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[–]zyxzevn 2 insightful - 2 fun2 insightful - 1 fun3 insightful - 2 fun -  (3 children)

No. There is no "flash".
Here is an overview https://imgur.com/gallery/Tptup with flash and shock-wave.

The explosion in the video is possible a fuel-air explosive. Or secondary explosions.

Remember Massive explosion in Tianjin , China 2015?
https://i.imgur.com/WnHNjeX.mp4
The air fills with very flammable material, which then explode suddenly.
That is how secondary explosions can be immense.

[–]JasonCarswell 1 insightful - 2 fun1 insightful - 1 fun2 insightful - 2 fun -  (2 children)

A swarm drones releases fuel for a thermobaric explosion that injures my protagonist and blows up his house killing his family in my Bittersweet Seeds story.

[–]zyxzevn 2 insightful - 2 fun2 insightful - 1 fun3 insightful - 2 fun -  (1 child)

I think thermobaric bomb has 2 explosion stages. One explosion spreads the fuel. The second ignites it.
I saw some real-world demonstrations from behind-the-press and some other channels.

[–]JasonCarswell 1 insightful - 2 fun1 insightful - 1 fun2 insightful - 2 fun -  (0 children)

Oh, that's fascinating and makes sense.

In my story a swarm of drones quickly penetrates a house, spread out, spin & spray, then boom.