Article Photos: Large tornadoes, damage reported in Dallas area 13/26

Dark clouds form along I-20 in Duncanville, Texas on Tuesday, April 3, 2012.  Tornadoes tore through the Dallas area on Tuesday, tearing roofs off homes, tossing trucks into the air and leaving flattened tractor trailers strewn along highways and parking lots. The National Weather Service confirmed at least two separate "large and extremely dangerous" tornadoes in the Dallas-Fort Worth area. Several other developing twisters were reported as a band of violent storms moved north through the metropolitan area.   (AP Photo/The Dallas Morning News, Steve Pfost)  MANDATORY CREDIT; MAGS OUT; TV OUT; INTERNET OUT; AP MEMBERS ONLY  ORG XMIT: TXDAM104