* WHAT...For eastern portions of the valleys, northeast to east winds 20 to 30 mph with gusts 45 to 55 mph expected, locally higher near mountain foothills. For the western valleys, more localized wind gusts 35 to 45 mph. Strongest and most widespread winds will be on Friday.
* WHERE...San Diego County Valleys.
* WHEN...From 8 PM Thursday to 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.
* ADDITIONAL DETAILS...Winds will become easterly on Saturday.