A 27-year-old woman is behind bars after police say she left her child locked up in a hot car for nearly an hour while she was busy shopping. Amberly Coffman faces complaints of child endangerment. She remains in the Tulsa County Jail on 25-thousand dollars bond, awaiting a June 30th court date.

Police rescued the five-month-old baby boy on Saturday in Sand Springs, where officers say he was left in a van that was parked at the Wal-Mart. People heard and then saw the child crying and called police.

Sergeant Kyle Alexander was the first officer on scene.

"Seeing that the child was crying and shaking and was red and probably very hot, I used my expandable baton to bust out the driver door window," Alexander says.

He says witnesses grabbed the baby and cooled it off in an air conditioned police car. Officers say the child had been in the van for 50 minutes.

To show how dangerous a hot vehicle is, Safe Kids Coalition today put a baby doll in the back seat of a pickup truck, along with a temperature gauge. In about 50 minutes, the temperature inside the truck went up an incredible 51 degrees.

Wendi Guthrie is a registered nurse, and a concerned parent. She says the heat is worst on crying babies because their organs shut down when body temperatures reach 107 degrees.

"The more the child gets upset and with them breathing and crying, it's going to raise body heat," Guthrie says. "We're going to have dehydration. It's not a good situation for the child to be in."

Coffman told police she forgot the child was in the car. Lots of other parents say that's tough for them to understand. Coffman's child is now in state custody and his parents will have to go to court to get him back.

On a hot day like today, even if a window is cracked or the air conditioner is left on, if the car is shut off and locked, the temperature inside can go up 19 degrees in just ten minutes.

To remind yourself that your child is in the car, put a note in the front mirror or leave your purse next to the child car seat -- anything that will make you remember. A child is our most precious cargo and injuries caused by being left in hot cars are entirely preventable.

In the last nine years, eleven Oklahoma children have died from heat stroke while being left inside hot vehicles. Five of those cases were in the Tulsa area.