They’re calling it the nation’s top priority – the Caldor Fire, which now spans more than 143,000-acre fire is inching closer to Tahoe communities. The fire has sparked the first evacuation warnings within the Tahoe Basin in years. Christmas Valley residents were told to leave along with residents of Twin Bridges and Echo Summit. Tourists seeing to come to Lake Tahoe have been told to reschedule their plans ahead of what’s normally a busy week leading up to Labor Day weekend. The fire is just 12% contained.