Earthquakes

6.4-magnitude earthquake shakes Southern California - UPI.com
UPI reports: "A 6.4-magnitude earthquake shook Southern California on Thursday morning in the Mojave Desert about 120 miles from Los Angeles, according to the U.S. Geological Survey. [...] The earthquake was the largest to hit Southern California since 1999, when a 7.1-magnitude quake hit the Mojave Desert."

Comment: I've been reading reports that suggest this may be a precursor to the "big one" that is certain to hit sometime in the next 50-100 years.  I wonder if Californians are really prepared?