A supercell thunderstrom in Oklahoma. Image courtesy of NSSL/NOAA ... Technically, the mesocyclone is defined as the radar signature that appears if one is present (a yellow circle on Doppler ...
Reflectivity of the supercell that produced the Moore, Oklahoma tornado on May 3, 1999. At the time of this radar scan, a tornado was on the ground. Image courtesy NWS. A tornado is a violently ...
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