A Red Flag Warning has been issued for the Williams Mine Fire area northwest of Trout Lake until 11 p.m. Friday night due to expected wind, low relative humidity, and unstable conditions.  Officials say fire activity has increased in the last couple of days as fuels have dried out and become more receptive to burning.  Easterly winds have moved the fire from the Morrison Creek drainage up Crofton Ridge.  Large unburned islands remain inside the fire perimeter, and are expected to burn at some point, but are surrounded by areas where the fuels have already been consumed.  Fire officials say that means they will be monitored, but rarely merit any suppression actions.  A helicopter does continue to drop water on the eastern edge of the fire in the Mt. Adams Wilderness, looking to keep the fire west of the South Climb Trail and off of the Yakama Nation Reservation.  Fire size went up 500 acres to 13,028, while containment remains 31%.