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convector

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    Storms and Convective Discussion - 25th June 2019 onwards

    in Storms & Severe Weather

    Posted

    18 minutes ago, Flash bang flash bang etc said:

    That storm appears to be somewhat unforecast - Estofex don’t even have a level 1 for that part of the bay.

    Just got me curious if parameters could support that building over land...

    It wouldn't surprise me. They had a level 2 out for the south east last night and nothing much happened. Then again, upper level winds are veering east so those storms will probably head right through france and not even hit the channel. 

    Saturday looks interesting though - could be some decent cape around with a cold front passing through in the evening (if the timing is right by then). Forecast profiles look capped but with enough forcing, it might not be an issue. 

    nmmuktempnew.png

    Storms and Convective Discussion - 20th April 2019 onwards

    in Storms & Severe Weather

    Posted

    2 minutes ago, staplehurst said:

    Indeed we do, balloons are sent up from Lerwick, Nottingham, Albemarle, Camborne, Herstmonceux, Valentia and Castor Bay. However due to cost-cutting, these are not as routine as they used to be (twice a day, at 00z and 12z) and often several are missing from each set.

    I believe our UK radar network is now all doppler, having been upgraded over the past few years - but sadly anything other than composite reflectivity is not available outside of the Met Office (not even for commercial purchasing).

    Ah that's a shame, it would be so interesting to get confirmations on supercells in this country. I use RASP UK for forecast soundings - the weather stations you've mentioned are available there but i don't trust the latest data are real. It's still very useful though.

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    Storm & Convective Discussion - 7th August Onwards

    in Storms & Severe Weather

    Posted

    Some decent storms around today, not much in the way of lightning activity but plenty of hail and things to look at. These setups have surprised me before so i figured i'd try chasing them this time. 

    I set out around 3:30 and headed north on the A34. The cells near bicester looked promising and the lack of shear made it really easy to get up close to them - they were pretty much just building on the spot.

    56537453_442192326522492_7308896261652873216_n.thumb.png.43bead6488a244b482a994cf0f52dc6c.png

    This thing put out a tonne of hail and and couple lightning strikes before dying out. At 4:45 the focus shifted north and i decided to drive west on the A41 to get ahead of the rain. By this time new cells were developing over milton keynes and going strong. i blasted north into buckingham and got this picture before my phone gave up on me. 

    56589739_2295751007373160_5961306609895342080_n1.thumb.jpg.57ab3ec7f87caed7fefa57f6f2153e8d.jpg

    The one on the right was decaying but the updraft on the left kept going and left a huge hail swath on the route i was taking. It also put out a lightning strike, which i heard through the car. Not bad for this time of year.

    I continued chasing, going north west through MK and then up into northampton by about 6pm; by this time the sun was setting and i was running out of fuel so i called it a day. Went pretty well, i'll definitely need to buy a dashcam for next time.

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