Fire crews from Ventura and Los Angeles counties are battling a rapidly growing vegetation fire in Holser Canyon, near Lake Piru, in 100-degree heat. The blaze, called the Canyon Fire, is estimated to be at 1,

The Canyon fire has grown to roughly 1,051 burned acres near Val Verde, straddling Los Angeles and Ventura counties, according to Watch Duty. Officials also issued less-severe evacuation warnings for parts of the area.

A rapidly growing wildfire straddling the Ventura-Los Angeles county line Thursday afternoon triggered evacuations in and around Piru and Castaic amid a major heat wave that officials warned could foster extreme fire growth and behavior.