Fire officials say the blaze is threatening power lines as well as the communities of Hasley Canyon and Hathaway Ranch.

A wildfire in Southern California sparked early Thursday evening and grew quickly in size overnight. Hundreds of firefighters continue to fight the new Canyon Fire that has spread to around 5,370 acres.

A brush fire started on a sweltering day east of Lake Piru in Ventura County and led to evacuations as this week’s warm temperatures in Southern California reached their peak. The Canyon Fire was estimated at about 50 acres early Thursday afternoon before quickly spreading to more than 4,