|
The Great Storm of 1987 was a violent extratropical cyclone that occurred on the night of 15–16 October, with hurricane-force winds causing casualties in England, France and the Channel Islands as a severe depression in the Bay of Biscay moved northeast. Among the most damaged areas were Greater London, the East Anglian coast, the Home Counties, the west of Brittany and the Cotentin Peninsula of Normandy which weathered gusts typically with a return period of 1 in 200 years. Forests, parks, roads and railways were strewn with fallen trees, and the British National Grid suffered heavy damage, leaving thousands without power. At least 22 people were killed in England and France, and a gust of was recorded in Gorleston, Norfolk. That day's weather reports had failed to indicate a storm of such severity, an earlier, correct forecast having been negated by later projections. The apparent suggestion by the BBC's Michael Fish of a false alarm is celebrated as a classic gaffe, though he claims he was misquoted. Major improvements were later implemented in atmospheric observation, relevant computer models, and the training of forecasters. ==Development== On the Sunday before the storm struck, the farmers' forecast had predicted bad weather on the following Thursday or Friday, 15–16 October. By midweek, however, guidance from weather prediction models was somewhat equivocal. Instead of stormy weather over a considerable part of the UK, the models suggested that severe weather would reach no farther north than the English Channel and coastal parts of southern England.〔 During the afternoon of 15 October, winds were very light over most parts of the UK. The pressure gradient was slack. A depression was drifting slowly northwards over the North Sea off eastern Scotland. A trough lay over England, Wales and Ireland. Over the Bay of Biscay, a depression was developing.〔 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「Great Storm of 1987」の詳細全文を読む スポンサード リンク
|