THORN Fire (CA)

Active · 1,201 acres · started 2026-07-15 · updated 2026-07-16

True color Fire (SWIR)

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True color (left): as the eye sees it.
Infrared / SWIR (right): sees through smoke.

🟢 green = vegetation
🟤 red/brown = burned
🟠 orange = active fire

Imagery: Sentinel-2 (Copernicus). Drag to compare smoke vs. infrared.

Heat detections: NASA FIRMS (last 48h).

The THORN Fire has consumed 1,201 acres of private land in San Diego County, California, since igniting on July 15, 2026. Currently classified as active, the blaze continues to challenge containment efforts within the region.