(Earth) Quake in your Shoes

Quote:
A celebration by football fans in the US city of Seattle grew so loud on Monday evening it registered as a minor earthquake, a research group has said.

Raucous fans jumped up and down during an early first-quarter touchdown in the game between the Seattle Seahawks and the New Orleans Saints.

The Pacific Northwest Seismic Network detected the vibrations, measuring between a magnitude 1 and 2 earthquake.
Endquake(quote)

Apparently this seems to be a habit with Seattle fans.

Seattle Seahawks football fans 'caused minor earthquake' - BBC News