NASA's TRMM spacecraft is used by meteorologists to understand It looks underneath of the storm's clouds to reveal the underlying rain structure. Blue represents areas with at least 0.25 inches of rain per hour. Green shows at least 0.5 inches of rain per hour. Yellow is at least 1.0 inches of rain and red is at least 2.0 inches of rain per hour. Note: The TRMM spacecraft allows us to see beneath the clouds from Hurricane Jeanne to see the rain which powers the storm. Data Collected: 9/26/04. Animator: Lori Perkins (NASA/GSFC). Scientist: Jeff Halverson (JCET UMBC). Platforms/Sensors/Data Sets: TRMM/PR, TRMM/TMI, TRMM/VIRS.