Explosions

Yesterday around 3:30 PM there was a loud explosion like sound that shook my entire house. You can read a bit more about it at LOWFI, but if anyone else in Albuquerque noticed it (I don't know how you couldn't) and especially if you know what it was - please, comment here or email me. I can't find any mention of it in the news and I would really like to know what it was.