![]() ![]() After a cold / frosty period, during which the ground became thoroughly frozen, rain fell on the 19th January, which itself froze, plus a period of snow. Highest flood level (as at 2003) on the upper River Thames recorded at Shillingford Wharf (47.25m above OD). Further fog on 7 days later in January.Ī flood occurred, which may have been tidal in the lower reaches of the Thames, carried away bridges at Eton, Deptford and Lewisham. If these reports are correct, then this 1808 hailstorm (according to Colin Clark / 'Weather' July 2004), produced the largest hail diameters for Britain known (along with that for 1697).įog daily 24th December to 2nd January (London/South). From reports at the time, the diameter of much of the hail was of the order 11 cm, with much damage being recorded - including injury & death to people in the open. The storm first hit areas in the Sherborne / Templecombe area late afternoon then moved (or developed) NNW'wards to reach Bristol mid-evening. Damaging hailstorm affected counties in SW England afternoon / evening of the 15th (presumably as the hot spell above was breaking down), primarily affecting Dorset, Somerset & Gloucestershire. and SE England, 37degC (99degF) reported in Suffolk (exposure & instrument details unknown. 13th: 'Hot Wednesday': shade temperatures 33 to 35degC in E. One report at the time (from farm records in the eastern Fens), says that the temperature in the shade near London was 96 (degF), which converts to just over 35degC: the same reference notes that this spell is the "hottest day ever known in Eng'd … the Hot Sunday in 1790 was only 83 Deg". It was undoubtedly a very hot spell though, as deaths (people & animals) from heat exhaustion were recorded, particularly from the agricultural areas in the east and north of England. ![]() Studies since that date have shown that individual day maxima were well above 25degC (possibly to 28degC) in the West of England up to (almost certainly over) 32degC in London & possibly as high as 34degC in Kingston upon Hull (ER Yorkshire): however caution is required with all these values due to the differing instruments, exposure, accuracy of recording etc. average of 24hr maximum & minimum) climbed to just over 24degC. In particular, there was a hot spell from the 12th to the 15th, with a peak around the 13th/14th, when the CET daily temperature (i.e. With a value of 18.4degC, it is in the 'top-10' of such-named months for warmth. Notably warm month (using the CET series since 1659). This was followed in the days after by a 'very intense frost'.ġ. Dislocation to movement for "several days". Serious flooding East Anglian marshes (significant breach is sea walls), with loss of farming stock and damage to ships, onshore etc.ġ2th: Significant snowstorm (heavy snow / high winds) affects East Anglia / East of England fens. Northwesterly (?) gale affects east coast of England. įog daily 17th - 21st December (London/South). Lamb (CHMW) ascribes this reversal to a renewal of volcanic activity. The decade from 1810-1819 was the coldest in England since the 1690's. There was a great deal of ice on the Thames during most of these winters, but the ice does not seem to have been strong/thick enough for people to walk from one side to the other.ġ809-1819: After a relatively benign period from 1790 (several warm summers & less cold winters), these years saw a return to often harsh winters & unsettled, cold & wet summers. 10 wet summers noted: just 3 'dry' years in this period noted: 1802, 1807 & 1840. However, as always with such sweeping statements, there were notable exceptions! The following years and / or seasons are noted as being 'dry' during these first 40 years of the 19th century: For example, from the Greenwich series (LW), the wettest years in these four decades did NOT coincide with the EWP set for London, it appears that 1821 (~140%) and 1824 (~150%) captured the most rainfall, and two years (1817 & 1819), although not 'notable' in the England/Wales-wide series, were wet in the London/SE area. There is evidence from London-area data that (as might be expected) there were notable regional variations. In particular, 1828 & 1839 (~120%) stand out, though even these don't appear in the 'top-10' of wettest years in that series. Using the EWP series, the following years had precipitation %ages of roughly=/> 110%. These first 40 years of the 19th century often contained references to excessive rainfall, floods etc. (T: warm/cold events R: dry/wet events S: 'stormy' events) Date ![]()
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