Current as of

7/11/2022, 6:41:42 PM

Incident Type

Wildfire

Cause

Under Investigation

Location

Southern portion of Yosemite National Park;

Incident Commander

Josh Boehm, California Interagency Incident Management Team 13.

Incident Description

Managed for Full Suppression.

Coordinates

37.499 latitude, -119.614 longitude

Total Personnel

545

Size

2,720 Acres

Percent of Perimeter Contained

25%

Fuels Involved

Heavy accumulations of available dead surface fuels with ample snags and concentrations in an old-growth forest condition. Fuels are primarily large timber with an understory of young conifer and shrubs. Very deep duff and accumulation of timber litter (branch wood and needles) dominate the forest floor.

Recent large fire scars in the area include woody materials and recent shrub growth

Significant Events

Moderate Fire Behavior Observed, including Long-range Spotting, Group Torching and Backing.

Planned Actions

Continue direct handline construction where possible and prepare for indirect line when needed. Utilize offensive firing operations along primary control lines when appropriate. Defend Wawona Point and the Community of Wawona. Protect Mariposa Grove. Establish contingency lines through Long Valley to Star Mine

Projected Incident Activity

12 hours: The continued warm and dry conditions produced active-to-very during the day that will extended into the night due to poor relative humidity. Significant activity was observed on the northwest and northeast corners of the fire south of the S. Fork. Merced River. Light winds are allowing sustained backing on slopes, flanking, and torching with spotting. Downslope and down drainage wind flow will provide smoke in the valleys especially during the night.

24 hours: Warming and drying will continue to provide active fire behavior throughout the period, with the burn period extending into the nighttime hours due to low relative humidity. Light winds will provide sustained backing on slopes with flanking, torching, and spotting. Continued fire spread may be expected on the east side of the fire in the South Fork Merced River drainage.

48 hours: Warm and dry conditions combined with poor-fair nighttime relative humidity will produce conditions for active to very active fire behavior on uncontained portions of the fire perimeter. Expect sustained backing, active flanking, more frequent torching with spotting, and short headfire runs likely.

72 hours: Increased warming and drying that will maintain active to very active fire behavior potential. Likely increase in fire behavior to include group torching, short torching/crown runs on wind aligned slopes, and spotting to .5 miles Anticipated after 72 hours: Peak warming and drying period late in the week will provide active to very active fire behavior on uncontained portions of the fire.

Weather Concerns

Synopsis: Strengthening high pressure will lead to a warming and drying trend through mid-week. Smoke will continue to impact the region due to building high pressure and weaker transport flow. Overall winds will be light to moderate and mostly terrain driven.

Observed Weather Conditions July 11, 2022: Wind Speed / Max. Gust Sustained 3-8 mph gust 15 mph Temp Highs 84-89 Direction South RH 20-25%

Forecasted Weather for Next Operational Period July 12, 2022: Wind Speed / Max. Gust Sustained 3-8 mph gusts to 15 mph. Temp Highs 84-90 Direction Southwest RH 20-30%