Fire crews in the Angeles National Forest are working around the clock to contain the massive Station Fire.
Because of the hot and windy weather conditions in the forecast for the next two to three days, officials have pushed back the containment date once again from Tuesday to Thursday.
The fire was 94 percent contained Tuesday evening.
Officials are concerned that wind gusts up to 35 miles per hour could carry embers from the remaining hot spots and spark a whole new fire.
Mount Wilson is being covered by another layer of Phos-Chek, and crews are on the ground patrolling the area. The north side of Mount Wilson is still vulnerable, as are many parts of the forest that have not yet burned.
Fire crews say they are planning for a worst case scenario.
"People shouldn't be surprised if they see more helicopters and more air tankers. It's nothing to indicate that there is a fire, or that anything has changed," said Stanley Berkowitz from the U.S. Forest Service.
"It's just more precautionary techniques being taken to keep ahead of anything that might potentially happen," he said.
The Station Fire is Los Angeles County's largest fire ever. It has burned more than 160,000 acres, roughly 250 square miles. The fire killed two firefighters and destroyed 89 homes. Officials say arson is the cause of the wildfire that started August 26.
The cost of fighting the Station Fire is calculated at more than $83 million.
Officials are also taking precautions in Malibu, the site of the wind-driven Corral Fire two years ago that destroyed nearly 50 homes.
The L.A. County Fire Department will have more firefighters working in Malibu while the red flag warning is in effect.
Crews are asking residents to make sure that they clear the brush around their homes.