You can see it's a shallow strike-slip with a bit of thrust to get that high intensity. Lo and behold, that's what it is.
This is right at the end of the big shear zone, so I'm guessing that the thrust aspect is mainly due to end effects.
There's not much activity elsewhere, so there is a chance that all the hard points have been removed and the whole thing is on the move. Each intensity unit is a doubling of the PGV, so I'm guessing there are a lot of oil tank leaks today, and it's just short of the major ruptures.
We'll know soon enough, this should be answered by a thrust near the city.
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