Bronx teenager Tyana Martinez missing since Aug. 1

The NYPD needs help finding a missing teenage girl in the Bronx. 
The family of 17-year-old Tyana Martinez says she was last seen at her home on Woodcrest Avenue back on Aug. 1. 
She's described as being 5 feet tall and 100 pounds. 
Anyone with information on her whereabouts is asked to call Crime Stoppers at 1-800-577-TIPS