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The March 2006 tornado outbreak sequence was an early season and long lasting tornado outbreak sequence in the central United States that started on the morning of March 9 and continued for over four days until the evening of March 13. The outbreak produced 99 confirmed tornadoes. The tornadoes killed a total of 11 people. The total damage by the severe weather was in excess of $1 billion.〔 ==Meteorological synopsis== The period of active weather started with a major derecho event on March 9 across the South Central United States, that also included several tornadoes, although straight-line winds did most of the damage. Numerous injuries and at least two fatalities were reported, but mostly due to the thunderstorm winds. The two fatalities were as a result of a weather-related automobile accident and a fire started by lightning.〔(Two Killed in Violent Southern Storms )〕 Tens of thousands of people also lost electricity throughout the region.〔(SignOnSanDiego.com > News > Nation - One dead in lightning fire, school damaged as storms sweep South )〕 Activity calmed down on March 10 with little severe weather reported, but picked up again the next day. On the evening of March 11, 18 tornadoes developed across the region. One of them flattened a mobile home park and left many people injured and at least 2 dead in Perry County, Missouri. Several other tornadoes left heavy damage in Missouri, Illinois and Arkansas. The tornadoes were accompanied by very large hail, some as large as softballs. More severe weather developed in the morning of March 12. The Kansas City Metropolitan Area was hardest hit, with significant wind and hail damage to many homes and businesses, but only two tornadoes in the far northwestern part of the area.〔http://www.kansascity.com/mld/kansascity/14082566.htm〕 Significant damage was also reported at the University of Kansas in Lawrence and at the Great Wolf Lodge Indoor Water Park. Numerous airplanes also flipped over at the Kansas City Downtown Airport.〔http://www.kctv.com/Global/story.asp?S=4620142〕 March 12 would be the most prolific day of the outbreak, and one of the most active days in recent history, with at least 62 confirmed tornado touchdowns. In addition, microburst winds exceeding 90 mph (145 km/h) and hail as large as softballs have been reported. Several major tornadoes were reported in Missouri (along Interstate 70 near Columbia MO; there was also an F4 tornado to the north/northeast of Columbia and just to the north of the St. Louis Viewing Area). Significant destruction from separate tornadoes was dealt to Pike County Missouri (north of St. Louis) as well as central Illinois. One exceptionally long-lived supercell thunderstorm was responsible for many of the tornadoes on March 12. This storm began in the morning over northern Oklahoma before embarking on a nearly 800 mile (1290 km) journey northeast across southeastern Kansas, Missouri during the afternoon and early evening, into Illinois during the mid-to-late evening, through Indiana by the late evening, and into lower Michigan where it lost severe characteristics more than 17.5 hours after inception. This is one of the longest documented path and duration of a supercell on record. The city of Springfield, Illinois saw two strong tornadoes track directly through the city from this storm. It also did damage near Sedalia, Columbia, and Mexico, Missouri. The strongest tornado, spawned by a different supercell, was a rare double tornado rated F4, but fortunately it remained over mainly rural countryside. Fifteen more tornadoes - all of them weak - were reported on March 13 in Alabama and Mississippi before the system finally weakened and the severe weather came to an end. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「March 2006 tornado outbreak sequence」の詳細全文を読む スポンサード リンク
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