Check out for the details, but a 30 foot (10 meter) asteroid smacked into Asia, and detonated mid-air with the force of several A-bombs, touching off nuclear explosion  detectors all over the map, and causing widespread panic. 

They’re out there.

This one fortunately broke up before it hit anything. Dunno precisely why it blew, but I’d figure its own bowshock finally took it apart as it densified the already densifying air.