@todwest @Catawu I know nothing (all the seismologists are saying "the fault is just slipping") but seems to me--based entirely on watching earthquakes frequently--it's absolutely something magma driven or moving under the surface, versus a normal slip. Normal slips "slip" with a big jolt and then have lots of aftershocks.. and also tend to propagate out along a fault as the pressure is redistributed. This thing keeps on centering in the same area and is still increasing in magnitude (yesterday a lot of big quakes). Then again, the Mediterranean is not Southern California.