The Sandy Fire in Simi Valley forced more than 17,000 residents to evacuate after a fast-moving wildfire broke out in Ventura County, California, south of Los Angeles.

The fire was reported at around 10:00 AM local time on Monday, May 18, 2026, in the hills above Simi Valley. By the morning of Tuesday, May 19, 2026, the blaze had burned more than 1,300 acres, with CAL FIRE reporting about 1,386 acres affected as dry brush and strong winds pushed flames toward nearby neighborhoods.

Ventura County Evacuations Affect Simi Valley and Nearby Areas

Authorities issued evacuation orders and warnings across Simi Valley and nearby communities, including areas near Thousand Oaks. Emergency shelters were opened as smoke spread through neighborhoods and helicopters dropped water on the advancing flames.

Officials said the fire threatened residential areas, forcing crews to focus on protecting homes, keeping emergency routes open and slowing the fire’s movement through dry vegetation.

At least one home and another structure were destroyed, according to officials. More than 200 firefighters, supported by aircraft, worked through the night as wind gusts topping 30 mph created dangerous fire conditions.

Cause of Sandy Fire Remains Under Investigation

The cause of the Sandy Fire remains under investigation. Reports of a possible accidental spark involving a tractor striking a rock while clearing brush have not been confirmed by officials.

Improved overnight conditions helped firefighters slow the fire’s growth by Tuesday morning, May 19, 2026. Some evacuation warnings were lifted in Ventura County, but several neighborhoods remained under evacuation orders as crews continued building containment lines and checking hotspots.

The Sandy Fire remains a major concern for Southern California residents because it shows how quickly wind, dry brush and warm conditions can turn a local brush fire into a large evacuation emergency near populated communities.