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Black Sunday refers to a particularly severe dust storm that occurred on April 14, 1935, as part of the Dust Bowl.〔(【引用サイトリンク】url=http://www.srh.noaa.gov/oun/?n=blacksunday )〕 It was one of the worst dust storms in American history and it caused immense economic and agricultural damage.〔(【引用サイトリンク】url=http://www.pbs.org/wgbh/americanexperience/features/general-article/dustbowl-black-sunday )〕 It is estimated to have displaced 300 million tons of topsoil from the prairie area in the US.〔''Black Blizzard'', History Channel documentary.〕 On the afternoon of April 14 the residents of the Plains states were forced to take cover as a dust storm, or "black blizzard", blew through the region. The storm hit the Oklahoma Panhandle and Northwestern Oklahoma first, and moved south for the remainder of the day.〔 It hit Beaver around 4:00 p.m., Boise City around 5:15 p.m., and Amarillo, Texas, at 7:20 p.m.〔 The conditions were the most severe in the Oklahoma and Texas panhandles, but the storm's effects were felt in other surrounding areas.〔 The storm was harsh due to the high winds that hit the area that day. The combination of drought, erosion, bare soil, and winds caused the dust to fly freely and at high speeds.〔(【引用サイトリンク】url=http://www.ncdc.noaa.gov/paleo/drought/drght_history.html )〕 == The Dust Bowl == (詳細はprairies of Canada and the United States during the 1930s, 〔 and later to describe the area in the United States that was most affected by the storms, including western Kansas, eastern Colorado, northeastern New Mexico, and the Oklahoma and Texas panhandles. The "black blizzards" started in the Eastern states in 1930, affecting agriculture from Maine to Arkansas. By 1934 they had reached the Great Plains, stretching from North Dakota to Texas, and from the Mississippi River Valley to the Rocky Mountains. "The Dust Bowl" (as an area) received its name following the disastrous "Black Sunday" storm in April 1935, when reporter Robert L. Geiger referred to the region as "The Dust Bowl" in his account of the storm. 〔 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「Black Sunday (storm)」の詳細全文を読む スポンサード リンク
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