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.

A massive wildfire on Monday was threatening hundreds of homes in central California after injuring at least three people as it tore through Los Padres National Forest. The Gifford Fire scorched more than 100 square miles (260 square km) of coastal Santa Barbara and San Luis Obispo counties,

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.