So far, all of the news articles I've read on this blast have said that the authorities still have no idea what caused it. Obviously, there was a fuel source. It could have been a properly installed bulk tank that started leaking, it might have been some spare 20 pound tanks stored in a basement corner. No one knows for sure just yet. The reason I started the thread was to remind us all that we need to make sure we store our spare fuel safely.
In reading a story like this one, most will think of the kids that died, a family torn apart, someone's home destroyed, but seeing the photo of it really lets you know how devastating that blast was. That blast cleared that house down to the top of the foundation walls! Can a single 20 pound propane tank do that?
I'm sitting here looking at the photo thinking there's enough space out at the rear of the property for storing fuel, either in a shed or some type of reinforced covered pit that would help contain the blast or, at least, redirect it's energy straight up.