At this time, I say fairy flash fire.

这时，我对火闪仙女这样说。

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Flash fire - the combustion of a flammable gas or vapor and air mixture in which the flame propagates through that mixture in a manner such that negligible or no damaging overpressure is generated.

暴燃-可燃气体或蒸汽及空气混合物的燃烧，火焰通过混合物传播，产生了可以忽略的超压或不会造成损坏的超压。

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They saw a big flash and a huge ball of fire reaching hundreds of feet into the sky.

他们看到一道强光和一个巨大的火球直冲天空达几百英尺。

《柯林斯英汉双解大词典》

Gus Grissom, Ed White, and Roger Chaffee were killed in the capsule of Apollo 1, when a flash fire ripped through their cabin.

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Static electricity could cause a small spark when a petrol pump nozzle is inserted which could in turn ignite fuel vapour in a flash fire.

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Forensic scientists told the inquest it appeared Mrs Philpotts died in a flash fire after her badly burned body was found near a petrol can.

BBC: House fire scene