Even though no one else was around to experience this, I do have proof that it was earth-shattering, or, at the very least, glass-shattering.
I'll have to do a little re-creating here, but bear with me. I had a glass with an asparagus plant sitting on a ledge in the enclosed porch area. It looked something like this:
The glass is fairly sturdy, and the ledge is not very high.
The next day, (the storm was at night, and it was dark outside), this is what I found:
This was the biggest piece. It's not a great photo, but you can kinda see how the glass shattered inside itself.
In my re-creation, I really wanted to knock the glass onto the floor, just to see what would happen, but I didn't want to risk losing another glass. They have broken before, but never shattered quite like this!
