Aqua Image of Isaac (IMAGE) NASA/Goddard Space Flight Center Caption At 1 a.m. EDT (0500 UTC) on Sept. 11, 2018 the MODIS instrument aboard NASA's Aqua satellite looked at Tropical Storm Isaac in infrared light. MODIS found coldest cloud top temperatures off-center as cold as or colder than minus 80 degrees (yellow) Fahrenheit (minus 112 degrees Celsius). Those most powerful storms were embedded in strong storms with cloud tops as cold as or colder than minus 70 degrees (red) Fahrenheit (minus 56.6 degrees Celsius). 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.