A series of quakes under the Salton Sea may be a signal that the San Andreas Fault is on the verge of buckling. For the next few days, the risk of a major earthquake along the fault is as high as 1 in 100. Which, holy crap.
It was a day for quake, rattle, and roll on the US West Coast when small earthquakes hit both Los Angeles and the Pacific Northwest on Tuesday. While the pair shared common characteristics, the stories behind why they happened reveal dramatically different Worst Case Scenarios for future earthquakes.