could be coincidence, but evidence is growing that major earthquakes can trigger other quakes on other fault systems. Since this 6.1 is in a very active portion of the San Andreas system, stress could be transferred northward to bound up areas of the fault.
Yes and it was the failed policies of the last 8 years that caused this catastrophe....
(News media fail to recognize that BO included his own first 1.33 years as Pezident in that disclaimer....)