Thorn Fire
The Thorn Fire was reported on July 15, 2026 in San Diego County, California and burned 1,234 acres. It was fully contained on July 18, 2026.
- Size
- 1,234 acres
- Contained
- 100%
- Discovered
- July 15, 2026
- Personnel
- 52
Map
Perimeter mapped July 15, 2026 at 6:29 PM PDT, 1,226 acres (auto-generated for inform). Point of origin 32.691, -116.333.
The incident
- Size
- 1,234 acres
- Containment
- 100%
- Discovered
- July 15, 2026 at 3:39 PM PDT
- Contained
- July 18, 2026 at 6:00 PM PDT
- Controlled
- July 28, 2026 at 7:30 AM PDT
- Cause
- Undetermined
- Location
- 5 Miles N from Tierra del Sol, CA
- County
- San Diego County
- State
- California
- Nearest city reported
- Live Oak Springs
- Protecting agency
- CAL FIRE
- Land ownership at origin
- Private
- Personnel assigned
- 52
- Incident management
- Type 3 Team, Type 3 Incident
- Primary fuel
- Brush (2 feet)
- Estimated cost to date
- $4,888,339
- Incident type
- Wildfire
- Unique fire identifier
- 2026-CASDU-016203
- IRWIN identifier
- 03C8555B-5842-496F-B327-63DFF323756F
Growth
Mapped area at the last perimeter of each day, from July 15, 2026 (592 acres) to July 18, 2026 (1,226 acres). The largest one-day growth was 642 acres, mapped July 16, 2026.
| Day | Acres | Change |
|---|---|---|
| July 15, 2026 | 592 | |
| July 16, 2026 | 1,234 | +642 |
| July 17, 2026 | 1,226 | -8 |
| July 18, 2026 | 1,226 | 0 |
Weather in the area
This fire is no longer listed as current. The forecast for Jacumba Hot Springs, CA covers the area today.
Nearby
- Jacumba Hot Springs, CA10 miles southeast of the fire’s origin
- Campo, CA10 miles southwest of the fire’s origin
- Pine Valley, CA15 miles northwest of the fire’s origin
- Descanso, CA20 miles northwest of the fire’s origin
- Alpine, CA27 miles west of the fire’s origin
- Harbison Canyon, CA30 miles west of the fire’s origin
California wildfires today Wildfires of 2026 All current fires
Incident record from the National Interagency Fire Center’s Wildland Fire Interagency Geospatial Services (WFIGS), as the incident’s managers report it; last updated August 27, 2026 at 5:48 PM PDT. Identifier 2026-CASDU-016203.