The storms trapped residents in their homes, forced drivers to abandon their vehicles on flooded roads and shut down an airport.

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.

Cars were submerged by floodwaters in McAllen, Texas, on Thursday, March 27, as severe thunderstorms brought heavy rain to the Rio Grande Valley in South Texas, triggering flash flooding. (Credit: TxD

A large part of South Texas is reeling from life-threatening flooding that began overnight and continued into Friday morning. Thunderstorms began Wednesday, with another round of heavy rainfall on Thursday afternoon and evening.

Devastating flooding hit the Rio Grande Valley on Thursday after repeated rounds of thunderstorms dumped as much as a foot of rain in less than 48 hours.

Abandoned vehicles littered submerged roads across South Texas’ Rio Grande Valley Thursday and Friday after over half year’s worth of rain - approaching a full year’s worth in some places - caused at least four deaths and forced dozens of water rescues near the US-Mexico border.

Drenching rains along the Texas-Mexico border trapped hundreds of people in flooded homes and in cars stranded in high waters.

Abandoned vehicles littered submerged roads across South Texas’ Rio Grande Valley Thursday and Friday after over half year’s worth of rain – approaching a full year’s worth in some places – forced dozens of water rescues near the US-Mexico border.