Officials say the massive wildfire that California has been battling since early December is now the third-largest in the state's history, with 259,000 acres burned so far and the flames only 40 percent contained.

In terms of acreage consumed, the fire that started on Dec. 4 now exceeds the devastating Rim Fire in 2013 by 2,000 acres, officials said Saturday.

Steve Concialdi of the Orange County Fire Association says the region has had "red flag" conditions for an unprecedented 13 consecutive days. Red flag conditions are when low relative humidity is combined with gusty, strong winds.

Concialdi said, "As of this morning, we're at 259,000 acres and still growing."