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2012 Leap Day tornado outbreak
The 2012 Leap Day tornado outbreak was a tornado outbreak on February 28 and February 29, 2012. It caused severe damage in several regions especially in the Ohio Valley region. It also resulted in several tornadoes in the Central Plains, a rarity for the time of year. The most destructive tornado hit Harrisburg, Illinois, killing 8 people in one neighborhood. In total, 15 people died in the outbreak.
==Meteorological synopsis==
A severe weather system that started in Central Nebraska and Central Kansas brought straight-line winds, golfball-size hail, torrential rain, and significant tornadoes to Kansas's midsection. There was a small confirmed tornado touchdown near North Platte, Nebraska - the first tornado officially recorded in that state in the month of February since record keeping began in 1950. Late on February 28, a strong EF2 tornado struck the small town of Harveyville, Kansas near Topeka, killing one person and injuring 11 others.〔(【引用サイトリンク】url=http://www.kmbc.com/r/30579011/detail.html )〕 The town's only church was completely destroyed, several homes received moderate to severe damage, and every building in the small community received a form of damage. Other tornado touchdowns were reported near Hutchinson, Kansas earlier in the day. As the storms moved into Missouri and Arkansas overnight, the threat grew stronger. At 3:00 am CST on February 29, Branson, Missouri was reporting severe damage to the town from an EF2 tornado, with homes destroyed and several houses sustaining severe damage as the storms rocketed along the Missouri/Arkansas border at more than 60 mph (95 km/h). Numerous people were injured there. Three other deaths occurred in southern Missouri due to strong tornadoes, one of which was an EF3.
The storms continued to grow stronger as they progressed eastward, and they impacted Illinois, Indiana, Kentucky, and Ohio on February 29. A moderate risk of severe weather was issued, with strong tornadoes mentioned as possible. An EF4 tornado slammed into Harrisburg, Illinois early that morning. The southern part of the city was heavily damaged with houses and businesses destroyed, many of which were completely leveled. Eight people were killed by that tornado.〔 The storm went on to produce two EF1s in the Evansville, Indiana area. Other severe damage, due to two tornadoes, was reported in Middle Tennessee east of Nashville that afternoon, where three people were killed. This was only the second significant tornado outbreak to occur on February 29 since records have been kept in 1950, the other outbreak on Leap Day was back in 1952. The Harrisburg, Illinois tornado is only the second F/EF4 tornado to strike on Leap Day ever, the other was in 1952 when a F4 went through Fayetteville, Tennessee.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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