More than 15,000 acres (6,000 hectares) have been scorched by the twin blazes burning near San Fernando and Porter Ranch on the northern outskirts of Los Angeles, which have roared through tinder-dry countryside in 48 hours.
One person has been killed and at least 4,000 people are estimated to have been evacuated, prompting California Governor Arnold Schwarzenegger to declare a state of emergency in the region on Monday.
As dawn broke on Tuesday, firefighters said the fire in Porter Ranch had almost doubled in size to 9,872 acres and remained uncontained.
“We are prepared for whatever Mother Nature throws at us,” Los Angeles Fire Department spokesman Brian Humphrey said. “It depends on the winds. In this situation, wind is king. The winds could even be benevolent.” The National Weather Service has predicted that winds — packing speeds of up to 70 mph (113 kph) — will continue gusting until Wednesday.
At the other major fire blazing 15 miles east near San Fernando, flames had destroyed around 5,000 acres and gutted 38 mobile homes, officials said.
However a lull in overnight winds allowed firefighters to gain the upper hand over the blaze, which was 70 per cent contained, up from only five percent late Monday, Los Angeles County Fire Captain Mark Savage said.
“So far, so good, but we’re not done yet,” said.
Authorities say 1,200 people have been evacuated from the two fires but several more neighborhoods were ordered to leave their homes later Monday and the number of evacuees may rise.
The exact causes of the two fires are unknown. They are among several burning across southern California which have broken out since Sunday.
The biggest of the other fires was burning near the US Marine Corps’ sprawling Camp Pendleton base outside San Diego, where 3,000 acres had gone up in flames and more than 1,000 homes had been issued with evacuation orders.
The fire was 25 per cent contained early on Tuesday.
California is frequently hit by scorching wildfires due to its dry climate, Santa Ana winds and recent housing booms which have seen housing spread rapidly into rural and densely forested areas.
The latest fires comes roughly one year after devastating wildfires that were among the worst in California history left eight people dead, destroyed 2,000 homes, displaced 640,000 people and caused one billion dollars in damage.
In June and July this year, a series of about 2,000 fires raged across the state, scorching some 900,000 acres (3,500 square kilometres) of land, according to officials.—AFP