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| High pressure caused warm air from Southern Europe to rise up towards the UK | ||
|---|---|---|
| Dates | 25 September – 3 October | |
| Areas affected | United Kingdom and Ireland | |
| Highest temperature | 29.9 °C in Gravesend, England [1] | |
The autumn 2011 United Kingdom heat wave was a period of unseasonably warm weather which arrived towards the end of September 2011 and continued into October. As a result, record-high temperatures for the country were broken for the autumn months. The autumn heat wave followed the warmest temperatures to occur on record in the spring, but also the coolest temperatures to occur in the summer months since 1993. [2]
Temperatures in most parts of the United Kingdom began to rise on 25 September, reaching 23 °C in some areas. [2] The warm weather stayed consistent over the next few days and reached 27 °C at Saint Helier in Jersey on 28 September. [3] Temperatures continued to rise and the temperatures recorded on 29 September exceeded those peaked in Costa del Sol, Turkey and Mexico that day at 29 °C in Lincolnshire. [4] This also broke the UK's record high for that day of the year, with 27 °C having been recorded in York on 29 September 1985. [5]
Saint Helier is one of the twelve parishes of Jersey, the largest of the Channel Islands in the English Channel. St Helier has a population of about 33,500, roughly 34.2% of the total population of Jersey, and is the capital of the Island. The urban area of the parish of St Helier makes up most of the largest town in Jersey, although some of the town area is situated in adjacent St Saviour, with suburbs sprawling into St Lawrence and St Clement. The greater part of St Helier is rural.
Jersey, officially the Bailiwick of Jersey, is a Crown dependency located near the coast of Normandy, France. Jersey was part of the Duchy of Normandy, whose dukes went on to become kings of England from 1066. After Normandy was lost by the kings of England in the 13th century, and the ducal title surrendered to France, Jersey and the other Channel Islands remained attached to the English crown.
The Costa del Sol is a region in the south of Spain, in the autonomous community of Andalusia, comprising the coastal towns and communities along the coastline of the Province of Málaga.
The month of October began with a southerly airstream resulting in some exceptionally high temperatures, reaching 25–28 °C throughout England and Wales. [6] The first of October brought the highest temperatures of the heat wave with 29.9 °C recorded in Gravesend, Kent, the highest ever recorded in the United Kingdom for October, beating the previous October record of 29.4 °C which was set in 1985 in March in Cambridgeshire. [1] The new record also made the first day of October the third-warmest of 2011, although in several places (such as Sennybridge in Powys), 1 October was the hottest day of the year. [7] The annual high temperature was broken in certain places in the west and north. Throughout the month, mild westerly and southerly airstreams brought rain to north-western UK, and further relatively warm and dry days in the south. [6] The Central England Temperature for October was 13.02 °C, almost 2 °C above the 1971–2000 average, and was the warmest October since 2006 and the eighth-warmest in 100 years. There was a marked contrast in rainfall, with amounts ranging from well below average over East Anglia and south-east England to well above in Northern Ireland and western Scotland. Subsequently, sunshine amounts also varied accordingly, from well below normal over Northern Ireland and western Scotland to well above in East Anglia. [6] However, a cold front from the remnants of Hurricane Ophelia brought much cooler air across the whole of the country. [8] [9]
Wales is a country that is part of the United Kingdom and the island of Great Britain. It is bordered by England to the east, the Irish Sea to the north and west, and the Bristol Channel to the south. It had a population in 2011 of 3,063,456 and has a total area of 20,779 km2 (8,023 sq mi). Wales has over 1,680 miles (2,700 km) of coastline and is largely mountainous, with its higher peaks in the north and central areas, including Snowdon, its highest summit. The country lies within the north temperate zone and has a changeable, maritime climate.
Cambridgeshire is a county in the East of England, bordering Lincolnshire to the north, Norfolk to the north-east, Suffolk to the east, Essex and Hertfordshire to the south, and Bedfordshire and Northamptonshire to the west. The city of Cambridge is the county town. Modern Cambridgeshire was formed in 1974 as an amalgamation of the counties of Cambridgeshire and Isle of Ely and Huntingdon and Peterborough, the former covering the historic county of Cambridgeshire and the latter covering the historic county of Huntingdonshire and the Soke of Peterborough, historically part of Northamptonshire. It contains most of the region known as Silicon Fen.
East Anglia is a geographical area in the East of England. The area included has varied but the legally defined NUTS 2 statistical unit comprises the counties of Norfolk, Suffolk and Cambridgeshire, including the City of Peterborough unitary authority area. The name derives from the Anglo-Saxon kingdom of the East Angles, a tribe whose name originated in Anglia, northern Germany.
The unseasonably warm weather in the United Kingdom saw visitor numbers in Chester Zoo rise by 149% on 28 September. [10] The heat wave also saw an increase of camping and caravan parks and hotel bookings in parts of the country, including Wales. [11] [12] Businesses in Winchester have also been said to have been favoured during the period, as a 67% tourism increase was recorded on 30 September from the same day in 2010. [13] A negative effect for many UK businesses was a sales drop, and some clothing retailers suffered their largest for two years, as autumn and winter clothing sales decreased. [14]
Chester Zoo is a zoo at Upton by Chester, in Cheshire, England. Chester Zoo was opened in 1931 by George Mottershead and his family. It is one of the UK's largest zoos at 125 acres (51 ha). The zoo has a total land holding of approximately 400 acres (160 ha).
Winchester is a city and the county town of Hampshire, England. The city lies at the heart of the wider City of Winchester, a local government district, and is located at the western end of the South Downs National Park, along the course of the River Itchen. It is situated 60 miles (97 km) south-west of London and 13.6 miles (21.9 km) from Southampton, its closest city. At the time of the 2011 Census, Winchester had a population of 45,184. The wider City of Winchester district which includes towns such as Alresford and Bishop's Waltham has a population of 116,800.
The BBC claimed that the unseasonable heat wave caused for low Strictly Come Dancing viewing figures on 30 September, with an alleged loss of one million viewers on the Friday in question. A similar pattern followed the following evening with X Factor on ITV. [15]
The British Broadcasting Corporation (BBC) is a British public service broadcaster. Its headquarters are at Broadcasting House in Westminster, London, and it is the world's oldest national broadcasting organisation and the largest broadcaster in the world by number of employees. It employs over 20,950 staff in total, 16,672 of whom are in public sector broadcasting. The total number of staff is 35,402 when part-time, flexible, and fixed-contract staff are included.
Strictly Come Dancing is a British television dance contest in which celebrities partner with professional dancers to compete in mainly ballroom and Latin dance. Each couple is scored out of 10 by a panel of judges. The format has been exported to over 40 other countries, licensed by BBC Worldwide, and has also inspired a modern dance-themed spin-off Strictly Dance Fever. The Guinness Book of Records has named Strictly to be the world’s most successful reality TV format. The show is currently presented by Tess Daly and Claudia Winkleman.

The X Factor is a British reality television music competition to find new singing talent. The contestants are aspiring singers drawn from public auditions. Created by Simon Cowell, the show began in 2004 and has since aired annually from August/September until December. The show is produced by Fremantle's Thames and Cowell's production company Syco Entertainment. It is broadcast on the ITV network in the UK and simulcast on Virgin Media One in Ireland. "X Factor" refers to the undefinable "something" that makes for star quality. The series consists of auditions, bootcamp, judges' houses, several weeks of live shows, semi-finals and the final. The series had a spin-off behind-the-scenes show called The Xtra Factor, which aired directly after the main show on ITV2. This lasted for the first thirteen series, when it was cancelled by ITV in January 2017. It is replaced by an online spin-off show Xtra Bites exclusively on the ITV Hub. The first three series were presented by Kate Thornton, then from series four to eleven, the show was presented by Dermot O'Leary. Series 12 was presented by Caroline Flack and Olly Murs with O'Leary returning for series 13 onwards.
Water companies predicted that, owing to the somewhat dry weather throughout 2011, a drought might occur during 2012 if substantial rainfall did not occur over the winter months of 2011–2012. [16]