TRMM Image of Edouard (IMAGE) NASA/Goddard Space Flight Center Caption On Sept. 17 at 03:39 UTC, the TRMM satellite saw a newer outer eyewall forming around Edouard's original eyewall creating a double eye-wall structure. Red indicates heavy rainfall. Credit NASA/SSAI, Hal Pierce 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.