Ambiguous noise

I was so puzzled by the rumbling loud noises in the middle of this wildly windy night, following a day when it poured non-stop, that I actually went to the internet to see whether it's thunder or fireworks. I checked first for flashes of light against the night sky, of course, but I don't know why: unless I'd spotted a particularly colourful one, it would not have determined which phenomenon I was witnessing. I think it must be fireworks. Cannon Hill Park is close enough to where I am in Birmingham for me to hear them, and too far away to see them. I'm just amused that I actually looked it up and found it, online. Ah, modern life.