The Seattle Seahawks have installed seismic sensors inside Lumen Field to measure fan-generated ground motion during the 2026 NFL playoffs.
The Pacific Northwest Seismic Network (PNSN) set up six stations throughout the stadium to capture the seismic energy produced by the collective movement of the 12s, the Seahawks’ famously passionate fanbase.
The initiative builds on previous efforts and offers insight into the home-field advantage for Seattle ahead of their divisional round matchup with the San Francisco 49ers.
"With these six seismometers, we have Lumen Field 'wired up' and we can record exactly how the excitement of the crowd leads to shaking of the ground, much like an earthquake does," PNSN Director Harold Tobin at the University of Washington said in a statement to Seahawks.com. "We expect the massive crowd of 12s to generate measurable seismic energy. It's a fun way to show the world exactly how much, in a scientific way, and to learn something about the seismic waves in the process."
PNSN will stream results through real-time seismograms on pnsn.org during the game and share updates through its social media channels.
The project follows prior in-stadium deployments during Seahawks playoff games in 2014, 2015, and 2017, as well as the legendary Beast Quake run by Marshawn Lynch in 2011, which have all helped further PNSN's efforts to increase earthquake awareness in the Pacific Northwest.
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