* 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.

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

* WHAT...Heavy snow expected. Snow accumulations of 1 to 3 feet
above 4500 feet, with locally higher amounts at peaks. Up to 1
foot between 3500 to 4500 feet. Wind gusts up to 60 mph.

* WHERE...Burney Basin / Eastern Shasta County, Mountains
Southwestern Shasta County to Western Colusa County, and Shasta
Lake Area / Northern Shasta County Counties.

* WHEN...From 4 PM Wednesday 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 levels will be above 5000 feet
Wednesday, then drop to 3500 feet by Thursday night. Snowfall
rates up to an inch per hour at times.

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

* WHAT...South winds 25 to 35 mph with gusts up to 60 mph possible.

* WHERE...Carquinez Strait and Delta, Sacramento Valley, Motherlode,
Northeast Foothills,  and Northern San Joaquin Valley.

* WHEN...From Tuesday afternoon through Friday afternoon.

* IMPACTS...Strong winds and saturated soils could blow down trees
and power lines resulting in widespread power outages. Strong
winds may cause impacts to unsecured items, including temporary
structures and holiday decorations. Travel could be difficult,
especially for high profile vehicles.

* ADDITIONAL DETAILS...Strongest wind gusts expected in the northern
Sacramento Valley and adjacent foothills on Wednesday.

Monitor the latest forecasts and warnings for updates.

* 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.