noun
firestorm; fire whirl
A large, intense fire that creates its own wind system, often associated with wildfires or large-scale urban fires.
大規模な山火事で火災旋風が発生した。
A firestorm occurred during the large-scale wildfire.
火災旋風は、火災によって生じる激しい上昇気流が原因で起こる。
Firestorms are caused by intense updrafts generated by the fire.
Compound of 火災 (kasai, 'fire disaster') and 旋風 (senpū, 'whirlwind').