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October 2000. The previous highest 12-hourly value (09-21 GMT or 21-09 GMT) was 62.9 mm on 10 June 1993. The average October 1961-1990 rainfall. Radar imagery 3-hourly radar imagery from 13/14 October 2002 Please note: The empirical relationship between radar reflectivity and rainfall rate is fixed whereas in reality this is highly dependent on precipitation type and is very different for rain and hail. Last updated: 11 February 2013 © Crown Copyright

area of low pressure but it is going to bring some more unsettled weather. “We’re going to see a swathe of heavy, showery rain pushing its way across many parts, with most areas likely to see some fairly heavy bursts at times.” Blustery winds, hail and even thunder could accompany this on Saturday

the afternoon and evening, outbreaks of heavy and thundery rain are expected to move north and northeast, particularly affecting parts of England and Wales. There is a risk of severe thunderstorms in eastern and southeastern England, bringing heavy downpours, frequent lightning, hail, and gusty winds

with a much as 30 mm of rainfall in an hour and 60 mm in 3 hours. Large hail and strong, gusty winds are also likely and we have issued a Met Office weather warning highlighting the areas most at risk”  A Level 3 heat-health watch alert has been issued for a large part of England, in association

; assess their development and the potential for hail. 3D parameter • A Horizontal reflectivity (3D) – 24 levels of radar data will be produced Figure 1: Coverage of radar products EU-IRMA product EU-OPERA product Figure 2: 24 levels of radar data Benefits Greater situational awareness through enhanced

: 3D Radar Formats: HDF5 or GRIB2 Resolutions: Higher resolution for UK-Ireland FAB and FABEC; lower resolution for wider European domain Parameters: Depth and intensity of convective storms, development assessment, hail potential Input radar data is provided via OPERA (EUMETNET Radar Programme

. Three days of sunshine and showers followed on the 10th, 11th and 12th, with the showers mostly falling as rain, hail and sleet on low ground but with snow on high ground, and Spadeadam (Cumbria) only reached 0.8 °C on the 11th. The showers also produced isolated thunderstorms, and it remained very

and dry on the 1st, but frontal cloud spread from the north-west into northern areas, bringing rain which then spread south-eastwards overnight 1st/2nd, clearing eastwards on the 2nd followed by a cold north-westerly with sunshine and showers, the showers wintry on high ground and widely producing hail

in on the 26th, with light rain clearing the south-east followed by scattered showers which were locally thundery with hail and became wintry on high ground. The 27th was notably cool for late October with showers in the north-east spreading south and west. There was snow on high ground, with 3 cm

of the country. Some showers were heavy with hail and thunder in northern areas on the 25th, but there were still many areas that saw dry weather. Scattered showers persisted for the next few days, in an unsettled end to May. Overall, the mean temperature for the UK was provisionally 1.3°C above the long-term