..WIND ADVISORY IN EFFECT FROM 4 PM SATURDAY TO 1 AM EST SUNDAY... * WHAT...West winds 15 to 25 mph with gusts up to 55 mph expected. * WHERE...In Maryland, Washington, Frederick MD and Central and Eastern Allegany Counties. In West Virginia, Morgan, Berkeley, Eastern Grant and Eastern Mineral Counties. * WHEN...From 4 PM Saturday to 1 AM EST Sunday. * IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. * ADDITIONAL DETAILS...The highest gusts are most likely between 6 pm and Midnight this evening. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution when driving, especially if operating a high profile vehicle. Secure outdoor objects. By The National Weather Service, Sterling, Va.