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The winter of 2010–2011 was a weather event that brought heavy snowfalls, record low temperatures, travel chaos and school disruption to the islands of Britain and Ireland. It included the UK's coldest December since Met Office records began in 1910, with a mean temperature of -1 °C, breaking the previous record of 0.1 °C in December 1981. The winter of 2010 in England saw the earliest widespread winter snowfall since 1993 with snow falling as early as 24 November across Northumberland and North Yorkshire. A maximum snow depth of was recorded on 1 December in the Peak District, Sheffield, the Cotswold Hills and the Forest of Dean. In this event Scotland and Northern England were most severely affected. On 9 December temperatures recovered across much of the UK, causing a partial thaw. Later, on Thursday 16 December a cold front reintroduced a cold, arctic airstream. This cold spell brought further snow and ice chaos back to the British Isles with Southern England, Wales, the Republic of Ireland (excluding the westerly coastal regions) and Northern Ireland bearing the brunt of the wintry conditions. This led to severe disruption to the road and rail network with several airports being closed including London Heathrow Airport for a time. Several local temperature records were broken including a new record low for Northern Ireland of -18.7 °C recorded at Castlederg on 23 December 2010. By the New Year a thaw had begun, and there was no recurrence of the extreme conditions for the remainder of the winter. There was some snowfall in early January, and there was an anticyclonic spell at the end of the month that brought some cold, frosty days. February was above average in temperature and ended on a mild note, although the snow returned in much of Scotland during March. ==Background== During the latter part of November, northern blocking established over Greenland which resulted in the Jet Stream moving south, allowing cold air to flow in from the east. Forecasters warned of the potential for severe winter weather from weeks in advance and the Government stated that they were prepared for winter weather after the previous British winter of 2009–2010 caused havoc and widespread disruption. The cold weather arrived in the British Isles on 22 November and by 24 November, snow showers brought by a stiff northerly wind fell over the North East of England and Northern and Eastern Scotland which resulted in 10–20 cm locally and gridlock in many of the major roads within Aberdeen during the evening rush hour of 24 November. In the following days, the snowfall became far more widespread leading to widespread travel disruption, school closures and cancellation of sporting fixtures. The Met Office confirmed that it was the most widespread snowfall in the United Kingdom for 17 years. By 2 December, most of the United Kingdom and much of the Republic of Ireland was covered with snow, accumulations in the north and east of Scotland and England were over 50 cm in places, with over 1m of snow lying on much of the Scottish mountains. Snow depths elsewhere were between 5 cm–30 cm widely. Temperatures fell widely below −10 °C with some areas staying sub-zero by day. On 2 December there was particularly low temperatures in major towns and cities, particularly in Scotland where it dropped to −18 °C in Aberdeen and on 3 December temperatures in England broke records. However the lowest temperature of the winter of −21.2 °C was recorded at Altnaharra, Sutherland at 10 am on 2 December and Braemar and Kinbrace both dropped to −20 °C on the night of 2 December. As of 4 December, 7 people have been confirmed to have died due to the cold weather. 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「Winter of 2010–11 in Great Britain and Ireland」の詳細全文を読む スポンサード リンク
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