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Interesting Photo

It wouldn't be the tornado in Cornwall, would it?


Nope, but not far off,

The caption is:-

Photo of a tornado Sun 7 June, taken at Hadleigh, Suffolk.

This was last Sunday, and was one of a few reported that day. No "supercell" storms it seems, just very intense, but localised, storms. The temperatures were also LOW for the time of year.

No doubt, the boffins will be all over the data, and will be able to say (roughly) how it managed to kick off under these conditions.

In the USA, apart from being bigger, tornadoes need lots of hot & humid air, and it didn't feel like there was any of this around last Sunday.

Cold air coming from the North East probably played a part though, and this may have had a similar effect to the cold air coming over the Rocky mountains in the US as it rides over the hot air. This kind of effect seems to be responsible for the very few "big" UK tornadoes, with the ocean/pole providing the upper cold air, and the continent the hot air.

Big "supercell" storms are rare here, and the last one I remember was ages ago, and before that, as a kid in the 70's. They are pretty obvious because they are so different to the norm, and their upper cloud often preceeds the main storm by a few HOURS, rather than around half an hour to an hour.

Maybe our UK tornadoes are produced in a different way, I am sure I read that a very rapid updraught can produce one (a small one) without the need for a large "supercell" storm.
 

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