Texas parents frantically posted photos of their young daughters on social media with pleas for information as at least 23 campers from an all-girls summer camp were unaccounted for Friday after floods tore through the state’s south-central region overnight.

At least 24 people were dead and many missing after a storm unleashed nearly a foot of rain just before dawn Friday and sent floodwaters gushing out of the Guadalupe River, Kerr County Sheriff Larry Leitha told reporters Friday evening. The flood-prone region known as Hill Country is dotted with century-old summer camps that draw thousands of kids annually from across the Lone Star State.

State officials said 23 to 25 girls from Camp Mystic, a riverside Christian camp in Hunt, Texas, still were unaccounted for. They declined to estimate how many people were missing across the region but said a massive search was underway, with 237 rescued so far

“I’m asking the people of Texas, do some serious praying,” Lt. Gov. Dan Patrick said. “On-your-knees kind of praying that we find these young girls.”

Rescuers evacuate some campers by helicopter

Texas Game Wardens said Friday afternoon that they had arrived at Camp Mystic and were starting to evacuate campers who had sheltered on higher ground.

Elinor Lester, 13, said she was evacuated with her cabinmates by helicopter after wading through floodwaters. She recalled startling awake around 1:30 a.m. as thunder crackled and water pelted the cabin windows.

Lester was among the older girls housed on elevated ground known as Senior Hill. Cabins housing the younger campers, who can start attending at age 8, are situated along the riverbanks and were the first to flood, she said.

Campers in lower cabins sought shelter up the hill. By morning, they had no food, power or running water, she said. When rescuers arrived, Lester said they tied a rope for the girls to hold as they walked across a bridge with floodwaters whipping up around their calves and knees.

“The camp was completely destroyed,” she said. “It was really scary. Everyone I know personally is accounted for, but there are people missing that I know of and we don’t know where they are.”

Her mother, Elizabeth Lester, said her son was nearby at Camp La Junta and also escaped. A counselor there woke up to find water rising in the cabin, opened a window and helped the boys swim out. Camp La Junta and another camp on the river, Camp Waldemar, said in Instagram posts that all campers and staff there were safe.

Elizabeth Lester sobbed when she finally saw her daughter, who was clutching a small teddy bear and a book. She said a friend’s daughter, who was a counselor for the younger children at Camp Mystic, was among the missing.

“My kids are safe, but knowing others are still missing is just eating me alive,” she said.

Families of missing campers worry

Dozens of families shared in local Facebook groups that they received devastating phone calls from safety officials informing them that their daughters had not yet been located among the washed-away camp cabins and downed trees.

Camp Mystic said in an email to parents of the roughly 750 campers that if they have not been contacted directly, their child is accounted for.

At an elementary school in nearby Ingram that was being used as a reunification center, more than a hundred people stood around a courtyard Friday afternoon with hopes of seeing their loved ones emerge from buses dropping off those who had been evacuated. One young girl wearing a Camp Mystic T-shirt stood in a puddle in her white socks, sobbing in her mother’s arms.

Many families hoped to see loved ones who had been at campgrounds and mobile home parks in the area.

Camp Mystic sits on a strip known as “flash flood alley,” said Austin Dickson, CEO of the Community Foundation of the Texas Hill Country, a charitable endowment that is collecting donations to help nonprofits responding to the disaster.

“When it rains, water doesn’t soak into the soil,” Dickson said. “It rushes down the hill.”

State officials began warning of potential deadly weather a day earlier. The National Weather Service had predicted 3 to 6 inches of rain in the region, but 10 inches fell.

The Guadalupe River rose to 26 feet within about 45 minutes in the early morning hours, submerging its flood gauge, Patrick said.

Decades prior, floodwaters engulfed a bus of teenage campers from another Christian camp along the Guadalupe River during devastating summer storms in 1987. A total of 10 campers from Pot O’ Gold Christian camp drowned after their bus was unable to evacuate in time from a site near Comfort, 33 miles (53 kilometers) east of Hunt.

Flood turns Camp Mystic into a horror story

Chloe Crane, a teacher and former Camp Mystic counselor, said her heart broke when a fellow teacher shared an email from the camp about the missing girls.

“To be quite honest, I cried because Mystic is such a special place, and I just couldn’t imagine the terror that I would feel as a counselor to experience that for myself and for 15 little girls that I’m taking care of,” she said. “And it’s also just sadness, like the camp has been there forever and cabins literally got washed away.”

Crane said the camp, which was established in 1926, is a haven for young girls looking to gain confidence and independence. She recalled happy memories teaching her campers about journalism, making crafts and competing in a camp-wide canoe race at the end of each summer. Now for many campers and counselors, their happy place has turned into a horror story, she said.

—AP