[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.

[Tenacious 1]

The windows and garage door were damaged. There was no structural damage.

Many of the homes (they've said up to 30 total) will have to be demolished. Many of those houses have been either shifted off of their foundations or wracked in a way that has weakend the structure. Apparently, houses that just had their windows and garage doors knocked out, also are leaning and have drywall and ceilings down on the inside.