North Texas April 27, 2017 6:40 pm Weather Quiz: Convective Available Potential Energy NBC 5 Meteorologist Rick Mitchell asks: What does the CAPE index predict? Wake Up to Something Good 1:47 Heavy rainfall affects parts of DFW, Kaufman County 2:43 Governor declares state of emergency after Oklahoma tornadoes 2:09 Aftermath of heavy flooding in Kaufman County 1:41 Multiple killed during Oklahoma tornadoes 6:20 5 Talk Street: Dallas Cinco de Mayo