The Physical Environment

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Doppler Radar


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Doppler radar station

Photo credit: NOAA
Used with permission

 


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Hook echo often a precursor to tornadic activity

Photo credit: NOAA
Used with permission

 

Doppler radar is based on the "Doppler effect", where a signal changes frequency of waves that occurs when the emitter or observer is moving towards or away from each other. Doppler radar can "see" into a thunderstorm and measure the velocity of falling precipitation.

 

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© 2003 - 2015 Michael Ritter (tpeauthor@mac.com)
Last Revised September 26, 2006