Congratulations, you are front row center to a mass extinction event. There was not time for the dinosaurs to react to the meteor either.
"It is generally believed that the K-Pg extinction was triggered by a massive comet/asteroid impact and its catastrophic effects on the global environment, including a lingering impact winter..."
Same page then suggests volcanic activity, etc is a less popular theory.
http://www.slate.com/articles/health_and_science/animal_fore...
It's not enough that an asteroid hit the Earth, but it's such a simple theory that everyone can remember, it has been popularized by everyone.
I did assume however that volcanic activity could've been as a result of the impact.