Suomi NPP Image of Alberto (IMAGE) NASA/Goddard Space Flight Center Caption At approximately 3:23 a.m. CDT on May 25, NASA-NOAA's Suomi NPP satellite flew over System 90L and saw tropospheric gravity waves from the convection off the Yucatan Peninsula. It also showed the low level circulation just to the west of the convection and a lightning streak. Credit Credits: NASA/NOAA/UWM/SSEC/CIMSS, William Straka III 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.