What town was the latest to be devastated in what has become America's deadliest tornado season?

The latest town to be devastated is Springfield, Massachusetts which was recently hit by an EF3 tornado that killed 3 and injured about 200.

However, this tornado season (2011) is not our deadliest. In 2011 the U.S. has had 553 tornado fatalities. This takes second place to the 794 tornado deaths in 1925.