Due to the lack of moisture throughout the park in the last several days, the fire danger level in Yellowstone has been elevated to Extreme. Fire activity has increased on two fires in the central portion of the park, and smoke may be visible from several areas along the Grand Loop Road from Norris to Canyon Village and south to Fishing Bridge. Fire restrictions are still in effect. As in Grand Teton National Park and Teton County to the south, campfires are allowed only in established fire grates or fire rings in picnic areas or campgrounds. The use of portable charcoal grills is prohibited. Any fire which can produce an ash is prohibited in the backcountry. You can use portable stoves and lanterns which use propane, white gas, kerosene, or jellied petroleum for fuel anywhere in the park. Smoking is prohibited along all trails and anywhere in the backcountry.