Three French tourists and two Filipino guides were killed in a flashflood caused by a landslide.
From the en.wikipedia.org
Now I am flooded with the hot passion a child has for her mother, that flashflood of feeling that makes the world vivid and bright.
From the theatlantic.com
When a flashflood came rumbling through the pasture of the family's West Texas homestead, 10-year-old Lily saved her younger brother and sister by hoisting them high into a cottonwood tree.
From the sltrib.com
More examples
Flash flood: a sudden local flood of great volume and short duration