1808 United Kingdom heat wave

The 1808 United Kingdom heat wave was a period of exceptionally high temperatures during July 1808. In the Central England Temperature series, dating back to 1659, at the time it was the 2nd hottest July on record, the hottest since 1783.[2] The month included some of the highest temperatures ever recorded in the UK.

1808 United Kingdom heat wave
Dates July 1808
Areas affected United Kingdom
Highest temperature 38 °C (100 °F) in London, England on 13 July.[1]

Weather

July 1808 was the second hottest July on record, at the time with an extreme notable heatwave from the 12th to 15 July, peaking on the 13th and 14th. Temperatures above 36 °C (97 °F) were recorded in many areas on the 13th and 14th, with London reaching 38 °C (100 °F)[1] on the 13th, with a possible reading of 41 °C (105 °F).[3]

  • Reports from Weather Stations around the United Kingdom
Town or City Temperature Date
Northampton 33 °C (91 °F)13 July [4]
Kingston upon Hull 34 °C (93 °F)13 July [5][6]
Suffolk 37 °C (99 °F)13 July [5][6]
London 36 °C (97 °F)12 July [5][6]

When the heatwave was coming to a close on the 15th, there were some very severe thunderstorms. These most severe of the storms affected Dorset, Somerset & Gloucestershire. However, a 59 miles (95 km) swath was also damaged between Bath and Bristol. Reports of hail stones up to 1 foot (300 mm) long were recorded in Somerset, with hailstones of a more general 70 to 100 millimetres (2.8 to 3.9 in) being reported as well. Ball Lightning was also observed in Gloucester, and was noted as destroying one of the pinnacles at the west end of Gloucester Cathedral. It is thought that this is one of the most severe hailstorms in the history of the United Kingdom, along with that of 1697.[3][5][6]

Impacts

As a result of the hot temperatures and following thunderstorms, many people lost their lives, especially in the counties of Bedfordshire, Buckinghamshire and Northampton. Animals were also badly affected as a result of the hot weather, with 50 post horses dying as a result on the Great North Road alone. Farmers also struggled. Despite being able to harvest their crops early, other products melted quickly such as butter and honeycomb.[1]

References
  1. Murden, Sarah (July 17, 2018). "The Heatwave of 1808".
  2. https://www.metoffice.gov.uk/hadobs/hadcet/cetml1659on.dat
  3. "Trevor Harley Home Page". www.trevorharley.com.
  4. "Llên Natur: Gwefan Natur i Bobl Cymru - Gartref". www.llennatur.cymru.
  5. http://homepage.ntlworld.com/booty.weather/climate/histclimat.htm
  6. "July 1808 - A very hot month". Netweather Community Forums.
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