California wildfires that broke out last month have been expanding exponentially - what once had been seen as a once-in-a-lifetime occurrence, now takes just days to produce a devastating effect.
As of Wednesday, the fires burnt down a record 2.3 million acres of land, compared with 118,000 acres at this point last year. The wildfire in Plumas National Forest northeast of San Francisco spread 25 miles in a single day, according to estimates.
"We have seen multiple fires expand by tens of thousands of acres in a matter of hours, and 30 years or more ago that just wasn't fire behaviour that we saw," Jacob Bendix, a professor of geography and the environment at Syracuse University who studies wildfires, said.
According to an update by the California Department of Forestry and Fire Protection (Cal Fire), more than 14,100 firefighters are continuing to battle 24 major fires in California.
Earlier this week, California Governor Gavin Newsom issued emergency proclamations for several counties, and declared a statewide emergency on August 18. US President Donald Trump approved a major disaster declaration for California on August 22.