EVENT: Flood Watch
Severity: Severe
Certainty: Possible
ONSET: 12-22-25 @ 01:30 pm
EXPIRES: 12-23-25 @ 04:00 pm
* 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 in northern California, but do anticipate enhanced
runoff in/below scars.
- http://www.weather.gov/safety/flood
INSTRUCTIONS:
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.

EVENT: Winter Storm Warning
Severity: Severe
Certainty: Likely
ONSET: 12-23-25 @ 10:00 pm
EXPIRES: 12-23-25 @ 04:00 pm
* 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.
INSTRUCTIONS:
Check the latest road conditions from Caltrans online at
quickmap.dot.ca.gov or dial 5 1 1.