The rain is finally here! With heavy downpours expected throughout Thursday and early Friday, flooding remains a major threat.

Heavy rainfall and significant flooding are headed to Southeast Texas Thursday night, as the National Weather Service issued a flood watch.

Acadiana could see flooding going into the weekend along with heavy rain and winds, according to the National Weather Service center. A flood watch is in effect from Friday morning through Saturday afternoon due to excessive rainfall that is expected to push through the area with a 20 percent chance of showers starting Thursday.

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.

Intense thunderstorms sweeping through the Rio Grande Valley unleashed flash floods across multiple counties in Texas late Thursday into Friday, with authorities warning residents to avoid low-lying areas.

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.

Streets were flooded Friday in a Mexican city across from Texas, after heavy downpours along the Mexico-U.S. border led to at least three deaths in Texas and one in Mexico.

More than 20 inches of rain — about a half-year’s worth — fell in some areas near the border on Thursday and Friday.