POTTSVILLE (AP) – A snow squall on Interstate 81 in Schuylkill County yesterday morning caused tractor-trailers and other vehicles to lose control and slam into each other. More than a dozen people were injured. The crash, which occurred around 10:30 a.m., was captured in videos posted on social media that show drivers and passengers lining the snowy road and jumping out of the way as a cascade of crashes unfolded. State Police report over 50 vehicles were involved. Schuylkill County Coroner, Dr. David Moylan said three fatalities had been confirmed and that number could rise because fires were impeding rescuers.