Man, did we have some bad hail storms last night. The building in which I work is basically a big metal box, so imagine pellets of ice hitting the roof and sides over and over again. The building roared.
Here's what, to me, it sounded like:
If you've ever travelled the Tube in London, remember standing on one of those totally enclosed "bomb-shelter" platforms when there's a train approaching the station fast? Just before you hear the squeal of the tube's brakes going on, there's this ... roar. It's a combination of the noise the train makes on the tracks and the great big wall of air that it's pushing in front of it.
Like that, but twenty times louder.
When I went outside there were actually drifts of hailstones.