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Cyclone Dirk is a large and deep European windstorm that affected Western Europe from Iberia to Iceland from 22 December 2013. ==Meteorological history== Dirk formed over North America, some storminess was associated with the low in Canada, before it moved into the Atlantic. The preceding weather in North America saw a steep temperature gradient (temperatures in New York 21°C, Montreal -7°C) which enhanced the jetstream in the North Atlantic. The low moved under this powerful jet stream where it explosively deepened before reaching Western Europe.〔 Deepening below is considered uncommon in the North Atlantic, but has been recorded on a number of occasions, measured from ships transiting the ocean and from land based-recording stations. Offshore the minimum low pressure of the "Dirk" storm was forecast to reach a low of .〔(【引用サイトリンク】url=http://nomads.ncdc.noaa.gov/ncep-charts/hires/20131224/gdas.sfc.mslp.thk.nh.anl.12.20131224.gif )〕 On land the low pressure during the storm was measured at on 24 December at Stornoway, Isle of Lewis off the north west coast of Scotland. This the lowest measured in Britain and Ireland since 1886 (127 years), when a low of was recorded in Belfast, Northern Ireland.〔 The most recent low pressure record near such values in Stornoway was measured on 20 December 1982 at .〔 The all-time low pressure record for the British Isles remains at , recorded at Ochtertyre, Crieff in Perthshire on 26 January 1884.〔 At the southernmost tip of the Faroe Islands a low air pressure of 932.2 hPa was recorded on Christmas Eve at Akraberg lighthouse. This was not as low as the Faroese record of 930.3 hPa, set at Vagar airport during the passage of the Braer Storm of January 1993.〔 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「Cyclone Dirk」の詳細全文を読む スポンサード リンク
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