Photo Gallery: Tornado prediction: Feb. 23, 2012 5/14

ADVANCE FOR USE SUNDAY, OCT. 2, 2011 AND THEREAFTER - FILE - This May 23, 2011 photo shows the damaged St. John's Regional Medical Center behind debris in Joplin, Mo., a day after a powerful tornado destroyed much of the city. (AP Photo/Charlie Riedel) ORG XMIT: NY873