Aqua Image of Yagi (IMAGE) NASA/Goddard Space Flight Center Caption On Aug. 13 at 10:20 a.m. EDT (1420 UTC) NASA's Aqua satellite found coldest temperatures in a small area of strongest thunderstorms (red) in Tropical Storm Yagi were as cold as or colder than minus 70 degrees Fahrenheit (minus 56.6 degrees Celsius). Credit Credits: NRL/NASA 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.