Supercell thunderstorms are a rarity in the UK and so when three come along at once, it's an almost once-in-a-lifetime opportunity.
On 28th June 2012, a Spanish Plume combined with a sharpening trough to create a combination of high wind shear and large amounts of instability (over 2000J/kg CAPE) - such a combination is very rare in the UK. The supercells formed in the UK Midlands and travelled into north-east England, during which time there was copious flooding, golfball to baseball sized hail and a couple of impressive tornadoes.
Our chase was a little disappointing in that we managed to miss most of these extreme weather aspects but we did get to glimpse classic supercell thunderstorm structure with wall clouds, RFD signatures and impressively rotating mesocyclones. Tagging along on the chase was a first time chaser, excitable Welsh girl who you'll hear plenty of in the video. Apologies for some of the language used in the video as well..... the heat of the chase is our explanation.
Music is used in timelapse sections (much to some people's distaste but it's better than silence). Tracks are Chase&Status - "Flashing Lights", and "Daft Punk - Tron: Encom Part II".
A BBC report about the day's storms:
www.bbc.co.uk/news/uk-18639868
Негізгі бет Ғылым және технология UK Supercell Chase
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