Terra image of Nana (IMAGE) NASA/Goddard Space Flight Center Caption On Sept. 1 at 11:35 p.m. EDT (Sept. 2 at 335 UTC), the MODIS instrument aboard NASA's Terra satellite gathered temperature information about Tropical Storm Nana's cloud tops. MODIS found the most powerful thunderstorms (yellow) were around the center of the storm, where temperatures were as cold as or colder than minus 80 degrees (minus 62.2 degrees Fahrenheit). That area was surrounded by slightly less powerful storms (red) where cloud top temperatures were as cold as or colder than minus 70 degrees Fahrenheit (minus 56.6 Celsius). Credit Credit: NASA/NRL 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.