How Ear-Numbingly Noisy Can the Loudest-Ever Outdoor Stadium Get? These NFL Fans Just Found Out

Story by the Associated Press; curated by Dave Urbanski

KANSAS CITY, Mo. (AP) — Arrowhead Stadium is once again the loudest stadium in the NFL — and this time, it's official.

The Kansas City Chiefs broke the world record for an outdoor sports stadium in their 24-7 win over Oakland on Sunday when they reached 137.5 decibels in the closing minutes.

A fan screams during one of the attempts for the Guinness World Record of loudest stadium as the Kansas City Chiefs take on the Oakland Raiders in the third quarter October 13, 2013 at Arrowhead Stadium in Kansas City, Missouri. (Credit: Getty Images)

An official from Guinness World Records told The Associated Press that Chiefs fans broke the previous record of 136.6 set by Seahawks fans during a game against San Francisco earlier this year.

The Chiefs have long claimed that their facility is the loudest in the NFL.

(Credit: Getty Images)

The record-setting attempt was planned by Chiefs fans but with support of the organization, which paid $7,500 to fly an adjudicator from Guinness to Kansas City to document the effort.

Here's a peek inside the stadium, amid the screaming crowd, with the Guinness official describing what he heard and documented:

Here's a report from KMBC in Kansas City:

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