I'm not a seismologist but I understand the principles of earthquakes. Earthquakes occur as a result of the buildup of pressure along a fault line that suddenly explodes or snaps, finally allowing the plates to shift in relation to one another. Los Angeles is situated on the infamous San Andreas Fault - a transform fault boundary dividing the North American plate, which is pushing south at this fault, and the Pacific plate, which is pushing north along the San Andreas. What follows is what I think could be evidence of a massive earthquake looming.
Major earthquakes have historically occurred along the San Andreas. One study from 2010 found that the average time period between major quakes was 137 years. A second and more recent study found that major earthquakes have occurred every 88 years on average.
Either way, the last major earthquake to strike southern California along the San Andreas was in 1857 - over 150 years ago. Nobody doubts another earthquake will occur and the general scientific consensus is that Los Angeles is in fact overdue for a big earthquake.
So I gathered information from the United States Geological Survey (USGS) on earthquakes recorded in the Los Angeles region with a magnitude of 2.0 or greater on the Richter Scale. What I found was that since 2008, the average magnitude for earthquakes near Los Angeles has decreased. In other words, less pressure has been released through 'minor' earthquakes since 2008 than in the thirty years preceding it.
Like I said, I'm no seismologist but it seems to me that either the plates have slowed or there has been pressure building up since 2008. In fact, maybe the plates have slowed because pressure is building up - they're stuck. When will it snap?