Flash floods that swept through Texas over the Fourth of July weekend have left more than 100 people dead and dozens of others missing.

Teams from Missouri, Florida and Mexico are aiding in search-and-rescue efforts as the weather is expected to improve over the next couple days.

Torrential rains before dawn on Friday deluged the Guadalupe River, which burst its banks and killed dozens of people, leaving behind mangled piles of debris, trees and cars.