Amid an extended red flag warning, the Hughes fire exploded north of Castaic on Wednesday and quickly grew to more than 9,400 acres. About 31,000 people in areas surrounding the fire were under evacuation orders.

The fire threat remains critical in Southern California, where thousands of residents were under evacuation orders Wednesday as fire crews battled the out-of-control Hughes Fire near Castaic, a suburb in the foothills and mountains of northern Los Angeles County.