In 2016 FEMA ran a simulation about an asteroid hit in SEPTEMBER 2020

The exercise simulated a possible impact four years from now -- a fictitious asteroid imagined to have been discovered this fall with a 2 percent probability of impact with Earth on Sept. 20, 2020. The simulated asteroid was initially estimated to be between 300 and 800 feet (100 and 250 meters) in size, with a possibility of making impact anywhere along a long swath of Earth, including a narrow band of area that crossed the entire United States.

[link to www.jpl.nasa.gov (secure)]

Things that make you go hmmmmm...