Kansas City, MO
The Kansas City Chiefs set a new world record for crowd noise, eclipsing the four-week-old mark set by the Seattle Seahawks.
On Sunday, October 13, 2013, Kansas City defeated the Oakland Raiders 24-7, and Chiefs fans set a Guinness World Record for Loudest Crowd Roar at a Sports Stadium (Outdoors). Chiefs fans reached a peak decibel reading of 137.5 as Guinness Book of World Records adjudicator Philip Robertson monitored the sound levels.
The mark was set on a fourth-quarter play that lasted six seconds as LB Derrick Johnson sacked Oakland QB Terrelle Pryor between 0:48 and 0:42 left in the game.
The Arrowhead Stadium record passed the old record of 136.6 decibels set on September 15, 2013 at CenturyLink Field in Seattle.
"In the fourth quarter, as the Chiefs fans were celebrating their victory, all of the sudden it peaked at 137.5 decibels," Guinness World Record adjudicator Philip Robertson said.
"They screamed for an incredibly long time, probably longer than what I heard in Seattle," Robertson added.
The Chiefs' fans also broke the stadium's long-standing noise level record of 116 decibels.
"Congratulations to our incredible fans at Arrowhead today, who set a new Guinness World Record," Chiefs chairman and CEO Clark Hunt. "Not only were they loud, but they knew when to be loud and helped propel their Chiefs to victory.
"They proved what we've known for a long time - Chiefs fans are the best and loudest in the NFL," Hunt added.
Aside from the loudest crowd roar, the Chiefs also set a world record for the largest flyover formation with 49 planes flying over Arrowhead Stadium with pink smoke trailing behind in honor of Breast Cancer Awareness Month.