Officials in California on Sunday extended an evacuation order to 180,000 residents as strong winds fanned the Kincade fire.

The order covers sections of of Santa Rosa, a city that was itself adversely affected by a wildfire two years ago.

Electricity was also switched off for an estimated 2.3 million people as from Saturday evening in an effort to prevent more fires.

Residents in the evacuation zone have been urged by authorities to leave immediately amid reports that some people said they would remain to help battle the fire.

The wildfire ignited on Wednesday night and exploded very fast, scorching over 25,455 acres (103 square kilometers) by Saturday morning with only 10 percent containment, according to California Department of Forestry and Fire Protection (Cal Fire).

The blaze destroyed 79 structures and is now threatening thousands of homes, Cal Fire said. There are no reports of fatalities.

Just 10% of the raging fire has been contained.

Cal Fire had said residents in the evacuation zone needed to be out of their homes by 4 p.m. Saturday local time since the fire could reach the towns by Saturday night.

California Governor Gavin Newsom Friday declared a state of emergency for Sonoma county, where the Kincade Fire is burning.