Hurst Fire initially started 10:29 p.m. Jan. 7 in Los Angeles County. It has burned 771 acres after being active for 45 hours. As of Thursday evening, a fire crew of 300 succeeded in containing 37% of the fire. However, investigations into the cause are ongoing.

Firefighters say that the fire is moving with a "rapid rate of spread," prompting evacuation orders for 3,000 Sylmar residents.

Three of the largest fires — the Palisades Fire, the Eaton Fire and the Hurst Fire — have resulted in evacuation orders and warnings.