park including Interstate 80 and Highway 50. * WHEN...From Tuesday evening through Friday morning. * IMPACTS...Dangerous travel conditions with chain controls and road closures possible. Low visibility due to combination of wind and heavy snow. * ADDITIONAL DETAILS...Snow accumulations will remain near or above pass level through Tuesday, then drop to around 5500 feet during the day Wednesday.
Wind Advisory issued December 20 at 1:39PM PST until December 22 at 4:00AM PST by NWS Reno NV
Issue date: 2025-12-20T21:39+00:00
* WHAT...Southwest winds 25 to 35 mph with gusts up to 55 mph. Wind prone locations along US-395 may see gusts up to 65 mph. * WHERE...In California, Lassen-Eastern Plumas-Eastern Sierra Counties. In Nevada, Mineral and Southern Lyon Counties. * WHEN...From 4 AM Sunday to 4 AM PST Monday. * IMPACTS...Gusty winds will blow around unsecured objects and there may be areas of blowing dust. Tree limbs could be blown down and a few power outages may result.
Flood Watch issued December 20 at 1:03PM PST until December 26 at 4:00PM PST by NWS Sacramento CA
Issue date: 2025-12-20T21:03+00:00
A series of warm atmospheric rivers will bring moderate to heavy rain to the Valley, foothills, and mountains the week of Christmas. The prolonged period of rain will bring the risk of flooding to the Sacramento Valley, northern San Joaquin Valley, northern Sierra Nevada and adjacent foothills, as well as the Coastal Range. * WHAT...Flooding caused by excessive rainfall continues to be possible. * WHERE...A portion of northern California, including the following areas, the Sacramento Valley, northern San Joaquin Valley, Delta region, Sierra Nevada and adjacent foothills, and Coastal Range. * WHEN...Through Friday afternoon. * IMPACTS...Excessive runoff will result in rises along area rivers, creeks, streams. Small streams and creeks may rise out of their banks. Flooding may occur in low-lying, poor drainage, and urban areas. Mudslides and rockslides may occur in mountain and foothill areas. * ADDITIONAL DETAILS... - Periods of moderate to heavy rain are forecast the week of Christmas. Debris flows are not expected over recent burn scars, but do anticipate enhanced runoff in/below scars. - http://www.weather.gov/safety/flood
Flood Watch issued December 19 at 12:59PM PST until December 22 at 4:00PM PST by NWS Reno NV
Issue date: 2025-12-19T20:59+00:00
Moderate to heavy rain with high rain/snow elevation (8,000 feet and higher) Saturday evening through Sunday will lead to significant rises of rivers, creeks and streams with the potential for minor flooding. * WHAT...Flooding caused by excessive rainfall is possible. * WHERE...Portions of California, including the Greater Lake Tahoe Area and Lassen-Eastern Plumas-Eastern Sierra Counties, including the Susan River near Susanville and the West Fork of the Carson near Woodfords. Portions of western Nevada, including the Greater Lake Tahoe Area. * WHEN...From early Sunday morning through Monday afternoon. * IMPACTS...Excessive runoff will result in significant rises of rivers, creeks, and streams. Small streams and creeks may overflow their banks. Flooding is most likely in urban, low lying, and poor drainage areas. Rockfall is also possible in areas of steep terrain. No mainstem river flooding is currently forecast, but the Susan River near Susanville and the West Fork of the Carson near Woodfords are expected to exceed action stage and minor flooding is possible in these areas. The Susan River near Susanville may experience additional rises mid next week. * ADDITIONAL DETAILS... - Enhanced runoff and sediment transport are likely below recent burn areas, but debris flows are not expected. Look for river forecast updates at CNRFC.NOAA.GOV - http://www.weather.gov/safety/flood
