Another fire, this one burning northwest of Yellowstone Lake, has been added to the growing list of small blazes burning in the national park.

The Arnica fire is located 5 miles west of the Bridge Bay Campground. The lightning-caused fire is burning in a flat area of mature lodgepole pine. As of late Wednesday afternoon, it was estimated at four acres in size and growing slowly. The fire is not burning near any hiking trails or backcountry campsites.

Firefighters are monitoring the fire and developing management strategies. This is the 20th fire reported in Yellowstone National Park this year, four of which are currently burning.

At times smoke from the fire is visible from the Mt. Washburn Fire Lookout Web cam at http://www.nps.gov/archive/yell/tours/livecams/mtwashburn/index.htm.

The Chaw Pass fire was discovered Tuesday afternoon. It is about 3.5 miles east of Pebble Creek Campground, high on a ridge above the Cache Creek drainage. This fire remains estimated at a half acre. Its cause is under investigation.

Both the Arnica and Chaw Pass fires have the potential to grow in the coming days, due to their location and to a weather forecast calling for clear skies and daytime highs in the 60s for the next few days.

Fire updates will be issued as conditions warrant. They will be posted at http://www.nps.gov/yell/parknews/newsreleases.htm, and will be recorded on the park's 24-hour fire information line at 307-344-2580.

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