South Fork Fire

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South Fork Fire


Approximate Location

37.538 latitude, -119.598 longitude

Incident Overview

South Fire North End

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Fire remains quiet near the community of Wawona on the west and south flank of the fire. Sections of the north flank and the entire east flank are continuing to burn in the wilderness.

There may be some burning well interior and visible smoke with increased winds due to the storms. The fire will be monitored by aircraft and fire lookouts. As fire burns into the high country wilderness it will burn actively through pockets of dense vegetation but will then slow down as it progresses into sparse vegetation and natural granite barriers limiting smoke production. This high country wilderness area has minimal values at risk. Fire and surrounding area received snow and rain on 9-21.

Overall air quality will likely remain in the good/moderate range throughout the Yosemite area today and through this coming week. Stronger westerly winds will likely come through tomorrow afternoon and probably remain through Thursday. Wednesday is likely to bring some light precipitation even cooler temperatures throughout the week, morning smoke in the canyons will still be possible but likely less intense. Fire Managers are working with the local Air Quality Districts and will be monitoring smoke impacts to the park and local communities.

Basic Information

Current as of
Incident TypeWildfire
Date of OriginSunday August 13th, 2017 approx. 02:30 AM
Location.75 mile east of the community of Wawona
Incident CommanderGreg Jones, ICT3
Incident DescriptionSupression

Current Situation

Size6,970 Acres
Percent of Perimeter Contained47%
Fuels Involved

Timber (Litter and Understory) Brush (2 feet)

Fuels with-in the fire vicinity are mixed conifer, red fir, oak, and brush. In the immediate area the fire is experiencing quick drying trends. Fuels contain areas of beetle mortality.

Significant Events

The following trail and area closures are in place until further notice:

•The Swinging Bridge Trail on both the north and south sides of the South Fork of the Merced River.

•The Chilnualna Falls Trail from Wawona Trailhead to the top of Chilnualna Falls.

•The two mile connecting trail heading north from the top of Chilnualna Falls to the intersection of the Buena Vista Trail.

•The Chilnualna Creek Trail from the top of Chilnualna Falls east to the intersection of the Buena Vista and Buck Camp trails (Just east of Johnson Lake).

•Turner Meadow Trail

•Turner Meadow intersection east to Buena Vista trail

•Off-trail areas in the vicinity of the South Fork Fire Area, including the swimming holes north of Chilnualna Creek.

• All climbing routes on and around Wawona Dome are closed.


Planned Actions

Continue to patrol control lines and monitor fire movement and behavior.

Projected Incident Activity

12 hours:

Fire will continue to back on the South and East Flanks.

24 hours:

Fire will continue to back and flank on the South and East flanks.

48 hours:

Fire will continue to back and flank on the South and East flanks.


After 9/11/2017, 209 submissions will be each Thursday by 1800 hours.

Current Weather

Weather Concerns

Cooler temperatures and increasing relative humidity is moderating fire behavior. Rain and snow were received on the fire 9-21

Unit Information

NPS Shield
Yosemite National Park
National Park Service
P.O. Box 577
Yosemite National Park, CA 95389

Incident Contact

Yosemite Fire Information
Phone: 209-379-1493
Hours: message line

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Related Incident Links

Incident Cooperators

  • Mariposa County Sheriff

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National Wildfire Coordinating Group U.S. Forest Service Bureau of Land Managemen Bureau of Indian Affairs Fish and Wildlife Service National Park Service National Association of State Foresters U.S. Fire Administration
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