TRMM Flyby of Francisco (video) NASA/Goddard Space Flight Center Loading video... Caption This is a simulated flyby of NASA's TRMM satellite over Typhoon Francisco on Oct. 22. Heaviest rainfall was occurring at 3 inches per hour (red). Credit Image Credit: SSAI/NASA, Hal Pierce Usage Restrictions None 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.