Meaning of ANVIL CRAWLER in English

ANVIL CRAWLER

[Slang], a lightning discharge occurring within the anvil of a thunderstorm, characterized by one or more channels that appear to crawl along the underside of the anvil. They typically appear during the weakening or dissipating stage of the parent thunderstorm, or during an active MCS .

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