re: #258 lawhawk
The scary thing is that they could both be foreshocks of a bigger quake, or that the 7.1 is the main quake with more aftershocks to come.
Hopefully, that 7.1 was the main quake in this sequence.
That being said, wasn’t the 2011 quake in Japan preceded by two very strong foreshocks? Now, granted, that was a subduction zone earthquake (IIRC), and that’s simply not possible on the type of faultline that we’re looking at it California.