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A number of Yellow thunderstorm warnings have been issued for the UK, highlighting the potential for frequent lightning, large hail and flash flooding impacts from the intense rainfall which could see values of at least 50mm in a two or three-hour period in a few places. Dan Suri is the Met

. These showers will be heavy and thundery in places, and could be accompanied by hail, all of which could again adversely affect driving conditions. Sunday looks better for many with sunny spells and patchy cloud away from Western Scotland and Northern Ireland. Here there will be steadily increasing cloud

, resulting in more accurate temperature forecasts, more accurate predictions of rain, hail and snow, and more accurate weather symbols.   “It’s taken big scientific investment to get to this stage, so it’s an important milestone for the Met Office, and there are more exciting developments to come

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

) 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

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

, the north and west are likely to see more unsettled weather. READ MORE: Met Office Weather Deep Dive: A change is on the way Showers will be most frequent and intense across Scotland, Northern Ireland, and northern England,  areas where hail and thunder are possible. This could impact matches

, and as we move through next week often below average temperatures could support a mixture of rain, hail sleet and snow. Most of any snow accumulation is likely over higher parts of the northern UK.  “However, at this point significant differences in the computer models emerge. Most solutions lead

, 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

accompanying lightning and hail, and there could be some difficult driving conditions with a small chance of some localised surface-water flooding due to the volume of rain in a relatively short period of time.   “Some places within the warning area will miss the heaviest of the showers, but isolated