Cumulonimbus evolution: 20 minute sequence -
May, 2002


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The view is looking northward from the Wynford Vaughan-thomas pulpit on the Machynlleth-Dylife mountain road. Shower activity is affecting Dinas Mawddwy and the Arans but later extends as the cloud intensifies.

Sadly I didn't note the exact date. However I remember storms forecast for Central England but high pressure building from the west. These were taken during the morning before the pressure rise killed off convective activity over the Welsh mountains.



Fairly ordinary-looking shower-cloud........





Rapid upward building commences.........







Continues to build with striated anvil evident (R).....




Scud obscuring things to an extent but still going up.....






Anvil too high to get with any foreground any more!

This is one of the best vantage-points for weather photography in Mid-Wales!

The shower produced heavy precipitation but did not turn thundery, at least while I was there. I left shortly afterwards as developments became totally obscured by a second cumulonimbus coming in from the SW. Good while it lasted though!

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