Major disasters during the wars on Anáhuac caused by asteroids used as kinetic kill weapons during the conflicts on Old Earth:
- The First Blow occurred at the start of the Last War when a small asteroid impacted in Tlaxcallan a hundred kilometers from Imperial Tenochtitlán on Old Earth causing widespread destruction. It triggered massive earthquakes and initiated a new ice age due to the dust thrown into the upper atmosphere. The attack did not fatally wound the Méxica Empire and unleashed a major world war.
- The Second Blow may have been during the Last War and caused much information to be lost.