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Everything posted by Nick F
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A look at the Jersey tornado that ploughed a path of destruction across the east of the islands on 1st November and was rated T6 by TORRO, equivalent to an EF3 tornado. Also some quotes from a resident who experienced the full force of the tornado and Storm Ciaran's strong winds that followed. View the full blog here
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Following hot on the heels of Storm Ciaran, another storm brewing over the Atlantic has been named by the Spanish Met Service Domingos. This storm will bring gusts of up to 80mph and large waves to Atlantic coasts of France and Spain. Here it will bring another 30-40mm of rain in the south. View the full blog here
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A synoptic analysis looking at how Storm Ciaran has undergone explosive cyclogenesis today and will move in across SW England in the early hours of Thursday, bringing severe gales or storm force winds to NW France and through the English Channel, perhaps hurricane force winds with exposure. View the full blog here
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Looks like southern and western coastal areas will come alive with heavy showers with hail and thunder Thursday / Friday - as cold air aloft (with origins over N Canada) spreads in from the west and low pressure moves in close to the west, later this week and creates steep lapse rates / CAPE above the relatively warm SSTs. Some may get inland across southern / SW counties of England and Wales . Staying down at the Dorset coast later this week too, so would personally enjoy seeing some flashes, rumbles and downpours.
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All this rain, yet you can bet your bottom dollar some water companies will impose hosepipe bans next summer, like SW Water did this year, despite last autumn being pretty wet too and winter around average for rainfall in that part of the world. Really need to store more of this plentiful rainfall we get.
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Some considerate driving by this lorry driver in Chesterfield, that mini just gets tossed around by the wave of flood water.
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Looks to me Aline low is separate from the low that moves up from the south over E England on some models, central England on others tonight / Friday. Tomorrow's low is a new low that forms in the left exit of a strong jet streak moving north over France. Can see on the fax for noon tomorrow the Aline low over western France and the new low over East Anglia, but both are secondary lows which circulate around the same parent low pressure system covering western Europe. Though track of new low tomorrow still varies model to model, 06z GFS seems further west.
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Rain no longer looks an issue for the SE of England tomorrow, where MO issued a yellow warning. Though still some uncertainty with the track of that low that develops over E English Channel before drifting somewhere over England. Fax chart, EC and GFS for noon tomorrow shows the differences Pennines to N York Moors looks like it could receive large rainfall totals though, as occluded fronts become slow moving across N England to north of low progged somewhere from central S England to E Anglia, depending which model one looks at.
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Storms and Convective discussion- October 2023
Nick F replied to Supacell's topic in Storms & Severe Weather
THUNDERSTORM WATCH - THURS 19 OCT 2023 Issued 2023-10-19 06:22:16 Valid: 19/10/2023 0600 - 20/10/2023 0600 Forecast Details Upper trough over the N Atlantic continues to disrupt and extend SE into western Europe with progress east impeded by blocking upper-level ridge over Norwegian Sea. An upper low forms to south of Ireland on Thursday as the trough disrupts. Warm and moist airmass surging north ahead of the upper low SW of England, following rain band moving N across Scotland, will become increasingly unstable from the south from early afternoon, as a shortwave trough and associated cold pool moving north creates large scale ascent and steepens lapse rates. As a result, heavy showers and some thunderstorms look to develop and spread north across the southern half of Britain during the afternoon and evening, lightning most likely across S Wales, SW and central S England. Given recent rainfall leading to saturated ground, additional heavy rainfall from these showers or storms may lead to some localised flooding. Forecast here: Severe Convective Weather & Storms Forecast - Netweather.tv WWW.NETWEATHER.TV