The death toll climbed to six, and authorities anxious that another forecast for high winds could fan the flames even further.
With summer winds fanning the flames of the California fires, causing some blazes to grow and others to merge, these two dynamic maps are worth bookmarking, so you can stay up to date with the latest updates from affected areas in Northern California as well as Southern California.
"Right now, it's going everywhere".
Mr Williamson said the firefighters had a lot to do before departing for the USA on Friday and could expect an extremely challenging scenario once they had boots on the ground in the fire zones.
Hot conditions and erratic winds have hampered firefighting efforts, said Los Angeles Times, and a red flag warning and heat advisory will be effective till Monday.
Anna Noland, 49, was evacuated twice in three days before learning through video footage Saturday that the house she last saw under dark and windy skies had burned. I think at the moment we're a little bit at the mercy of Mother Nature.
Jacque Chase, an urban planning expert at California State University Chico, said USA government statistics show more homes are going up across the country in areas that sit on the boundary of urban areas and undeveloped land.
A vehicle problem ignited the fire Monday, but it wasn't until Thursday that the fire exploded and raced into communities west of Redding before entering city limits.
Officials battling the blaze told the news conference in Redding they were feeling more optimistic on Sunday afternoon and starting to gain ground on the Carr Fire.
Jose Mourinho launches impassioned defence of frustrated Alexis Sanchez
All I can say is that we will try everything we can to be as successful as possible and in the end we will see'. It helps them to understand the game. "It was better than I would have expected, to be honest".
Google's 2018 Statewide Fire Map for California lists all the active fires in the state for which California Department of Forestry and Fire Protection (CAL FIRE) is responding. A count by The Associated Press found at least 300 of those structures were homes. The fire, which started on Monday, also killed Don Ray Smith, an 81-year-old bulldozer operator who was working with fire crews to try to bring the fire under control, officials said.
Jeremy Stoke, a fire inspector with the Redding Fire Department, died Thursday, the Redding firefighters union said. Authorities were also investigating seven missing persons cases.
Shasta County Sheriff Tom Bosenko later confirmed the discovery of three bodies at a fire-ravaged home on the outskirts of Redding. Officers have gone to homes of several people reported missing and found cars gone - a strong indication they fled.
The Carr Fire is one of more than a dozen wildfires burning across California during a hotter-than-average summer that has driven thousands of people out of their homes. The flames were just five per cent contained, though Gouvea said he expected that number to climb.
About 100 miles (160 kilometers) southwest of Redding, two blazes that prompted mandatory evacuations in Mendocino County burned largely unchecked.
Firefighters continued throwing resources into containing the Carr Fire, which has engulfed 95,368 acres and forced the evacuation of some 38,000 people.
"There are just places were there should not be subdivisions", said Kurt Henke, a former fire chief in Sacramento who now serves as a consultant to fire organizations.
Fire officials near Redding expanded their evacuation orders Sunday.
The blaze, which was 17% contained Sunday evening, was mostly burning north into remote and inaccessible areas. Those blazes had burned almost 100 square miles (260 square kilometers). Yosemite National Park remains closed while thousands of structures are threatened.