There are a few challenging factors with the Delta Fire and where it's burning.
According to Operations Section Chief for the Delta Fire, Brian Rhodes, it's due to where the fire is located geographically, and the weather.
Rhodes said the fires are easier to control when they are on the top of ridges or down in drainages.
The problems that come with the fire is it's burning on steep, middle slopes that are challenging firefighters to hold the flames in that location.
The temperatures and wind direction in the Northstate also have a significant impact on fire behavior. Rhodes said many firefighting veterans haven't seen this type of behavior before.
"When the fire first started, it took 15,000 acres run in 12 hours. That is significant no matter where you are in the country," said Rhodes. "15,000 acres run in 12 hours in timber is pretty significant in terms of fire behavior. With that, the fire behavior that all these fires have been exhibiting in the Northstate this year has been, to say the least, way on the extreme end. A lot of the fire behavior, most of us that have a lot of fire experience, have never seen this type of behavior."