A new fire broke out near Los Angeles’ Bel Air neighborhood early on Thursday as the Hughes fire which was first reported a day earlier in northern Los Angeles County grew rapidly to set ablaze more than 10,000 acres, prompting authorities to issue evacuation orders and warnings to more than 50,000 people.

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.

Dangerous winds returned to the region Tuesday as new wildfires broke out in San Diego and a pair of major Los Angeles-area blazes burned for a third week, while officials made preparations to protect scorched neighborhoods from toxic ash runoff ahead of potential rain this weekend.