SAN ANTONIO — The death toll from Thursday morning's flash flood that overwhelmed numerous cars in northeast San Antonio – pushing them off the roadway and into a nearby creek bed – has grown to 13, officials said.

SAN ANTONIO (AP) — Heavy rains in San Antonio rapidly flooded roads, swept away submerged cars and sent some people scrambling up trees to escape fast-rising waters Thursday while firefighters made dozens of rescues across the nation’s seventh-largest city. At least five people died and two were still missing, authorities said.

As another side effect of this week’s flooding, humidity levels are set to surge this weekend, causing dangerous heat index values.

Calls for water rescues began just before sunrise, and by midmorning, crews had performed 65 water rescues throughout the area.

A Weather Impact Alert Day has been issued for Friday as Southeast Texas can expect 1-2 inches of rain with possible flash flooding risks.

Multiple people are dead and more are missing amid widespread flooding in a major city in Texas. At least four people have died and two are reported as missing amid the flooding in San Antonio on Thursday. The San Antonio Fire Department says that it rescued 10 people on Thursday alone, and that four people needed immediate medical attention.

Street flooding is possible in parts of Houston, and the risk for hail and damaging winds continues. The storms should move out by late afternoon. Currently, high water has been reported on FM 1960 between Huffman and Eastgate in northeast Harris County.

Severe storms swept through North Texas on Sunday night, leaving over 47,000 residents without power and raising concerns about flash flooding. The storms, which began overnight, initially knocked out power to more than 90,