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pulse1
12th Sep 2016, 17:43
Strange medium height clouds over Dorset today. never seen anything like it, they kept changing shape quite quickly

http://s192.photobucket.com/user/mesonplus/media/854e2c17-9289-4e9d-a281-c65c9876744a.jpg.html]http://i192.photobucket.com/albums/z85/mesonplus/854e2c17-9289-4e9d-a281-c65c9876744a.jpg[/URL]

Windy Militant
12th Sep 2016, 17:58
Somebody get Zog away from the cloaking controls he's been at the Jabbra juice again! ;)

GordonR_Cape
12th Sep 2016, 18:15
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

VP959
12th Sep 2016, 18:17
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.

lomapaseo
12th Sep 2016, 18:41
Look in the bottom of any glass of any cheap vodka after you finish your drink and it will look amazing like that

GordonR_Cape
12th Sep 2016, 18:59
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)

Planet Basher
12th Sep 2016, 19:01
You get the same effect when someone is using an ecigarette, motorcars make great cloud chambers.

ehwatezedoing
13th Sep 2016, 12:13
Chemtrails :}

MadsDad
13th Sep 2016, 15:02
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?

GordonR_Cape
13th Sep 2016, 16:45
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)