Taylor Swift’s Seattle concert created a 2.3-magnitude quake

A seismologist at Western Washington University observed that singer Taylor Swift’s Eras Tour concert at Lumen Field, Seattle, last week created actual seismic activity. Swifties quickly took to social media calling it the ‘Swift quake.’

Jackie Caplan-Auerbach analyzed 10 hours of seismic data, from when the tour venue doors opened until people left home and found that the ground was shaking with “raw amplitude” for a long time.

She even compared 2.3 magnitude vibration to the 2011 “Beast quake,” which was set off by football fans when Seattle Seahawks’ Marshawn Lynch—nicknamed “Beast Mode”—scored a touchdown.

Around 72,000 people attended Swift’s Seattle show. None were harmed due to the quake they created (maybe some eardrums). Caplan-Auerbach did throw a caveat that the ground shaking could be from the sound system too.

Other seismologists say it is “quite common” for large crowds partying to create such vibrations. Beyonce’s World Renaissance Tour will head to the same Lumen Field stadium in September. It remains to be seen if it’ll create a “Bey quake.”