Article Photos: Twister season starts late, but starts nonetheless 5/6

CORRECTS TORNADO MEASUREMENT TO NUMBER REPORTED BY THE NATIONAL WEATHER SERVICE - A fire burns in the Tower Plaza Addition in Moore, Okla., following a tornado Monday, May 20, 2013. A tornado as much as half a mile wide with winds up to 200 mph roared through the Oklahoma City suburbs Monday, flattening entire neighborhoods, setting buildings on fire and landing a direct blow on an elementary school. (AP Photo Sue Ogrocki)