A power outage affecting 3,200 customers in the Nevada City area began at 4:15  p.m. Wednesday, power officials said. By 6 p.m., only 110 customers were without power, and the restoration process was expected to last until at least 8 p.m., said Brandi Ehlers, Pacific Gas & Electric spokeswoman. The outage was caused by a tree falling on power lines near North Bloomfield Road, Ehlers said. The initial affected area includes Brunswick Road north to the Lake Vera area and Gold Flat Road west to Reward Street, Ehlers said. The 110 customers still without power are located near North Bloomfield …