* WHAT...South winds 10 to 20 mph with gusts up to 45 mph expected. * WHERE...In Oregon, Clackamas County Cascade Foothills and Lower Columbia River Counties. In Washington, Cowlitz County Lowlands, South Washington Cascade Foothills, and Willapa Hills Counties. * WHEN...Until 11 AM PDT this morning. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. * ADDITIONAL DETAILS...Full leaf cover on trees may result in trees or limbs suffering wind damage at lower wind speeds than usual. Exacerbated impacts possible as a result.