LEAVENWORTH, Wash. -

Officials fighting a new wildfire complex on a northeast Washington Indian reservation have issued an urgent evacuation notice for about 20 homes.

The Devil's Elbow Complex of four wildfires was detected Sunday on the Colville Reservation. Officials say it was likely ignited by weekend lightning. It has burned across about 900 acres.

  Elsewhere, hot, dry weather on Tuesday has allowed two fires in central Washington to grow.

The state Emergency Operations Center says wildfires have scorched an estimated 485 square miles in Washington state, and they have burned an estimated 334 homes.