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are occurring on Tuesday.   Wednesday will see a continuation of the unsettled weather, with early rain in the west before showers develop more widely as the day goes on, with a risk of hail and thunder – most likely in central and southeastern areas. Temperatures will remain rather cool in northern areas

clouds, lightning, thunder, hail, downpours of rain and sometimes gusty winds. These storms can last for several hours if there is enough energy and moisture to sustain the process and can form a large complex of thunderstorms known as a Mesoscale Convective System (MCS). Spanish plumes most often

through condensation. Water eventually returns to earth through precipitation as rain, snow, sleet and hail. When precipitation occurs over land, some water seeps into the ground as groundwater, a small amount is taken up by plants and animals, and the rest will return to rivers and streams

, and has been plotted in 5-minute intervals below. Radar imagery Initial analysis of 5 km radar data, indicates that some points may have had over 100 mm in just 3 to 4 hours. 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: 6 November 2012 © Crown Copyright

torrential rain, hail and lightning strikes. Lightning can cause power cuts and disrupt other utilities and services. Torrential rain and hail can lead to flooding and make driving difficult – with big differences in road conditions from one place to another. Extreme Heat Whilst many of us like

forecasting capability, which captures the range of possible further weather events, allowing us to better estimate the likelihood of severe weather. It exploits our latest high-resolution models, resulting in more accurate temperature forecasts, more accurate predictions of rain, hail and snow

is characterised by frequent showers at any time of the year. In the winter months when convection is most vigorous over the sea, hail and thunder are common across much of the western and northern side of the British Isles. However, eastern Britain may see fewer showers as here the surface heating is reduced

) snowfall_accumulation-PTxxx (xxx = 15M , 01H, 03H) snowfall_rate snowfall_rate_max-PTxxx (xxx = 01H, 03H) Add hail diagnostics. Update snow diagnostics to exclude hail. This addressed the problem of there appearing to be snow when it is warm (actually hail, which was previously lumped in with snow). UKV

unsettled in northern and western areas. Any showers in the north could be wintry with hail and thunder, but even here, any snow will be mainly on high ground. The south of the country will see the best of the drier and brighter conditions. While temperatures will be near normal for the time of year

on Friday for those in the southwest, with warm air from the south increasing the chances of some thundery showers in parts of Devon and Cornwall. The risk of thundery outbreaks increases and spreads further north and east through the weekend, with the possibility of hail and gusty winds possible