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Residents in some Holy Fire burn areas of Trabuco Canyon are under a voluntary evacuation order due to an increased possibility of mud and debris flows as rain hit the region Wednesday.

The order was issued Tuesday night for the Trabuco Creek, Rose Canyon and the Mystic Oaks/El Cariso areas.

The Orange County area is expected to receive about an inch of rain Wednesday, with up to 2.5 inches possible in the mountains, according to the National Weather Service.

Officials are especially concerned about the potential for afternoon thunderstorms to bring intense showers.

Downpours could result in flash flooding and debris flows in the recent burn areas.

Hillsides in Trabuco Canyon were left bare following the 23,000-acre Holy Fire, which burned in parts of Orange and Riverside counties last year.

Residents can check the Orange County Sheriff’s Department website for evacuation order updates.

Voluntary evacuation zones are seen in this map posted on the Orange County Sheriff's Department's website.
Voluntary evacuation zones are seen in this map posted on the Orange County Sheriff’s Department’s website.