[Moonman62]

This seems to be more powerful than a typical gas leak explosion. The only similar explosion I can remember was when there was a gas leak that ignited at a muffler shop many years ago. That was probably acetylene.

[PA Engineer]

This seems to be more powerful than a typical gas leak explosion.

The housing construction here was very flimsy and compact. I am not surprised. There was a picture on another thread that showed a brick home nearby. The windows and garage door were damaged. There was no structural damage. The remainder of the homes had insulation sheathing with vinyl siding.

[_Jim]

This seems to be more powerful than a typical gas leak explosion.

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‘splain yourself.

The houses across the street were not flattened, but the WOOD STICK STRUCTURES adjacent were ... (did you WATCH or view any of the vids posted above even?)

Facts, man. Give me facts, not conjecture. I can get that anywhere ...

[Squawk 8888]

There was a similar explosion around here about 15 years ago that was caused by gas, the house that blew up pretty much disintegrated and some neighbouring homes were destroyed. All of the gas was inside the house so none of the neighbours smelled anything.

[_Jim]

Physics problem: work out for me, if you will, the amount of energy available for this ‘reaction’ assuming the Methane was within the Flammability limits as posted earlier and the hole is say 15’ deep by 3’ diameter:

http://www.youtube.com/watch?v=_MtCg-8v9W

We will use your answer and extrapolate that to a house filled with the same Methane gas mixture ...