Comments by "Dr Gamma D" (@DrDeuteron) on "4K footage of Lebanon explosion shows Beirut Port blast unfolding in slow motion" video.

  1. it is low pressure condensation. The shock wave has a high pressure discontinuity (it is instant over pressure on the timescale of materials) and the a refractory negative (gauge) pressure for a millisecond or 2: that leads to condensation of waver vapor, AKA clouds. For the unfortunate firemen on scene., their compressed tissue undergoes a process called "vaporization upon unloading". The pressure drop is so fast it overcomes intermolecular forces and turns ppl into pink mist. Painless, but horrifying.
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