California · incident record
Thorn Fire, California
1,234
Acres reported
—
Contained
0
Acres since yesterday
Last updated · refreshed every 15 minutes from the NIFC WFIGS feed · awareness only — follow local authorities
Update ·
As of Jul 20, 2026, 17:00 UTC, the Thorn Fire is no longer listed in the federal active-fire feed at 1,234 acres, in California.
No change in reported size since Jul 19, 2026, 16:45 UTC.
The most recent mapped perimeter (Jul 19, 2026, 03:23 UTC) covers 1,226 acres; the mapped perimeter has been updated 6 times since the fire began.
It was last present in the feed Jul 20, 2026, 17:00 UTC; the largest size reported was 1,234 acres. This page stays up as a record of the incident.
Thorn Fire map
The most recent mapped perimeter (solid) and the previous day's perimeter (dashed), with the reported point of origin.
Latest perimeter Previous perimeter · Perimeters come from the WFIGS interagency perimeter service and are usually mapped once a day; the mapped area can differ from the reported acreage.
Key facts
- Size
- 1,234 acres
- Containment
- not reported
- Status
- Not in feed (last seen Jul 20, 2026)
- Discovered
- Jul 15, 2026
- Location
- California
- Origin point
- 32.6911, -116.3329
- Perimeter mapped
- Jul 19, 2026 (30 days ago)
- Satellite heat, 24 h
- none matched
Nearest towns
Distances are from the reported point of origin, not from the fire’s edge (see the perimeter map for the current extent).
- Campo, CA
- Pine Valley, CA
- Descanso, CA
- Alpine, CA
- Harbison Canyon, CA
Other fires nearby
- Church 2 Fire
- 52 Fire
Thorn Fire daily history
The largest size and containment reported each UTC day, from our 15-minute archive of the federal feed (first seen Jul 15, 2026, 23:00 UTC).
| Day (UTC) | Reported size | Change | Contained |
|---|---|---|---|
| Jul 20, 2026 | 1,234 acres | 0 | — |
| Jul 19, 2026 | 1,234 acres | 0 | — |
| Jul 18, 2026 | 1,234 acres | 0 | — |
| Jul 17, 2026 | 1,234 acres | +33 | — |
| Jul 16, 2026 | 1,201 acres | +1,171 | — |
| Jul 15, 2026 | 30 acres | — | — |
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Thorn Fire questions, answered from the data
How big is the Thorn Fire?
As of Jul 20, 2026, 17:00 UTC, the Thorn Fire is reported at 1,234 acres. No change in reported size since Jul 19, 2026, 16:45 UTC.
Is the Thorn Fire contained?
Containment has not been reported for the Thorn Fire in the federal feed as of Jul 20, 2026, 17:00 UTC.
Where is the Thorn Fire?
The reported point of origin is at 32.6911, -116.3329 in California. Nearest towns: Campo (9.9 mi SW), Pine Valley (15 mi NW), Descanso (20 mi NW). The map on this page shows the most recent mapped perimeter.
Is the Thorn Fire still burning?
It is no longer in the federal active-fire feed; it was last listed Jul 20, 2026, 17:00 UTC. Fires drop out of the feed when the incident is closed or handed to local management, not necessarily when every ember is out.
Where do I find evacuation orders for the Thorn Fire?
From the county sheriff and local emergency management, not from this site. Check the official California sources on our California page and your county’s alert system. FireRiskHere is for awareness only.
How current is this page?
The numbers come from the National Interagency Fire Center's WFIGS incident feed and the WFIGS perimeter service, refreshed every 15 minutes, plus NASA FIRMS satellite detections hourly. This page was last updated Jul 20, 2026, 17:00 UTC. Acreage and containment are what the incident team reports and can lag by hours.
About this page
This page is generated automatically for every wildfire whose reported size reaches 1,000 acres, from FireRiskHere’s archive of the National Interagency Fire Center’s WFIGS incident feed (captured every 15 minutes), the WFIGS interagency perimeter service, and NASA FIRMS satellite detections. It stays online after the fire is contained as a record of the incident. Nothing here is an official notice — for evacuation orders and road closures follow your county sheriff and local emergency management. How the site works →