Article Photos: From Rockies to Rust Belt, storm brings extremes 16/16

A man walks along a temporary levee being quickly constructed in hopes of holding back the rising Mississippi River Thursday, April 18, 2013, in Clarksville, Mo. Middle America was overwhelmed by weather Thursday, with snow in the north, tornadoes in the Plains, and torrential rains that caused floods and transportation woes. (AP Photo/Jeff Roberson)