[Jack Hydrazine]

And what about this?

Part 7: Mysterious Loud Booms In At Least 15 States Since Jan. 1st.
https://www.earthfiles.com/news.php?ID=2274&category=Environment

[GBA]

Here's a few more:

February 24, 2015
Bombs or birdshot? Mysterious booms fill the skies over central North Texas

January 13, 2015
Scientists Baffled By What Is Causing Mysterious Booms Being Reported Across the Country

January 9, 2015
Mysterious booms rattle homes, scare livestock in Oklahoma

November 16, 2014
Cause of loud booms a mystery (Ohio)

March 19, 2014
Mysterious booms worry Osceola, Polk residents

January 31, 2014
Loud, House-Shaking Booms – Even Horn/Trumpet Sounds – Persist in U. S. and Canada

December 30, 2013
Meteorologist: Loud boom that shook the Brainerd lakes area seems consistent with meteor event

August 21, 2013
Neighbors keep hearing mysterious ‘boom’ near Carytown

Mar. 18, 2013
Mysterious ‘boom’ heard across region

[virgil]

Meteors? They can cause sonic booms.