Death and chaos as twisters, snow and ice batter US

The storm system that spawned deadly tornadoes in Texas brought heavy snow, ice and blustery winds to several states, as well as heavy rain in already waterlogged areas where flooding was blamed for more than a dozen deaths.

More than 2,800 flights across the US were cancelled on Monday – more than half of them at Chicago’s two main airports – and around 4,800 were delayed, according to flight-tracking service FlightAware. A typical day sees about 150 cancellations and 4,000 delays.