More than 4000 firefighters are making progress in controlling California's largest wildfire on record, but the death toll is continuing to rise.

As a mechanic was helping to fight a separate blaze in the state, he was killed in a road accident

A further two firefighters have been injured and 119 homes destroyed by the fire.

Winds gusting up to 56km//h and temperatures above 32 degrees Celsius are forecast until Saturday in northern California.