Ahem...ok, sorta failed.
Posted by PennyB on July 07, 2010 at 23:28:18:

On June 15, I predicted a 4 or larger within fifty miles of the San Jacinto Fault Zone within the next month. That was totally based upon likely aftershock sequences...and continuing seismic activity.

So means nothing. But DRAT...I missed it. Was in So Cal last week.