A very close friend works at Cal-Tech seismology dept. They are very concerned, that quakes have been hitting the lower end of the largest fault in Ca. the famous San Andreas which runs north and south thru most of the state. It is over due for the big one, and quakes right up against the San Anfreas that are happening now, increases the chances for the big one many times.Scientists from all over are loking at this swarm of 500 quakes in the last few day's,(5.8 the largest near the Salton Sea) they have various suggestions. Welcome to hotel Calif. My chip collection might be in the Pacific ocean soon.