‘Numerous flash floods’ are about to unfold in the Southwest from a double-dose of tropically-fueled rain

A serious multi-day flood threat is underway in the Southwest as two former tropical systems turn the typically dry desert into a breeding ground for heavy rain.

​ A serious multi-day flood threat is underway in the Southwest as two former tropical systems turn the typically dry desert into a breeding ground for heavy rain. Read More Breaking News, Latest News and Videos | CNN