In Pennsylvania, three people were killed in a snowy pileup involving dozens of vehicles.

During a snow squall on a Pennsylvania highway Monday, tractor-trailers and other vehicles lost control and collided, people leapt away from careering trucks seconds before collision, and at least three people were killed, and many more were injured. The crash on Interstate 81 was captured in social media videos, which show drivers and passengers lining the snowy road and jumping out of the way as a chain reaction of crashes unfolds.