Powerful winds blew a portable house away in northern China. The video was filmed in the city of Harbin in Heilongjiang Province on April 12. Pedestrians were seen struggling to walk forward and a roof landed on two parked vehicles after being ripped off a residential building. The local meteorological observatory has upgraded the blue warning signal (the lowest level) to a yellow warning signal (the second-lowest level). The winds have reached speeds up to 63.5 mph. Two vehicles were damaged but no casualties have been reported. The video was provided by local media with permission.