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From April 13–16, 2012, a major tornado outbreak occurred across a large portion of the Central United States into the Great Lakes region. The storms resulted in 6 tornado-related fatalities, four of which occurred in a mobile home park in Woodward, Oklahoma and two others southeast of Woodward near Tangier, where an EF3 tornado on the Enhanced Fujita Scale caused significant damage and leveled at least 10 homes. ==Meteorological synopsis== An impressive low pressure area began tracking into the Central Plains on April 13, and a high-end slight risk of severe weather was issued with isolated strong tornadoes possible. Central Oklahoma was hardest hit with large hail, although one tornado was reported. It caused minor damage in Norman, Oklahoma, where there were unofficial reports of injuries. For only the second time in history (previously for April 7, 2006), a day two high risk 〔(Storm Prediction Center April 13, 2012 0600 UTC Day 2 Convective Outlook )〕 of severe weather was issued by the Storm Prediction Center. In the discussion, the SPC stated that a major tornado outbreak was likely across central Kansas and north-central Oklahoma during the afternoon and overnight hours of April 14. It was later expanded to include a second high risk area across much of Nebraska, where a rare 45% tornado probability was given during the late morning update on April 13. During the morning hours on the 14th, the high risk area was expanded again to combine the two separate areas into a single large one. Later in the day, the 45% tornado probability was shifted from Nebraska south to Kansas and northern Oklahoma. Several PDS Tornado Warnings were issued in Kansas, being some of the first ever PDS warnings. Many tornadoes were reported, but most of them were in rural areas with little damage despite being considered "large and extremely dangerous". An EF2 tornado struck and damaged the Greater Regional Medical Center in Creston, Iowa. The hospital was triaging and moving patients. A temporary hospital was set up at Southwest Community College. At least four tornadoes were reported near Dodge City, in southwestern Kansas. Two were reported in Rush County. Late in the evening, a potentially violent tornado tracked across a long swath of south-central Kansas and into Wichita around 10:15 pm CDT (0315 UTC). Staff at the Wichita National Weather Service Weather Forecast Office at Wichita Mid-Continent Airport were forced to hand over responsibility for their County Warning Area to the National Weather Service offices in Topeka and take shelter at about 10:00 pm CDT (0300 UTC), returning to duty half an hour later. Around 10:00 p.m. CDT (0300 UTC), a broken squall line began to form across the eastern portions of the Texas and Oklahoma panhandles; a thunderstorm developed ahead of the northern line segment in northwestern Wheeler County, Texas at approximately 10:30 p.m. CDT (0330 UTC), and began developing supercell characteristics as it tracked northeastward into the Oklahoma counties of Ellis and Roger Mills. A tornado warning was issued for Ellis, Harper and Woodward counties at 12:00 am CDT (0500 UTC) on April 15 after weather spotters reported a tornado spawned by this supercell located southeast of Gage in Ellis County.〔(National Weather Service Raw Text Product )〕 This tornado later struck Woodward, Oklahoma at 12:20 am CDT (0520 UTC), killing six people.〔http://newsok.com/injuries-reported-after-tornado-hits-woodward/article/3666724〕 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「April 13–16, 2012 tornado outbreak」の詳細全文を読む スポンサード リンク
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