A wildfire is quickly spreading across northern Los Angeles, and evacuations have been ordered for hundreds of residents. Several homes have already burned.

Los Angeles Fire Chief Donald Frazeur warned residents Saturday morning to leave their homes, noting that fierce winds is spreading the fire at a dangerous pace.

The fire was sparked about 10:30 p.m. at a park in Sylmar in the San Fernando Valley and quickly spread to 100 acres in an hour, city Fire Department spokeswoman Melissa Kelley said.

Television footage showed embers flying in the dark and several homes engulfed in flames.

Dorothy Boyer, who lives near where the fire started, told the Associated Press she could see the flames from her home.

"I'm just leaving, now. I can see the smoke. It's terrible, I'm going to take my dog and go," Boyer said before hanging up.

Los Angeles County was under a red flag warning of extreme fire danger. Winds were gusting up to 60 mph in the Sylmar area and they weren't expected to let up for several hours, National Weather Service meteorologist Jamie Meier said.

The cause of the fire was under investigation. No injuries were reported.

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