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.

As the sun began to set over Castaic Lake on Wednesday, the hills to the north and east were engulfed in flames, casting an eerie orange glow across the valley below.

A fast-moving brush fire erupted in Los Angeles County on Wednesday morning, quickly racing across 1,000 acres of terrain, aided by heavy, dry fuels and pushed by gusting Santa Ana winds.