it veiwed in the context of the rest of the sequence of quakes it appears to be.
The fault that these are occurring on is not big enough to produce anything near a major quake.
There is a fault about 1 mile from my home that is capable of producing an 8.0. I think the fault in La Habra is only capable of producing something around a 6.0 (which is 100 times stronger than the one last night, but not likely to cause any kind of major damage in Southern California).
How long have you lived in California?