SILVERTHORNE - A 91-acre wildfire ignited Tuesday on Buffalo Mountain in Summit County, joining a rash of blazes that have burned tens of thousands of acres statewide, threatening homes and forcing thousands to evacuate. "Living in the mountains, we have a lot of benefits, but fire is one of the shortcomings that we have to deal with," Summit County Commissioner Dan Gibbs said at a public meeting Tuesday evening. The Buffalo fire prompted the evacuation of 1,384 homes in the Mesa Cortina and Wildernest neighborhoods above 20 Grand Road, Summit Fire and EMS reported.