Seattle sets stadium noise record
The group, called Volume 12, announced on its Facebook page it had set the mark late in the first quarter. The decibel reading taken during a sack of San Francisco quarterback Colin Kaepernick in the first quarter - following a one hour weather delay - was 131.9 decibels.
The previous record for ''loudest crowd roar at a sports stadium,'' was 131.76 decibels, set in 2011 in Turkey at the Ali Sami Yen Sport Complex Turk Telekom Arena during a soccer match between Galatasaray SC and Fenerbahce.
The group footed the bill for the Guinness World Records official to come to Seattle and wasn't affiliated with the team.