Swift Quake: Taylor Swift's Eras concert in Seattle caused seismic activity equivalent to a magnitude 2.3 earthquake

economictimes.indiatimes.com:

Taylor Swift's recent concert in downtown Seattle caused an unexpected seismic event that left both fans and seismologists astonished. The ground shook so intensely that it registered signals equivalent to a magnitude 2.3 earthquake on nearby seismometers, making it an unprecedented "Swift Quake." The «Swift Quake» took place during the pop megastar's ongoing Eras Tour, which has been selling out venues across the nation with its 52-date schedule. Swift's captivating performances and extensive catalog of hits spanning her illustrious 10-album career have drawn immense crowds, and the Seattle concert was no exception, with a staggering 70,000 fans in attendance.

Seismologists from the Pacific Northwest Seismic Network, responsible for monitoring earthquake activity in the region, were taken aback by the concert's seismic impact. Mouse Reusch, a seismologist from the network, expressed their astonishment, stating, «It's certainly the biggest concert we've had in a while. We're talking about 70,000 people and all the music and paraphernalia associated with the concert.» The readings on the seismometer revealed a maximum ground acceleration of approximately 0.011 meters per second squared, a significant force generated by the synchronized dancing of Swift's devoted fans, affectionately known as «Swifties,» and the power of the concert's sound system. Seismologists use acceleration measurements to assess ground vibrations, which are then converted to the more commonly known Richter scale used to measure earthquakes.