 And there is a severe thunderstorm warning for northeastern Washington County in north-central Maryland and northwestern Frederick County in north-central Maryland, and that'll be until 8-15. And this thunderstorm was located over Smithburg or near Waynesboro, moving northeast at 35 miles per hour. We'll have more on WTOP. You're listening to WTOP, Washington's news, traffic, and weather station. WTOP News. Facts Matter.