>>2231472 (lb)
LAME. During the 3 Days of Darkness, anyone who is outside perishes almost immediately because of poisonous dust being carried by the wind across the world.
I've read extensively on the 3 Days of Darkness. It is when God intervenes directly because of the amount of sin and lack of repentance. The event clears away 1/2 to 3/4 of the world population.