North Texas July 27, 2017 9:25 pm How Do Wave-Like Kelvin-Helmholtz Clouds Form? NBC 5 Meteorologist Rick Mitchell explains how distinct wave-like clouds are formed in the atmosphere, called Kelvin-Helmholtz clouds. Wake Up to Something Good 1:57 ‘The Wall That Heals' comes to Frisco 1:51 Child killed in Johnson County flooding 0:38 Pet of the Week: Matrix! 2:23 Parents of Fort Worth drive-by shooting victims recalls horrifying moments 2:05 Community raises money for teenage hit-and-run victim