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The city can sometimes experience extremes. Snowfall is an infrequent occurrence in winter, falling on an average of 16 days per year, though infrequently heavy. [13] Thunderstorms are a similarly occurring feature, occurring on average up to 16 days per year. [14] London rarely experiences tornadoes, although an F2 struck Kensal Green on 7 ...
The uplands of Wales have most rain, normally more than 50 days of rain during the winter months (December to February), falling to around 35 rainy days during the summer months (June to August). Annual rainfall in Snowdonia averages between 3,000 millimetres (120 in) (Blaenau Ffestiniog) and 5,000 millimetres (200 in) (Snowdon's summit). [29]
The 2023–2024 European windstorm season was the ninth season of the European windstorm naming in Europe. It comprised a year, from 1 September 2023 to 31 August 2024. This was the fifth season where the Netherlands participated (through KNMI), alongside the United Kingdom's Met Office and Ireland's Met Éireann in the western group.
Hampstead, Greater London 14 August 1975 Highest 180-min total 178 mm (7.0 in) Horncastle, Lincolnshire: 7 October 1960 Highest 24-hour total 279 mm (11.0 in) Martinstown, Dorset: 18 July 1955 Highest total in any 24-hour period (1800-1800) 341.4 mm (13.44 in) Honister Pass, Cumbria: 5 December 2015 Highest 24-hour total (UK national average)
At first, the new weather service was bolstered by Met Office employees seconded from London, but by 1941 they were able to depend on their own resources. During ' the Emergency ' (as the Second World War was referred to in the neutral part of Ireland ), the Irish Meteorological Service supplied the Allies with weather information despite the ...
The total number of vehicles entering Central London each day also dropped from over 102,000 in February 2017 to 89,000 in April 2019. [ 37 ] In Outer London, the percentage of compliant vehicles rose from 85% in May 2022 when the consultation for expansion was announced, to 90.9% in June 2023 and further jumped to 95.2% in September 2023 ...
The Great Smog of London, or Great Smog of 1952, was a severe air pollution event that affected London, England, in December 1952.A period of unusually cold weather, combined with an anticyclone and windless conditions, collected airborne pollutants—mostly arising from the use of coal—to form a thick layer of smog over the city.
Uniquely in London, Chelsea Bridge is a self-anchored suspension bridge, the first of the type to be built in Britain. [29] The horizontal stresses are absorbed by stiffening girders in the deck itself and the suspension cables are not anchored to the ground, relieving stress on the abutments which are built on soft and unstable London clay. [28]