They are lining up M6's along a fault. We might expect another one down at the end, since the trend is so powerful. Unfortunately, M6's don't create a stress shadow, where we would say it's over and done with. If these earthquakes line up on this straight fault (thrust?) for 300km, then we can expect an M8. I don't mean to be super gloomy, but this is fairly standard in that part of the world.