The National Weather Service's definition of a mesocyclone is a rotation signature appearing on Doppler radar that meets specific criteria for magnitude, vertical depth and duration.

When severe weather strikes, understanding the terminology can be the difference between life and death. Among these crucial ...

Technically, the mesocyclone is defined as the radar signature that appears if one is present (a yellow circle on Doppler velocity products), but you can often see the rotation with your bare eyes.

A mesocyclone is a low pressure area inside the thunderstorm that sometimes helps to cause a tornado. Visual evidence of a mesocylone is sometimes displayed as a wall cloud.

It was April 9, 1953 that the first hook echo was tracked on radar and later docu. ... Mesocyclone Tornadoes This post assumes you have read Severe Weather Primer Parts 1 - 7.

Radar allowed the detection of mesocyclones, which became the basis for tornado forecasts and a boon for chasers, who would stop at payphones periodically to call the lab for the latest radar intel.

Radar allowed the detection of mesocyclones, which became the basis for tornado forecasts and a boon for chasers, who would stop at payphones periodically to call the lab for the latest radar intel.