Use 'firestorm' to describe extreme wildfires that behave unpredictably due to intense heat. The news reported that the firestorm could be seen from space.
Pro Tip 2/3
Dynamic Intensity
'Firestorm' implies a fire of such intensity that it creates its own weather conditions. They couldn't escape the firestorm's powerful winds.
Pro Tip 3/3
Destructive Power
The term often conveys the devastating impact of such fires on nature and property. After the firestorm, the forest was completely destroyed.