Community meeting scheduled for Monday.
SISTERS, Ore. (August 24, 2025) — As of this morning, the Flat Fire is estimated at 21,971 acres with 0% containment. The fire is burning approximately two miles northeast of Sisters, Oregon.
Daytime crews continued aggressive firefighting efforts amid difficult conditions today, as high temperatures and dry fuels resulted in increased fire activity. Crews worked under a Red Flag warning and heat advisory throughout the day. Despite the challenges, they were able to build on progress made overnight in the northeastern and southeastern portions of the fire.
In the northeastern portion of the fire, wildland resources reported reduced fire activity and were able to focus on strengthening and tying together portions of the dozer line. On the southeastern portion of the fire, crews completed handline installation throughout Whychus Canyon.
The southern portion of the fire remained very active, and crews coordinated aggressive suppression efforts with air attack. Structural resources remained dedicated to structure protection and are actively engaged in firefighting efforts near homes. These crews are assigned to point protection, a tactic used to defend structures directly threatened by the fire actively. Point protection works in conjunction with coordinated efforts from wildland crews and air resources to slow the fire’s overall spread and impact.
On the western edge of the fire, challenging weather and terrain contributed to erratic fire behavior, resulting in a spot fire located off the northwestern corner of this morning’s fire perimeter. Resources that could be shifted from more stable portions were reassigned to this area, and crews will remain actively engaged with the spot fire.
The fire is expected to remain active late into the evening. As fire activity slows in the early morning hours, firefighters will take advantage of cooler temperatures and higher relative humidity to catch spot fires, reinforce the line, and mop up hot spots. Seven OSFM Task Forces remain in place, providing structure protection through the night operational period.
Incident officials will host a community meeting tomorrow, Monday, August 25, starting at 6:00 pm at the Sisters High School, located at 1700 W McKinney Butte Rd. Local and incident officials will provide a fire update and answer questions from the community. The meeting will be streamed virtually via the Sisters-Camp Sherman Fire Department Facebook page.