Hazard Report Provided By forecast.weather.gov

Flood Watch
National Weather Service Sacramento CA
1250 PM PST Sun Dec 21 2025

.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.

CAZ013>019-063-066>069-230000-
/O.CON.KSTO.FA.A.0004.000000T0000Z-251227T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Shasta Lake Area / Northern Shasta County-Burney Basin / Eastern
Shasta County-Northern Sacramento Valley-Central Sacramento
Valley-Southern Sacramento Valley-Carquinez Strait and Delta-
Northern San Joaquin Valley-Mountains Southwestern Shasta County
to Western Colusa County-Northeast Foothills/Sacramento Valley-
Motherlode-Western Plumas County/Lassen Park-West Slope Northern
Sierra Nevada-
Including the cities of Marysville/Yuba City, Blue Canyon, Alder
Springs, Modesto, Fairfield/Suisun, Stockton, Chester, Paradise,
Grass Valley, Burney, Quincy, Chico, Oroville, Shasta Dam,
Redding, Red Bluff, Jackson, and Sacramento
1250 PM PST Sun Dec 21 2025

...FLOOD WATCH REMAINS IN EFFECT THROUGH FRIDAY AFTERNOON...

* 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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

You should monitor later forecasts and be alert for possible Flood
Warnings. Those living in areas prone to flooding should be prepared
to take action should flooding develop.

&&

$$

JS

Flood Advisory
National Weather Service Sacramento CA
1101 AM PST Mon Dec 22 2025

CAC003-005-017-057-061-230200-
/O.NEW.KSTO.FA.Y.0016.251222T1901Z-251223T0200Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Alpine CA-Amador CA-El Dorado CA-Nevada CA-Placer CA-
1101 AM PST Mon Dec 22 2025

...FLOOD ADVISORY IN EFFECT UNTIL 6 PM PST THIS EVENING...

* WHAT...Flooding caused by excessive rainfall is expected.

* WHERE...Portions of central and northern California, including the
  following counties, in central California, Placer. In northern
  California, Alpine, Amador, El Dorado and Nevada.

* WHEN...Until 600 PM PST Monday.

* IMPACTS...Minor flooding in low-lying and poor drainage areas.
  Water over roadways. Overflowing poor drainage areas.

* ADDITIONAL DETAILS...
  - At 1101 AM PST, Doppler radar indicated heavy rain. Minor
    flooding is ongoing or expected to begin shortly in the
    advisory area.
  - Some locations that will experience flooding include...
    Auburn, Grass Valley, Placerville, Jackson, Big Bend Summit,
    Baxter, Blue Canyon, Cisco, Cameron Park, Soda Springs,
    Kirkwood, Carson Pass, Lake Of The Pines, Lake Wildwood,
    Colfax, Chiquita Lake, Pollock Pines, Georgetown, Camino and
    Fresh Pond.
  - http://www.weather.gov/safety/flood

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don`t drown when encountering flooded roads. Most flood
deaths occur in vehicles.

&&

LAT...LON 3933 12115 3944 12077 3948 12068 3943 12063
      3943 12037 3937 12035 3935 12033 3919 12025
      3903 12020 3885 12015 3881 12003 3875 12000
      3870 11998 3867 11995 3856 12017 3842 12062
      3831 12079 3921 12126


$$

SR

URGENT - WINTER WEATHER MESSAGE
National Weather Service Sacramento CA
1015 AM PST Mon Dec 22 2025

CAZ068-069-240000-
/O.UPG.KSTO.WS.A.0009.251224T0600Z-251226T1800Z/
/O.NEW.KSTO.WS.W.0011.251224T0600Z-251227T0600Z/
Western Plumas County/Lassen Park-West Slope Northern Sierra
Nevada-
Including the cities of Quincy, Blue Canyon, and Chester
1015 AM PST Mon Dec 22 2025

...WINTER STORM WARNING IN EFFECT FROM 10 PM TUESDAY TO 10 PM PST
FRIDAY...

* WHAT...Heavy snow expected. Accumulations up to a foot between
  4500 to 5500 feet. 4 to 8 feet, with locally higher amounts above
  5500 feet. Wind gusts up to 60 mph.

* WHERE...West Slope Northern Sierra Nevada and Western Plumas
  County/Lassen Park Counties.

* WHEN...From 10 PM Tuesday to 10 PM PST Friday.

* IMPACTS...Dangerous travel conditions with chain controls and road
  closures. Localized tree damage, power outages, and low visibility
  due to the combination of heavy wet snow and strong winds.

* ADDITIONAL DETAILS...Snow accumulations will remain near or above
  pass level through Tuesday, then drop to around 4500 to 5500 feet
  during the day Wednesday through Friday. Snowfall rates of 1 to 2
  inches per hour at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Check the latest road conditions from Caltrans online at
quickmap.dot.ca.gov or dial 5 1 1.

&&

$$

Hazard Report Provided By forecast.weather.gov