Article Photos: Oklahoma tornadoes: Woman killed in Chickasha lived a vibrant life 91/168

A half-mile-wide tornado moves north in Canadian County having just crossed SH 3, the Northwest Expressway, west of SH 4 moving towards Piedmont Tuesday, May 24, 2011.  Photo by Paul B. Southerland, The Oklahoman ORG XMIT: KOD