So far, no damage is noticeable.
restoreWatchdog script was useful 
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Magnitude 4.0
Date-Time * Friday, April 24, 2009 at 03:27:50 UTC
* Thursday, April 23, 2009 at 08:27:50 PM at epicenter
Location 33.910°N, 117.767°W
Depth 0 km (~0 mile) (poorly constrained)
Region GREATER LOS ANGELES AREA, CALIFORNIA
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