Earthquake Causes Tsunami Energy accumulates in the overriding plate until it exceeds the frictional forces between the two stuck plates. When this happens, the overriding plate snaps back into an unrestrained position.
Agoura Hills is a city in Los Angeles County, California. Its population was estimated to be at 20,843 in 2014, up from 20,537 at the 2000 census.
Upland is a city in San Bernardino County, California, United States. The municipality is located at an elevation of 1,242 feet. As of the 2010 census, the city had a population of 73,732, up from 68,393 at the 2000 census. It was incorporated on May 15, 1906, after previously being named North Ontario. Upland is located at the foot of the highest part of the San Gabriel Mountains. The Los Angeles suburb is part of the Inland Empire, a metropolitan area situated directly east of the Los Angeles