At a Glance FEMA rolled out the National Risk Index at the end of last year.It puts three New York City-area counties at greater risk of tornadoes than Oklahoma County. At first glance, the list of the 10 riskiest places for natural disasters in the U.S. seems counterintuitive. Los Angeles County, with its risk of wildfires, droughts, heat waves and earthquakes, seems a logical choice to be high on the Federal Emergency Management Agency's . Others near the top may...