The search is on for a 15-year-old girl who went missing Friday from her Morgan Hill home.  

Sierra Lamar was last seen by her family early Friday morning as she she left her home at Palm and Dougherty avenues for school.

Marlene Lamar, the teen's mother, said she talked to her daughter Friday morning and said goodbye and told her she loved her. Her daughter left the house around 6 a.m.

Sierra never showed up for school Friday.

Lamar didn’t realize this until she received an email from Sobrato High School notifying her of her daughter's absence.

Her mother said she found this alarming because Sierra usually walks to a school bus just before dawn, but the bus driver saw no sign of her, and neither did her friends.

"I can't believe that she wouldn't contact her friends and let them know she's okay," Lamar said. "She would never want us to go through this much pain."

All day Saturday search teams probed the creeks and fields near the Lamar home and scanned for clues from above in the Santa Clara County Sheriff's Department helicopter.

"We've flown most of these fields, as far as the eye can see in this direction, all the way up to the foothills on the west side as well," said San Jose Sheriff Sgt. Brett Moore.

Working off her scent, police dogs have traced Sierra's half mile long walk to her bus stop, but the trail goes cold beyond her driveway, suggesting she was picked up.

Investigators are mining her laptop for recent contacts.

But, Sierra is described as happy at home and school and had no relationship trouble or history of running away.

"Did she purposely run away? or did something happen between her house and school," said San Jose Sheriff Sgt. Jose Cardoza. "That's something we're looking at. We're just not sure."

Sierra's cell phone charger was left behind in her room and calls now go straight to voicemail.

Her family is blanketing local shops with her picture and doing all they can to bring her home safe.

"Come home, baby, please come home," said her father Stave Lamar. "You're not in trouble. Everyone wants to see you."

Sierra Lamar is five feet two inches tall with a thin build. She was carrying a pink and black "Juicy" brand purse and possibly wearing a gray San Jose Sharks sweatshirt.