SALT LAKE CITY (AP) — A California teenager who survived nearly 30 hours alone in the snowy Utah mountains says he kept himself awake with phone alarms, built a snow cave for shelter and held a special beaded bracelet to keep his hopes up. Seventeen-year-old Nicolas Stacy-Alcantara of Frenso says he decided to go for a day-long hike in relatively mild weather last week while visiting an ex-girlfriend. Snow and dropping temperatures forced him to stop and spend the night outdoors. The high school senior managed to find other hikers the next day who called for help with a satellite phone. He was treated at a hospital for frostbite but isn’t expected to need any amputation.