渦か雷らいからいMeanings1nouncyclonic thunderstormA rare, technical or literary term for a thunderstorm associated with a cyclone or rotating storm system. Not in everyday use.気き象しょう学がくの文ぶん献けんで「渦か雷らい」という語ごを見みかけることがある。The term 渦雷 can sometimes be seen in meteorological literature.