Meaning of COLD-AIR FUNNEL in English

COLD-AIR FUNNEL

A funnel cloud or (rarely) a small, relatively weak tornado that can develop from a small shower or thunderstorm when the air aloft is unusually cold (hence the name). They are much less violent than other types of tornadoes.

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