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Twentyfive Mile

Unit Information

Okanogan-Wenatchee National Forest
U.S. Forest Service
215 Melody Lane
Wenatchee, WA 98801

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Incident Contact

Forest Service Information
Phone: 509-682-4900
Hours: M-F 9:00 am to 4:00 pm

Highlighted Activity

09/24/2021 Twentyfive Mile Fire Update September 24, 2021
Size: 22,117 acres Total Personnel: 246 (5 crews, 6 engines, 3 helicopters, 15 water tenders, 2 heavy equipment) Containment: 62% Location: 12 miles NW of Chelan, WA Cause: Under...
News - 09/24/2021
Map showing the progression of the Twentyfive Mile Fire using a color gradient to show growth each day. Charts show day to day acreage growth and the dates each color shade representsImage options: [ Full Size ]

The Twentyfive Mile fire, located 12 miles northwest of Chelan, WA, remains at 22,117 acres, with 62% containment, and 48 personnel assigned to the incident. Post fire work, including road repair and rehabilitation of bulldozer constructed fire suppression lines, is occurring. The area closure remains in effect, has been recently updated and will be re-evaluated in mid-October.  Due to the large burned area and road repair, hunters should plan their upcoming hunt outside of the Twenty-five Mile closure area and roads.
  Shady Pass road (Forest Service road #5900) from the Entiat side (west side of #5900) up to Big Hill is now open, the east side from the pass to Lake Chelan remains closed while road repair is completed. Forest Service Road #8410, also known as Slide Ridge Road, is also closed. Heavy equipment traffic is also occurring on Mud Creek and Potato Creek roads, the upper portions of these roads are closed. Please abide by the closure and do not attempt to drive on these roads as there are 22 pieces of heavy equipment (such as graders, dump trucks and water tenders) using the roads doing post fire work.   People recreating in areas downstream or downhill from the burn scar should be aware of weather forecasts for that area as there is potential for debris flows to occur from the fire area. Please check the Burned Area Emergency Response Inciweb site ( for more information and for a Debris Flow Risk map.
  People may see smoke coming from the interior of the fire, especially along Devils Backbone Trail which remains closed. Fire crews will continue to patrol and look for any smokes that are near firelines. Fall rains and winter snow will effectively extinguish fuels burning well within the interior of the fire.
  Inciweb information for this fire will be updated weekly.

Basic Information

Current as of
Incident TypeWildfire
CauseUnder Investigation
Date of OriginSunday August 15th, 2021 approx. 12:00 AM
Location12 miles northwest of Chelan, WA
Incident CommanderTroy Mueller - IC; Fidel Verduzco - IC Trainee
Incident DescriptionWildfire
Coordinates47.973 latitude, -120.304 longitude

Current Situation

Total Personnel48
Size22,117 Acres
Percent of Perimeter Contained62%
Estimated Containment DateSaturday October 30th, 2021 approx. 12:00 AM
Fuels Involved

Short grass, brush, and timber. Pot Peak burn footprint with shrubs and varying amounts of standing and fallen snags. Fire spread is driven by the density and dryness of the heavy fuels, leading to fingering and patchy burn patterns. Regeneration and shrubs may or may not, depending on moisture, contribute to the continuity of the fuel bed, allowing fire to spread with wind or slope.

Significant Events

Shorter daytime burning period, along with the increase of Relative Humidity and cooler seasonal temperatures, have started to slowly affect the availability of fuels to openly burn.


Planned Actions

Division A/D/G-Continue to monitor the fire line specifically in the Windy Hill Drainage where there was an increase fire activity between the main fire and prior burnout. Suppression/repair will continue on dozer and contingency lines throughout the division.

Division T/Y/N will monitor fireline. Crews are implementing rehab and repair of firelines (specifically dozer lines) using heavy equipment.

Repair Group- Roads (gravel, grading, etc.) are being rehabbed to improve safety, reduce washout and improve traffic flow.

Projected Incident Activity

12 hours: Minimal fire behavior is expected as clearing skies continue. The 100 hr, 1000 hr fuels will continue to burn and consume where heat is present in the dead and down. Minimal spread is expected through the period.

24 hours: Surface fire comprised of backing, creeping, smoldering and isolated torching. Fire will continue to burn moderately in unburned areas as clearing skies allow solar heating to dry the exposed dead/down fuels. Minimal fire growth expected.

Current Weather

Weather Concerns

Friday was another in a series of recent warm days over the 25 Mile Fire area. Highs were near 70 degrees on the highest ridges and near 80 in the lower valleys under some hazy sky due to local fire smoke. Dryness continues with afternoon humidity running just below 30 percent. Overall wind direction was from the south and southwest at less than 10 mph. Above average warmth will peak Saturday before clouds and cooler temperatures come on Sunday with potential for precipitation the beginning of next week.