Meaning of BEAR'S CAGE in English

BEAR'S CAGE

[Slang], a region of storm-scale rotation, in a thunderstorm, which is wrapped in heavy precipitation. This area often coincides with a radar hook echo and/or mesocyclone , especially one associated with an HP storm

The term reflects the danger involved in observing such an area visually, which must be done at close range in low visibility.

A comprehensive English glossary of weather.      Полный английский глоссарий погоды.