The deadliest tornado outbreak in over 70 years, deadliest single tornado in over 60 years, record flooding in the Missouri and Mississippi Valleys, devastating heat and drought in the South, the "Groundhog Day Blizzard," Hurricane Irene, "Snowtober"... the list goes on and on. The number of extreme weather events in 2011 may have been without precedent, as the National Climate Data Center for the first time ever tallied 14 billion-dollar weather-related disasters in a single year.
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机译：七十多年来最致命的龙卷风爆发，六十多年来最致命的龙卷风爆发，密苏里州和密西西比河谷创纪录的洪水，南部地区毁灭性的高温和干旱，“ Groundhog Day Blizzard”，“ Irene”飓风，“ Snowtober” ...这个清单不胜枚举。 2011年的极端天气事件数量可能是史无前例的，因为国家气候数据中心首次在一年内就解决了140亿美元的与天气有关的灾害。
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