The Thorn Fire burns near Buckthorn Trail and Clover Trail in the Boulevard/Campo area of southeastern San Diego County on Wednesday, July 15, 2026. Fueled by hot, dry conditions, the wildfire spreads rapidly, prompts evacuation orders and warnings, temporarily closes portions of Interstate 8, and draws a large response from Cal Fire and local agencies. Firefighters on the ground, supported by air tankers and helicopters, work to slow the fire's advance and protect nearby homes and infrastructure as officials monitor changing fire conditions.