This false-color Atmospheric Infrared Sounder (AIRS) image from April 29, 2014 shows a low-pressure system that spawned strong, supercell thunderstorms and tornadoes across the central and southern U.S. The data showed minimum cloud temperatures to be near minus 118 degrees Fahrenheit (190 Kelvin), indicating that the thunderstorms had strong uplift that pushed cloud tops near the top of the troposphere.
Image courtesy of Ed Olsen, NASA Jet Propulsion Laboratory.