Rising temperatures pose new challenges for firefighters who have made incremental progress against a massive wildfire in central California that has injured four people as it has become the biggest blaze in the state so far this year.

More than 800 structures are being threatened by a massive wildfire burning through Los Padres National Forest in central California

The Gifford Fire, a wildfire burning in Central California that has destroyed over 83,000 acres in six days, continues to rage and is now the largest blaze in the state this year, according to Cal Fire.