flash flood

US /ˈflæʃ flʌd/
UK /ˈflæʃ flʌd/
"flash flood" picture
1.

鉄砲水, 急な洪水

a sudden local flood, typically due to heavy rain

:
The desert area was hit by a severe flash flood.
砂漠地帯は深刻な鉄砲水に見舞われた。
Residents were warned about the possibility of a flash flood after continuous heavy rainfall.
継続的な大雨の後、住民は鉄砲水の可能性について警告された。