Aqua Image of Tropical Storm 12W (IMAGE) NASA/Goddard Space Flight Center Caption A symmetrical Tropical Depression 12W (12W) was spotted by NASA's Aqua satellite on Aug. 18 over the open waters of the northwestern Pacific Ocean. Credit Credits: 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.