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Strange Clouds over Dorset

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Strange Clouds over Dorset

Old 12th Sep 2016, 17:43
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Strange Clouds over Dorset

Strange medium height clouds over Dorset today. never seen anything like it, they kept changing shape quite quickly

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Old 12th Sep 2016, 17:58
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Somebody get Zog away from the cloaking controls he's been at the Jabbra juice again!
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Old 12th Sep 2016, 18:15
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Lenticular clouds and rotor effect from winds passing over nearby hills.

Not common, but I have seen before (Table Mt, Cape Town).

Edit: I can't find a reference/link, but this one was taken years ago near where I live: http://www.capetownskies.com/dane/oct79_25wave_dpb.jpg

Last edited by GordonR_Cape; 12th Sep 2016 at 18:23. Reason: Add image link.
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Old 12th Sep 2016, 18:17
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These were visible from the East border of Dorset, too, as I saw them this afternoon and wondered what they were. The way they changed shape caught my eye, but I struggled to recall enough from the met stuff learned years ago to work out what they were.
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Old 12th Sep 2016, 18:41
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Look in the bottom of any glass of any cheap vodka after you finish your drink and it will look amazing like that
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Old 12th Sep 2016, 18:59
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You would not find it in your Met syllabus, because its a new type of cloud called asperitas (related to undulatus). It was motivated by the Cloud Appreciation Society (though not yet recognised by the WMO).

Edit: My friend's photo was taken in 1979, so its not a new atmospheric phenomenon, but is a new category or name.

After scratching my head, I found a nice photo and history on Wikipedia: https://en.wikipedia.org/wiki/Asperitas_(cloud)

Last edited by GordonR_Cape; 12th Sep 2016 at 19:06. Reason: Clarify/link formatting.
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Old 12th Sep 2016, 19:01
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You get the same effect when someone is using an ecigarette, motorcars make great cloud chambers.
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Old 13th Sep 2016, 12:13
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Old 13th Sep 2016, 15:02
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We've had thunderstorms on and off here all day. The thing is the clouds producing the lightning weren't the usual Cumulo-Nimbus type things but were much more stratified - rather like the clouds pictured above. (Except looking a lot blacker). Lens shaped top cloud with a thinner layer underneath it.

Can you get lightning from a Lenticular cloud?
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Old 13th Sep 2016, 16:45
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Most likely thunderclouds embedded in a layer of altocumulus. These are specifically covered in SIGMET warnings (EMBD TS), since they are not visible from below.

BTW, a lenticular cloud can form around a thundercloud, called pileus, but that does not fit the description. See: https://en.wikipedia.org/wiki/Pileus_(meteorology)
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