According to residents of Manchester, loud bangs were heard outside on November 22. However, nobody noticed anything that could have been the source of the sound.
What's happening on Oxford Road in Manchester???? What were the loud bangs??— boo (@beccharrison_) 22 ноября 2017 г.
why are there loud bangs in manchester this is not fun when you’re on your own— libs x (@libbyjsmith) 22 ноября 2017 г.
Massive bangs in Manchester scare the life out of me wtf was that??? 😫— amy lucia࿊ (@amsoreo) 22 ноября 2017 г.
Just several days before that, people in Alabama also heard deafening sounds, dubbed the "Bama Boom." It was so powerful that their houses shook and windows rattled. Puzzled and terrified, people took to social networks to share their thoughts.
The National Meteorological Service of Birmingham and James Spann, a local TV meteorologist, also shared their suggestions about the nature of the sound.
Re: loud boom heard: we do not see anything indicating large fire/smoke on radar or satellite; nothing on USGS indicating an earthquake. We don't have an answer, and can only hypothesize with you. 1) sonic boom from aircraft; 2) meteorite w/ current Leonid shower?— NWS Birmingham (@NWSBirmingham) 14 ноября 2017 г.
Still no explanation for the “Bama Boom” around 1:45p CT. Reports are from Blount, Jefferson, Walker, Cullman, Talladega, Calhoun, Clay, Winston, Randolph, Tuscaloosa, St. Clair counties.— James Spann (@spann) 14 ноября 2017 г.
No explanation from USGS, NOAA, or EMA. Waiting to hear back from NASA… possible meteor
However, the head of NASA's Meteoroid Environment Office, Bill Cooke, told ABC 3340 the noise might have been caused by tests of a supersonic aircraft, but the US Air Force hasn't yet confirmed this information.
The disturbing sounds were even captured on video.
Home video during the "Bama Boom" today at 1:49 p.m. CST…. from Amy Phelps pic.twitter.com/ZQQIL6NmFz— James Spann (@spann) 15 ноября 2017 г.
Fans of the "Stranger Things" series fantasized that the sounds could have been some otherworldly dark forces trying to reach humanity.
Can we all agree that the Bama Boom yesterday was just Eleven opening the portal to the upside down? Get your nail bats ready guys, we have a demegorgon to kill. pic.twitter.com/R1jccWFOe8— Anna Blackwell (@AnnaH_Blackwell) 15 ноября 2017 г.
The origin of those mysterious "booms" still remains unclear.
@spann has nasa or anyone figured out what the bama boom was yet?— Michael Henley (@risibleusername) 19 ноября 2017 г.
That's cool, but what about the #BamaBoom? We just gonna be like "nothing to see here, move along"?— Randy Bryant (@Garbledust) 18 ноября 2017 г.
Meanwhile, similar reports have been appearing for a while from different parts of the world, including Idaho (US), Cairns (Australia), Abergavenny (Wales) and Lapland (Finland). Another mysterious sound resembling a trumpet was heard from the sky above the Iranian city of Astara in August.