A farmer works in a field southwest of WaKeeney, Kansas with ominous  clouds looming overhead on Sunday, June 20, 2010. Severe weather  battered parts of northwest Kansas with heavy rain, wind, hail and  isolated tornadoes. (AP Photo/The Hays Daily News, Steven Hausler) | BostonBP

A farmer works in a field southwest of WaKeeney, Kansas with ominous clouds looming overhead on Sunday, June 20, 2010. Severe weather battered parts of northwest Kansas with heavy rain, wind, hail and isolated tornadoes. (AP Photo/The Hays Daily News, Steven Hausler) | BostonBP