On CNN there are extensive reports of a 5.8 Richter Scale Earthquake, centered in Chino Hills, about 29 miles south of LA. The quake wasn't large enough, fortunately, to cause major damage at least as reported thus far. A water main broke, but traffic's still moving through LA.
And now the earthquake was reduced to a 5.4 Richter Scale quake in size by the U.S. Geological Survey.