The 2012 Leap Day tornado outbreak was a significant and deadly tornado outbreak that started on February 28 and ended on February 29, 2012. It is so called because the second day was a leap day. It caused severe damage in several regions, especially the Great Plains and Ohio Valley regions. It also resulted in several tornadoes in the Central Plains, a rarity for the time of year. The most destructive and deadly tornado was a violent early-morning EF4 that hit Harrisburg, Illinois, killing 8 people. In total, 15 people died in the outbreak. Just two days later, a larger and deadlier outbreak devastated the Ohio Valley and Southern United States.