I think there was just a little one.
I was engrossed in writing an email so I didn’t even realize it.
Now to check out the USGS site.
UPDATE: Here’s the info on the quake: http://quake.usgs.gov/recenteqs/Quakes/ci14312160.html
A light earthquake occurred at 12:58:49 AM (PDT) on Thursday, August 9, 2007.
The magnitude 4.5 event occurred 7 km (4 miles) NNW of Chatsworth, CA.
The hypocentral depth is 6 km ( 3 miles).
If you felt it, don’t forget to report it here.
:: MAP: Did You Feel It? ::