What a Derecho!
A weather term we hadn't heard often, but now will define the violent storm hitting the Washington, D.C. area Friday: Derecho. It's a Spanish word meaning 'straight' and refers to a widespread and long-lived, violent convectively induced straight-line windstorm that is associated with a fast-moving band of severe thunderstorms in the form of a squall line usually taking the form of a bow echo. Indeed.
The good news is most of Georgetown retained power from the violent storm but the damage from falling trees was quite extensive.