And it wasn't the first time 12's shook the stadium...
When former Seahawks running back Marshawn Lynch scored on a 67-yard touchdown run in a 2011 playoff game against the New Orleans Saints, the celebration from 12's in the stands also registered on local seismographs.
Lynch's run became known among Seahawks fans as the 'Beast Quake'.
The Seahawks went on to win that game too, beating the Saints 41-36.
The (5-2) Seahawks next face the Washington Redskins on Sunday at CenturyLink Field.
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