Seattle, Washington - Taylor Swift fans are known for their die-hard enthusiasm, but they may have taken it to a new level in Seattle.

Swifties have given Shake It Off a whole new meaning!

During two nights of The Eras Tour concerts at Lumen Field in Seattle on July 22 and 23, the fans' dancing and cheering caused seismic activity equivalent to a 2.3 magnitude earthquake.

Per CNN, seismologist Jackie Caplan-Auerbach, who works at Western Washington University, said the "Swift Quake" was detected on the same local seismometer as the 2011 "Beast Quake," when Seattle Seahawks fans erupted after an impressive touchdown by running back Marshawn Lynch.

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"The shaking was twice as strong as the 'Beast Quake,'" Caplan-Auerbach said.

Even the Anti-Hero singer herself felt the energy, writing, "Thank you for everything. All the cheering, screaming, jumping, dancing, singing at the top of your lungs," in an Instagram post.

"I couldn't believe how hard the ground was shaking," said CNN's Chloe Melas, who attended one of Swift's Seattle concerts. "I could literally feel it beneath my feet. My ears are still ringing."

Some fans are amused by the fact that their dancing could be strong enough to cause seismic activity, while others are simply amazed by the power of Swift's music.

One fan on Twitter said, "No artist on earth that's alive right now can do it like Taylor Swift. Truly is the Michael Jackson of our generation.

Another wrote, "The Swifties were really trynna shake it off to the top."

What can't Swifties do?

It's been quite a whirlwind few months for the 33-year-old in her record-breaking concert era, and it seems like things are just getting started!