The fire is showing minimal activity. The most active part of the perimeter and where smoke is showing the most is to the north east corner. The fire continues to slow as it smolders and creeps through sparse vegetation and other surface fuels in fields of decomposed granite. Fire behavior and smoke may increase later in the week, due to the continued warming trend. Sparse fuels might prevent noticeable increases. Parts of the fire have been observed with 6-12 inch flame lengths as it burns through short brush patches and trees.
Although smoke is visible from various locations in the park, including Tioga Road, Sentinel Dome, and Glacier Point, there have been no smoke impacts to Yosemite Valley. Fire managers are working with Mariposa County Air Pollution Control District concerning potential air quality impacts to nearby smoke sensitive areas.
Fire crews utilized natural barriers to check the fire spread to the south on June 10. They last hiked into the fire area June 21 to further monitor the fire for growth, direction of spread, fire behavior and smoke production.
The Forbidden Fire meets the park’s fire management objectives of firefighter and the public safety, as the fire presents few risks to values. The fire poses no threat to park service buildings, roads or infrastructure. When appropriate, fire crews will utilize pack stock for logistical support on this fire in an effort to preserve wilderness character.
The fire was named for the Forbidden Wall along the Yosemite Falls trail.