A fast-moving wildfire has scorched 4,000 acres in Malibu, forcing 20,000 residents to flee as flames advanced on homes, horse farms and Pepperdine University.

The Franklin Fire, yet another late-year wildfire fanned by fierce Santa Ana winds, has left a trail of destruction as officials confirmed seven structures destroyed and nine damaged.

The cause of the fire remains under investigation. Meteorologists warned that even though the strongest winds in the area have passed, high fire dangers have decreased. That should aid efforts to contain the fire.

Evacuations have displaced thousands of residents, including celebrities such as Dick Van Dyke and Cher.

Malibu mayor Doug Stewart called it a “traumatic 20 hours” for the city, as emergency operations relocated to Calabasas after the city hall was threatened.

“It burns, it grows back, and we’re resilient,” Stewart said.

More than 1,500 firefighters are battling the blaze with many roads closed and others under security patrols.

At Pepperdine University, 3,000 students sheltered in place as smoke and embers engulfed the campus. “Ash was everywhere, embers were everywhere,” said a student, Bethany Kronlund.