Early in their Monday night NFL clash, Seahawks' defensive end Michael Bennett recovered a fumble by New Orleans Saints quarterback Drew Brees in the first quarter and ran it back for a touchdown.
The subsequent vibrations were picked up by a seismometer used by the Northwest Seismic Network, which monitors earth activity in Washington and Oregon, the Seattle Times reported.
The earthquake measured between a magnitude 1 and 2, too small to be traced by the U.S. Geological Survey, the report said.
The touchdown set the stage for a 34-7 Seahawks win.
The rivalry between the Seahawks and the Saints has caused tremors in the past.
The seismometer recorded Marshawn Lynch's "Beast Quake" on January 8, 2011, when he scored a 67-yard touchdown run that clinched a 41-36 playoff victory over the Saints, the report said.