Torrential rain; very heavy rainfall often occurring in a short time and likely to cause floods or landslides.
昨夜の豪雨で川が氾濫した。
The river flooded because of last night's torrential rain.
豪雨のため交通が混乱している。
Traffic is disrupted due to the heavy rain.
防災アラートは豪雨の予報に対して出された。
A disaster prevention alert was issued for the forecast of torrential rain.