Severe storms dumped about half a year’s rainfall in two days, leading to flash floods across both sides of the border.

Drenching rains along the Texas-Mexico border trapped hundreds of people in flooded homes and in cars stranded in high waters, scrambling rescue crews to calls for help that continued Friday even as the downpours let up.

Three people were killed in Hidalgo County, where one city said there had been a “record-breaking downpour,” while another was killed in Mexico.