People walk through a flooded street after the heavy rain in Sanaa, Yemen, Aug. 10, 2019. Heavy rain hit Sanaa on Saturday. (Photo by Mohammed Mohammed/Xinhua)

People wait on their cars and motorcycle by a flooded street after the heavy rain in Sanaa, Yemen, Aug. 10, 2019. Heavy rain hit Sanaa on Saturday. (Photo by Mohammed Mohammed/Xinhua)

Photo taken on Aug. 10, 2019 shows a flooding river after the heavy rain in Sanaa, Yemen. Heavy rain hit Sanaa on Saturday. (Photo by Mohammed Mohammed/Xinhua)

Photo taken on Aug. 10, 2019 shows a flooding river after the heavy rain in Sanaa, Yemen. Heavy rain hit Sanaa on Saturday. (Photo by Mohammed Mohammed/Xinhua)