Residents of Ohio and Pennsylvania were cleaning up Wednesday after severe thunderstorms Tuesday evening left thousands without power and caused three deaths.

A severe storm knocked out power for over half a million people in Pennsylvania and Ohio, causing widespread destruction and resulting in two fatalities from electrocution. Authorities warned of more severe weather,

Officials are reporting at least three deaths amid a storm system that downed trees and power lines and left about half a million customers in the dark across Pennsylvania, Ohio and neighboring states.