weather bomb
noun [ C ] environment specialized uk/ˈweð.ə ˌbɒm/ us/ˈweð.ɚ ˌbɑːm/
天气炸弹，气象炸弹（发展非常迅速的风暴，尤指其中心气压迅速下降的风暴）
a storm that develops very fast, especially one in which the air pressure at its centre falls quickly
When the gale collided with a warm front moving quickly north, it triggered a weather bomb. 当大风与快速北上的暖锋相撞时，引发了气象炸弹。