Strange Rumbling

I just had the strangest thing happen. So I must share.

There is a thunderstorm brewing. And we've had some rumbling.

A few minutes ago, we had a nice long rumble. Followed by the ear piercing sound of glass breaking. I went to the cupboard and found this:

A glass, that to my knowledge, had no visible cracks was sitting there--broken.

Has anyone experienced anything like this before?