* WHAT...South winds 20 to 30 mph with gusts up to 50 mph.

* WHERE...The Santa Clara Valley and Eastern Hills.

* WHEN...Until 10 AM PST Saturday.

* IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. The combination of wind and moist soils will increase the risk for downed trees.