May 28, 2011
In this April 27 photo, a tornado moves through Tuscaloosa, Ala. Storm science has greatly improved tornado warnings in recent years. But if that’s led anyone into a sense of security, that feeling has taken a beating in recent weeks. Super Outbreak 2011, on April 25-28, killed more than 300 people in the South and Midwest. Less than a month later, a devastating tornado took more than 100 lives around Joplin, Mo. There have been more than 500 deaths and counting so far this year, a toll not seen in more than a half-century.