Terra Image of Marcus (IMAGE) NASA/Goddard Space Flight Center Caption On March 21 at 11:00 a.m. EDT (1500 UTC) NASA's Terra satellite analyzed cloud top temperatures in thunderstorms (yellow) circling Tropical Cyclone Marcus' 20 nautical-mile-wide eye. Those temperatures were as cold as minus 80 degrees Fahrenheit (minus 62.2 Celsius). Credit 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.