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TRMM Sees Powerful Hurricane Michael

Hurricane Michael was located in the central Atlantic ocean and moving slowly northward when the TRMM satellite passed above on September 6, 2012 at 1858 UTC (2:28 PM EDT). TRMM had an excellent view of Michael as the hurricane was weakening slightly from a powerful category three hurricane with wind speeds of 100 kts (~115 mph). Michael's well defined circular eye is clearly shown by a combination visible and infrared image from TRMM's Visible and InfraRed Scanner (VIRS) instruments. Click here to see an animation that fades from the Visible and InfraRed image a rainfall analysis using data from TRMM's Microwave Imager (TMI) and Precipitation Radar (PR) instruments. This TRMM TMI/PR rainfall analysis reveals that intense rainfall at a rate of over 75 mm/hr (~3 inches) was falling in an outer eye wall. An inner replacement eye is revealed by TRMM PR data. Click here to see animations of 3-D TRMM PR images that show Michael's rainfall structure.


Hal Pierce

SSAI/NASA's Goddard Space Flight Center


NASA image use policy.


NASA Goddard Space Flight Center enables NASA’s mission through four scientific endeavors: Earth Science, Heliophysics, Solar System Exploration, and Astrophysics. Goddard plays a leading role in NASA’s accomplishments by contributing compelling scientific knowledge to advance the Agency’s mission.


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Uploaded on September 7, 2012