Fire Update for August 13, 2026

There are eight new wildfire starts in Yosemite National Park, all attributed to early morning lightning on August 12, 2026. No site closures or evacuations have been implemented at the time of this update.

Aspen Valley Area

Ackerson Fire

Location: Less than 1 mile west of Aspen Valley
Elevation: 6,300 feet
Discovery Date: August 12, 2026
Cause: Lightning
Size: 1.5 acres
Status: 50% Contained - Staffed YNP E63, CNF E338

Long Fire

Location: 1 mlei south of Aspen Valley
Elevation: 6,000 feet
Discovery Date: August 12, 2026
Size: 1/10 acre
Status: Contained - Unstaffed

Glacier Point Road Area

Grouse Fire

Location: Grouse Creek, less than 1 mile from Wawona Road
Elevation: 6,000 feet
Discovery Date: August 12, 2026
Size: 2 acres
Status: 30% contained - Staffed Hollister Helitack, STF Crew 91

Steamboat Fire

Location: Grouse creek drainage top 1/3, less than 1 mile from Wawona Road
Elevation: 6,900 feet
Discovery Date: August 12, 2026
Size: 1/10 acre
Status: Uncontained - Unstaffed

Crocker Fire

Location: Meadow Brook drainage, less than 1 mi from Inspiration trail
Elevation: 7,000 feet
Discovery Date: August 12, 2026
Cause: Lightning
Size: 1/10 acre
Status: Uncontained - Staffed ANF E326

Dewey Fire

Location: Dewey Point adjacent
Elevation: 7,300 feet
Discovery Date: August 12, 2026
Cause: Lightning
Size: 1/10 acre
Status: Uncontained - Unstaffed (fire located over cliff edge)

McGurk Fire

Location: 1/4 mlei east of Dewey Point, north of Inspiration Trail
Elevation: 7,000 feet
Discovery Date: August 12, 2026
Cause: Lightning
Size: 1/10 acre
Status: Uncontained - Staffed STF C91