Los Angeles County has been named as the riskiest county in the United States, according to a new Federal Emergency Management Agency (FEMA) index that examines 18 types of natural disasters, including earthquakes, hurricanes and tornadoes, floods, volcanoes and tsunamis. Of the more than 3,000 U.S. counties surveyed, Los Angeles County ranked highest in FEMA’s National Risk Index, which looks at how often natural disasters strike, how many people and how much property are in harm’s way, how socially vulnerable the population is, and how well the region is able to recover. The index also lists three counties in the New York City area—Bronx, New York County (Manhattan), and Kings County (Brooklyn)—in the top 10 riskiest U.S. counties, as well as Miami, Philadelphia, Dallas, St. Louis, and Riverside and San Bernardino counties in California. In contrast, FEMA has named Loudoun County, a Washington, D.C. outer suburb, as having the lowest …