I just saw on the news that it wasn't one transformer that exploded (or at least, not a normal sized transformer), but a transformer substation, which I believe

I just saw on the news that it wasn't one transformer that exploded (or at least, not a normal sized transformer), but a transformer substation, which I believe means multiple transformer units, maybe. I'm guessing that, and our relative nearness to it explains why it seemed to fill the entire sky. Either way, yeah, it was trippy. I've never seen the like.