US polar vortex: killer cold snap to give way to historic warm-up after brutal weather leaves 21 dead and millions stranded

A killer polar vortex gripping parts of the US is set to ease up and give way to a dramatic, never-before-seen warm-up.

Brutal U.S. cold leaves 21 dead and yet temperatures are to soar within days.

Brutal winds sent the mercury plummeting to -34C in the Midwest, which has been struck by a historic deep freeze, but temperatures are expected to soar by up to 80 degrees within days.

Meteorologists said past record-cold waves have never dissipated so quickly as they predicted that the region would be seeing “spring-like” temperatures by the week’s end.

Temperatures in Chicago have been at near-record lows. Amid the freezing conditions, the city reportedly experienced “frost quakes” with residents reporting loud booms.

Read the story from the Evening Standard - ”US polar vortex: killer cold snap to give way to historic warm-up after brutal weather leaves 21 dead and millions stranded.”