Heavy snow, freezing rain: Why Winter Storm Blair battering US is deadliest in decades

Dangerous wintry conditions — heavy snow, freezing rain, shivering cold temperatures — have descended on central parts of America as severe winter storm, Blair, is moving eastwards. Weather experts have warned people of dangerous, bone-chilling air and wind chills and urged people to stay indoors. But what is making the conditions so severe?

Heavy snow, freezing rain: Why Winter Storm Blair battering US is deadliest in decades
Dangerous wintry conditions — heavy snow, freezing rain, shivering cold temperatures — have descended on central parts of America as severe winter storm, Blair, is moving eastwards. Weather experts have warned people of dangerous, bone-chilling air and wind chills and urged people to stay indoors. But what is making the conditions so severe?