High Quality Content by WIKIPEDIA articles! The 2010 New Year`s Eve tornado outbreak was a tornado outbreak that developed on the night of Thursday, December 30, 2010 with most of the activity on Friday morning, December 31, and a few tornadoes in the early hours of Saturday, January 1, 2011. Many tornadoes developed in a large portion of the central United States from Mississippi northward to Illinois. At least 9 people were killed as a result of the tornadoes, and it is the deadliest tornado outbreak in the US in the month of December since 2000 and one of the largest December outbreaks ever recorded.