Derailment on Horseshoe Curve

Though it's not caught on the webcam, the sound of the cars tipping over can be heard at 20:40 (8:40PM EDT). As I type this, there's 10-12 freight cars on their sides on Horseshoe Curve. Link to webcam: https://www.youtube.com/watch?v=j45InTaXwzs&list=PLR9jbUvWYuLtPyoHboYuD0MHQLp0YzD2t&index=6&t=0s
EDIT: Virtual Railfan just posted a video of the aftermath of the derailment on their YouTube page.