Texas flooding updates: Over 130 dead as flash flood threat increases in Texas

Parts of central Texas are now under a level 3 out of 4 threat for flash flooding.

Kerr County, which was hit hard by this weekend’s rain, is just to the east, outside the zone preparing for this new flash flooding.

More than 5 inches of rain is possible and rainfall rates could climb to 3 inches per hour, overwhelming the already very saturated soil.

The rain is situated over a region colloquially known as "Flash Flood Alley," which is prone to flash flood events that are exacerbated by the region's steep terrain and shallow soil.

-ABC News’ Kyle Reiman

Texas Sen. Ted Cruz said 10 girls and one counselor from Camp Mystic are still unaccounted for.

"The pain and agony of not knowing your child's whereabouts, it's the worst thing imaginable," he said.

Parents were dropping off their children at camp, knowing "your child is going to be swimming and canoes and horseback riding and doing archery and making lifetime friends," he said. "And then suddenly it turns to tragedy."

"Last week, we were picking up our daughter from camp here in Hunt. Our girls have gone to camp here for a decade," he said.

The statewide death toll has climbed to at least 82, according to Texas Sen. Ted Cruz.

"Texas is grieving right now. The pain, the shock of what has transpired these last few days has broken the heart of our state," he said.

In hard-hit Kerr County, 75 people, including 27 children, have died in the flooding, officials said Monday.

Search and rescue efforts are ongoing, officials said.