Tropical Depression 19 Hits a Backward (IMAGE) NASA/Goddard Space Flight Center Caption Infrared satellite imagery on Oct. 22 at 12:23 p.m. EDT, from the AIRS instrument aboard NASA's Aqua satellite showed that the strongest thunderstorms in Tropical Depression 19 stretched from the northeast to the southeast of the center of the depression's circulation. Those thunderstorms are reaching high into the troposphere where cloud top temperatures are as cold (purple) as -63F. Credit NASA JPL, Ed Olsen 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.