[masraum]

Originally Posted by Bob Kontak

In OP's second video the Venetian blinds start to smoke as does the paint on the houses before the blast wave gets there.

What are the forces that cause that?

I noticed that as well, sometimes the amount of smoke was greater than others, I assume due to proximity.

My assumption is that the shockwave is travelling at the speed of sound, but the radiation and radiant energy is closer to the speed of light.