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Crescent Mountain Fire

Unit Information

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

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Incident Contact

Crescent Mountain Fire Info
Phone: 480-744-9318
Hours: 8AM - 8PM

Highlighted Activity

08/17/2018 2018-08-17-Update-CrescentMTN
Crescent Mountain Fire August 17, 2018 @ 8:00 a.m. Crescent Mountain Fire: approx. 19,500 acres; containment unknown Personnel: 413Point of Origin: Approximately 21 miles west of TwispStart Date:..
News - 08/17/2018
Dozer improves fireline in the Poplar Flat areaImage options: [ Full Size ]

2018_08_11- of August 9, the Crescent Mountain Fire consumed the Gilbert Fire, so we will now be reporting on only one fire.

The Level 2 Evacuation area has been expanded. There are currently no Level 3 Evacuations in place. The fire is approximately 1.7 miles from the closest home.

The Crescent Mountain Fire started on July 29, 2018 in the headwaters of the Twisp River, approximately 21 miles from Twisp, Washington in the Okanogan - Wenatchee National Forest. The fire is currently being managed by the type 1 Southern Area Red Team.

Up-to-date area closure notices and evacuation levels are included in the daily updates, posted on this Inciweb page , as well as on the incident Facebook page at


Basic Information

Current as of
Incident TypeWildfire
Date of OriginSunday July 29th, 2018 approx. 09:56 AM
LocationHeadwaters of the Twisp River Valley
Incident CommanderMike Dueitt
Coordinates48.451 latitude, -120.579 longitude

Current Situation

Total Personnel413
Size17,924 Acres
Percent of Perimeter Contained37%
Estimated Containment DateMonday October 22nd, 2018 approx. 12:00 AM
Fuels Involved

Timber (Litter and Understory)

Subalpine fir, lodgepole pine and true fir in upper elevations with grass and shrubs in lower elevations.

Significant Events

Moderate fire behavior with flanking, torching, and short crown runs. Somewhat lower humidity and southwest winds combined with higher temperatures will result in moderate fire behavior.


Planned Actions

Maintain efforts to hold, improve, and mop-up direct line construction from Poplar Flats to Slate Lake. Continue mop-up along War Creek fire line as fire continues to threaten line through roll outs and updrainage spread. Monitor fire activity along Abernathy Ridge, North Creek, Twisp River, South Creek, and Reynolds Creek drainages.

Projected Incident Activity

12 hours:

The Haines Index of 5 Thursday afternoon has led to increased control issues along Abernathy Ridge near Slate Lake. Fire behavior through the evening hours is expected to remain active tonight with areas of burning continuing adjacent to control lines.

24 hours:

Somewhat milder temperatures are expected on Friday with gust up to 15 MPH late in the afternoon creating areas of moderate fire behavior at the higher elevations. A Haines Index of 4 is predicted.

48 hours:

Saturday will see a slight decrease in temperature and a rise in relative humidity. Expect moderate fire behavior but isolated torching may still occur. A wind shift will occur late Friday in to Saturday. Winds will increase in the afternoon with gusts 15-20 mph.

72 hours:

Milder temperature persist with higher relative humidity resulting in continuing moderate fire behavior and slope driven fire spread.

Anticipated after 72 hours:

The warm weather pattern from the weekend persists along with a gradual increase in fire behavior.

Current Weather

Weather Concerns

Today's weather: Smoke filled the valleys again before noon. Temperatures warmed into the middle to upper 80s on the upper slopes and mid-90s in the Twisp River Valley. Afternoon humidity dropped into the teens by 1300. Winds were generally from the southeast and south up the major valleys in the area at 6 mph with justs to 12 mph. They will shift to the northwest or down valley after 1800, with speeds averaging 6 mph.

Tomorrow's weather: There will be slightly cooler temperatures and a few cumulus clouds. Temperatures will peak around 90 degrees over the lowest elevations of the fire and 75-80 degrees at higher elevations >5000ft. Relative humidity values will be around 20 percent with night time recoveries for

elevations >3500 remaining poor. Winds will be northwest down the major valleys increasing in late afternoon and evening generally 5-10 mph with gusts to 15 mph.