Suomi NPP Image of Lorenzo (IMAGE) NASA/Goddard Space Flight Center Caption The Suomi NPP satellite passed over the eastern Atlantic Ocean on Sept. 29, after Lorenzo weakened back to a Category 4 hurricane. The eye was well defined and there were mesovorticies seen. The strength of the storm also was producing mesospheric gravity waves. Credit Credit: NASA/NOAA/UWM-CIMSS, William Straka 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.