The Carr fire has burned nearly 104,000 acres (42,000 hectares) since July 23, according to the California Department of Forestry and Fire Protection (Cal Fire).
At least six people, including two firefighters have died.
Thousands of people have also lost their homes.
The Cal Fire website has said “mechanical failure of vehicle” is the cause of the deadly infernos.
Temperatures also reached 45C (113F) in Redding last week.
Now an enormous vortex of fire and smoke has made its way through Carr on Thursday, July 26.
What is a firenado?
Fire whirls, also know as fire tornadoes or fire devils, often erupt of large wildfires.
They are similar to a whirlwind and occur when hot, dry air rises quickly from the ground.
This then forms a vertical column until it reaches cooler air higher up in the atmosphere.
As more flames and hot air get pulled into the column, it starts to swirl into a vortex which pulls burning embers, hot gases and debris with it.
This creates a dangerous tower of flames.
Most firenadoes are a few hundred feet high and last minutes or even seconds.
But the fire near Redding reached a colossal 18,000 feet (550 metres) and lasted nearly an hour, according to California’s KQED TV station.