The Sharps Fire was reported to South Idaho dispatch at 11:15 this morning. The fire is burning grass and heavy timber in steep difficult terrain. Firefighters are experiencing extreme fire behavior with running, spotting and torching. Gusty winds, low humidity, high temperatures and passing thunderstorms are of concern. Structures are threatened. Muldoon Canyon Road is closed from EE-DA-HO Ranch entrance to Baugh Creek Road. Both the Little Wood River Reservoir and the High 5 Creek Recreation area have been evacuated and are closed to the public.