Containment on the Larch Creek Fire in Wasco County inched up to 14% Monday evening…and while firefighters are mopping up around much of the fire…they are still working to hold the line on the southwest perimeter around the Tygh Creek area due to heavier fuels and hot spots.  Fire officials said several spot fires ignited outside the containment line but were quickly extinguished, with the size of the fire remaining at 18,684 acres.  Night shift efforts focused on improving and strengthening fire lines.  The National Weather Service has issued a Fire Weather Watch across much of Central Oregon, including the fire area, with the likelihood of thunderstorms Tuesday evening into Wednesday morning that could bring increased winds and lightning strikes with little precipitation.  The Wasco County Sheriff’s Office on Monday modified evacuation advisory levels on the east side of the fire, with Level 3 areas dropping to Level 2, and Level 2 to Level 1.  Evacuation advisories on the west side of the fire are unchanged, but are expected to be reevaluated this morning.  Detailed evacuation advisory areas are available on the Wasco County Sheriff’s Facebook page.  Structural task forces are being demobilized this morning, and crews will continue patrolling around structures that remain in areas under evacuation.