The NFL announced they're switching the time for the 49ers-Eagles game to 1:15pm pacific time because of the weather. According to the league, because of the threat of a major snowstorm:
In anticipation of the storm and as a public safety concern, the change was made to accommodate fans and allow more time for city and stadium personnel to clear streets and walkways in and around the stadium.
The game will be televised on FOX as originally scheduled.
Plan accordingly.