We know that Seahawks fans are loud.
Back in January 2011, the 'Beastquake' happened after a Marshawn Lynch 67-yard touchdown run that propelled the 7-9 Seahawks to an upset win over the Saints in the playoffs. Actual seismic activity was registered during Lynch's run.
The '12th man' also set the Guinness World Record for noise in a stadium (A record that's since been broken by Chiefs' fans).
Back in December 2013, Seahawks fans registered 137.6 decibels of sound, which is basically the equivalent of a military jet taking off from an aircraft carrier.
If you've never been on an aircraft carrier, here's another example of how loud Seahawks' fans can get: You can hear them cheer from two miles away after a touchdown.
Chris Fabregas and his wife were filming a video about two miles away from CenturyLink Field on Dec. 28, when Lynch scored a touchdown against the Rams. And as you can see below, they could hear everything loud and clear.
