Depending on the impact velocity, it would be ~10-30 times the energy of the Tunguska meteor, or ~3-10 times the energy of the Tsar Bomba. Anyone within one or

Depending on the impact velocity, it would be ~10-30 times the energy of the Tunguska meteor, or ~3-10 times the energy of the Tsar Bomba. Anyone within one or two hundred miles of the impact site would have an incredibly bad day, but it's not civilization-ending. The Chelyabinsk meteor, FYI, weighed ~12M KG.