Updated:  More Unexplained Boom Sounds from Sweden to Calif: What’s Happening Now in Sacramento?  And What Happened August 21st In Oakland, California?

From:  Lonsboda, Sweden
Subject: Mysterious Boom Sounds
Date: August 26, 2012
To: [email protected]

"Hello!
I was reading your article on the mysterious explosion-like boom's that have occurred in the USA recently. I would like to report another one, but this time in the south of Sweden, near the town of Lönsboda. I would describe the sound as distant, if not underground.