* WHAT...South winds 25 to 35 mph with gusts up to 50 mph expected Base of the Blue Mountains. * WHERE...In Oregon, Foothills of the Southern Blue Mountains of Oregon. In Washington, Foothills of the Blue Mountains of Washington. * WHEN...From 8 AM to 7 PM PST Friday. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result.