Meaning of BARBER POLE in English

BARBER POLE

[Slang], a thunderstorm updraft with a visual appearance including cloud striations that are curved in a manner similar to the stripes of a barber pole. The structure typically is most pronounced on the leading edge of the updraft, while drier air from the rear flank downdraft often erodes the clouds on the trailing side of the updraft.

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