Loud boom remains a mystery for Bellingham residents on April 23, 2018

Plenty of theories were floated on social media Monday night and Tuesday morning about the cause of a large boom that was heard from Everson to Bellingham and west to Blaine around 7 p.m. Monday. According to reports, the boom shook houses, though no reports of damage were mentioned. –
Bellingham Herald

Michigan Township rattled by a mysterious explosion on April 22, 2018

Some people living in and near Bedford Township in Southeast Michigan have reported hearing a loud “boom” that they say sounded, and felt, like an explosion just before 8:30 Sunday evening. And of course, the mystery continues. – 13 ABC

Loud bang shocks residents of in Wirral and Liverpool on April 15, 2018

Dozens of people took to social media to express their shock at hearing a loud bang across Merseyside this morning. The huge boom was heard as far and wide as Bootle and Wirral, with some New Brighton residents saying their homes shook. – CONTINUE