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Saturday 6th June- Not The Usual Washout

Thundery wintry showers


On this occasion I was priveleged to be at the centre of where all the weather action was happening. In East Exeter by the Met Office, a set of localised but very intense convective cells targetted the area giving over an hour of thunder and lightning around 8-9am. Although the rate of lightning was not outstandingly high (about 20 strikes over that period) most of the thunder and lightning was right overhead, making it very dramatic. But even more remarkable was the rainfall- it was torrential for most of the entire period. Some of the cumulonimbus clouds were extremely dark.

The remainder of the day continued with heavy rain. At around 5-6pm, another torrential pulse again concentrated itself over my area, and again there were big cumulonimbus cells and it was very dark- dark enough for the streetlights to come on- but no thunder on that occasion.

Reports suggest that a localised area close to the Met Office, possibly including my specific location, had over 100mm in 12 hours. For comparison, the average rainfall in Exeter for the whole of June is about 50mm. What was particularly unusual about it was the way extremely intense rainfall persisted for most of the day- it must have been from a succession of convective cells embedded in the frontal system, because rainfall of that intensity rarely lasts longer than half an hour.

So it may well have been a driech dull wet day- but what a day all the same!


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