National Aeronautics and Space Administration, (NASA): Hurricanes/Tropical Cyclones
Aug. 27, 2011, First Update
TRMM Satellite Shows What's Happening Under the Hood of Hurricane Irene's Clouds
NASA's Tropical Rainfall Measuring Mission (TRMM) satellite radar saw the inner core of Hurricane Irene for a fourth time on Friday afternoon, August 25. On Friday afternoon, the TRMM radar showed that the southern half of the eyewall was gone. Some strong precipitation did still exist in the remaining eyewall to the north of the eye.