Dempsey set the record in 1970 with the New Orleans Saints, and the mark was subsequently tied by Denver's Jason Elam (1998), Oakland's Sebastian Janikowski (2011), and San Francisco's David Akers (2012).
It's no secret that the altitude in the Mile High City helps kickers. Elam and Janikowski were kicking in Denver when they made 63-yarders. However, cold weather is not ideal for kicking distance because cold air is denser than warm air. The temperature was 14 degrees when Prater made his kick.
Michael Husted, a former NFL kicker who is now a kicking coach and consultant, said the benefit of high altitude would outweigh the detriment of low temperature.
"The altitude will still win out," Husted said. "Definitely, cold weather will decrease the distance on the ball. But when all is said and done, the altitude still gives you five or six yards, easily. I know whenever I kicked there, it was a noticeable difference.
"I always figured that if somebody was going to break it, it was going to happen in Denver."
Husted said he would not be surprised to see successful field goals of 65 and possibly 66 yards within the next few years.
"Kickers are getting better," he said. "I also wouldn't be surprised if the NFL narrows the uprights sometime soon."
The forecast in Philadelphia on Sunday?
Shady, all day.
LeSean "Shady" McCoy trampled Detroit in a driving snowstorm, running for a club-record 217 yards, with touchdowns of 57 and 40 yards. This against a Lions defense that hadn't given up a rushing touchdown in the previous eight games and had allowed an NFL-low 82.7 yards rushing per game.
Unable to throw the ball effectively in the blizzard conditions, the Eagles kept it on the ground and gained 299 yards, mostly through the middle of the defense.
"The first half we stopped the inside run and forced them to go sideways," Lions Coach Jim Schwartz said after Philadelphia's 34-20 victory. "In the second half, we allowed them to run inside and that was the difference."
Detroit ran for 80 yards but might have been able to do more with Reggie Bush. He slipped during warmups and re-injured his calf.
There's been all sorts of pressure lately for the Redskins to change their name.
Here's one: Washington Redseats.
That was the scene at a bitter-cold, near-empty Fedex Field on Sunday, as thousands of Redskins fans left the stadium early in the second half instead of staying to watch their team get blown out by Kansas City, 45-10. The cavernous stadium was almost a solid red of empty seats.
The day started with an ESPN report that Washington Coach Mike Shanahan had cleared out his office before a wild-card game against Seattle in January, intending to quit — presumably, before he could be fired — because of his strained relationship with Redskins owner Dan Snyder.
Shanahan had a chance to refute that report after Sunday's loss, but instead came closer to confirming it, telling reporters: "It's not the right time or place to talk about my relationship with Dan Snyder. Or it's not the right time or place to talk about something that happened a year ago."