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Everything posted by Ben Sainsbury
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Have a great vantage point currently on top of Chelwood hills, a nice bright purple flash as I speak!
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Various towering cells stretching right across my horizon! Incredible to see might have to take a drive towards Chelwood.
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Beginning to see the towering cells to my south. They already have such extraodinary height given how far I am away!
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Dunno about the lightning strike near Bristol, barely a cloud in the sky.
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Some small towering altocumulus castellanus here, positive to see ahead of main activity.
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Must be some rapid developments as nothing reminiscent of a thunderstorm over Southampton bar a few showers, exciting time. Everyone watch the next two radar updates, I expect the channel to explode hehe...
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Possibly in which case, much of West Country into Wiltshire, S Wales and S Midlands may see nothing. However I feel the western clag of the split MCS will track much much further west but we won't know until it happens.
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I don't know if it's just me, but the MCS looks like in the process of splitting indicated by lack of lightning in the middle of the storm track. As a result, I expect the west side to die off, and for the east side to continue spitting out sferics and to head towards the far SE.
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Patience is all that required and has now delivered on the south coast. Have high confidence that these will develop further.
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Promising signs, I've seen a few reports of this elsewhere too and can be seen on Sat24. In regards to a bust, the NMM, AROME & EURO4, all don't show anything of note till 7pm, 9pm and 9pm respectively.
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If we take a look at the cloud height on the Sat24: https://en.sat24.com/en/nl/km It is clear for the most part that the storms in the far SW are decaying. And if anything the very large active storm possible MCS over France is maintaining, if not growing in size. We should expect further activity by 7/8pm.
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Atmosphere continuing to destabilise across the channel in association with the trough moving northwards. As skies continue clear across much of Southern England I expect more showers/storms to intensity and form further eastwards to the current showers.
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Tom I suggest looking at the Sat24, which is a satellite image animation and you can use it to kind of predict when the cloud will clear. Use this link: https://en.sat24.com/HD/en/gb/visual I expect for our region the cloud will disperse by midday.
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By the looks of it indeed so, might have to make a drive northwards if these develop further, the NMM currently modelling this area well (although a little more north) only disappointment is no strikes so far!
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Especially in the last 10-15 minutes, a few cells have fired over Reading and look explosive on Sat24.
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I'd actually second this, for some reason I don't have much confidence in the risk of storms tonight, I don't see much potential though likely to be proved wrong! Then again ConvectiveWeather's forecasts have been very impressive, and brings me a lot of confidence for tonight on the flip side.
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The explosive development of the storms along the south coast, look very impressive on the Sat24.
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Can you elaborate, I'm not sure that I know what you mean?
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That time again for thunderstorm activity is upon us, let's take a look at how things are shaping up for tomorrow. General consensus is for CAPE values to reach between 400-500J/kg in some of the more favourable locations tomorrow, severe parameters look relatively limited for tomorrow so no severe potential unfortunately. Saying that there is a possibility of seeing a FC or two tomorrow given decent LLS and wind convergence zones. Convergence zones along with strong heating look to be the prime factor for initiating storms and these are evident across much of East Wales/Central Areas along with parts of Dorset into Devon. Storms moving SW throughout the day and evening. Beginning with the GFS: As always CAPE values are being well overcooked here by more than double. Storms I don't expect to be as widespread (and a little east compared to other models), though again Central Areas/CS-SW England are the most favourable locations. Next the ECMWF: CAPE values not exceeding 400J/kg, similar to various Skew-T charts I've analysed. ECMWF has a main focus on Devon, although fewer showers across Central areas. A last look at the NMM Model and EURO4: The NMM model showing the formation of several convergence zones across Central areas and the SW, although again the majority of the higher res models favoring much of the SW over Central areas. Therefore the general coverage of storms looks to be better over the SW regarding my forecast and if I had to choose a particular location tomorrow I'd have to say in and around the Yeovil area.
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Convective/Storm Discussion Thread - 1st August onwards
Ben Sainsbury replied to Supacell's topic in Storms & Severe Weather
Have anyone taken or have seen any pictures regarding today’s storm (supercell) over parts of East Anglia today, would be interesting to see the structure of that thing as it developed into a supercell? -
Convective/Storm Discussion Thread - 1st August onwards
Ben Sainsbury replied to Supacell's topic in Storms & Severe Weather
My post regarding the storm potential for the last few days is found here: Because of other commitments I hadn't had the time to update on the potential, until Saturday morning when I was freed of my A-Level work. To be clear, I haven't actually bashed any forecaster I continually go on about the uncertainty and the challenging nature of forecasting storms are what inspire me of these top forecasters regarding Dan, Nick and so on. The only point I ever made was regarding ConvectiveWeather's post after having updated the MDT area to cover where I live, after we had finished with all our storm activity. I regularly applaud those who put in the hard work and this is an example of me saying thanks towards CW. And finally, that chart which you originally quoted me in was away of condensing various forecasters and simplifying it for those struggling to understand what areas would receive what storms at whatever time. No hard feelings.