NBC Affiliates | Top 10 | Weather KXAS Re-Signs David Finfrock, Shuffles Weather Team By Merrill Knox on Aug. 22, 2012 - 11:58 AM KXAS is making changes to its weather team heading into the Fall. The Dallas NBC O&O has hired Rick Mitchell, who has been chief meteorologist at KOCO in Oklahoma City since 1994. In the coming weeks, Mitchell will join the 4 ...