Okay, so I checked out http://quake.wr.usgs.gov/recenteqs/ after feeling the quake, and it was at 250 quakes. Currently, it shows 366. Granted, it shows them for the whole week, but in just a few hours, there have been over 100 quakes in that area.

Wow.

And by that area, I mean California/Nevada.

There have been a few over by the Cajon pass too.