* 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 this evening 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.

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

* WHAT...Heavy snow. Snow accumulations of 1 to 3 feet above 5500 to
6000 feet and 1 to 6 inches below 5500 feet. Winds gusting as high
as 70 mph along the highest ridges and up to 45 mph in lower
valleys.

* WHERE...Lassen-Eastern Plumas-Eastern Sierra Counties.

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

* IMPACTS...Travel and recreation could be very difficult to
impossible. The hazardous conditions could impact the Wednesday
morning and evening commutes. Gusty winds could bring down tree
branches.

* ADDITIONAL DETAILS...Snow levels will lower from 5500 to 6500 feet
Tuesday night and Wednesday to 4500 to 5500 feet by Christmas Day.
Heavy rain Tuesday night and Wednesday could lead to ponding of
water on roads and minor flood impacts.

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. The latest road conditions for
the state you are calling from can be obtained by calling 5 1 1.

* 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

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.

Moderate to heavy rain with a rain/snow elevation of 6,500 feet and
higher Wednesday evening will lead to
significant rises of rivers, creeks and streams with the potential
for minor flooding.

* WHAT...Flooding caused by excessive rainfall continues to be
possible.

* WHERE...A portion of northeast California, including the following
area, Lassen-Eastern Plumas-Eastern Sierra Counties.

* WHEN...From this evening through Wednesday evening.

* IMPACTS...Excessive runoff may result in flooding of rivers,
creeks, streams, and other low-lying and flood-prone locations.
Creeks and streams may rise out of their banks. Flooding is most
likely in urban, low lying, and poor drainage areas. Rockfall is
also possible in areas of steep terrain.
Minor flooding is possible for the Susan River on Christmas Eve,
but greater than expected rainfall and/or delayed transition to
snowfall could easily push the Susan River higher. No other
main-stem rivers are forecast to flood, but very slow rises and
high flows are expected on the Pit River near Canby, and Middle
Fork of the Feather near Portola.

* ADDITIONAL DETAILS...
- Enhanced runoff and sediment transport are likely below
recent burn areas, but debris flows are not expected.
- For river forecast updates: https://www.cnrfc.noaa.gov
For flood safety information:
http://www.weather.gov/safety/flood

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.