"Crews are focusing on containing the fire where possible and planning for long-range fire suppression efforts," according to a news release from the National Parks Service.
The fire doesn't appear to have grown overnight. More than 120 people, seven fire engines and multiple heavy helicopters are working to fight the fire. No structures are threatened.
A cold front is expected to arrive this afternoon at the burn area, about 9 miles southwest of Estes Park.
Highs in the upper 50s with winds of 7 to 11 mph are predicted Thursday, and there's a chance of precipitation Friday, according to the news release.
Crews are working to contain the fire in park boundaries north of Glacier Creek, west of Hollowell Park and south of Trail Ridge Road, according to the news release.
Bear Lake Road, Upper Beaver Meadows Road and Moraine Park Campground remain closed since shortly after the fire started Tuesday afternoon.
The campground is about 3.5 miles east of the fire. Trails west of Bear Lake Road and south of Trail Ridge Road also are closed, but Trail Ridge Road remains open.
Smoking and open fires in the park's backcountry are prohibited because of the fire conditions. Poudre Fire Authority in Fort Collins has sent a wildland fire truck and and three people to help with the firefighting effort.
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