Ranch Fire initially started 2:33 p.m. June 10 in San Bernardino County. It has burned 4,293 acres after being active for 39 hours. As of Thursday morning, the fire crew managed to contain 40% of the fire. However, investigations into the cause are ongoing.

Ranch is California’s second-largest wildfire since January, when fires burned about 50,000 acres in Los Angeles County.

Crews are racing to contain and extinguish a wildfire that broke out in Southern California on Tuesday, exploding in size in a matter of hours and forcing people to flee their homes.