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.

The Hughes Fire in Castaic area has burned more than 9,400 acres in just hours. While Los Angeles County Fire Chief Anthony Marrone called it a "difficult fire," he said that crews are "getting the upper hand on containing the blaze."

The fast-burning Hughes Fire prompted evacuations on Wednesday morning after it was reporting burning near Castaic Lake in Los Angeles County. (Source: KTTV)

Firefighters battled two new brush fires - the Hughes Fire near Castaic Lake and the Sepulveda Fire in Bel Air, along the 405 Freeway.

A large brush fire that erupted near Interstate 5 in Castaic has burned more than 9,000 acres, causing several evacuation orders and warnings Wednesday morning.

A fast-moving brush fire raced across thousands of acres of thick vegetation near Castaic Lake Wednesday, forcing mandatory evacuations in the lake area and into the heart of Castaic, with warnings stretching toward Santa Clarita and reaching the Ventura County line.

A fast-moving brush fire raced across thousands of acres of thick vegetation near Castaic Lake Wednesday, forcing mandatory evacuations in the lake area and into the heart of Castaic, with warnings stretching toward Santa Clarita and reaching the Ventura County line.

A homeowner in the North Lake neighborhood of Castaic describes what he witnessed as the Hughes Fire moved closer to his home.

A brush fire ignited near Castaic Lake amid windy and dry conditions Wednesday afternoon, forcing evacuations in the area as the blaze quickly grows.

A fast-moving brush fire rapidly exploded across thousands of acres of thick vegetation near Castaic Lake, prompting mandatory evacuations in the lake area and into the heart of Castaic, but while high winds push the flames,

The Hughes Fire near Castaic, California, has burned over 5,000 acres, prompting evacuations and school closures.