* WHAT...For eastern portions of the valleys, northeast to east winds 20 to 30 mph with gusts 45 to 55 mph expected. For the western valleys, more localized wind gusts 25 to 35 mph.
* WHERE...San Diego County Valleys.
* WHEN...Until 8 PM PDT Saturday.
* IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected. Travel will be difficult for high profile vehicles.