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Picture | |
from | Encarta |  |
Doppler Radar Image |
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| Doppler radar measures the speed and direction of the movement of clouds, in addition to cloud density. In this image of a thunderstorm over Oklahoma, Doppler radar shows a mesocyclone, a rotating mass of air that may signal that the formation of a tornado is imminent. | ||||||
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| Phil Degginger/Bruce Coleman, Inc. | ||||||
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| Appears in these articles: | ||||||
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| Tornado; Radar; Meteorology | ||||||
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