Tens of millions of people across the central and southern US are at risk Tuesday of severe thunderstorms and tornadoes and fire weather on the storm’s warm side and blizzard conditions on its cold side.

A mammoth and multifaceted storm – which was dealing wind, fire, choking dust and the threat of a blizzard – is pummeling much of the country as it marched east overnight.

Dust storms blinded drivers in the Southwest, tornadoes were possible in the South and blizzard conditions descended on the Central Plains.