AIRS Image of Barbara (IMAGE) NASA/Goddard Space Flight Center Caption On July 2, 2019 at 5:17 a.m. EDT (0917 UTC) the AIRS instrument aboard NASA's Aqua satellite analyzed cloud top temperatures of Hurricane Barbara in infrared light. AIRS found coldest cloud top temperatures (purple) of strongest thunderstorms were as cold as or colder than minus 81.6 degrees Fahrenheit (minus 63.1 degrees Celsius). Credit NASA JPL/Heidar Thrastarson Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.