Loud Popping Sound & Flash Of Light?

Question

Here's an odd thing, maybe someone knows what it might be? This is taking place in an empty lot by my house on a regular basis, day and night. For the last few months.

There is a loud popping sound, and a flash of light (at not not during the day) that sounds like something exploding. But there is nothing in the field. No kids setting off fire works or anything.

Its been happening daily, we have investigated, and their is nothing there. It only happens as one pop, and it happens at various times of the the day.

I thought the first few times it was a transformer box (Not the movie kind, but the kind that passes electricity) but the one in the field is fine, and the electric company had checked it.

It no longer startles us that much, we are now more curious than anything.

Answer 1

Very strange. I would have guessed electricity as well. Is it possible there is an underground cable there?

Is it affected by the weather at all?

Edit:

OK, my next guess would be the gas phosphine that spontaneously combusts in air. If the ground there is marshy, then it could be a will-o-the-wisp, a combination of methane and phosphine from decaying matter. If not that, then is it possible that there are some chemicals buried there? Phosphorus and metal phosphides (zinc phosphide is used as rat poison) could release phosphine. Phosphine in canisters is also used for fumigation.

It has a strong distinctive smell like garlic.

If none of these is possible, then I think you will have to post in the paranormal phenomena section!