A fast-moving wildfire exploded to roughly 10,200 acres near the Los Angeles County community of Castaic Wednesday morning, prompting mandatory evacuation orders and road closures, authorities said.

Mark E. Potts is the senior editor for video at the Los Angeles Times. A native of Enid, Okla., Potts graduated from the University of Oklahoma with a master’s degree in broadcast journalism. He has created and edited video for DreamWorks, YouTube, Microsoft, Sony and BET.

The Hughes Fire broke out around 10:45 a.m. near Castaic Lake, off Lake Hughes Road just north of Castaic Reservoir Road, before growing to 500 acres within an hour, authorities said. By 12:30 p.m., less than two hours after first being reported,