NASA's Infrared Image of Tropical Depression 21W (IMAGE)

NASA/Goddard Space Flight Center

NASA's Infrared Image of Tropical Depression 21W

Caption

Infrared imagery from the AIRS instrument aboard NASA's Aqua satellite captured this image of Tropical Depression 21W as a developing low pressure area on Sept. 30. The purple areas indicate the most powerful thunderstorms with coldest cloud top temperatures.

Credit

NASA/JPL, Ed Olsen

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